TY - JOUR AU - Bamonte, Patrick AU - Gambarova, Pietro G. AU - Lo Monte, Francesco TI - Bond shear modulus in reinforced concrete at high temperature: A design‐oriented approach JF - STRUCTURAL CONCRETE J2 - STRUCT CONCRETE VL - 4 PY - 2024 SP - 1 SN - 1464-4177 DO - 10.1002/suco.202300160 UR - https://m2.mtmt.hu/api/publication/34788598 ID - 34788598 AB - Modeling bond behavior in either ordinary or high‐temperature conditions requires the knowledge of bond shear modulus—called also slip modulus or simply bond stiffness —that has received so far scanty attention because of the greater interest for bond as a guarantee of equilibrium at the Ultimate Limit State (and in fire conditions) than as a means to guarantee both equilibrium and compatibility at the Serviceability Limit State (and in fire/post‐fire conditions). The limited knowledge of bond shear modulus makes it difficult to numerically model such phenomena as tension stiffening, that controls the structural behavior in both ordinary and fire conditions. The general trends identified by examining eleven experimental campaigns with anchored bars covering 27 different cases and temperatures ranging between 20 and 800°C are the starting point of the design‐oriented laws proposed in this study about bond shear modulus as a function of concrete residual strength and temperature. A simple shear‐lag model is introduced for bond shear modulus at room temperature, as its evaluation from test data is no simple matter due to initial chemical adhesion and different test procedures. Bond shear modulus is shown to be a decreasing function of concrete residual compressive strength and of the maximum temperature reached by the bar‐concrete system. Design charts are proposed to allow the designer to identify the value of the bond stiffness on the basis of the max. temperature, of concrete residual strength and of bar diameter, making it possible to realistically model tension stiffening in fire‐damaged RC structures. LA - English DB - MTMT ER - TY - JOUR AU - Banoth, Ira AU - Agarwal, Anil TI - Bond between deformed steel rebars and concrete at elevated temperatures JF - FIRE SAFETY JOURNAL J2 - FIRE SAFETY J VL - 3 PY - 2024 SP - 104133 SN - 0379-7112 DO - 10.1016/j.firesaf.2024.104133 UR - https://m2.mtmt.hu/api/publication/34753408 ID - 34753408 LA - English DB - MTMT ER - TY - JOUR AU - Liu, Caiwei AU - Zheng, Jianxin AU - Ning, Ning AU - Yan, Liangtai AU - Zheng, Chunying TI - Experimental study of bond performance of corroded reinforcement in concrete under various cooling methods JF - JOURNAL OF BUILDING ENGINEERING J2 - J BUILDING ENG VL - 84 PY - 2024 SN - 2352-7102 DO - 10.1016/j.jobe.2024.108569 UR - https://m2.mtmt.hu/api/publication/34520524 ID - 34520524 LA - English DB - MTMT ER - TY - JOUR AU - Liu, Caiwei AU - Qiu, Ziwen AU - Wu, Qingdong AU - Yan, Liangtai AU - Han, Yanqing AU - Miao, Jijun AU - Ba, Panfeng TI - Study on bond-slip between reinforcing bar and concrete during transient pull-out test under fire JF - STRUCTURES J2 - STRUCTURES VL - 61 PY - 2024 SN - 2352-0124 DO - 10.1016/j.istruc.2024.105992 UR - https://m2.mtmt.hu/api/publication/34575510 ID - 34575510 LA - English DB - MTMT ER - TY - JOUR AU - Asghari Ghajari, Farjam AU - Yousefpour, Hossein TI - Cyclic bond behavior in reinforced concrete flexural members exposed to elevated temperatures JF - ENGINEERING STRUCTURES J2 - ENG STRUCT VL - 292 PY - 2023 SN - 0141-0296 DO - 10.1016/j.engstruct.2023.116520 UR - https://m2.mtmt.hu/api/publication/34063708 ID - 34063708 LA - English DB - MTMT ER - TY - CHAP AU - Banoth, Ira AU - Agarwal, Anil ED - Dutta, Subhrajit ED - Choudhury, Satyabrata ED - Fonseca de Oliveira Correia, José António TI - Bond Behaviour Between Steel Rebars and Concrete Under Elevated Temperatures-Eccentric Pullout Test T2 - Advances in Structural Mechanics and Applications PB - Springer Netherlands CY - Cham SN - 9783031055096 T3 - Structural Integrity, ISSN 2522-560X ; 26. PY - 2023 SP - 171 EP - 179 PG - 9 DO - 10.1007/978-3-031-05509-6_14 UR - https://m2.mtmt.hu/api/publication/32961350 ID - 32961350 LA - English DB - MTMT ER - TY - JOUR AU - Cao, Vui Van AU - Trinh, Thong Minh Nguyen TI - Performance of circular concrete filled steel tubes after fire exposure: Experiments JF - STRUCTURES J2 - STRUCTURES VL - 55 PY - 2023 SP - 1331 EP - 1341 PG - 11 SN - 2352-0124 DO - 10.1016/j.istruc.2023.06.110 UR - https://m2.mtmt.hu/api/publication/34044747 ID - 34044747 LA - English DB - MTMT ER - TY - JOUR AU - Li, Xiaoya AU - Zhang, Renbo AU - Jin, Liu AU - Du, Xiuli TI - Refinement simulation of bond-slip performance of deformed reinforced concrete exposed to fire: Parametric analysis JF - CONSTRUCTION AND BUILDING MATERIALS J2 - CONSTR BUILD MATER VL - 399 PY - 2023 SN - 0950-0618 DO - 10.1016/j.conbuildmat.2023.132558 UR - https://m2.mtmt.hu/api/publication/34076572 ID - 34076572 LA - English DB - MTMT ER - TY - JOUR AU - Moffo, Ngaelle Dorivice N. AU - Mwero, John AU - Gariy, Zachary A. TI - Performance of Silica Fume on Preventing Strength Retrogression in Hardened Cement Paste and Mortar at Elevated Temperatures JF - BUILDINGS J2 - BUILDINGS-BASEL VL - 13 PY - 2023 IS - 5 SP - 1301 SN - 2075-5309 DO - 10.3390/buildings13051301 UR - https://m2.mtmt.hu/api/publication/33833265 ID - 33833265 N1 - Export Date: 12 June 2023 Correspondence Address: Nkanpa Moffo, N.D.; Department of Civil Engineering, P.O. Box 62000-00200, Kenya; email: nmndorivice@gmail.com Correspondence Address: Mwero, J.; School of Civil and Resource Engineering, P.O. Box 52428-00200, Kenya; email: johnmwero1@gmail.com Correspondence Address: Gariy, Z.A.; Department of Civil and Construction Engineering, P.O. Box 62000-00200, Kenya; email: zagariy@yahoo.co.uk AB - This study examines the effect of silica fume (SF) as a partial replacement for cement to prevent strength retrogression in hardened cement paste (HCP) and mortar at elevated temperatures. An experimental procedure was conducted on 320 specimens, replacing 0, 10, 20, and 30% of the cement by weight with SF. The residual compressive strength of the specimens was evaluated at room temperature (25 °C) and at 100, 200, 300, and 400 °C for 7, 28, and 56 days. The results indicate that the addition of SF to the cement paste and mortar improves the compressive strength both at 25 °C and at temperatures up to 400 °C. That is attributed to the formation of C-S-H phases, such as tobermorite and xonotlite. Additionally, the optimal residual compressive strength was achieved by adding 30% of SF. Therefore, XRD, SEM, and EDS techniques were employed to evaluate the microstructure of HCP specimens with 30% of SF. The results show that adding SF leads to a denser microstructure and lower porosity, resulting in more durable cement paste and mortar at ambient and elevated temperatures. In conclusion, using SF as a partial replacement for cement can be an effective way of developing sustainable fire-resistant construction materials. LA - English DB - MTMT ER - TY - JOUR AU - Nabahati, Farnam AU - Mousavi, Seyed Sina AU - Dehestani, Mehdi TI - Effect of High Temperature Exposure on Bond Properties of Steel Deformed Rebar Embedded in Self-Consolidating Concrete Containing Copper Slag as Fine Aggregate JF - JOURNAL OF MATERIALS IN CIVIL ENGINEERING J2 - J MATER CIVIL ENG VL - 35 PY - 2023 IS - 12 SP - 1 SN - 0899-1561 DO - 10.1061/JMCEE7.MTENG-16062 UR - https://m2.mtmt.hu/api/publication/34153280 ID - 34153280 LA - English DB - MTMT ER - TY - JOUR AU - Singh, Harpreet AU - Kumar Tiwary, Aditya AU - Singh, Sandeep TI - Experimental investigation on the performance of ground granulated blast furnace slag and nano-silica blended concrete exposed to elevated temperature JF - CONSTRUCTION AND BUILDING MATERIALS J2 - CONSTR BUILD MATER VL - 394 PY - 2023 SN - 0950-0618 DO - 10.1016/j.conbuildmat.2023.132088 UR - https://m2.mtmt.hu/api/publication/34030235 ID - 34030235 LA - English DB - MTMT ER - TY - JOUR AU - Tiwary, Aditya Kumar AU - Singh, Harpreet AU - Eldin, Sayed M. AU - Ilyas, R. A. TI - Residual mechanical properties of concrete incorporated with nano supplementary cementitious materials exposed to elevated temperature JF - NANOTECHNOLOGY REVIEWS J2 - NANOTECHNOL REV VL - 12 PY - 2023 IS - 1 SP - 1 SN - 2191-9089 DO - 10.1515/ntrev-2023-0162 UR - https://m2.mtmt.hu/api/publication/34493342 ID - 34493342 AB - The construction industry commonly employs concrete as a construction material, which sometimes may be subjected to fire exposure. It is important to adopt fire safety measures while planning and constructing such structures to ensure the safety of the occupants and the structural integrity of the concrete. So, determining its performance at elevated temperatures is of utmost importance. The main objective of this study was to investigate the impact of mineral incorporations, namely, nano bentonite clay (NBC) and nano fly ash (NFA), on the retained properties of concrete at normal (27°C) and at elevated temperatures. The feasibility of partly substituting ordinary Portland cement utilizing a mixture of NBC (0–5%) and NFA (0–50%) in concrete was assessed under the exposure to an elevated temperature ranging from 200 to 600°C. Several parameters were examined, including compressive strength, flexural strength, split tensile capacity, water penetration, loss of mass, ultrasound pulse velocity, and microstructure properties. After the experimental analysis, it was observed that the fire endurance was shown to be improved with the inclusion of nanoparticles (BC and FA). A reduction in the loss of mass by samples subjected to elevated heat was observed with the addition of nano bentonite and NFA. The mechanical strength results were obtained as maximum for the concrete specimens with 2% NBC and 20% NFA and further, the specimens performed better when exposed to elevated temperature as compared with normal concrete specimens. The microstructure of the concrete also upgraded with better impermeability owing to the use of NBC and NFA. LA - English DB - MTMT ER - TY - JOUR AU - Wang, Tian-Ci AU - Gao, Wan-Yang AU - Liu, Wang-Wei AU - Liang, Jian AU - Yang, Jian TI - Prediction of residual bond strengths between corroded steel bars and concrete after exposure to high temperatures JF - ENGINEERING FRACTURE MECHANICS J2 - ENG FRACT MECH VL - 283 PY - 2023 SN - 0013-7944 DO - 10.1016/j.engfracmech.2023.109213 UR - https://m2.mtmt.hu/api/publication/33716215 ID - 33716215 N1 - Funding Agency and Grant Number: National Natural Science Foundation of China (NSFC) [51978398]; Natural Science Foundation of Shanghai in China [19ZR1426200, 23ZR1429200]; Shandong Provincial Key Laboratory of Appraisal and Retrofitting in Building Structures Funding text: Acknowledgements The authors are grateful for the financial support received from the National Natural Science Foundation of China (NSFC) (No. 51978398) and the Natural Science Foundation of Shanghai in China (Nos. 19ZR1426200 and 23ZR1429200) . We would also like to acknowledge the project supported by the Shandong Provincial Key Laboratory of Appraisal and Retrofitting in Building Structures. AB - Reinforced concrete structures used in aggressive environments (e.g., coastal and ocean regions) may suffer from steel corrosion. On the other hand, structures with corroded steel bars are likely to experience fire hazards during their service life. Therefore, the combined effect of high -temperature exposure and steel corrosion may lead to a significant reduction in the post-fire bond strength between the corroded steel bars and surrounding concrete, which will further affect the residual load-capacity assessment of fire-damaged RC members. This paper presents an analytical model for predicting the residual bond strengths between the corroded steel bars and surrounding concrete after exposure to high temperatures. In the analytical model, the concrete cover around the steel bar is considered as a thick-walled cylinder whose inner surface is sub-jected to uniform pressure due to the combined action of the pull-out load and the volume expansion of the corrosion products. Three stages of the concrete cover (i.e., uncracked, partially cracked and fully cracked stages) are considered one by one in the analytical model to determine the internal pressure. During the analysis, the tensile softening behavior of the cracked concrete and the material property degradations of concrete after high-temperature exposure are properly considered. The accuracy and reliability of the proposed analytical model are verified by comparing the analytical predictions with the corresponding pull-out test results collected from the literature. A detailed parametric analysis is then performed to gain insight into the effects of various factors on the post-fire residual bond strengths of corroded steel bars. LA - English DB - MTMT ER - TY - JOUR AU - Xu, Zhenhuan AU - Li, Jun AU - Wu, Chengqing TI - A numerical study of blast resistance of fire damaged ultra-high performance concrete columns JF - ENGINEERING STRUCTURES J2 - ENG STRUCT VL - 279 PY - 2023 SN - 0141-0296 DO - 10.1016/j.engstruct.2023.115613 UR - https://m2.mtmt.hu/api/publication/33569073 ID - 33569073 N1 - Funding Agency and Grant Number: Australian Research Council [DP210101100] Funding text: The authors gratefully acknowledge the financial support of the Australian Research Council grant DP210101100. LA - English DB - MTMT ER - TY - JOUR AU - Zalhaf, Nagat AU - Ghazy, Mariam AU - Abdelatty, Metwali AU - Zakaria, Mohamed Hamed TI - Finite element investigation on the post-fire behavior of reinforced composite NSC-HPC slabs JF - WORLD JOURNAL OF ENGINEERING J2 - WORLD J ENGINEERING VL - 12 PY - 2023 SP - 1 SN - 1708-5284 DO - 10.1108/WJE-08-2023-0320 UR - https://m2.mtmt.hu/api/publication/34449743 ID - 34449743 LA - English DB - MTMT ER - TY - JOUR AU - Abdelmelek, Nabil AU - Lublóy, Éva Eszter TI - Flexural strength of silica fume, fly ash, and metakaolin of hardened cement paste after exposure to elevated temperatures JF - JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY J2 - J THERM ANAL CALORIM VL - 147 PY - 2022 IS - 13 SP - 7159 EP - 7169 PG - 11 SN - 1388-6150 DO - 10.1007/s10973-021-11035-3 UR - https://m2.mtmt.hu/api/publication/32195350 ID - 32195350 N1 - Cited By :3 Export Date: 3 May 2022 CODEN: JTACF Correspondence Address: Lubloy, E.; Department of Construction Materials and Technologies, Hungary; email: lubloy.eva@epito.bme.hu AB - The mechanical properties of concrete based mainly on flexural and compressive bearing capacity. Generally, researchers have an interest in the evaluation of compression property through the importance of the flexural performance of the material in the constructions, namely the significance of each mechanical property based upon the position of the structural element. The present experimentally work is directed toward improving the flexural strengths performance of ordinary hardened cement paste (HCP) at ambient and after elevated temperatures exposure. The used parameters were different pozzolanic materials with different replacements ratios to cement mass and different levels of temperature. Results proved the significant contribution of pozzolanic material to enhance the flexural properties of HCP after being exposed to elevated temperatures. The low content of CaO, the high grinding fineness, and the physical morphology of the used pozzolanic materials, made their adoption effective to HCP after exposure to elevated temperatures. Using 3%, 12%, and 15% of silica fume (SF), metakaolin (MK), and fly ash (FA), respectively, showed the highest heat endurance among the other replacements. However, the optimum replacement of MK has shown a better heat endurance than the optimum replacements of SF and FA. On the other hand, the spalling has occurred at high replacements of SF. Finally, the results are supported by means of thermo-gravimetric, SEM, and computed tomography investigations. LA - English DB - MTMT ER - TY - JOUR AU - Asghari Ghajari, Farjam AU - Yousefpour, Hossein TI - Residual bond‐slip behavior in reinforced concrete members exposed to elevated temperatures JF - STRUCTURAL CONCRETE J2 - STRUCT CONCRETE VL - 5 PY - 2022 SP - 1 SN - 1464-4177 DO - 10.1002/suco.202200927 UR - https://m2.mtmt.hu/api/publication/33487129 ID - 33487129 LA - English DB - MTMT ER - TY - CONF AU - Dhanendra, Kumar AU - Alok, A. Deshpande AU - Amr, A. Soliman AU - Ravi, Ranade TI - High-temperature residual bond behavior of strainhardening cementitious composites T2 - Bond in Concrete 2022 PY - 2022 SP - 452 EP - 463 PG - 12 UR - https://m2.mtmt.hu/api/publication/33038575 ID - 33038575 LA - English DB - MTMT ER - TY - JOUR AU - Jin, Liu AU - Li, Xiaoya AU - Zhang, Renbo AU - Du, Xiuli TI - Modelling of bond behavior of deformed bar embedded in concrete after heating to high temperatures: A mesoscale study JF - CONSTRUCTION AND BUILDING MATERIALS J2 - CONSTR BUILD MATER VL - 334 PY - 2022 SN - 0950-0618 DO - 10.1016/j.conbuildmat.2022.127456 UR - https://m2.mtmt.hu/api/publication/32783227 ID - 32783227 N1 - Export Date: 28 July 2022 CODEN: CBUME Correspondence Address: Zhang, R.; Key Laboratory of Urban Security and Disaster Engineering of Ministry of Education, China; email: zhangrenbo99@126.com LA - English DB - MTMT ER - TY - JOUR AU - Kiran, Tattukolla AU - Anand, N. AU - Mathews, Mervin Ealiyas AU - Kanagaraj, Balamurali AU - Andrushia, A. Diana AU - Lublóy, Éva Eszter AU - Jayakumar, G TI - Investigation on Improving the Residual Mechanical Properties of Reinforcement steel and Bond Strength of Concrete Exposed to Elevated Temperature JF - Case Studies in Construction Materials J2 - CASE STUD CONSTR MAT VL - 16 PY - 2022 PG - 22 SN - 2214-5095 DO - 10.1016/j.cscm.2022.e01128 UR - https://m2.mtmt.hu/api/publication/32809401 ID - 32809401 N1 - Department of Civil Engineering, Karunya Institute of Technology and Sciences, Coimbatore, India Department of Electronics and Communication, Karunya Institute of Technology and Sciences, Coimbatore, India Department of Construction Materials and Technologies, Faculty of Civil Engineering, Budapest University of Technology and Economics, Budapest, 1521, Hungary L&T Edutech, Larsen and Toubro Limited, Chennai, India Export Date: 27 May 2022 Correspondence Address: Anand, N.; Department of Civil Engineering, India; email: nanand@karunya.edu Funding text 1: The authors wish to acknowledge the Science and Engineering Research Board , Department of Science and Technology of the Indian Government for the financial support ( YSS/2015/001196 ) provided for carrying out this research. AB - Concrete and reinforcement steel are essential building materials widely used in composite construction due to their advantages, such as strength, durability and ease of availability. Fire is one of the critical hazards that causes severe damage to the structure and leads to progressive collapse. Due to the intensity of fire exposure, the concrete and reinforcing steel significantly losses their inherent mechanical properties and service life. Minimizing the fire-induced damage and failure are the primary objectives in the design of concrete structures. Therefore, an extensive experimental attempt was undertaken to evaluate the pull out behaviour and also to improve the bond performance of concrete and reinforcement steel when exposed to elevated temperature. A cement based perlite coating was developed as a protective material to safeguard the concrete in the study. All the pull out bond test specimens were heated following the ISO 834 standard fire curve, and subsequently cooled either by air or water. Residual mechanical properties of steel rebar such as yield strength, ultimate strength, elastic modulus, shear and bending capacity were evaluated after the exposure to elevated temperature. Investigations were conducted on pull out specimens to evaluate the bond stress slip behaviour and bond strength of concrete. A detailed physical observation was made on the failed concrete specimens to examine the damage. A drastic reduction in bond strength of concrete and tensile strength of the rebar were observed while increasing the duration of heating. Also, it was observed that the coated specimens exhibited better performance by retaining the bond strength and yield strength of the rebar. LA - English DB - MTMT ER - TY - JOUR AU - Kiran, Tattukolla AU - Yadav, Siva Kumar AU - N, Anand AU - Mathews, Mervin Ealiyas AU - Andrushia, Diana AU - Lublóy, Éva Eszter AU - Kodur, Venkatesh TI - Performance evaluation of lightweight insulating plaster for enhancing the fire endurance of high strength structural concrete JF - JOURNAL OF BUILDING ENGINEERING J2 - J BUILDING ENG VL - 57 PY - 2022 PG - 28 SN - 2352-7102 DO - 10.1016/j.jobe.2022.104902 UR - https://m2.mtmt.hu/api/publication/32925627 ID - 32925627 N1 - Department of Civil Engineering, Karunya Institute of Technology and Sciences, Coimbatore, India Department of Construction Materials and Technologies, Faculty of Civil Engineering, Budapest University of Technology and Economics, Budapest, 1521, Hungary Department of Civil and Environmental Engineering, Michigan State University, East Lansing, MI, United States Export Date: 28 July 2022 Correspondence Address: lubloy, E.; Department of Construction Materials and Technologies, Hungary; email: lubeva@web.de Correspondence Address: N, A.; Department of Civil Engineering, India; email: nanand@karunya.edu AB - Structural concrete is a widely used building material due to its versatile characteristics including higher compressive strength and longevity. However, when exposed to fire, concrete experiences faster degradation in its mechanical properties and is also susceptible to spalling. To overcome this problem, the possibility of lightweight plaster application on High Strength Concrete (HSC) is explored in the presented investigation. Insulation plasters, namely Sand Plaster (SP), Gypsum Perlite Plaster (GPP), and Gypsum Mineral Wool Plaster (GMP) were developed. This investigation evaluates the compressive strength, bond strength, and shear strength of concrete which is exposed to the standard fire temperature. Varying cooling conditions which involved air and water were adopted to cool the concrete specimens after the elevated temperature test. Further, the damaged concrete and the plaster were examined to analyse the physical changes. Analysis of the study reveals that more number of denser surface cracks and higher mass loss was observed for reference and SP specimens. Temperature penetration at the core of cube, bond, and shear specimens is less for the GPP and GMP specimens when compared with the SP specimens. At higher temperatures (986 °C), the reference and SP specimens show a lower bond and shear strength with higher slip values. Specimens insulated with GPP and GMP exhibited a low-temperature penetration at the core portion. Also, the results of the study reported the higher residual compressive, bond, and shear strength compared to other specimens. LA - English DB - MTMT ER - TY - CHAP AU - Lakhani, Hitesh AU - Hofmann, Jan TI - Effect of high temperature on bond behavior between reinforcement and concrete T2 - fib Bulletin 106. Advances on bond in concrete PB - International Federation for Structural Concrete (fib) SN - 9782883941649 T3 - fib Bulletins PY - 2022 SP - 173 EP - 187 PG - 15 DO - 10.35789/fib.BULL.0106.Ch11 UR - https://m2.mtmt.hu/api/publication/33734300 ID - 33734300 LA - English DB - MTMT ER - TY - JOUR AU - Li, Xiaoya AU - Zhang, Renbo AU - Jin, Liu AU - Du, Xiuli TI - Post-fire dynamic bond behavior of concrete and deformed bar: Mesoscale simulation and constitutive modeling JF - ENGINEERING STRUCTURES J2 - ENG STRUCT VL - 267 PY - 2022 SN - 0141-0296 DO - 10.1016/j.engstruct.2022.114681 UR - https://m2.mtmt.hu/api/publication/33025346 ID - 33025346 N1 - Funding Agency and Grant Number: National Natural Science Foun-dation of China; [51822801]; [51978022] Funding text: Acknowledgement This research was supported by the National Natural Science Foun-dation of China (No. 51822801, 51978022) . The support is gratefully acknowledged. LA - English DB - MTMT ER - TY - JOUR AU - Mei, Yong AU - Sun, Yunhou AU - Li, Feng AU - Xu, Xiangyun AU - Zhang, Ao AU - Shen, Jun TI - Probabilistic prediction model of steel to concrete bond failure under high temperature by machine learning JF - ENGINEERING FAILURE ANALYSIS J2 - ENG FAIL ANAL VL - 142 PY - 2022 PG - 15 SN - 1350-6307 DO - 10.1016/j.engfailanal.2022.106786 UR - https://m2.mtmt.hu/api/publication/33096998 ID - 33096998 N1 - Cited By :1 Export Date: 12 June 2023 CODEN: EFANE Correspondence Address: Shen, J.; Institute of Defence Engineering, China; email: shenjun6646@sina.com AB - The interface bond performance between concrete and steel bars under high temperature has a crucial influence on the fire resistance design of the reinforced concrete (RC) structure, but there is no unified model for the prediction of the bond strength yet. Previous experimental studies have conducted plenty of RC member pull-out tests under high temperature, which could be collected as a comprehensive database. As a data-driven method, machine learning (ML) can efficiently establish the regression relationship between input features and output directly through the data. However, current studies usually use classic ML algorithms for establishing a deterministic prediction model, where only one scalar prediction would be provided and its confidence level is uncertain, which is not instructive for the users. Thus, based on previous experimental data, this paper uses the Natural Gradient Boosting (NGBoost) algorithm to estab-lish a unified probabilistic prediction model for the bond strength between steel bars and concrete under high temperature, considering several key factors, such as fiber fraction, concrete compressive strength, bond strength under room temperature et al. By training on the collected 267 experimental data, the prediction results of the ML based model show that these models attain higher accuracy than those of empirical formulas, and the NGBoost based probabilistic prediction model has better prediction performance than the general deterministic ML models. Finally, the Shapley value method is used to explain the calculation results of the model, and compared with the statistical results such as variance and mean of the calculation results of the five empirical formulas, ML has obvious advantages. LA - English DB - MTMT ER - TY - JOUR AU - Mousavi, S.S. AU - Dehestani, M. AU - Mousavi, Ajarostaghi S.S. AU - Bhojaraju, C. AU - Nguyen-Tri, P. TI - On post-fire bond strength of steel rebar embedded in thermally-damaged concrete–a review JF - JOURNAL OF ADHESION SCIENCE AND TECHNOLOGY J2 - J ADHES SCI TECHNOL PY - 2022 SN - 0169-4243 DO - 10.1080/01694243.2021.2025308 UR - https://m2.mtmt.hu/api/publication/33030575 ID - 33030575 N1 - Cited By :2 Export Date: 28 July 2022 CODEN: JATEE Correspondence Address: Mousavi, S.S.; Department of Civil Engineering, Postal Box: 484, Iran; email: seyedsina.m@gmail.com Correspondence Address: Nguyen-Tri, P.; Laboratory of Advanced Materials for Energy and Environment, 3351, Boulevard des Forges, Canada; email: Phuong.Nguyen-Tri@uqtr.ca AB - This study summarizes the state-of-the-art research progress concerning the influence of high-temperature exposure on the residual bond strength of steel rebar. Also, an experimental database from the literature was collected and analyzed for use in fire safety management in concrete design codes and specifications for high important reinforced concrete (RC) structures, such as public health-care buildings, to reduce and mitigate the risk of thermal damages, especially in steel-congested areas. Different vital variables are debated in the present review, including concrete cover-to-rebar diameter ratio, rebar deformation, fiber addition, transverse confinement, aggregate type, concrete water-to-binder ratio, concrete type, cooling regime, thermal loading regime, and heating exposure time. The review shows that high-temperature exposure significantly reduces the residual bond strength. It is concluded that increasing concrete cover, the addition of fibers, considering transverse confinement, using deformed rebar instead of a plain one, using a concrete mixture with a lower value of (Formula presented.) ratio, and air-cooling regime alleviate the detrimental influence of high-temperature exposure on the residual bond strength. Standing time can significantly recover the bond reduction as a healing period. Additionally, research gaps and the current conflicting results regarding some variables are drawn to be considered for future works. © 2022 Informa UK Limited, trading as Taylor & Francis Group. LA - English DB - MTMT ER - TY - CHAP AU - Muciaccia, Giovanni TI - Recent developments in design of pre-cast and p ost-installed rebar connections under temperature T2 - fib Bulletin 106. Advances on bond in concrete PB - International Federation for Structural Concrete (fib) SN - 9782883941649 T3 - fib Bulletins PY - 2022 SP - 188 EP - 199 PG - 12 DO - 10.35789/fib.BULL.0106.Ch12 UR - https://m2.mtmt.hu/api/publication/33734306 ID - 33734306 LA - English DB - MTMT ER - TY - CONF AU - Pietro, G. Gambarova AU - Giovanni, Muciaccia TI - Bond in RC structures at high temperature and in fire: lessons from the past and hot issues still open to investigation T2 - Bond in Concrete 2022 PY - 2022 SP - 790 EP - 802 PG - 13 UR - https://m2.mtmt.hu/api/publication/33038590 ID - 33038590 LA - English DB - MTMT ER - TY - JOUR AU - Sahani, Ashok Kumar AU - Samanta, Amiya Kumar TI - Bond slip behaviour of deformed bar embedded in sustainable concrete at elevated temperature JF - SADHANA-ACADEMY PROCEEDINGS IN ENGINEERING SCIENCES J2 - SADHANA-ACAD P ENG S VL - 47 PY - 2022 IS - 2 SN - 0256-2499 DO - 10.1007/s12046-022-01856-9 UR - https://m2.mtmt.hu/api/publication/32796922 ID - 32796922 N1 - Export Date: 28 July 2022 CODEN: SAPSE Correspondence Address: Sahani, A.K.; Design Department, West Bengal, India; email: aks.13ce1506@phd.nitdgp.ac.in LA - English DB - MTMT ER - TY - JOUR AU - Vinh, An Le AU - Thi-Thanh, Thao Nguyen AU - Ngoc, Tan Nguyen TI - Investigation of Ultrasonic Pulse Velocity Reduction in Reinforced Concrete Members Exposed to High Temperature JF - JOURNAL OF MATERIALS AND ENGINEERING STRUCTURES J2 - J MATER ENG STRUCT VL - 9 PY - 2022 SP - 531 EP - 537 PG - 7 SN - 2170-127X UR - https://m2.mtmt.hu/api/publication/33665526 ID - 33665526 LA - English DB - MTMT ER - TY - JOUR AU - Wang, Tian-Ci AU - Gao, Wan-Yang AU - Hu, Li-Li AU - Hamed, Ehab AU - Bai, Yu-Lei AU - Zeng, Jun-Jie AU - Yang, Jian TI - Analytical model for predicting the post-fire bond behavior between steel bars and concrete JF - CONSTRUCTION AND BUILDING MATERIALS J2 - CONSTR BUILD MATER VL - 343 PY - 2022 SN - 0950-0618 DO - 10.1016/j.conbuildmat.2022.128129 UR - https://m2.mtmt.hu/api/publication/32893200 ID - 32893200 N1 - State Key Laboratory of Ocean Engineering, Shanghai Jiao Tong University, Shanghai, 200240, China Shanghai Key Laboratory for Digital Maintenance of Buildings and Infrastructure, School of Naval Architecture, Ocean and Civil Engineering, Shanghai Jiao Tong University, Shanghai, 200240, China Center for Infrastructure Engineering and Safety, School of Civil and Environmental Engineering, University of New South Wales, Sydney, NSW 2052, Australia Key Laboratory of Urban Security and Disaster Engineering of Ministry of Education, Beijing University of Technology, Beijing, 100124, China School of Civil and Transportation Engineering, Guangdong University of Technology, Guangzhou, 510006, China Export Date: 28 July 2022 CODEN: CBUME Correspondence Address: Gao, W.-Y.; State Key Laboratory of Ocean Engineering, China; email: wanyanggao@sjtu.edu.cn LA - English DB - MTMT ER - TY - CHAP AU - Abed, Mohammed AU - Nemes, Rita ED - Sherif, Yehia ED - Mahmoud, Reda Taha ED - Akmal, Abdelfatah TI - Fire resistance of self-compacting high-performance concrete produced with cellular concrete powder T2 - Infrastructure Management, Assessment and Rehabilitation PB - Cambridge Scholars Publishing CY - Newcastle upon Tyne SN - 9781527569478 PY - 2021 SP - 2 EP - 14 PG - 13 UR - https://m2.mtmt.hu/api/publication/33031279 ID - 33031279 LA - English DB - MTMT ER - TY - JOUR AU - Ba, Guangzhong AU - Weng, Xiangyu AU - Liu, Caiwei AU - Miao, Jijun TI - Bond strength of corroded reinforcements in concrete after high-temperature exposure JF - CONSTRUCTION AND BUILDING MATERIALS J2 - CONSTR BUILD MATER VL - 270 PY - 2021 PG - 9 SN - 0950-0618 DO - 10.1016/j.conbuildmat.2020.121400 UR - https://m2.mtmt.hu/api/publication/31657550 ID - 31657550 N1 - College of Ocean Science and Engineering, Shanghai Maritime University, Shanghai, 201306, China School of Civil Engineering, Qingdao University of Technology, 11 Fushun Road, Qingdao, 266033, China Cited By :3 Export Date: 28 July 2022 CODEN: CBUME Correspondence Address: Liu, C.; School of Civil Engineering, 11 Fushun Road, China; email: 03150053@163.com LA - English DB - MTMT ER - TY - THES AU - Dhanendra, Kumar TI - Strain hardening cementitious composites for fire resilient infrastructure PY - 2021 UR - https://m2.mtmt.hu/api/publication/32777833 ID - 32777833 LA - English DB - MTMT ER - TY - JOUR AU - Fakoor, Maziar AU - Nematzadeh, Mahdi TI - Evaluation of post-fire pull-out behavior of steel rebars in high-strength concrete containing waste PET and steel fibers: Experimental and theoretical study JF - CONSTRUCTION AND BUILDING MATERIALS J2 - CONSTR BUILD MATER VL - 299 PY - 2021 PG - 19 SN - 0950-0618 DO - 10.1016/j.conbuildmat.2021.123917 UR - https://m2.mtmt.hu/api/publication/32390844 ID - 32390844 N1 - Cited By :8 Export Date: 28 July 2022 CODEN: CBUME Correspondence Address: Nematzadeh, M.; Department of Civil Engineering, Iran; email: m.nematzadeh@umz.ac.ir AB - The present research addressed the post-fire bond performance between high-strength concrete incorporating waste polyethylene terephthalate (WPET) and steel reinforcement; a subject that had not been previously addressed. Further, the impact of incorporating steel fiber, as a commonly used material, into the mixture on the bond improvement was assessed. To this end, the content of WPET substituting for the fine aggregate by volume (0, 5, and 10%), volume fraction of steel fibers (0, 0.5, and 1%), applied temperature (25, 200, 400, and 600 degrees C) were considered as variables in a total of 108 samples that were produced. Afterward, the samples were subjected to the pullout test to examine different parameters. These parameters included the bond behavior, failure mode, bond stress-slip response, and bond strength-compressive strength behavior. Based on the results, with the incorporation of 5 and 10% volume content of WPET replacing fine particles, the bond strength declined by 4 and 26%, respectively, and as the temperature was raised, this reducing effect increased. Furthermore, the presence of steel fiber had a positive impact in the samples with the splitting failure mode, while it had a negligible or sometimes even negative impact in the samples with the pull-out failing mode. Lastly, multivariate prediction models were proposed for the bond behavior and bond-slip response as a function of the concrete compressive strength, WPET content, content of steel fiber, and the target temperature. Afterward, a comparison was made between the empirical results and the predictions of models developed by other researchers and the fib Model Code 2010 and ACI 408-12 codes. (c) 2021 Elsevier Ltd. All rights reserved. LA - English DB - MTMT ER - TY - JOUR AU - Gong, Wei AU - Chen, Qi AU - Miao, Jijun TI - Bond behaviors between copper slag concrete and corroded steel bar after exposure to high temperature JF - JOURNAL OF BUILDING ENGINEERING J2 - J BUILDING ENG VL - 44 PY - 2021 PG - 13 SN - 2352-7102 DO - 10.1016/j.jobe.2021.103312 UR - https://m2.mtmt.hu/api/publication/32399916 ID - 32399916 N1 - Cited By :4 Export Date: 28 July 2022 Correspondence Address: Chen, Q.; College of Civil Engineering, China; email: chenqi0604@qq.com AB - In this paper, the experimental investigation on degradation law of bond behaviors between copper slag concrete and corroded steel bar after exposure to high temperature was conducted. The bond behaviors such as bond strength, bond stiffness, peak slip displacement and average bond stress-slip curve between copper slag concrete and corroded steel bar after heating were analyzed with the change in heating temperature and corrosion rate of steel bar. Moreover, the distribution of free chloride ion in concrete was measured and the chloride ion diffusion coefficient was also calculated. At last, the bond-slip constitutive model suitable for high temperature damaged concrete and corroded steel bar was proposed. The test results showed that the chloride ion diffusion coefficient of high temperature damaged copper slag concrete increased with the increasing of copper slag replacing ratio and heating temperature. The bond strength between copper slag concrete and corroded steel bar decreased with the increasing of heating temperature and corrosion rate of the steel bar and decreased at an accelerated rate with the increasing of the copper slag replacing ratio, and the peak slip displacement gradually increased as the heating temperature increased. However, the bond stiffness increased first and then decreased with the increasing of heating temperature, and the bond stiffness also increased with the increasing of copper slag replacing ratio. At last, the accuracy of the bond-slip constitutive model established based on the test results was verified. LA - English DB - MTMT ER - TY - JOUR AU - Mathews, Mervin Ealiyas AU - Anand, N. AU - Lublóy, Éva Eszter AU - Kiran, Tattukolla TI - Effect of elevated temperature on interfacial shear transfer capacity of self-compacting concrete JF - Case Studies in Construction Materials J2 - CASE STUD CONSTR MAT VL - 15 PY - 2021 PG - 16 SN - 2214-5095 DO - 10.1016/j.cscm.2021.e00753 UR - https://m2.mtmt.hu/api/publication/32708954 ID - 32708954 N1 - Department of Civil Engineering, Karunya Institute of Technology and Sciences, Coimbatore, India Department of Construction Materials and Technologies, Faculty of Civil Engineering, Budapest University of Technology and Economics, Hungary, Hungary Export Date: 28 July 2022 Correspondence Address: Lublóy, É.; Department of Construction Materials and Technologies, Hungary; email: lubloy.eva@emk.bme.hu AB - Interfacial shear stress transfer may occur in structural elements across concrete or between concrete and steel. The fundamental contributing parameters which improve the shear capacities are aggregate grading, compressive strength of concrete, type and area of the interfacial zone, and interfacial reinforcement pattern. During the event of a fire, these parameters are severely affected and mainly depend on the exposure level of the temperature and its duration. In the present investigation, the effect of elevated temperature on the interfacial Shear Transfer Capacity (STC) of Self-Compacting Concrete (SCC) was evaluated using shear (push-off) specimens. SCC was developed using Fly Ash (FA) and Ground Granulated Blast Furnace Slag (GGBFS) as Supplementary Cementitious Material (SCM). The study emphasises the proper understanding of degradation in shear strength of SCC exposed to elevated temperatures. Expanded Perlite Aggregate (EPA) is utilised as a partial replacement for fine aggregate. Also, a thermal protective coating is developed with Cement Perlite Plaster (CPP) for improving the performance of SCC. The European Federation of National Associations Representing for Concrete (EFNARC) guidelines were followed to ensure the workability of the developed SCC mix. Specimens were exposed to 30, 60, 90, and 120 min of heating durations following the International Organization for Standardization 834 (ISO 834) fire rating curve and tested to examine residual compressive strength, mass loss, STC after the natural air cooling process. The SCC specimens with EPA content have exhibited higher residual compressive strength and STC. All the protected SCC specimens coated with the CPP mixture contributed to retaining the original shear capacity by resisting the temperature. An empirical relationship was proposed to predict the residual STC of SCC after exposure to elevated temperature. LA - English DB - MTMT ER - TY - JOUR AU - Muciaccia, Giovanni AU - Consiglio, Andrea Nino TI - Local bond properties of reinforcement in concrete subjected to elevated temperatures: Effects of clear cover, bonded length and heating and loading procedures JF - ENGINEERING STRUCTURES J2 - ENG STRUCT VL - 230 PY - 2021 SN - 0141-0296 DO - 10.1016/j.engstruct.2020.111594 UR - https://m2.mtmt.hu/api/publication/31790313 ID - 31790313 N1 - Cited By :4 Export Date: 28 July 2022 CODEN: ENSTD Correspondence Address: Muciaccia, G.; Politecnico di Milano, Italy; email: giovanni.muciaccia@polimi.it LA - English DB - MTMT ER - TY - JOUR AU - Nematzadeh, Mahdi AU - Shahmansouri, Amir Ali AU - Zabihi, Reza TI - Innovative models for predicting post-fire bond behavior of steel rebar embedded in steel fiber reinforced rubberized concrete using soft computing methods JF - STRUCTURES J2 - STRUCTURES VL - 31 PY - 2021 SP - 1141 EP - 1162 PG - 22 SN - 2352-0124 DO - 10.1016/j.istruc.2021.02.015 UR - https://m2.mtmt.hu/api/publication/31915084 ID - 31915084 N1 - Department of Civil Engineering, University of Mazandaran, Babolsar, Iran Department of Civil Engineering, Mazandaran University of Science and Technology, Babol, Iran Cited By :24 Export Date: 28 July 2022 Correspondence Address: Nematzadeh, M.; Department of Civil Engineering, Iran; email: m.nematzadeh@umz.ac.ir LA - English DB - MTMT ER - TY - THES AU - Sólyom, Sándor TI - Bond behaviour of FRP bars to concrete, influence of bar surface, entrained air and high temperatures PB - Budapesti Műszaki és Gazdaságtudományi Egyetem PY - 2021 UR - https://m2.mtmt.hu/api/publication/31850572 ID - 31850572 LA - English DB - MTMT ER - TY - JOUR AU - Sólyom, Sándor AU - Di Benedetti, Matteo AU - Balázs, György László TI - Bond of FRP bars in air-entrained concrete: Experimental and statistical study JF - CONSTRUCTION AND BUILDING MATERIALS J2 - CONSTR BUILD MATER VL - 300 PY - 2021 SN - 0950-0618 DO - 10.1016/j.conbuildmat.2021.124193 UR - https://m2.mtmt.hu/api/publication/32111016 ID - 32111016 N1 - Department of Construction Materials and Technologies, Budapest University of Technology and Economics, Muegyetem rkp 3, Budapest, 1111, Hungary Multidisciplinary Engineering Education, The University of Sheffield, The Diamond, 32 Leavygreave Road, Sheffield, S3 7RD, United Kingdom Cited By :5 Export Date: 28 July 2022 CODEN: CBUME Correspondence Address: Solyom, S.; Department of Construction Materials and Technologies, Muegyetem rkp 3, Hungary; email: solyom.sandor@emk.bme.hu LA - English DB - MTMT ER - TY - JOUR AU - Watts, Murray J. AU - Amin, Ali AU - Bernard, E. Stefan AU - Gilbert, R. Ian AU - Facconi, Luca TI - Early age bond stress-slip behaviour of macro-synthetic fibre reinforced concrete JF - CONSTRUCTION AND BUILDING MATERIALS J2 - CONSTR BUILD MATER VL - 301 PY - 2021 PG - 13 SN - 0950-0618 DO - 10.1016/j.conbuildmat.2021.124097 UR - https://m2.mtmt.hu/api/publication/32399922 ID - 32399922 N1 - School of Civil Engineering, The University of Sydney, Australia Technologies in Structural Engineering P/L, Australia School of Civil and Environmental Engineering, UNSW Sydney, Australia Department of Civil, Environmental, Architectural Engineering and Mathematics, University of Brescia, Italy Cited By :1 Export Date: 28 July 2022 CODEN: CBUME Correspondence Address: Amin, A.; School of Civil Engineering, Australia; email: Ali.Amin@Sydney.edu.au AB - The magnitude of bond stress that exists between concrete and steel reinforcement heavily influences the width and spacing of cracks. An understanding of the bond stress available is important when estimating deformations and crack widths in structural concrete. Experimental studies and modelling have shown that the inclusion of fibres improves bond characteristics in structural concrete. These studies have focused on the strength criterion in mature aged concretes containing steel fibres. No early age bond test results currently exist for macro-synthetic fibre reinforced concrete (FRC). In this paper, the results of an experimental campaign are presented on the bondslip behaviour of macro-synthetic fibre reinforced concrete (containing either 0, 4 or 8 kg/m(3) of fibres) tested at 1, 3, 7, 14, 28 and 90 days using standard pull-out tests. The tests are complimented with a suite of material characterisation tests. Furthermore, a simple model founded on previous approaches is presented to describe the ascending portion of the bond stress - slip relationship for FRC. It is concluded that the early age bond strength is slightly improved through the addition of macro-synthetic fibre reinforcement. On the other hand, the early age bond stiffness of reinforced concrete is substantially improved through the addition of macro-synthetic fibre reinforcement. LA - English DB - MTMT ER - TY - JOUR AU - Abed, Mohammed AU - Nemes, Rita AU - Lublóy, Éva Eszter TI - Performance of Self-Compacting High-Performance Concrete Produced with Waste Materials after Exposure to Elevated Temperature JF - JOURNAL OF MATERIALS IN CIVIL ENGINEERING J2 - J MATER CIVIL ENG VL - 32 PY - 2020 IS - 1 SN - 0899-1561 DO - 10.1061/(ASCE)MT.1943-5533.0002989 UR - https://m2.mtmt.hu/api/publication/30871672 ID - 30871672 N1 - Funding Agency and Grant Number: Hungarian Scientific Research Fund (OTKA) [OTKA K 109233]; Janos Bolyai Resarch Scholarship of the Hungarian Academy of Sciences Funding text: The authors are grateful to the Hungarian Scientific Research Fund (OTKA) for the financial support of the OTKA K 109233 research project. The authors also acknowledge the support by the Janos Bolyai Resarch Scholarship of the Hungarian Academy of Sciences. LA - English DB - MTMT ER - TY - CHAP AU - Banoth, I. AU - Agarwal, A. ED - Subramaniam, KVL ED - Khan, Mohd Ataullah TI - Effect of Heating Rate on Bond Behavior Between Steel and Concrete at Elevated Temperatures T2 - Advances in Structural Engineering: Select Proceedings of FACE 2019 VL - 74 PB - Springer-Verlag Singapore CY - Singapore SN - 9789811540783 T3 - Lecture Notes in Civil Engineering, ISSN 2366-2557 ; 74. PY - 2020 SP - 89 EP - 98 PG - 10 DO - 10.1007/978-981-15-4079-0_8 UR - https://m2.mtmt.hu/api/publication/33031107 ID - 33031107 N1 - Export Date: 28 July 2022 Correspondence Address: Banoth, I.; Department of Civil Engineering, India; email: ira.banoth@gmail.com AB - The bond behavior between steel and concrete was evaluated under elevated temperatures of 23, 100, 200, 300, 400, 500, and 600 °C with different heating rates. The specimen for testing is the cubical size of 200 × 200 × 200 mm with a rebar placed at the center. The strength of concrete was 25 N/mm2, and different diameters 12 and 20 mm rebars were used. The specimens were heated up to the desired temperature at the interface by following heating rate of 2 °C/min and ISO 834 standard fire curve. Pullout tests were conducted for determining the bond strength and slip between steel and concrete. The bond strength was decreased with increasing temperature and heating rate. The bond strength was decreased very randomly by following heating rate according to ISO 834. © 2020, Springer Nature Singapore Pte Ltd. LA - English DB - MTMT ER - TY - GEN AU - Deshpande, AA AU - Whittaker, AS TI - Multiscale Study of Reinforced Concrete Shear Walls Subjected to Elevated Temperatures PY - 2020 PG - 227 UR - https://m2.mtmt.hu/api/publication/31372888 ID - 31372888 LA - English DB - MTMT ER - TY - JOUR AU - Deshpande, Alok A. AU - Kumar, Dhanendra AU - Ranade, Ravi TI - Temperature effects on the bond behavior between deformed steel reinforcing bars and hybrid fiber-reinforced strain-hardening cementitious composite JF - CONSTRUCTION AND BUILDING MATERIALS J2 - CONSTR BUILD MATER VL - 233 PY - 2020 SN - 0950-0618 DO - 10.1016/j.conbuildmat.2019.117337 UR - https://m2.mtmt.hu/api/publication/31124939 ID - 31124939 N1 - Összes idézések száma a WoS-ban: 0 LA - English DB - MTMT ER - TY - JOUR AU - Sólyom, Sándor AU - Di Benedetti, Matteo AU - Guadagnini, Maurizio AU - Balázs, György László TI - Effect of temperature on the bond behaviour of GFRP bars in concrete JF - COMPOSITES PART B-ENGINEERING J2 - COMPOS PART B-ENG VL - 183 PY - 2020 PG - 10 SN - 1359-8368 DO - 10.1016/j.compositesb.2019.107602 UR - https://m2.mtmt.hu/api/publication/31035380 ID - 31035380 N1 - Department of Construction Materials and Technologies, Budapest University of Technology and Economics, Műegyetem rkp 3, Budapest, 1111, Hungary Multidisciplinary Engineering Education, The University of Sheffield, The Diamond, 32 Leavygreave Road, Sheffield, S3 7RD, United Kingdom Department of Civil and Structural Engineering, The University of Sheffield, Mappin Street, Sheffield, S1 3JD, United Kingdom Cited By :2 Export Date: 15 June 2020 CODEN: CPBEF Correspondence Address: Solyom, S.; Department of Construction Materials and Technologies, Budapest University of Technology and Economics, Műegyetem rkp 3, Hungary; email: solyom.sandor@epito.bme.hu Összes idézések száma a WoS-ban: 0 Funding Agency and Grant Number: New National Excellence Program of the Ministry of Human Capacities, Hungary [UNKP-18-3, UNKP-18-3-IV-BME-45]; European Union by Marie Curie ITN: European Network for Durable Reinforcement and Rehabilitation Solutions (endure) [PITN-GA-2013-607851] Funding text: Supported by the UNKP-18-3 New National Excellence Program of the Ministry of Human Capacities, Hungary (Grant: UNKP-18-3-IV-BME-45). Authors gratefully acknowledge also the financial support of European Union by Marie Curie ITN: European Network for Durable Reinforcement and Rehabilitation Solutions (endure, Grant: PITN-GA-2013-607851). GFRP bars were provided by Schock Germany, special thanks to Dr Andre Weber. Department of Construction Materials and Technologies, Budapest University of Technology and Economics, Műegyetem rkp 3, Budapest, 1111, Hungary Multidisciplinary Engineering Education, The University of Sheffield, The Diamond, 32 Leavygreave Road, Sheffield, S3 7RD, United Kingdom Department of Civil and Structural Engineering, The University of Sheffield, Mappin Street, Sheffield, S1 3JD, United Kingdom Cited By :8 Export Date: 18 May 2021 CODEN: CPBEF Correspondence Address: Solyom, S.; Department of Construction Materials and Technologies, Műegyetem rkp 3, Hungary; email: solyom.sandor@epito.bme.hu LA - English DB - MTMT ER - TY - JOUR AU - Varona, F.B. AU - Baeza, F.J. AU - Bru, D. AU - Ivorra, S. TI - Non-linear multivariable model for predicting the steel to concrete bond after high temperature exposure JF - CONSTRUCTION AND BUILDING MATERIALS J2 - CONSTR BUILD MATER VL - 249 PY - 2020 SN - 0950-0618 DO - 10.1016/j.conbuildmat.2020.118713 UR - https://m2.mtmt.hu/api/publication/31265048 ID - 31265048 N1 - Összes idézések száma a WoS-ban: 0 LA - English DB - MTMT ER - TY - JOUR AU - Zhou, M.-W. AU - Gao, W.-Y. AU - Hu, K.-X. TI - Analysis of bond behavior of steel bar-to-concrete interface after exposure to elevated temperatures JF - Journal of Architecture and Civil Engineering VL - 37 PY - 2020 IS - 6 SP - 91 EP - 99 PG - 9 SN - 1673-2049 DO - 10.19815/j.jace.2019.12094 UR - https://m2.mtmt.hu/api/publication/33031106 ID - 33031106 N1 - Export Date: 28 July 2022 Correspondence Address: Zhou, M.-W.; School of Naval Architecture, China; email: zhoumowei@sjtu.edu.cn AB - Based on the thick-walled cylinder model with uniform pressure at inner surface, the damaged concrete cover around the deformed bar was divided into two parts according to the stress state, including a partially cracked inner part and an uncracked outer one. For the inner cylinder, the smeared cracking assumption and tension softening behavior of the cracked concrete was taken into account with the stiffness reduction along the radial direction. Also, the reductions in the elastic modulus, tensile strength and fracture energy of concrete after exposure to elevated temperatures were properly considered. Based on the theoretical analysis of the ultimate splitting failure between steel bar and concrete damaged by high temperatures, the calculation method and analytical model of the interfacial bond strength between steel bar and concrete after exposure to high temperatures was deduced, which was related to the size and material properties of steel bar and concrete. Moreover, a linear relationship between the radius of the inner cracked cylinder and the end slip of the reinforcing steel bar was proposed, and thus the interfacial bond stress-slip relationship was obtained. The accuracy of the analytical model was validated by comprising the predicted results with available pull out test data on the steel bar-to-concrete interface(including 118 bond strength data and 15 bond stress-end slip curves). The results show that the analytical model has good accuracy, and can be widely used for the analysis and prediction of interfacial bond strength after high temperature in drawing test with different parameters. © 2020, Editorial Department of Journal of Architecture and Civil Engineering. All rights reserved. LA - Chinese DB - MTMT ER - TY - THES AU - Abed, Mohammed TI - Green self-compacting high-performance concrete PB - Budapesti Műszaki és Gazdaságtudományi Egyetem PY - 2019 UR - https://m2.mtmt.hu/api/publication/31348620 ID - 31348620 LA - English DB - MTMT ER - TY - JOUR AU - Abed, Mohammed AU - Nemes, Rita AU - Lublóy, Éva Eszter TI - The impact of time on the heat resistance of self-compacting high-performance concrete incorporated with recycled materials JF - JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY J2 - J THERM ANAL CALORIM VL - 138 PY - 2019 IS - 1 SP - 35 EP - 45 PG - 11 SN - 1388-6150 DO - 10.1007/s10973-019-08263-z UR - https://m2.mtmt.hu/api/publication/30646788 ID - 30646788 N1 - Cited By :1 Export Date: 12 June 2020 CODEN: JTACF Correspondence Address: Lublóy, É.; Department of Construction Materials and Technologies, Faculty of Civil Engineering, Budapest University of Technology and EconomicsHungary; email: lubloy.eva@epito.bme.hu Összes idézések száma a WoS-ban: 0 LA - English DB - MTMT ER - TY - CHAP AU - AGNOLETTI, A. AU - CONSIGLIO, A. AU - MUCIACCIA, G. AU - BOSNJAK, J. AU - SHARMA, A. TI - Effects of elevated temperatures and of loading procedures on the bond performance of reinforcement in concrete T2 - Proceedings 9th International Conference On Concrete Under Severe Conditions - Environment and Loading SN - 9786580633005 PY - 2019 SP - 1 EP - 9 PG - 9 DO - 10.31808/5ca6e03e5ca4f0d406ac88aa UR - https://m2.mtmt.hu/api/publication/31121313 ID - 31121313 LA - English DB - MTMT ER - TY - THES AU - Alok, Abhay Deshpande TI - A MULTISCALE STUDY OF CONCRETE SUBJECTED TO ELEVATED TEMPERATURES PY - 2019 SP - 179 UR - https://m2.mtmt.hu/api/publication/30687583 ID - 30687583 LA - English DB - MTMT ER - TY - JOUR AU - Li, L.G. AU - Chen, Z.P. AU - Ouyang, Y. AU - Zhu, J. AU - Chu, S.H. AU - Kwan, A.K.H. TI - Synergistic effects of steel fibres and expansive agent on steel bar-concrete bond JF - CEMENT & CONCRETE COMPOSITES J2 - CEMENT CONCRETE COMP VL - 104 PY - 2019 SN - 0958-9465 DO - 10.1016/j.cemconcomp.2019.103380 UR - https://m2.mtmt.hu/api/publication/30750577 ID - 30750577 N1 - Összes idézések száma a WoS-ban: 0 LA - English DB - MTMT ER - TY - GEN AU - Saikali, Elisabeth Rita TI - Bond Behaviour of Steel Reinforcing Bars Embedded in Ultra-High-Performance Steel Fiber Reinforced Concrete PY - 2019 PG - 292 UR - https://m2.mtmt.hu/api/publication/31124967 ID - 31124967 LA - English DB - MTMT ER - TY - CHAP AU - Varona, F.B. AU - Villacampa, Y. AU - Navarro-González, F.J. AU - Bru, D. AU - Baeza, F.J. ED - W.P., De Wilde ED - G.M., Carlomagno TI - Non-linear numerical models for predicting the bond strength of fibre-reinforced concrete at high temperatures T2 - Computational methods and experimental measurements XIX & Earthquake Resistant engineering structures XII VL - 125 PB - WIT Press CY - Southampton SN - 9781784663339 T3 - WIT TRANSACTIONS ON ENGINEERING SCIENCES ; 125. PY - 2019 SP - 195 EP - 206 PG - 12 DO - 10.2495/CMEM190191 UR - https://m2.mtmt.hu/api/publication/33031109 ID - 33031109 N1 - Department of Civil Engineering, University of Alicante, Spain Department of Applied Mathematics, University of Alicante, Spain Conference code: 232119 Export Date: 28 July 2022 AB - The steel to concrete bond mechanism is critical to address the behaviour of reinforced concrete structural members. Although this mechanism can be compromised during a fire, it may be one of the least researched phenomena in concrete technology and is not addressed in the design codes and standards. In this work, we present a thorough review of the experimental data available on this topic, focusing on fibre-reinforced concrete. The data allow us to study the evolution of the bond strength as a function of three variables: the exposure temperature, the type of fibre and the volume fraction. A linear multiple regression is initially carried out, followed by a series of non-linear numerical models. These models are built using a methodology based on the finite element method combined with the formulation of the Galerkin method. The numerical models have been developed for different degrees of complexity. The error measurements obtained with the linear regression and the numerical models are compared in order to present a prediction model. The selected model is then validated for different values of the independent variables. This process supports the discussion of the influence that the independent variables have in the evolution of the bond strength between steel reinforcement and fibre-reinforced concretes exposed to high temperatures. © 2019 WIT Press. LA - English DB - MTMT ER - TY - CHAP AU - Varona, Francisco de Borja AU - Villacampa, Yolanda AU - Navarro-Gonzalez, Francisco J. AU - Bru, David AU - Baeza, F. Javier ED - Chorro, SI ED - Cardiel, VC ED - Perez, AS ED - Montes, EH ED - Martin, LMG ED - Perez, MC TI - Numerical models to predict residual adhesion between steel and fiber-reinforced concrete at high temperature T2 - 5th International Conference on Mechanical Models in Structural Engineering (CMMOST 2019) PB - Universidad de Alicante CY - Alicante SN - 9788417924584 PY - 2019 SP - 519 EP - 532 PG - 14 UR - https://m2.mtmt.hu/api/publication/33031171 ID - 33031171 AB - The mechanism of adhesion between corrugated steel and concrete is fundamental in the study of the structural capacity of reinforced concrete. Although this mechanism can be compromised in fire situations, it is probably one of the least studied phenomena in the field of concrete technology and is not contemplated in the design regulations. This paper presents an exhaustive review of the available experimental data, focusing especially on fiber-reinforced concrete. The data allow characterizing the evolution of the adhesion as a function of three variables: the maximum exposure temperature, the type of fiber and its volume fraction. Initially, a linear multiple regression analysis was performed, followed by a series of non-linear numerical models. These models have been constructed using an approach based on the finite element method combined with the Galerkin method formulation. The numerical models have been developed for different degrees of mesh complexity. The error measurements resulting from the application of the above techniques are then compared in order to propose a suitable prediction model. Finally, the selected model is validated for different input values of the independent variables. This last phase serves as a basis for a discussion on how these independent variables affect the evolution of the adhesion between steel and fiber-reinforced concrete after exposure to high temperatures. LA - Spanish DB - MTMT ER - TY - CONF AU - Kumar, Dhanendra AU - Deshpande, Alok AU - Ranade, Ravi AU - Elhami, Khorasani Negar TI - Effects of Elevated Temperatures on Residual Bond Strength of Steel Rebar with Strain Hardening Cementitious Composite T2 - Proceedings of 3rd R. N. Raikar Memorial International Conference on Science and Technology of Concrete PY - 2018 PG - 10 UR - https://m2.mtmt.hu/api/publication/30386965 ID - 30386965 LA - English DB - MTMT ER - TY - JOUR AU - Shamseldein, Ayman AU - Elshafie, Hany AU - Rashad, Ahmed AU - Kohail, M TI - Assessment and restoration of bond strength of heat-damaged reinforced concrete elements JF - CONSTRUCTION AND BUILDING MATERIALS J2 - CONSTR BUILD MATER VL - 169 PY - 2018 SP - 425 EP - 435 PG - 11 SN - 0950-0618 DO - 10.1016/j.conbuildmat.2018.03.008 UR - https://m2.mtmt.hu/api/publication/27613386 ID - 27613386 N1 - Cited By :3 Export Date: 11 June 2020 CODEN: CBUME Correspondence Address: Shamseldein, A.; Structural Engineering Department, Faculty of Engineering, Ain Shams UniversityEgypt; email: aymanshamseldein@eng.asu.edu.eg Összes idézések száma a WoS-ban: 0 LA - English DB - MTMT ER - TY - JOUR AU - Varona, F B AU - Baeza, F J AU - Bru, D AU - Ivorra, S TI - Evolution of the bond strength between reinforcing steel and fibre reinforced concrete after high temperature exposure JF - CONSTRUCTION AND BUILDING MATERIALS J2 - CONSTR BUILD MATER VL - 176 PY - 2018 IS - 3 SP - 359 EP - 370 PG - 12 SN - 0950-0618 DO - 10.1016/j.conbuildmat.2018.05.065 UR - https://m2.mtmt.hu/api/publication/27406735 ID - 27406735 N1 - Összes idézések száma a WoS-ban: 0 LA - English DB - MTMT ER - TY - JOUR AU - Li, Qingtao AU - Huang, Xiaohua AU - Huang, Zhaohui AU - Yuan, Guanglin TI - Bond characteristics between early aged fly ash concrete and reinforcing steel bar after fire JF - CONSTRUCTION AND BUILDING MATERIALS J2 - CONSTR BUILD MATER VL - 147 PY - 2017 SP - 701 EP - 712 PG - 12 SN - 0950-0618 DO - 10.1016/j.conbuildmat.2017.04.184 UR - https://m2.mtmt.hu/api/publication/26649557 ID - 26649557 N1 - Összes idézések száma a WoS-ban: 0 LA - English DB - MTMT ER - TY - JOUR AU - Wouter, Botte AU - Caspeele, Robby TI - Post-cooling properties of concrete exposed to fire JF - FIRE SAFETY JOURNAL J2 - FIRE SAFETY J VL - 92 PY - 2017 SP - 142 EP - 150 PG - 9 SN - 0379-7112 DO - 10.1016/j.firesaf.2017.06.010 UR - https://m2.mtmt.hu/api/publication/26662984 ID - 26662984 N1 - Összes idézések száma a WoS-ban: 0 LA - English DB - MTMT ER -