@article{MTMT:36120306,
	title = {Empirical relationship between the Geological Strength Index (GSI) and rock mass quality (Q-system) in granite and sedimentary rocks},
	url = {https://m2.mtmt.hu/api/publication/36120306},
	author = {Somodi, Gábor and Bar, Neil and Török, Ákos and Vásárhelyi, Balázs},
	doi = {10.1007/s10064-025-04303-1},
	journal-iso = {B ENG GEOL ENVIRON},
	journal = {BULLETIN OF ENGINEERING GEOLOGY AND THE ENVIRONMENT},
	volume = {84},
	unique-id = {36120306},
	issn = {1435-9529},
	abstract = {This paper presents the relationship between Rock Mass Quality (Q-system) and the Geological Strength Index (GSI) parameters. Equations are suggested based on field data and calculations of the empirical results of granitic rock masses (Hungary) and siltstones, sandstones and quartzite formations (Australia). Measured and calculated GSI values vs Q values are given for granitic rocks, showing a higher correlation than that of the sedimentary rocks of Australia. The different behaviors of rock masses explain the higher correlation between GSI vs Q and GSI chart vs GSI calculated for igneous rock bodies. Despite the differences in stress fields and the highly tectonised structural geological setting of the granitic rock mass, the isotropic nature of granitic rocks vs. anisotropy of sedimentary rock bodies is reflected in the correlation coefficients.},
	year = {2025},
	eissn = {1435-9537},
	orcid-numbers = {Török, Ákos/0000-0002-5394-4510; Vásárhelyi, Balázs/0000-0002-0568-1031}
}

@article{MTMT:35562896,
	title = {Fractional Derivative-based Burger Creep Model for Soft Rocks and its Verification Using Tunnel Monitoring Results and Experimental Data},
	url = {https://m2.mtmt.hu/api/publication/35562896},
	author = {Tarifard Karvigh, Abolfazl and Török, Ákos and Görög, Péter},
	doi = {10.1007/s13369-024-09740-w},
	journal-iso = {ARAB J SCI ENG},
	journal = {ARABIAN JOURNAL FOR SCIENCE AND ENGINEERING},
	unique-id = {35562896},
	issn = {2193-567X},
	abstract = {Considering the creep behavior of soft and weak rocks is critical for analyzing the long-term stability of underground constructions. This paper introduces a novel creep constitutive model to characterize the creep behavior of rocks under uniaxial and triaxial stress states. The fractional derivative Abel dashpot was used to improve the Burger model, and a viscoplastic component was added in series with the modified Burgers model to replicate the tertiary phase of rock creep. The effectiveness of the model was verified using creep test data from various soft rocks and monitoring measurements from a tunnel excavated in heavily jointed weak rock masses. Furthermore, a sensitivity analysis was carried out to assess the impact of the model parameters on creep deformation, and a comparative study was performed to evaluate the efficacy of the suggested model in modeling the accelerated stage of rock creep compared with some existing models. The strong agreement observed between the calculated results and both the creep test data and tunnel monitoring measurements underscores the accuracy and validity of the proposed model. The comparative analysis further revealed that the proposed model offers the highest fitting efficiency for describing the tertiary stage of rock creep. These findings suggest that the model effectively captures the creep behavior of rocks and precisely represents the entire creep process.},
	year = {2025},
	eissn = {2191-4281},
	orcid-numbers = {Török, Ákos/0000-0002-5394-4510; Görög, Péter/0000-0002-0360-1966}
}

@article{MTMT:35860315,
	title = {Historic Stone Masonry arch Bridges: Materials and Numerical Modelling of Failure Modes},
	url = {https://m2.mtmt.hu/api/publication/35860315},
	author = {Varró, Richárd Imre and Török, Ákos and Görög, Péter},
	doi = {10.1007/s12371-025-01085-6},
	journal-iso = {GEOHERITAGE},
	journal = {GEOHERITAGE},
	volume = {17},
	unique-id = {35860315},
	issn = {1867-2477},
	abstract = {This study examined eight different vaulted stone bridges with 1-2-3-4 spans. On-site measurements were conducted to assess the main characteristics of the bridges, including geometric dimensions, the types, main properties of the stones used, and the existing damages. Various laboratory tests were performed on samples taken from the bridges. Using the data obtained, numerical analyses were carried out to determine the load-bearing capacity of the structures. How the existing structural damages affect the load-bearing values was investigated. Depending on the type and extent of the damage, the reduction in load-bearing capacity can range from just a few percent to as much as 90%. It was revealed that the most significant factors affecting load-bearing capacity are the geometric dimensions and the frictional interaction between the elements.},
	year = {2025},
	eissn = {1867-2485},
	orcid-numbers = {Török, Ákos/0000-0002-5394-4510; Görög, Péter/0000-0002-0360-1966}
}

@article{MTMT:35805233,
	title = {Rock Mass Characterization and Non-destructive In-situ Testing of a Rock-cut Tomb: Theban Necropolis (Egypt)},
	url = {https://m2.mtmt.hu/api/publication/35805233},
	author = {Zomborácz, Tamás and Somodi, Gábor and El Qurany, Sayed and Török, Ákos},
	doi = {10.3311/PPci.37653},
	journal-iso = {PERIOD POLYTECH CIV ENG},
	journal = {PERIODICA POLYTECHNICA-CIVIL ENGINEERING},
	volume = {69},
	unique-id = {35805233},
	issn = {0553-6626},
	abstract = {The current study describes the engineering geological properties of a rock-cut tomb that is located near Luxor, forming a part of the Theban necropolis in Egypt. The studied Theban Tomb no. 25 (TT 25) was excavated during the New Kingdom and served as a funeral site. The host limestone belongs to the Late Paleocene Tarawan Chalk Formation. The site investigations included the detection of the joint system, the measurements of relative humidity and temperature cycles, and moisture content. The rock mass parameters were also outlined considering the strength (obtained from Schmidt hammer rebounds) and the orientation and frequency of joints. Five joint sets were identified: three sub-vertical and one bedding-controlled sub-horizontal. The results of temperature, relative humidity, and moisture content measurements support the observations, namely that salts accumulate at the sloping passage and burial chamber, where higher humidity provokes salt efflorescence.},
	year = {2025},
	eissn = {1587-3773},
	pages = {519-528},
	orcid-numbers = {Török, Ákos/0000-0002-5394-4510}
}

@inproceedings{MTMT:35646347,
	title = {Mérnökgeológiai terepi megfigyelések a tervezett M0 autópálya északkeleti, Budakalász és Solymár közötti szakaszán},
	url = {https://m2.mtmt.hu/api/publication/35646347},
	author = {Bartakovics, Edina and Török, Ákos},
	booktitle = {Mérnökgeológia-Kőzetmechanika 2024},
	unique-id = {35646347},
	year = {2024},
	pages = {49-58},
	orcid-numbers = {Török, Ákos/0000-0002-5394-4510}
}

@article{MTMT:35159591,
	title = {Numerical simulation of P and S wave propagation in porous and low porosity carbonate rocks: laboratory tests, automatic P and S waves detection and FLAC3D simulation},
	url = {https://m2.mtmt.hu/api/publication/35159591},
	author = {Besharatinezhad, Ali and Török, Ákos},
	doi = {10.1007/s10064-024-03817-4},
	journal-iso = {B ENG GEOL ENVIRON},
	journal = {BULLETIN OF ENGINEERING GEOLOGY AND THE ENVIRONMENT},
	volume = {83},
	unique-id = {35159591},
	issn = {1435-9529},
	abstract = {This study presents laboratory measurements of P and S wave velocities of two carbonate rocks (porous limestone and yellow cemented limestone). The experimental results were validated and compared with the numerical simulation outputs using the 3D Fast Lagrangian Analysis of Continua software (FLAC3D). The main aim of this study is to evaluate the effect of frequency and mode of emission on ultrasonic pulse velocity (UPV) by applying an automatic method for the determination of P and S wave velocities. Based on the results, automatic detection of UPV can provide reliable outputs. The difference between numerical simulation results and laboratory measurement in terms of P and S wave velocities was, on average, around 7%, suggesting the applicability of the automatic detection method. Our study implies less noise in the perfect shear (PS) mode than in the single zone (SZ) emission mode. In summary, higher frequencies and the PS mode of emission are recommended. © The Author(s) 2024.},
	keywords = {computer software; Numerical methods; Experimental study; Porosity; Carbonates; Limestone; Limestone; Limestone; lime; Wave propagation; Wave propagation; laboratory method; detection method; Ultrasonic applications; Laboratory measurements; Numerical models; P-wave; S-wave; AUTOMATIC DETECTION; AUTOMATIC DETECTION; carbonate rock; carbonate rock; Shear waves; wave velocity; Ultrasonic pulse velocity; Research laboratories; FLAC3D; FLAC3D; S-waves; S wave; Emission mode; Utrasonic propagation; Utrasonic propagation; Emission modes; P- and S-wave velocities; P- and S-waves},
	year = {2024},
	eissn = {1435-9537},
	orcid-numbers = {Török, Ákos/0000-0002-5394-4510}
}

@article{MTMT:34962189,
	title = {The Effect of Freeze-thaw on Mechanical and Ultrasonic Properties of Hungarian Oolitic Stones},
	url = {https://m2.mtmt.hu/api/publication/34962189},
	author = {Besharatinezhad, Ali and Török, Ákos},
	doi = {10.3311/PPci.23268},
	journal-iso = {PERIOD POLYTECH CIV ENG},
	journal = {PERIODICA POLYTECHNICA-CIVIL ENGINEERING},
	volume = {68},
	unique-id = {34962189},
	issn = {0553-6626},
	keywords = {freeze-thaw; Ultrasonic pulse velocity; UCS; oolitic limestone; capillar y},
	year = {2024},
	eissn = {1587-3773},
	pages = {1013-1020},
	orcid-numbers = {Török, Ákos/0000-0002-5394-4510}
}

@article{MTMT:34962272,
	title = {Biopolymers in geotechnical engineering for soil improvement},
	url = {https://m2.mtmt.hu/api/publication/34962272},
	author = {Fradj, Nourhen and Török, Ákos and Kádár, István},
	doi = {10.1556/606.2023.00937},
	journal-iso = {POLLACK PERIODICA},
	journal = {POLLACK PERIODICA: AN INTERNATIONAL JOURNAL FOR ENGINEERING AND INFORMATION SCIENCES},
	volume = {19},
	unique-id = {34962272},
	issn = {1788-1994},
	abstract = {Several biopolymer applications in geotechnical engineering have been adopted in recent years, notably dust control, soil strengthening, and erosion control. Although biopolymer soil treatment approaches can assure engineering efficiency while satisfying environmental protection standards, this technology requires more validation regarding site adaptability, durability, and economic feasibility. The influence of biopolymers on soil behavior is discussed within geotechnical engineering applications and practices, including soil consistency limits, strength and deformation parameters, hydraulic conductivity, soil-water properties, and erosion prevention.},
	year = {2024},
	eissn = {1788-3911},
	pages = {82-86},
	orcid-numbers = {Török, Ákos/0000-0002-5394-4510; Kádár, István/0000-0003-3902-1979}
}

@{MTMT:35738597,
	title = {Földtan},
	url = {https://m2.mtmt.hu/api/publication/35738597},
	author = {Haas, János and Brezsnyánszky, Károly and Budai, Tamás and Fodor, László and Gál, Nóra Edit and Gombárné, Forgács G and Gyalog, L and Katona, G and Kovács, G and Kövér, Szilvia and Lesták, F and Nádor, Annamária and Nagymarosy, A and Prakfalvi, Péter and Rotárné Szalkai, Ágnes and Scharek, P and Síkhegyi, F and Szepessy, G and Szőcs, Teodóra and Török, Ákos and Vatai, J and Vikor, Zs and Zilahi-Sebess, László József},
	booktitle = {Magyarország nemzeti atlasza 2. kötet. Természeti környezet},
	unique-id = {35738597},
	year = {2024},
	pages = {16-35},
	orcid-numbers = {Haas, János/0000-0003-0929-8889; Fodor, László/0000-0002-0606-4414; Kövér, Szilvia/0000-0002-6736-4226; Török, Ákos/0000-0002-5394-4510}
}

@article{MTMT:34763422,
	title = {Habarcsok a Keszthely-fenékpusztai késő római erődből: a petrográfiai-geokémiai és mérnökgeológiai vizsgálatok eredményei [Mortar samples from the Late Roman fortress of Keszthely-Fenékpuszta: results of petrographic-geochemical and engineering geological analyses]},
	url = {https://m2.mtmt.hu/api/publication/34763422},
	author = {Józsa, Sándor and Pintér, Farkas and Török, Ákos and Heinrich-Tamaska, Orsolya Mariann},
	doi = {10.55023/issn.1786-271X.2024-014},
	journal-iso = {ARCHEOMETRIAI MŰHELY},
	journal = {ARCHEOMETRIAI MŰHELY},
	volume = {21},
	unique-id = {34763422},
	issn = {1786-271X},
	abstract = {The Roman fortress of Keszthely-Fenékpuszta, built in the 4th century AD, was located at the western edge of Lake Balaton on a peninsula bordered by open water and marshy peat bogs. The well-protected fortification played a significant infrastructural role, due to the fact that the lake could be crossed here along a main north-south road of Pannonia. Archaeological excavations started in 2009 had the primary goal to clarify the location, floor plan and dating of individual buildings (nos. 24, 25 and 27). Based on petrographic, geochemical, and engineering geological investigations of mortars used in the constructions, we were able to gain insight into the possibilities of answering certain archaeological questions with geoarchaeometric methods. Mortar samples were systematically collected from the different locations representing the functions and construction phases. Based on the archaeological research three chronological groups (I.-III: end of 3rd c. to early 7th c. AD) were distinguished; two of them belong to the late Roman Period (I.-II.) and one (III.) to the Migration Period. The aggregates of the mortars were analyzed by polarized light microscopy and thermoanalytical method. The chemical examination of the binder was carried out by scanning electron microscopy. Additionally, water absorption, density and compressive strength of the mortars were also determined. Based on the results, we can conclude that the mortars of all three periods are of air lime nature containing Mg and Si impurities and both the binders and additives were produced using local raw materials rich in dolomite components. The higher compressive strength values of the mortars of the 3rd period (late 5th to early 7th c. AD) are probably due to the slightly different composition of the binder, or they can also be explained by the static role of the selected pillars. © by the author(s)},
	keywords = {ARCHAEOLOGY; Geochemistry; Petrography; Binder; Mortar; aggregate; Engineering geology},
	year = {2024},
	pages = {161-182},
	orcid-numbers = {Józsa, Sándor/0000-0001-8219-0044; Török, Ákos/0000-0002-5394-4510}
}