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Structural Integrity and Durability of Structures Views: 1,662 Downloads: 1,305 Vol. 15, No. 58 (2021) September 25, 2021 pp. 128-150

Long-term degradation, damage and fracture in deep rock tunnels: A review on the effect of excavation methods

Wadslin Frenelus, Hui Peng, Jingyu Zhang

Rocks are frequently host materials for underground structures, particularly for deep Tunnels. Their behavior plays a fundamental role in the overall stability of these structures. In fact, the erection of deep tunnels imposes rocks…

10.3221/IGF-ESIS.58.10Copy the DOI link

Details: Long-term degradation, damage and fracture in deep rock tunnels: A review on the effect of excavation methods PDF Visual Abstract

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Miscellanea Views: 1,431 Downloads: 506 Vol. 12, No. 44 (2018) March 18, 2018 pp. 64-81

An innovative micromechanics-based three-dimensional long-term strength criterion for fracture assessment of rock materials

xiaoping zhou, Xiaocheng Huang, Filippo Berto

Rocks may exhibit time-dependent behaviors. Long-term strength criterion significantly dominates creep failure of rocks. Rocks contain many microcracks, which lead to degrade of long-term strength. In this paper, it is assumed that there…

10.3221/IGF-ESIS.44.06Copy the DOI link

Details: An innovative micromechanics-based three-dimensional long-term strength criterion for fracture assessment of rock materials PDF

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SI: Russian mechanics contributions for Structural Integrity Views: 1,116 Downloads: 519 Vol. 16, No. 62 (2022) September 22, 2022 pp. 585-601

Justification of fracture criteria for salt rocks

Alexander Baryakh, Andrey Tsayukov

The study of salt rocks deformation and fracture processes is an essential part of mining parameters justification for mineral salt deposits. The results of uniaxial compression tests on large salt rock specimens are presented as a loading…

10.3221/IGF-ESIS.62.40Copy the DOI link

Details: Justification of fracture criteria for salt rocks PDF Visual Abstract

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Miscellanea Views: 1,232 Downloads: 564 Vol. 9, No. 34 (2015) September 29, 2015

A comparative study on dynamic mechanical performance of concrete and rock

Xia Zhengbing, Zhang Kefeng, Deng Yanfeng, Ge Fuwen

Recently, engineering blasting is widely applied in projects such as rock mineral mining, construction of underground cavities and field-leveling excavation. Dynamic mechanical performance of rocks has been gradually attached importance…

10.3221/IGF-ESIS.34.63Copy the DOI link

Details: A comparative study on dynamic mechanical performance of concrete and rock PDF

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Analytical, Numerical and Physical Models Views: 1,100 Downloads: 409 Vol. 14, No. 53 (2020) July 19, 2020 pp. 446-456

A coupled elastoplastic damage model for brittle rocks: elastoplastic damage model for brittle rocks

Zheng Li, Yundong Shou, Deping Guo, Filippo Berto

Brittle rock contains an important plastic deformation, which causes microcracks when coupled with stress-induced damage. A new coupled elastoplastic damage model is established in order to discuss the damage behaviors found in brittle…

10.3221/IGF-ESIS.53.35Copy the DOI link

Details: A coupled elastoplastic damage model for brittle rocks: elastoplastic damage model for brittle rocks PDF Visual Abstract

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SI: Russian mechanics contributions for Structural Integrity Views: 541 Downloads: 297 Vol. 18, No. 70 (2024) August 24, 2024 pp. 191-209

Elastic-viscoplastic deformation models of salt rocks

Alexander Baryakh, Andrey Tsayukov

Results of secondary creep tests for salt rock specimens were mathematically described. Elastic-viscoplastic modeling of viscous properties of salt rocks was based on elastoplastic models using a non-associated Mohr-Coulomb plastic flow…

10.3221/IGF-ESIS.70.11Copy the DOI link

Details: Elastic-viscoplastic deformation models of salt rocks PDF Visual Abstract

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Fracture Views: 1,057 Downloads: 473 Vol. 15, No. 56 (2021) March 28, 2021 pp. 16-45

Experimental investigation of cracking behaviors of ductile and brittle rock-like materials

Hao Bai, Wei Du, Yundong Shou, Lichuan Chen, Filippo Berto

The cracking characteristics of ductile rocks were studied by similar materials with sand, barite, epoxide resin, polyamide, silicone rubber and alcohol, while the cracking characteristics of brittle rocks were investigated by similar…

10.3221/IGF-ESIS.56.02Copy the DOI link

Details: Experimental investigation of cracking behaviors of ductile and brittle rock-like materials PDF Visual Abstract

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Miscellanea Views: 870 Downloads: 572 Vol. 10, No. 36 (2016) March 22, 2016 pp. Pages 182-190

Acoustic emission characteristics of instability process of a rock plate under concentrated loading

S.R. Wang, C.Y. Li, Z.S. Zou, X.L. Liu

It can facilitate the understanding of the mechanical properties and failure laws of rocks to research on the rock failure mechanism and evolution characteristics of Acoustic Emission (AE). Under the concentrated loading condition, the…

10.3221/IGF-ESI.36.18Copy the DOI link

Details: Acoustic emission characteristics of instability process of a rock plate under concentrated loading PDF

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Miscellanea Views: 849 Downloads: 546 Vol. 13, No. 49 (2019) June 20, 2019 pp. 557-567

Rock Brittleness Evaluation Method Based on the Complete Stress-Strain Curve

ChenYang Liu, Yong Wang, XiaoPei Zhang, LiZhi Du

Brittleness plays an important role in the brittle failure process of rocks, and is also one of the important mechanical properties of rocks and a key indicator in rock engineering such as hydraulic fracturing, tunnelling machine borehole…

10.3221/IGF-ESIS.49.52Copy the DOI link

Details: Rock Brittleness Evaluation Method Based on the Complete Stress-Strain Curve PDF Visual Abstract

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Miscellanea Views: 955 Downloads: 423 Vol. 13, No. 47 (2019) December 1, 2018 pp. 65-73

The thermal damaging process of diorite under microwave irradiation

Xirui Lu, Chen Yuan, Zeng Junsen, Hu Qijun, Shao Dadong, Zhang Haibin, Lu Xirui

Laboratory tests have been conducted to investigate the effects of thermal damage on diorite under microwave irradiation. The sample rocks were heated to high temperature range of 300 to 800 ℃ in a single-mode microwave furnace. The…

10.3221/IGF-ESIS.47.06Copy the DOI link

Details: The thermal damaging process of diorite under microwave irradiation PDF Visual Abstract

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Impact & Dynamics Views: 775 Downloads: 506 Vol. 14, No. 53 (2020) July 19, 2020 pp. 13-25

Shear behaviour of reinforced concrete beams under impact loads by the lumped damage framework

Mateus Oliveira, Daniel Teles, David Amorim

Impact loadings such as vehicle collisions or falling rocks on a structure could lead it to collapse and, eventually, to fatal victims. Among possible alternatives to analyse this issue, Lumped Damage Mechanics is an interesting option due…

10.3221/IGF-ESIS.53.02Copy the DOI link

Details: Shear behaviour of reinforced concrete beams under impact loads by the lumped damage framework PDF Visual Abstract

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Fracture Views: 733 Downloads: 992 Vol. 16, No. 60 (2022) March 25, 2022 pp. 213-228

The investigation of additive manufacturing and moldable materials to produce railway ballast grain analogs

Bence Szabó, L. Pásthy, Á. Orosz, K. Tamás

The size and shape of individual grains, play an important role in the mechanical behavior of granular materials such as the strength and stability of railway ballast. The aim of this research is to study materials from which uniform…

10.3221/IGF-ESIS.60.15Copy the DOI link

Details: The investigation of additive manufacturing and moldable materials to produce railway ballast grain analogs PDF Visual Abstract

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SI: IGF26 - 26th International Conference on Fracture and Structural Integrity Views: 654 Downloads: 457 Vol. 16, No. 60 (2022) March 25, 2022 pp. 13-29

Effect of petrographic composition and chemistry of aggregate on the local and general fracture response of cementitious composites

Michal Vyhlídal, Iva Rozsypalová, Hana Šimonová, Barbara Kucharczyková, Leona Vavro, Martin Vavro, Jiří Němeček, Pavla Rovnaníková, Zbyněk Keršner

This paper concerns the results of research into the influence of the composition of rock inclusions on the fracture response of cement-based composite specimens. Specially designed specimens of the nominal dimensions 40 × 40 × 160 mm with…

10.3221/IGF-ESIS.60.02Copy the DOI link

Details: Effect of petrographic composition and chemistry of aggregate on the local and general fracture response of cementitious composites PDF Visual Abstract

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Miscellanea Views: 829 Downloads: 499 Vol. 7, No. 24 (2013) March 20, 2013 pp. Pages 112-118

Temporal peculiarities of brittle fracture of rocks and concrete

Y. Petrov, I. Smirnov, A. Evstifeev, N. Selyutina

When we want to compare the strength of two materials, we compare the table values of quasistatic strength. However results of some experiments show that the strength ratio of the materials can change with increase in rate of loading. Such…

10.3221/IGF-ESIS.24.12Copy the DOI link

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SI: Russian mechanics contributions for Structural Integrity Views: 632 Downloads: 366 Vol. 13, No. 49 (2019) June 26, 2019 pp. 140-155

Numerical model of fracture growth in hydraulic re-fracturing

Oleg Yurievich Smetannikov, Yuriy Aleksandrovich Kashnikov, Sergey Gennadievich Ashikhmin, Artem Eduardovich Kukhtinskiy

Simulation of fracture propagation with FEM method generates the need of re-meshing to provide more accurate results. This raises a question of determining the direction and criterion of mesh modification. In the case of general-purpose…

10.3221/IGF-ESIS.49.16Copy the DOI link

Details: Numerical model of fracture growth in hydraulic re-fracturing PDF Visual Abstract

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Fatigue and Fracture of non metallic materials Views: 273 Downloads: 198 Vol. 20, No. 75 (2026) December 11, 2025 pp. 435-462

Utilizing cylindrical and cubical specimens with edge notch to determine size-independent fracture quantities of rock materials

Ragip Ince, Erkin Eren

The compliance method was first applied to short rod specimens to determine the nonlinear fracture toughness of rock materials by ISRM (International Society for Rock Mechanics) in the 1980s. In this study, utilizing the techniques of the…

10.3221/IGF-ESIS.75.30Copy the DOI link

Details: Utilizing cylindrical and cubical specimens with edge notch to determine size-independent fracture quantities of rock materials PDF HTML Visual Abstract

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SI: Steels and Composites for Engineering Structures Views: 581 Downloads: 406 Vol. 15, No. 58 (2021) September 25, 2021 pp. 376-385

The role of aggregate granulation on testing fracture properties of concrete

Marta Słowik

Concrete is a porous material containing aggregate of different sizes, hardened cement matrix with air pores, microcracks and water. Concrete internal structure is different from that of other engineering materials. Furthermore concrete is…

10.3221/IGF-ESIS.58.27Copy the DOI link

Details: The role of aggregate granulation on testing fracture properties of concrete PDF Visual Abstract

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SI: Crack Paths - CP2024 Views: 599 Downloads: 300 Vol. 19, No. 72 (2025) March 3, 2025 pp. 179-192

Comparative assessment of the acoustic activity and the Pressure Stimulated Voltage in marble specimens under compression

Stavros K Kourkoulis, E. D. Pasiou, D. Triantis, I. Stavrakas

The temporal evolution of the electric activity generated in marble specimens under uniaxial compression is analyzed and quantified in terms of the Pressure Stimulated Voltage (Electric Potential) developed. The evolution of the electric…

10.3221/IGF-ESIS.72.13Copy the DOI link

Details: Comparative assessment of the acoustic activity and the Pressure Stimulated Voltage in marble specimens under compression PDF HTML Visual Abstract

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SI: Steels and Composites for Engineering Structures Views: 477 Downloads: 413 Vol. 15, No. 58 (2021) September 25, 2021 pp. 402-415

Analysis of static response of RC beams with NSM CFRP/GFRP rods

Erica Magagnini, Roberto Capozucca, Maria Vittoria Vecchietti

In this paper experimental results of investigation on reinforced concrete (RC) beams strengthened with the near surface method (NSM) are analyzed considering the response under bending tests on two beams. One of the RC beams was damaged…

10.3221/IGF-ESIS.58.29Copy the DOI link

Details: Analysis of static response of RC beams with NSM CFRP/GFRP rods PDF Visual Abstract

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