Electrical Resistivity Evolution and Brittle Failure of Sandstone After Exposure to Different Temperatures

Published on Feb 1, 2018in Rock Mechanics and Rock Engineering4.14
· DOI :10.1007/S00603-017-1351-7
Chao Lü1
Estimated H-index: 1
(CUMT: China University of Mining and Technology),
Qiang Sun4
Estimated H-index: 4
(CUMT: China University of Mining and Technology)
Source
Abstract
📖 Papers frequently viewed together
5 Citations
2006
4 Authors (M Takahashi, ..., M Kwa´sniewski)
3 Citations
References33
Newest
#1Min-liang Chen (CUMT: China University of Mining and Technology)H-Index: 2
#2Hongwen Jing (CUMT: China University of Mining and Technology)H-Index: 17
Last. Tantan Zhu (CUMT: China University of Mining and Technology)H-Index: 5
view all 6 authors...
The uniaxial compression experiments on the sandstone samples containing double fissures and a single circular hole were carried out by using electro-hydraulic servo universal testing machine to investigate the effect of rock bridge angle β and fissure angle α on mechanical properties and evolution characteristics of cracks. The results show that the peak strength, peak strain and elastic modulus of defected specimens decrease comparing with those for intact sample, and show a decreased trend fi...
17 CitationsSource
#1Miaomiao Wang (CAS: Chinese Academy of Sciences)H-Index: 2
#2Pei Li (CAS: Chinese Academy of Sciences)H-Index: 2
Last. Dan Xu (CAS: Chinese Academy of Sciences)H-Index: 1
view all 4 authors...
The effect of structural discontinuities on the progressive failure process of anisotropic rocks should be paid particular attention. The crack damage stress σcd, also considered as the yield strength, and the relationship between σcd and the uniaxial peak strength σucs of anisotropic rocks for different orientations θ of the isotropy planes with respect to the loading directions were investigated theoretically and experimentally. A theoretical relation of σcd/σucs with the function of the shape...
9 CitationsSource
#1Chao Lü (CUMT: China University of Mining and Technology)H-Index: 5
#2Qiang Sun (CUMT: China University of Mining and Technology)H-Index: 22
Last. Liangliang Lu (CUMT: China University of Mining and Technology)H-Index: 1
view all 6 authors...
Abstract Heating at high temperature will make the tensile strength of sandstone change due to the loss of water and minerals and the effect of thermal stress. In this paper, the sandstone samples are heated from room temperature to 900 °C in a high temperature furnace and then are subjected to Brazilian test with a computer-controlled hydraulic universal testing machine. The longitudinal wave velocity, total energy absorbed per unit thickness of disc and mass loss rate are comprehensively inves...
46 CitationsSource
#1Youjun Zhang (China University of Geosciences)H-Index: 1
#2Timothy M. Kusky (China University of Geosciences)H-Index: 71
Last. Roy GiddensH-Index: 1
view all 7 authors...
The Taupo Volcanic Zone (TVZ) on the North Island of New Zealand is located above the subducting Pacific slab and hosts hydrothermal systems related to subduction, arc magmatism and crustal extension. In these systems, gold is transported primarily as sulphide complexes, with gold being deposited in response to boiling and mixing of the deep geothermal fluids. Conglomerate cobbles and hydrothermal fumaroles from the upper Retaruke River in the western TVZ are mineralised deposits that have been ...
5 CitationsSource
#1Qiang Sun (CUMT: China University of Mining and Technology)H-Index: 22
#2Chao Lü (CUMT: China University of Mining and Technology)H-Index: 5
Last. Weiqiang Zhang (CUMT: China University of Mining and Technology)H-Index: 10
view all 6 authors...
Abstract This paper reports the variations of thermal conductivity, thermal diffusivity and heat capacity of sandstone after high-temperature heating. Experiments were carried out to test the thermal properties of sandstone which had been heated at temperatures ranging from room temperature to 900 °C in a furnace. Temperature has a significant impact on the thermal conductivity, thermal diffusivity and heat capacity of sandstone, which is closely related to the loss of water and damage of struct...
83 CitationsSource
#1Weiqiang Zhang (CUMT: China University of Mining and Technology)H-Index: 10
#2Qiang Sun (CUMT: China University of Mining and Technology)H-Index: 4
Last. Chao Lv (CUMT: China University of Mining and Technology)H-Index: 2
view all 5 authors...
Abstract The changes of mineral components, internal structure and water content of the rock after heating lead to the variation of the physical and mechanical properties. This paper aims to study the thermal effect (from 25 °C to 500 °C) on physical and mechanical properties (such as mass, density, porosity, P-wave velocity, compressive strength, peak strain, elastic modulus) of rock. A lot of reported results about it were summarized and many complementary tests have been carried out, the resu...
141 CitationsSource
4 CitationsSource
#1Qiang Sun (CAS: Chinese Academy of Sciences)H-Index: 4
#2Shuyun Zhu (CUMT: China University of Mining and Technology)H-Index: 5
Last. Lei Xue (CAS: Chinese Academy of Sciences)H-Index: 9
view all 3 authors...
This paper reports the relationship between electrical resistivity and rock failure during uniaxial compression. Experiments of rock samples on an electro-hydraulic servo-controlled testing machine show that the variation of electrical resistivity is closely related to rock deformation. Near to rock fracture, microcracks appear and change the microstructure of rock mass, causing the rupture of mineral crystal lattice, and the electrical resistivity has a rapid variation with the growth of cracks...
9 CitationsSource
#1Qiang Sun (CUMT: China University of Mining and Technology)H-Index: 22
#2Shuyun Zhu (CUMT: China University of Mining and Technology)H-Index: 1
This paper reports the relationship between wave velocity and stress/strain during rock brittle failure under compression. It is assumed that the rock is a strain-softening medium whose strength can be described by Weibull’s distribution. Based on renormalization group theory, it is found that the stress ratio λ c (the ratio of the stress at the critical point to the peak stress) depends mainly on the homogeneity index or shape parameter m in the Weibull’s distribution for the rock. Measured str...
11 CitationsSource
#1Lei Xue (CAS: Chinese Academy of Sciences)H-Index: 9
#2Siqing Qin (CAS: Chinese Academy of Sciences)H-Index: 13
view all 6 authors...
When rock samples are loaded until macroscopic fractures develop, the failure process can be divided into several stages based on axial and lateral strain responses or the acoustic emission sequence during uniaxial compression tests. Several stress thresholds may be identified: the crack closure stress σ cc, crack initiation stress σ ci, crack damage stress σ cd, and uniaxial compressive strength σ ucs; these may be used as a warning indicator for rock rupture. We investigated the crack damage s...
99 CitationsSource
Cited By6
Newest
#1Jun Peng (CSU: Central South University)
#2Tang Zhicheng (China University of Geosciences (Wuhan))H-Index: 12
Last. Di Hou
view all 3 authors...
Abstract null null Strength behavior of thermally-damaged rock is quite different from that of undamaged or intact rock. In this study, a concept of degradation of geological strength index (GSI) is used and a GSI-softening model in the framework of generalized Hoek-Brown (H B) failure criterion is proposed to characterize the strength behavior of thermally-damaged rock. The proposed GSI-softening model is then verified using several sets of test data collected from previous publications. It is ...
1 CitationsSource
#1Xiaoshuang Li (Shaoxing University)
#2Kun Peng (NDRI: National Dairy Research Institute)
Last. Di Hou
view all 4 authors...
Due to difference in mineral composition, cementation, and porosity, the strength behavior of sandstone after exposure to different high temperatures is complex. From literature review, it is found that a transition temperature in the treatment exists at which the strength of sandstone changes from slow increase or decrease to fast decrease. This paper studies the effect of high temperature treatment on mechanical behavior of a fine-grained sandstone with a focus on discussion of the controlling...
6 CitationsSource
#1Song Sha (WHU: Wuhan University)H-Index: 4
#2Guan Rong (WHU: Wuhan University)H-Index: 18
Last. Bowen Li (WHU: Wuhan University)H-Index: 1
view all 5 authors...
High temperature may cause damage to microstructure of rock, which has a significant effect on rock behavior. In this study, the changes in tensile strength and brittleness of sandstones and granites with temperature and corresponding mechanisms are summarized and analyzed based on an extensive review of literature. The results show that as thermal treatment temperature increases to 400 °C, the tensile strength of sandstones changes with two forms: continuously increases or first decreases and t...
4 CitationsSource
#1Guoyin Wu (Ministry of Education)H-Index: 1
#2Kui Wang (Chongqing Jiaotong University)H-Index: 2
Last. Zhen Huang (Ministry of Education)H-Index: 1
view all 5 authors...
In complex rock engineering, understanding the stress state and determining stability and damage evolution are necessary. To more accurately provide a theoretical basis for judging the stress state of bedrock in engineering, this study experimentally addressed the damage evolution of sandstone under loading and unloading conditions. A theoretical relationship between rock resistivity and porosity was obtained according to the Archie formula, which allowed the derivation of the sandstone damage v...
6 CitationsSource
#1Song Sha (WHU: Wuhan University)H-Index: 4
#2Guan Rong (WHU: Wuhan University)H-Index: 18
Last. Zhijun Wu (WHU: Wuhan University)H-Index: 19
view all 5 authors...
Deformation and stability of surrounding rock of a tunnel could be significantly affected by the fire accident-induced open-fire damage. In this study, the influence of open-fire damage on the P-wave velocity, Brazilian tensile strength (BTS), and the associated microstructure evolution of granite is investigated. The open-fire damage is generated by heating the rock sample with charcoal fire for 3 h prior to the subsequent tests. P-wave velocity of intact and heated specimens is measured. The m...
9 CitationsSource
#1Jinwen BaiH-Index: 1
#2Guorui FengH-Index: 14
Last. Wang PengfeiH-Index: 1
view all 6 authors...
16 CitationsSource