The impact of high temperature on mechanical properties and behaviors of sandstone
The impact of high temperature environments on the physical and mechanical properties of rocks is a significant factor to consider. The investigation into the impact of elevated temperatures on the physical and mechanical characteristics of rocks holds great importance in the advancement and exploit...
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| Format: | Article |
| Language: | English |
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Frontiers Media S.A.
2024-02-01
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| Series: | Frontiers in Earth Science |
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| Online Access: | https://www.frontiersin.org/articles/10.3389/feart.2024.1322495/full |
| _version_ | 1797300084899053568 |
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| author | Juan Jin Juan Jin Jiandong Liu Jiandong Liu Weixi Chen Guoping Li Wei Cheng Wei Cheng Xiaowen Zhang Xiaowen Zhang Yifan Luo |
| author_facet | Juan Jin Juan Jin Jiandong Liu Jiandong Liu Weixi Chen Guoping Li Wei Cheng Wei Cheng Xiaowen Zhang Xiaowen Zhang Yifan Luo |
| author_sort | Juan Jin |
| collection | DOAJ |
| description | The impact of high temperature environments on the physical and mechanical properties of rocks is a significant factor to consider. The investigation into the impact of elevated temperatures on the physical and mechanical characteristics of rocks holds great importance in the advancement and exploitation of deep-seated mineral reserves, as well as in ensuring the safety and stability of subterranean engineering projects. This study utilizes the state-of-the-art GCTS Mechanical Loading Test System to conduct uniaxial and triaxial compression tests on sandstone after thermal treatment from 25°C to 650°C. In addition, XRD, SEM and nuclear magnetic resonance experiments were carried out on the sandstone after thermal treatment. The aim of the experiments is to provide a quantitative characterization of mechanical properties and behaviors of the rock samples. The results show that the mass, density, and wave velocity of sandstone decrease with increasing temperature, while volume and porosity increase. The mass, volume, and rate of density change of sandstone exhibit a significant increase when subjected to temperatures above 500°C. The uniaxial compressive strength and elastic modulus exhibit an initial increase followed by a subsequent decrease as the temperature rises, with 300°C serving as the critical turning point. The axial peak strain and Poisson’s ratio increase with increasing temperature. The cohesion decreases with increasing temperature, while the internal friction angle increases. Additionally, it is observed that the rate of change for both properties exhibits an increase beyond the temperature threshold of 400°C. |
| first_indexed | 2024-03-07T23:02:09Z |
| format | Article |
| id | doaj.art-66c992f64f6d414f89aced438e6a95c3 |
| institution | Directory Open Access Journal |
| issn | 2296-6463 |
| language | English |
| last_indexed | 2024-03-07T23:02:09Z |
| publishDate | 2024-02-01 |
| publisher | Frontiers Media S.A. |
| record_format | Article |
| series | Frontiers in Earth Science |
| spelling | doaj.art-66c992f64f6d414f89aced438e6a95c32024-02-22T12:58:57ZengFrontiers Media S.A.Frontiers in Earth Science2296-64632024-02-011210.3389/feart.2024.13224951322495The impact of high temperature on mechanical properties and behaviors of sandstoneJuan Jin0Juan Jin1Jiandong Liu2Jiandong Liu3Weixi Chen4Guoping Li5Wei Cheng6Wei Cheng7Xiaowen Zhang8Xiaowen Zhang9Yifan Luo10Key Laboratory of Oil & Gas Production, CNPC, Beijing, ChinaResearch Institute of Petroleum Exploration & Development, PetroChina, Beijing, ChinaKey Laboratory of Oil & Gas Production, CNPC, Beijing, ChinaResearch Institute of Petroleum Exploration & Development, PetroChina, Beijing, ChinaEngineering and Technology Department, PetroChina Qinghai Oilfield Company, Dunhuang, ChinaDrilling & Production Technology Research Institute, PetroChina Qinghai Oilfield Company, Dunhuang, ChinaKey Laboratory of Oil & Gas Production, CNPC, Beijing, ChinaResearch Institute of Petroleum Exploration & Development, PetroChina, Beijing, ChinaKey Laboratory of Oil & Gas Production, CNPC, Beijing, ChinaResearch Institute of Petroleum Exploration & Development, PetroChina, Beijing, ChinaSchool of Civil and Resources Engineering, University of Science and Technology Beijing, Beijing, ChinaThe impact of high temperature environments on the physical and mechanical properties of rocks is a significant factor to consider. The investigation into the impact of elevated temperatures on the physical and mechanical characteristics of rocks holds great importance in the advancement and exploitation of deep-seated mineral reserves, as well as in ensuring the safety and stability of subterranean engineering projects. This study utilizes the state-of-the-art GCTS Mechanical Loading Test System to conduct uniaxial and triaxial compression tests on sandstone after thermal treatment from 25°C to 650°C. In addition, XRD, SEM and nuclear magnetic resonance experiments were carried out on the sandstone after thermal treatment. The aim of the experiments is to provide a quantitative characterization of mechanical properties and behaviors of the rock samples. The results show that the mass, density, and wave velocity of sandstone decrease with increasing temperature, while volume and porosity increase. The mass, volume, and rate of density change of sandstone exhibit a significant increase when subjected to temperatures above 500°C. The uniaxial compressive strength and elastic modulus exhibit an initial increase followed by a subsequent decrease as the temperature rises, with 300°C serving as the critical turning point. The axial peak strain and Poisson’s ratio increase with increasing temperature. The cohesion decreases with increasing temperature, while the internal friction angle increases. Additionally, it is observed that the rate of change for both properties exhibits an increase beyond the temperature threshold of 400°C.https://www.frontiersin.org/articles/10.3389/feart.2024.1322495/fullrock mechanicshigh temperaturesandstoneGCTS mechanical loading test systemmechanical property |
| spellingShingle | Juan Jin Juan Jin Jiandong Liu Jiandong Liu Weixi Chen Guoping Li Wei Cheng Wei Cheng Xiaowen Zhang Xiaowen Zhang Yifan Luo The impact of high temperature on mechanical properties and behaviors of sandstone Frontiers in Earth Science rock mechanics high temperature sandstone GCTS mechanical loading test system mechanical property |
| title | The impact of high temperature on mechanical properties and behaviors of sandstone |
| title_full | The impact of high temperature on mechanical properties and behaviors of sandstone |
| title_fullStr | The impact of high temperature on mechanical properties and behaviors of sandstone |
| title_full_unstemmed | The impact of high temperature on mechanical properties and behaviors of sandstone |
| title_short | The impact of high temperature on mechanical properties and behaviors of sandstone |
| title_sort | impact of high temperature on mechanical properties and behaviors of sandstone |
| topic | rock mechanics high temperature sandstone GCTS mechanical loading test system mechanical property |
| url | https://www.frontiersin.org/articles/10.3389/feart.2024.1322495/full |
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