Mechanical property and thermal damage factor of limestone at high temperature | |
Jian Yang; Li-Yun Fu; Weiqiang Zhang; Zhiwei Wang | |
2019 | |
Source Publication | International Journal of Rock Mechanics and Mining Sciences
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Volume | 117Pages:11-19 |
Abstract | Experiments with ten groups of limestone specimens (four samples per group) under ten specific temperatures, 25 °C, 100 °C, 200 °C, 300 °C, 400 °C, 500 °C, 600 °C, 700 °C, 800 °C, and 900 °C, show that the high-temperature effect on the elastic modulus of rocks conforms to thermoelastic responses with a quadratic temperature function. The thermal damage factor can be reduced, by ignoring the effect of Poisson's ratios and densities, to simply a ratio of the P-wave velocities before and after high-temperature treatments. Based on the collected experimental data, we correlate the P-wave velocities change rate with both the peak compressive strength and effective solid matrix. It demonstrates that the high-temperature effect on the thermal damage factor can be directly expressed as the rate of change in the peak compressive strength and effective solid matrix. All these properties (thermal damage factor calculated by the P-wave velocity, peak compressive strength, and effective solid matrix) share a similar exponential trend with increasing temperature. The rates of change in the elastic modulus, P-wave velocity, peak compressive strength, and effective solid matrix also exhibit a similar powerful trend with increasing temperature. This study provides insight into the detailed characteristics of thermal damage related to the mechanical property of limestones exposed to high temperature. |
Keyword | Limestone high Temperature thermal Damage Factor: Elastic Modulus effective Solid Matrix |
Indexed By | SCI |
Language | 英语 |
Document Type | 期刊论文 |
Identifier | http://ir.gyig.ac.cn/handle/42920512-1/10521 |
Collection | 矿床地球化学国家重点实验室 |
Affiliation | 1.State Key Laboratory of Ore Deposit Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang, 550081, China 2.University of Chinese Academy of Sciences, Beijing, 100049, China 3.School of Geosciences, China University of Petroleum (East China), Qingdao, 266580, China 4.School of Resources and Geosciences, China University of Mining and Technology, Xuzhou, 221116, China 5.Key Laboratory of Petroleum Resource Research, Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing, 100029, China |
Recommended Citation GB/T 7714 | Jian Yang;Li-Yun Fu;Weiqiang Zhang;Zhiwei Wang. Mechanical property and thermal damage factor of limestone at high temperature[J]. International Journal of Rock Mechanics and Mining Sciences,2019,117:11-19. |
APA | Jian Yang;Li-Yun Fu;Weiqiang Zhang;Zhiwei Wang.(2019).Mechanical property and thermal damage factor of limestone at high temperature.International Journal of Rock Mechanics and Mining Sciences,117,11-19. |
MLA | Jian Yang;Li-Yun Fu;Weiqiang Zhang;Zhiwei Wang."Mechanical property and thermal damage factor of limestone at high temperature".International Journal of Rock Mechanics and Mining Sciences 117(2019):11-19. |
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