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Laboratory Investigation on Physical and Mechanical Properties of Granite After Heating and Water-Cooling Treatment
文献类型：期刊论文
| 作者 | Zhang, Fan2,3; Zhao, Jianjian2; Hu, Dawei3; Skoczylas, Frederic2,4; Shao, Jianfu1,2 |
| 刊名 | ROCK MECHANICS AND ROCK ENGINEERING
 |
| 出版日期 | 2018 |
| 卷号 | 51期号:3页码:677-694 |
| 关键词 | Granite High temperature Heating and water-cooling treatment Physical and mechanical properties |
| ISSN号 | 0723-2632 |
| DOI | 10.1007/s00603-017-1350-8 |
| 英文摘要 | High-temperature treatment may cause changes in physical and mechanical properties of rocks. Temperature changing rate (heating, cooling and both of them) plays an important role in those changes. Thermal conductivity tests, ultrasonic pulse velocity tests, gas permeability tests and triaxial compression tests are performed on granite samples after a heating and rapid cooling treatment in order to characterize the changes in physical and mechanical properties. Seven levels of temperature (from 25 to 900 A degrees C) are used. It is found that the physical and mechanical properties of granite are significantly deteriorated by the thermal treatment. The porosity shows a significant increase from 1.19% at the initial state to 6.13% for samples heated to 900 A degrees C. The increase in porosity is mainly due to three factors: (1) a large number of microcracks caused by the rapid cooling rate; (2) the mineral transformation of granite through high-temperature heating and water-cooling process; (3) the rapid cooling process causes the mineral particles to weaken. As the temperature of treatment increases, the thermal conductivity and P-wave velocity decrease while the gas permeability increases. Below 200 A degrees C, the elastic modulus and cohesion increase with temperature increasing. Between 200 and 500 A degrees C, the elastic modulus and cohesion have no obvious change with temperature. Beyond 500 A degrees C, as the temperature increases, the elastic modulus and cohesion obviously decrease and the decreasing rate becomes slower with the increase in confining pressure. Poisson's ratio and internal frictional coefficient have no obvious change as the temperature increases. Moreover, there is a transition from a brittle to ductile behavior when the temperature becomes high. At 900 A degrees C, the granite shows an obvious elastic-plastic behavior. |
| WOS研究方向 | Engineering ; Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:000426760700002 |
| 出版者 | SPRINGER WIEN |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/4238]  |
| 专题 | 岩土力学所知识全产出_期刊论文 国家重点实验室知识产出_期刊论文 |
| 作者单位 | 1.Univ Lille, Lab Mech Lille; 2.Hubei Univ Technol, Sch Civil Engn Architecture & Environm ; 3.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn ; 4.Ecole Cent Lille, Lab Mech Lille |
| 推荐引用方式 GB/T 7714 | Zhang, Fan,Zhao, Jianjian,Hu, Dawei,et al. Laboratory Investigation on Physical and Mechanical Properties of Granite After Heating and Water-Cooling Treatment[J]. ROCK MECHANICS AND ROCK ENGINEERING,2018,51(3):677-694. |
| APA | Zhang, Fan,Zhao, Jianjian,Hu, Dawei,Skoczylas, Frederic,&Shao, Jianfu.(2018).Laboratory Investigation on Physical and Mechanical Properties of Granite After Heating and Water-Cooling Treatment.ROCK MECHANICS AND ROCK ENGINEERING,51(3),677-694. |
| MLA | Zhang, Fan,et al."Laboratory Investigation on Physical and Mechanical Properties of Granite After Heating and Water-Cooling Treatment".ROCK MECHANICS AND ROCK ENGINEERING 51.3(2018):677-694. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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