Influence of cooling rate on thermal degradation of physical and mechanical properties of granite

doi:10.1016/j.ijrmms.2020.104285

	Influence of cooling rate on thermal degradation of physical and mechanical properties of granite
	Zhang, Fan 2; Zhang, Yuhao 2; Yu, Yudong 2; Hu, Dawei 3; Shao, Jianfu 1,2
刊名	INTERNATIONAL JOURNAL OF ROCK MECHANICS AND MINING SCIENCES
	2020-05-01
卷号	129 页码:11
关键词	Granite Physical and mechanical properties Thermal effect Heating and cooling Thermal cracking Compression strength
ISSN号	1365-1609
DOI	10.1016/j.ijrmms.2020.104285
英文摘要	Large temperature changes may cause degradation in physical and mechanical properties of rocks. This degradation can be influenced by heating-cooling procedure. In this study, it is proposed to investigate the influence of cooling method after heating to high temperature on the degradation of physical and mechanical properties of granite. For this purpose, two different cooling procedures are considered, the rapid cold water cooling and the slow step-by-step cooling. Two groups of granite samples are first heated to a desired temperature ranging from 25 degrees C to 900 degrees C, and then cooled respectively by using these two methods. The porosity and ultrasonic velocity of the thermally treated samples are measured. Uniaxial and triaxial compression tests are also performed to evaluate the elastic properties and compression strength. It is found that for both groups of samples, the thermal treatment induces the porosity increase, the wave velocity decrease and the modification of elastic modulus and compression strength. But the modification of mechanical properties is clearly influenced by the thermal treatment procedure.
资助项目	National Key Research and Development Program of China[2018YFC0809600] ; National Key Research and Development Program of China[2018YFC0809601] ; National Natural Science Foundation of China[51979100] ; National Natural Science Foundation of China[51779252] ; Major Technological Innovation Projects of Hubei, China[2017AAA128]
WOS研究方向	Engineering ; Mining & Mineral Processing
语种	英语
出版者	PERGAMON-ELSEVIER SCIENCE LTD
WOS记录号	WOS:000536485000005
内容类型	期刊论文
源URL	[http://119.78.100.198/handle/2S6PX9GI/24261]
专题	中科院武汉岩土力学所
通讯作者	Shao, Jianfu
作者单位	1.Univ Lille, CNRS, FRE2016, LaMcube, F-59000 Lille, France 2.Hubei Univ Technol, Sch Civil Engn Architecture & Environm, Wuhan 430068, Peoples R China 3.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn, Wuhan 430071, Peoples R China
推荐引用方式 GB/T 7714	Zhang, Fan,Zhang, Yuhao,Yu, Yudong,et al. Influence of cooling rate on thermal degradation of physical and mechanical properties of granite[J]. INTERNATIONAL JOURNAL OF ROCK MECHANICS AND MINING SCIENCES,2020,129:11.
APA	Zhang, Fan,Zhang, Yuhao,Yu, Yudong,Hu, Dawei,&Shao, Jianfu.(2020).Influence of cooling rate on thermal degradation of physical and mechanical properties of granite.INTERNATIONAL JOURNAL OF ROCK MECHANICS AND MINING SCIENCES,129,11.
MLA	Zhang, Fan,et al."Influence of cooling rate on thermal degradation of physical and mechanical properties of granite".INTERNATIONAL JOURNAL OF ROCK MECHANICS AND MINING SCIENCES 129(2020):11.