Experimental Study on Thermal Expansion Behavior of Concrete under Three-Dimensional Stress

doi:10.1155/2021/5597918

	Experimental Study on Thermal Expansion Behavior of Concrete under Three-Dimensional Stress
	Yu, Zhipeng 1,3; Zhang, Fan 1; Ma, Xiao 2,3; Yang, Fujian 2,3; Hu, Dawei 2,3; Zhou, Hui 2,3
刊名	ADVANCES IN CIVIL ENGINEERING
	2021-03-09
卷号	2021 页码:8
ISSN号	1687-8086
DOI	10.1155/2021/5597918
英文摘要	Concrete is widely used in underground engineering and bears three-dimensional stress transmitted by overlying load. When a fire occurs, the thermal expansion of concrete structure under such stress state is different from that under stress-free state. For this purpose, a self-developed real-time high-temperature true triaxial test system was applied to investigate the thermal expansion behavior of concrete under three-dimensional stress state. The thermal expansion strain of concrete under the three-dimensional stress undergoes strain increasing and strain stabilizing stages. At 600 degrees C, the maximum thermal expansion strain of concrete under the three-dimensional stress is 0.75%. The average coefficient of thermal expansion of concrete under three-dimensional stress condition was then calculated, and its value reaches the minimum of 8.68 x 10(-6)/degrees C at 200 degrees C and the maximum of 13.41 x 10(-6)/degrees C at 500 degrees C. Comparing the coefficient of thermal expansion of concrete under stress-free condition given by Eurocode, it is found that the three-dimensional stress has an obvious restraint on the thermal expansion of concrete. The research results can provide theoretical basis for the stability analysis of underground engineering concrete structures under high-temperature environment.
资助项目	National Key R&D Program of China[2018YFC0809600] ; National Key R&D Program of China[2018YFC0809601] ; National Natural Science Foundation of China[51779252] ; National Natural Science Foundation of China[51479193] ; China Geological Survey Bureau[DD20190128] ; Major Technological Innovation Projects of Hubei[2017AAA128]
WOS研究方向	Construction & Building Technology ; Engineering
语种	英语
出版者	HINDAWI LTD
WOS记录号	WOS:000631908000001
内容类型	期刊论文
源URL	[http://119.78.100.198/handle/2S6PX9GI/25945]
专题	中科院武汉岩土力学所
通讯作者	Zhang, Fan
作者单位	1.Hubei Univ Technol, Sch Civil Engn Architecture & Environm, Wuhan 430064, Hubei, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Chinese Acad Sci, State Key Lab Geomech & Geotech Engn, Inst Rock & Soil Mech, Wuhan 430071, Peoples R China
推荐引用方式 GB/T 7714	Yu, Zhipeng,Zhang, Fan,Ma, Xiao,et al. Experimental Study on Thermal Expansion Behavior of Concrete under Three-Dimensional Stress[J]. ADVANCES IN CIVIL ENGINEERING,2021,2021:8.
APA	Yu, Zhipeng,Zhang, Fan,Ma, Xiao,Yang, Fujian,Hu, Dawei,&Zhou, Hui.(2021).Experimental Study on Thermal Expansion Behavior of Concrete under Three-Dimensional Stress.ADVANCES IN CIVIL ENGINEERING,2021,8.
MLA	Yu, Zhipeng,et al."Experimental Study on Thermal Expansion Behavior of Concrete under Three-Dimensional Stress".ADVANCES IN CIVIL ENGINEERING 2021(2021):8.