Time-dependent brittle creep-relaxation failure in concrete

doi:10.1680/jmacr.15.00186

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	Time-dependent brittle creep-relaxation failure in concrete
	Wang YC; Zhang BJ; Hao SW(郝圣旺); Hao, SW (reprint author), Yanshan Univ, Sch Civil Engn & Mech, Qinhuangda, Peoples R China.; Hao, SW (reprint author), Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100080, Peoples R China.
发表期刊	MAGAZINE OF CONCRETE RESEARCH
	2016
卷号	68 期号:13 页码:692-700
ISSN	0024-9831
摘要	In real-world engineering applications, concrete is usually subjected to both creep and stress relaxation. Observations are necessary to understand this coupling process. This paper presents the results of brittle creep-relaxation experiments performed on concrete. Instead of tending to an asymptotic value, the stress in all the test specimens dropped sharply with a rapid increase in the strain before failure, when the boundary displacement was kept constant. The acceleration in the tertiary stage exhibited power-law behaviour, with the exponent - alpha being -0.58 +/- 0.13 for the stress rate and -0.56 +/- 0.12 for the strain rate. For each specimen, the time-to-failure exhibited power-law dependence on the secondary creep (relaxation) rate, with the exponent being 0.97 +/- 0.09 for strain and 0.98 +/- 0.09 for stress. These results suggest that it should be possible to predict the time-to-failure of concrete by monitoring its behaviour during the steady and critical stages.
关键词	Rheology Activated Sludge Anaerobic Digestion Microwave-h2o2 Pretreatment
DOI	10.1680/jmacr.15.00186
URL	查看原文
收录类别	SCI ; EI
语种	英语
WOS记录号	WOS:000377030900004
关键词[WOS]	Rheology ; Activated sludge ; Anaerobic digestion ; Microwave-H2O2 ; Pretreatment
WOS研究方向	Construction & Building Technology ; Materials Science
WOS类目	Construction & Building Technology ; Materials Science, Multidisciplinary
项目资助者	This work was supported by the Natural Science Foundation of Hebei province, China (D2015203398), the National Basic Research Program of China (grant no. 2013CB834100), and the Opening Fund of State Key Laboratory of Non-linear Mechanics, Institute of Mechanics, Chinese Academy of Science.
课题组名称	LNM材料的分子/细观统计力学行为
论文分区	二类
力学所作者排名	False
引用统计	被引频次：6[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://dspace.imech.ac.cn/handle/311007/59555
专题	非线性力学国家重点实验室
通讯作者	Hao, SW (reprint author), Yanshan Univ, Sch Civil Engn & Mech, Qinhuangda, Peoples R China.; Hao, SW (reprint author), Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100080, Peoples R China.
推荐引用方式 GB/T 7714	Wang YC,Zhang BJ,Hao SW,et al. Time-dependent brittle creep-relaxation failure in concrete[J]. MAGAZINE OF CONCRETE RESEARCH,2016,68,13,:692-700.
APA	Wang YC,Zhang BJ,郝圣旺,Hao, SW ,&Hao, SW .(2016).Time-dependent brittle creep-relaxation failure in concrete.MAGAZINE OF CONCRETE RESEARCH,68(13),692-700.
MLA	Wang YC,et al."Time-dependent brittle creep-relaxation failure in concrete".MAGAZINE OF CONCRETE RESEARCH 68.13(2016):692-700.

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