Brittle Creep Failure, Critical Behavior, and Time-to-Failure Prediction of Concrete under Uniaxial Compression

doi:10.1155/2015/101035

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	Brittle Creep Failure, Critical Behavior, and Time-to-Failure Prediction of Concrete under Uniaxial Compression
	Wang YC; Zhou N; Chang FQ; Hao SW(郝圣旺); Hao, SW (reprint author), Yanshan Univ, Sch Civil Engn & Mech, Qinhuangdao 066004, Peoples R China.
发表期刊	ADVANCES IN MATERIALS SCIENCE AND ENGINEERING
	2015
页码	101035
ISSN	1687-8434
摘要	Understanding the time-dependent brittle deformation behavior of concrete as a main building material is fundamental for the lifetime prediction and engineering design. Herein, we present the experimental measures of brittle creep failure, critical behavior, and the dependence of time-to-failure, on the secondary creep rate of concrete under sustained uniaxial compression. A complete evolution process of creep failure is achieved. Three typical creep stages are observed, including the primary (decelerating), secondary (steady state creep regime), and tertiary creep (accelerating creep) stages. The time-to-failure shows sample-specificity although all samples exhibit a similar creep process. All specimens exhibit a critical power-law behavior with an exponent of -0.51 +/- 0.06, approximately equal to the theoretical value of -1/2. All samples have a long-term secondary stage characterized by a constant strain rate that dominates the lifetime of a sample. The average creep rate expressed by the total creep strain over the lifetime (t(f) - t(0)) for each specimen shows a power-law dependence on the secondary creep rate with an exponent of -1. This could provide a clue to the prediction of the time-to-failure of concrete, based on the monitoring of the creep behavior at the steady stage.
DOI	10.1155/2015/101035
URL	查看原文
收录类别	SCI ; EI
语种	英语
WOS记录号	WOS:000362753900001
关键词[WOS]	FRACTURE-BEHAVIOR ; TENSILE CREEP ; BASIC CREEP ; SHRINKAGE ; MODEL ; STATISTICS ; ROCK ; AGE
WOS研究方向	Materials Science
WOS类目	Materials Science, Multidisciplinary
项目资助者	This work is supported by National Basic Research Program of China (Grant 2013CB834100) and Natural Science Foundation of Hebei Province (D2015203398). The authors acknowledge the useful comments of the editor, Joao M. P. Q. Delgado, and of the anonymous reviewers.
课题组名称	LNM材料的分子/细观统计力学行为
论文分区	Q4
引用统计	被引频次：4[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/311007/58404
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, Qinhuangdao 066004, Peoples R China.
推荐引用方式 GB/T 7714	Wang YC,Zhou N,Chang FQ,et al. Brittle Creep Failure, Critical Behavior, and Time-to-Failure Prediction of Concrete under Uniaxial Compression[J]. ADVANCES IN MATERIALS SCIENCE AND ENGINEERING,2015:101035.
APA	Wang YC,Zhou N,Chang FQ,郝圣旺,&Hao, SW .(2015).Brittle Creep Failure, Critical Behavior, and Time-to-Failure Prediction of Concrete under Uniaxial Compression.ADVANCES IN MATERIALS SCIENCE AND ENGINEERING,101035.
MLA	Wang YC,et al."Brittle Creep Failure, Critical Behavior, and Time-to-Failure Prediction of Concrete under Uniaxial Compression".ADVANCES IN MATERIALS SCIENCE AND ENGINEERING (2015):101035.

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