IMECH-IR  > 非线性力学国家重点实验室
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.
Source PublicationADVANCES IN MATERIALS SCIENCE AND ENGINEERING
2015
Pages101035
ISSN1687-8434
AbstractUnderstanding 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.
DOI10.1155/2015/101035
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Indexed BySCI ; EI
Language英语
WOS IDWOS:000362753900001
WOS KeywordFRACTURE-BEHAVIOR ; TENSILE CREEP ; BASIC CREEP ; SHRINKAGE ; MODEL ; STATISTICS ; ROCK ; AGE
WOS Research AreaMaterials Science
WOS SubjectMaterials Science, Multidisciplinary
Funding OrganizationThis 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.
DepartmentLNM材料的分子/细观统计力学行为
ClassificationQ4
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Document Type期刊论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/58404
Collection非线性力学国家重点实验室
Corresponding AuthorHao, SW (reprint author), Yanshan Univ, Sch Civil Engn & Mech, Qinhuangdao 066004, Peoples R China.
Recommended Citation
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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