IMECH-IR  > 非线性力学国家重点实验室
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.
Source PublicationMAGAZINE OF CONCRETE RESEARCH
2016
Volume68Issue:13Pages:692-700
ISSN0024-9831
AbstractIn 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.
KeywordRheology Activated Sludge Anaerobic Digestion Microwave-h2o2 Pretreatment
DOI10.1680/jmacr.15.00186
URL查看原文
Indexed BySCI ; EI
Language英语
WOS IDWOS:000377030900004
WOS KeywordRheology ; Activated sludge ; Anaerobic digestion ; Microwave-H2O2 ; Pretreatment
WOS Research AreaConstruction & Building Technology ; Materials Science
WOS SubjectConstruction & Building Technology ; Materials Science, Multidisciplinary
Funding OrganizationThis 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.
DepartmentLNM材料的分子/细观统计力学行为
Classification二类
RankingFalse
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Document Type期刊论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/59555
Collection非线性力学国家重点实验室
Corresponding AuthorHao, 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.
Recommended Citation
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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