A fracture mechanics-based method for prediction of cracking of circular and elliptical concrete rings under restrained shrinkage

被引：45
|
作者：
Dong, Wei [1 ]
Zhou, Xiangming [2 ]
Wu, Zhimin [1 ]
机构：
[1] Dalian Univ Technol, State Key Lab Coastal & Offshore Engn, Dalian 116024, Peoples R China
[2] Brunel Univ, Sch Engn & Design, Uxbridge UB8 3PH, Middx, England
来源：
ENGINEERING FRACTURE MECHANICS | 2014年 / 131卷
基金：
英国工程与自然科学研究理事会; 中国国家自然科学基金;
关键词：
Brittle fracture; Concrete; Crack initiation; Environmental cracking; R-curves; Residual stresses; Stress intensity factor; Test standards; FIBER-REINFORCED-CONCRETE; CEMENT-BASED MATERIALS; EARLY-AGE CRACKING; STRESS DEVELOPMENT; SPECIMEN GEOMETRY; RESIDUAL-STRESS; BEHAVIOR;
D O I：
10.1016/j.engfracmech.2014.10.015
中图分类号：
O3 [力学];
学科分类号：
08 ; 0801 ;
摘要：
A new experimental method, utilizing elliptical ring specimens, is developed for assessing the likelihood of cracking and cracking age of concrete subject to restrained shrinkage. To investigate the mechanism of this new ring test, a fracture mechanics-based numerical approach is proposed to predict crack initiation in restrained concrete rings by using the R-curve method. It has been found that numerical results accord well with experimental results in terms of cracking ages for both circular and elliptical concrete rings, indicating that the proposed fracture mechanics-based numerical approach is reliable for analyzing cracking in concrete ring specimens subject to restrained shrinkage. (C) 2014 The Authors. Published by Elsevier Ltd. This is an open access article under the CC BY license.
引用
收藏
页码：687 / 701
页数：15
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