Reliability of bonding between recycled concrete and steel rebar

被引：0
|
作者：
Yang H. [1 ,2 ]
Chen W. [1 ]
Zhang T. [1 ]
Jiang J. [1 ]
机构：
[1] College of Civil and Architecture Engineering, Guangxi University, Nanning
[2] Key Laboratory of Disaster Prevention and Engineering Safety of Guangxi, Guangxi University, Nanning
来源：
Zhongnan Daxue Xuebao (Ziran Kexue Ban)/Journal of Central South University (Science and Technology) | 2019年 / 50卷 / 01期
基金：
中国国家自然科学基金;
关键词：
Anchorage length; Bond; Recycled concrete; Reliability;
D O I：
10.11817/j.issn.1672-7207.2019.01.024
中图分类号：
学科分类号：
摘要：
66 pull-out specimens containing different levels of recycled coarse aggregate(RCA) were fabricated to study the effect of RCA replacement, layer thickness, stirrups ratios on the bond strength between recycled concrete(RC) and steel rebar. Results from 892 pull-out tests and 336 compressive tests were statistically analyzed. The formula of ultimate bond strength between RC and steel rebar was established. Two kinds of design standard were considered for RC mixture, i.e., the mixture of RC was directly designed as conventional concrete(CC), or it was designed to get a comparable compressive strength with CC. The Monte Carlo method was adopted to calculate the reliability and the anchorage length of reinforced RC based on the two kinds of design methods. The results show that the anchorage length of CC suggested in Chinese code GB 50010-2010 is applicable for RC design to get a comparable compressive strength with CC, but the anchorage length of RC designed as CC should be increased by 10%-15% compared with that of CC. © 2019, Central South University Press. All right reserved.
引用
收藏
页码：189 / 197
页数：8
相关论文
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