• 综合
  • 标题
  • 关键词
  • 摘要
  • 学者
  • 期刊-刊名
  • 期刊-ISSN
  • 会议名称
搜索

作者:

Deng, Zongcai (Deng, Zongcai.) (学者:邓宗才) | Wan, Cao (Wan, Cao.)

收录:

EI Scopus PKU CSCD

摘要:

A total of 96 test specimens with embedded reinforcing bars were strengthened by two layer of transverse CFRP (carbon fiber sheets) after accelerated corrosion. Pullout tests on the specimens were conducted to study the effect of CFRP confinement on the bond behavior between corroded reinforcement and steel fibrous concrete, considering the contributions of different elements, including reinforcing bar types, cover depths, corrosion rates, CFRP confinements, and steel fiber. The failure mechanisms were studied. The test results show that CFRP confinements can make the failure mode of deformed reinforcing bar specimens change from steel fibrous concrete splitting to bar pull-out. The main influencing factors of the ultimate bond strength are reinforcement bar types and cover depths, the ultimate bond strength of deformed reinforcement bar specimens is twice as large as that of plain reinforcement bar specimens, and the ultimate bond strength increases when the cover depth changes from 40mm to 60mm. CFRP is effective on slowing down the bond stress reduction rate and maintaining the bond strength. When the corrosion rate is less than 5%, the ultimate bond strength of corroded steel fibrous concrete specimens increases gradually along with the rise of corrosion rate, and decreases when the corrosion rate is higher than 5%. The steel fiber can increase the bond strength of reinforcement and steel fibrous concrete effectively, and make the descending branch of bond-slip curves much smoother.

关键词:

Bars (metal) Bond strength (materials) Carbon fiber reinforced plastics Carbon fibers Concretes Concrete testing Corrosion Corrosion rate Failure (mechanical) Reinforcement Steel corrosion Steel fibers Steel testing

作者机构:

  • [ 1 ] [Deng, Zongcai]The Key Laboratory of Urban Security and Disaster Engineering of the Ministry of Education, Beijing University of Technology, Beijing 100124, China
  • [ 2 ] [Wan, Cao]The Key Laboratory of Urban Security and Disaster Engineering of the Ministry of Education, Beijing University of Technology, Beijing 100124, China

通讯作者信息:

电子邮件地址:

查看成果更多字段

相关关键词:

来源 :

China Civil Engineering Journal

ISSN: 1000-131X

年份: 2012

期: 8

卷: 45

页码: 41-47

被引次数:

WoS核心集被引频次: 0

SCOPUS被引频次:

ESI高被引论文在榜: 0 展开所有

万方被引频次:

中文被引频次:

近30日浏览量: 2

在线人数/总访问数:1715/2904629
地址:北京工业大学图书馆(北京市朝阳区平乐园100号 邮编:100124) 联系我们:010-67392185
版权所有:北京工业大学图书馆 站点建设与维护:北京爱琴海乐之技术有限公司