FRP筋在CR混凝土中的粘结性能

IF 2.9 4区工程技术 Q2 COMPUTER SCIENCE, INTERDISCIPLINARY APPLICATIONS

Computers and Concrete Pub Date : 2021-08-01 DOI:10.12989/CAC.2021.28.2.107

Jiongfeng Liang, Jianguo Liu, Lifei Fan, R. Ren, Wei Li, Wen-rui Yang

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引用次数: 1

摘要

研究了再生橡胶屑混凝土(CR)与纤维增强聚合物(FRP)钢筋的粘结性能。对57个再生细粒橡胶骨料含量分别为0%、5%、10%和15%的拉拔试件进行了试验研究。结果表明:再生橡胶屑混凝土拉拔试件具有相似的粘结应力-滑移曲线，可分为微滑移、混凝土内部开裂、拉拔和残余4个阶段;橡胶屑在混凝土中的使用降低了粘结强度。粘结强度随再生橡胶屑混凝土抗压强度的增大而减小。再生胶屑的种类和含量也会影响粘结强度。玻璃纤维增强聚合物(GFRP)棒材比玄武岩纤维增强聚合物(BFRP)棒材具有更强的粘结性。

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Bond behavior of FRP bars in CR concrete

This paper evaluated the bond behavior between recycled crumb rubber (CR) concrete and fiber reinforced polymer (FRP) bar. An experimental study consisting of fifty-seven pull-out specimens with fine recycled crumb rubber aggregate content of 0%, 5%,10% and 15% was described. The results showed that recycled crumb rubber concrete pull-out specimens exhibited similar bond stress-slip curves, which had four stages: the micro-slip, concrete internal cracking, pullout and residual stages. The use of crumb rubber in concrete reduced the bond strength. The bond strength decreased with the increase of the compressive strength of recycled crumb rubber concrete. The type and content of recycled crumb rubber also affected the bond strength. The glass fiber reinforced polymer (GFRP) bars tended to have stronger bonds than that of basalt fiber reinforced polymer (BFRP) bars.

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来源期刊

Computers and Concrete 工程技术-材料科学：表征与测试

CiteScore

8.60

自引率

7.30%

发文量

审稿时长

13.5 months

期刊介绍： Computers and Concrete is An International Journal that focuses on the computer applications in be considered suitable for publication in the journal. The journal covers the topics related to computational mechanics of concrete and modeling of concrete structures including plasticity fracture mechanics creep thermo-mechanics dynamic effects reliability and safety concepts automated design procedures stochastic mechanics performance under extreme conditions.