An Experimental Study on Bond-Slip Constitutive
Relationships of the CFRP-Concrete Interface
>In view of the light weight, high strength, corrosion resistance and convenient construction of carbon fiber reinforced polymer (CFRP), using CFRP to strengthen structure is becoming more and more widely. However, there is no commonly accepted understanding of the constitutive relationship of the bonding shear stress and slip between con-crete and CFRP bonded interface; especially the decline of the constitutive relation is more difficult to measure accu-rately. The aim of this paper is to improve the experiment to explore bond stress and slip (τ-δ) constitutive relation of the bonding interface, making sure that the experiment can measure the τ-δ constitutive relation curve of CFRP-concrete interface. Double pull test was adopted with the improved specimen, using the horizontal load, to eliminate additional bending moment influence and improve the experimental accuracy. 17 specimens were tested to measure the τ-δ curves. According to the features of the constitutive relation curves, the mechanical characteristics of the bonding interface were further analyzed.
文章引用: 胡砚龙 , 李云飞 , 王 辉 , 吴小勇 (2013) CFRP-混凝土界面粘结滑移本构关系试验研究 。 土木工程， 2， 275-278. doi: 10.12677/HJCE.2013.25046
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