Durability of CFRP-steel interface modified by liquid rubber under chlorine salt erosion

被引：0
|
作者：
Pang Y. [1 ]
Lyu Y. [1 ]
Wang Q. [2 ]
机构：
[1] School of Civil Engineering, Zhengzhou University, Zhengzhou
[2] School of Civil and Transportation Engineering, Hebei University of Technology, Tianjin
来源：
Fuhe Cailiao Xuebao/Acta Materiae Compositae Sinica | 2024年 / 41卷 / 06期
基金：
中国博士后科学基金; 中国国家自然科学基金;
关键词：
bond-slip relationship; CFRP reinforced steel plate; chloride erosion; durability; liquid rubber modification;
D O I：
10.13801/j.cnki.fhclxb.20231110.001
中图分类号：
学科分类号：
摘要：
Fifty-four carbon fiber reinforced resin composite (CFRP)-steel double lap specimens were designed to study the effects of liquid rubber modifier content and corrosion age on the mechanical properties of CFRP-steel modified interface under the erosion of two kinds of chlorine salts: High temperature water bath and dry-wet cycles at normal temperature. The results show that under the action of high temperature water bath and dry-wet cycles at normal temperature, the unmodified specimens show CFRP interlayer stripping failure and steel/binder interface stripping failure, respectively, while the liquid rubber modified specimens could transform the failure mode into adhesive cohesion failure, among which 10wt% liquid rubber has the best effect on improving interface durability. After 180 days of high temperature water bath and dry-wet cycles chloride salt erosion at normal temperature, the ultimate load retention rates of the specimens increase by 28.11% and 29.94%, respectively, compared with that of the unmodified specimens. Based on the experimental results, modified interface bond-slip models are established which are suitable for two kinds of chlorine salt erosion environments, and the predicted results are in good agreement with the experimental results. © 2024 Beijing University of Aeronautics and Astronautics (BUAA). All rights reserved.
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页码：3219 / 3231
页数：12
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