- 摘 要
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(1 北京工业大学 100022; 2 深圳市海川实业股份有限公司 518040)
【提要】 通过不同温度条件下(常温~100℃)的芳纶纤维布配套树脂类粘结材料与钢板、混凝土之间正拉粘结强度试验和芳纶纤维布加固素混凝土梁的受弯试验,研究了环境温度对AFRP布配套粘结材料的力学性能和界面粘结性能的影响。试验分析表明,当环境温度≤70℃时,AFRP布的配套树脂胶与钢板之间的粘结强度不会发生软化现象;当温度≤60℃时,AFRP布的配套树脂胶与底胶的粘结强度不会发生软化现象。
【关键词】 芳纶纤维布 加固 温度 力学性能 粘结强度 钢板 混凝土
Study on Effect of Temperatures on Mechanical Properties of Adhesives for AFRP Sheet/Deng Zongcai1,Zhang Jianwei 1,2,Niu Cuibing1,Du Xiuli1,He Weiping2(1 Beijing University of Technology,Beijing 100022,China;2 Ocean Power
Corporation Postdoctoral Programme,Shenzhen 518040,China)
Abstract:The experimental studies on the tensile adhesive strength between adhesives for aramid fiber reinforced plastic (AFRP) sheets and steel plate and between the adhesives and concrete are carried out at different temperatures (room temperature~100℃). The flexural experiment of strengthening concrete beams with AFRP sheet is carried out at different temperatures. The test results show that when the temperature is lower than 70℃,the adhesive strength between adhesives for AFRP sheets and steel plate won"t come into softening;when the temperature is lower than 60℃,the adhesive strength between adhesives for AFRP sheets and concrete won"t come into softening.
Keywords:AFRP sheet;strengthening;temperature;mechanical property; adhesive strength;steel plate;concrete
*北京市自然科学基金重点项目(8051001);北京市教委资助项目(KM200610005007)。