CFRP-高强混凝土界面抗冻性研究  

Properties of bonding interface between CFRP high strength concrete under different freezing-thawing cycles

作　　者：洪雷[1] 朵润民 王苏岩[1] 

机构地区：[1]大连理工大学海岸和近海工程国家重点实验室,辽宁大连116024

出　　处：《混凝土》2015年第10期64-67,共4页Concrete

基　　金：国家自然科学基金(51378089);海岸和近海工程国家重点实验室基金(SI14-3-2)

摘　　要：利用自行设计的加载装置,对不同冻融次数下的碳纤维增强复合材料CFRP-高强混凝土界面性能进行研究。研究表明:随着冻融次数的增加,双面剪切试验荷载-端部滑移曲线不能再用对数函数很好地表达,极限荷载降低较为明显,但是对剥离荷载没有较大影响;应变分布规律逐渐发生了改变,界面延性逐渐降低,界面的安全系数无法得到保证。The bonded joints between carbon fiber reinforced polymer（ CFRP） and high strength concrete subjected to different freezing-thawing cycles were studied by self-designed loading device and the results were analyzed.The test results indicate that with the increase of freezing-thawing cycles, load-displacement curves will be not expressed well by logarithmic function and ultimate bond load will decrease.But it has little effects on initial stripping load.The distribution of CFRP stain is changed and the ductility of bonding interface will decrease.

关 键 词：高强混凝土 冻融循环 CFRP 双剪试验 

分 类 号：TU528.31[建筑科学—建筑技术科学]