硫酸盐和冻融循环作用下CFRP-混凝土界面正拉粘结性能研究

摘要

对我国西部盐渍土地区硫酸盐和严寒环境对CFRP加固的混凝土界面之间正拉粘结性能的影响进行了研究,得出室温环境、水中冻融循环以及5%硫酸钠溶液中冻融循环三种环境下的正拉粘结强度,结果表明在硫酸盐和严寒环境共同作用下CFRP-混凝土之间的粘结性能随着循环次数的不同而强度有所变化.%This paper mainly studies the effect of sulphate saline soil in western areas of China and cold environment on the bonding performance of CFRP reinforced concrete interface.The adhesive property values are obtained in three different situations, namely, in the normal room temperature, in the freeze-thaw cycle in the water and in the thawing cycle in 5% sodium sulfate solution.The results show that bond performance under the joint action of sulphate and cold environment changes with the change of different cycles.