高温作用下沥青混凝土裂缝修补组合结构抗压性能研究  

Experimental Study on Uniaxial Compressive Characteristics of Asphalt Concrete Crack Repaired Composite Structure at High Temperature

作　　者：杨雁 池漪[2] 熊优优 崔天祥 YANG Yan;CHI Yi;XIONG You-you;CUI Tian-xiang(School of Civil Engineering,Central South University of Forestry and Technology,Changsha 410018,China;School of Road and Bridge Engineering,Hunan Communication Polytechnic,Changsha 410132,China)

机构地区：[1]中南林业科技大学土木工程学院,长沙410018 [2]湖南交通职业技术学院路桥工程学院,长沙410132

出　　处：《价值工程》2021年第14期182-185,共4页Value Engineering

基　　金：湖南省交通科技资助项目(201702);中南林业科技大学研究生科技创新基金资助项目(CX20192042)。

摘　　要：选取环氧树脂胶、环氧丙烯酸酯/聚氨酯互穿聚合物网络(EA/PU IPN)修补材料分别对垂直裂缝与V型裂缝进行修补,模拟30℃、40℃、50℃、60℃四个高温作用环境,通过单轴压缩试验研究高温作用下裂缝修补组合结构抗压性能衰变规律。结果表明:随着温度升高,裂缝修补组合结构的抗压性能变差,损伤速率逐渐增大;垂直裂缝修补组合结构的抗压性能优于V型裂缝修补组合结构,且环氧树脂胶对两种裂缝的修补效果均好于EA/PU IPN修补材料。Epoxy resin adhesive and EA/PU IPN are selected to repair vertical cracks and V-shaped cracks respectively.By simulating four high temperature environments,30℃,40℃,50℃and 60℃,the uniaxial compression test was carried out to study the uniaxial compression performance decay law of crack repaired composite structure at high temperature.The results indicate that with the increase of temperature,the uniaxial compression performance of the crack repaired composite structure becomes worse and the damage rate gradually increases.The uniaxial compression performance of vertical crack repaired composite structure is better than V-crack repairedcomposite structure,and the repaired effect of epoxy resin adhesive on two kinds of cracks is better than that of EA/PU IPN.

关 键 词：沥青混凝土 高温 裂缝 修补组合结构 抗压性能 

分 类 号：TU528.42[建筑科学—建筑技术科学]