摘要
超薄罩面养护技术应用日益广泛,为了研究高弹改性沥青在其应用中的性能稳定状况,通过选用三种高弹改性沥青,基于微观表征研究了各改性沥青在高温状态下的离析状况。采用热台显微镜研究高弹改性沥青的微观结构,采用差式扫描量法热研究高弹改性沥青的热行为,采用动态热机械分析对高弹改性沥青低温性能进行了分析。试验结果表明,三种高弹改性沥青在长时间高温状态下均会有一定程度离析,其中GX型高弹改性沥青微观结构、吸收热及玻璃化转变温度差异较大,其他两种均较小,总体来说,离析对高弹改性沥青的性能影响较弱。
The application of ultra-thin cover curing technology is increasingly widespread.In order to study the performance stability of high-elastic modified asphalt in its application,three kinds of high-elastic modified asphalt were selected,and the performance of each modified asphalt at high temperature was studied based on microscopic characterization.Segregated condition.The microstructure of the high-elastic modified asphalt was studied by hot stage microscope,the thermal behavior of the high-elastic modified asphalt was thermally studied by differential scanning calorimetry,and the low-temperature performance of the high-elastic modified asphalt was analyzed by dynamic thermomechanical analysis.The test results show that the three types of high-elasticity modified asphalt will segregate to a certain extent under long-term high temperature conditions.Among them,the GX type high-elasticity modified asphalt has a large difference in microstructure,heat absorption and glass transition temperature,and the other two are all different.In general,the effect of segregation on the performance of high elastic modified asphalt is weak.
作者
冼振光
马乃富
李凯
XIAN Zhen-guang;MA Nai-fu;LI Kai(Guangxi Xinping Expressway Co.,Ltd.,Nanning 530000,China;Chongqing Zhixiang Paving Technology Engineering Co.,Ltd.,Chongqing 400067,China)
出处
《价值工程》
2023年第23期153-155,共3页
Value Engineering
关键词
超薄罩面
高弹改性沥青
高温稳定性
微观特性
ultra-thin finish
highly elastic modified asphalt
high temperature stability
microscopic properties
作者简介
冼振光(1970-),男,广西北流人,高级工程师,主要从事高速公路、桥隧、路基路面建设与养护。
