改性环氧树脂薄层在道路抗滑养护中的应用研究

Research on the ApplicationofModified Epoxy Resin Thin Layer in Road Anti-skid Curing

为解决现有高速公路路面抗滑性能下降问题,研发了改性环氧树脂薄层铺装材料,并对施工项目的黏结强度、摩擦系数、构造深度及交通事故统计进行5年的跟踪研究。结果表明,其黏结强度呈“先下降后稳定”的趋势,最终稳定在1.10 MPa左右,且破坏形式均为混凝土破坏;通车5年后,改性环氧树脂薄层罩面的构造深度稳定在1.00 mm左右,干燥和潮湿状态下摆值分别在70,60左右,仍然满足摩擦系数在潮湿状态大于45的要求。此外,采用改性环氧树脂薄层改造后的隧道,路面抗滑性能得到明显提高,交通事故率明显下降。

With the rapid development of expressway in China,the number of traffic safety accidents increases year by year.In order to solve the problem of declining anti-skid performance of existing pavement,modified epoxy resin thin layer pavement materials are independently developed.In addition,5 years of tracking research is conducted on the bonding strength,friction coefficient,structure depth and traffic accident statistics of construction projects.The results show that the bond strength tends to decrease first and then stabilize,and finally stabilizes around 1.10 MPa,and the failure forms are concrete failure.After 5 years'operation,the structure depth of the modified epoxy resin thin coating surface is stable at about 1.00 mm,and the pendulum value of the dry and wet state is around 70 and 60 respectively,and the friction coefficient meets the requirement,which is still greater than 45 in the wet state.In addition,the tunnel modified with thin layer of modified epoxy resin has significantly improved the skid resistance of the road surface and reduced the traffic accident rate,which provides a safety guarantee for traffic safety.