后掺法环氧沥青混合料施工工艺研究及应用

Research and Application of Post-doping Method Used for Epoxy Asphalt Mixture

为解决环氧沥青混合料可容许施工时间短的难题,降低因其引发的质量风险,系统研究了现行环氧沥青混合料施工工艺各环节,提出将环氧沥青B组分、A组分分别在拌合站及摊铺过程中添加的后掺法施工工艺。在室内模拟后掺法工艺制备混合料试件,进行路用性能及长期使用性能试验研究;联合某机械厂家研发了专用摊铺机,通过实体工程对后掺A组分均匀性及准确性进行检验,工后检测路面各项性能指标。结果表明:采用后掺法制备的环氧沥青混合料具备较好的路用性能及长期使用性能;摊铺过程中A组分添加计量准确、分散均匀性良好,工后路面各项性能指标检测良好。证明该工艺可行,为环氧沥青混合料施工提供了一种工艺选择。

In order to reduce the quality risk of epoxy asphalt mixture due to the construction retention time,solve the problem of short allowable construction time,each links of the current construction technology were systematically studied,then the post-doping method which add component B and component A in the asphalt mixing plant and paving process respectively is put forward.Epoxy asphalt mixture specimens were prepared by simulating the post-doping method in the laboratory,and its road performance and long-term performance were tested.The application effect of post-doping method is verified from two aspects in engineering,including the uniformity and accuracy of component A addition and the paving quality.The result show that the road performance and long-term performance of epoxy asphalt mixture prepared by post-doping method is excellent.During the paving process,the component A was added accurately and the dispersion uniformity is well,the paving effect is well.The research proved that the post-doping method is feasible and provide an alternative process for the construction of epoxy asphalt mixture.