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通过对国内、外使用年限50年以上的水泥混凝土路面的结构与材料的深入调研,提出我国长寿命水泥混凝土路面结构优化措施:建议我国各级公路水泥混凝土路面(底)基层与路床之间必须全线设置足以缓冲差异沉降的粒料垫层;在特重交通的运煤专线公路,水泥混凝土路面板底与贫混凝土刚性上基层之间应设置缓冲温差翘曲柔性垫层;在重交通水泥混凝土路面板底与半刚性基层之间应设置防冲刷封层。
Through in-depth investigation of the structure and materials of cement concrete pavement with service life of more than 50 years both at home and abroad, the optimization measures of long-lived cement concrete pavement structure in our country are proposed. It is suggested that the cement concrete pavement (bottom) It is necessary to set up a cushion of sufficient thickness to cushion the differential sedimentation across the whole line; flexible cushion with warp temperature difference should be set up between the special heavy traffic coal-fired highways, cement concrete pavement bottom and lean concrete rigid upper base; Between the bottom of concrete pavement and semi-rigid base should be set anti-erosion seal layer.