旧砼路面板上沥青加铺层直道试验研究

摘要

对不同结构方案下的旧水泥混凝土路面板上沥青混凝土加铺层结构进行直道试验,分析研究了不同轴重及荷载次数作用下的接缝弯沉差、车辙变形以及路面的疲劳特性,并对比了沥青加铺材料及结构优劣性.结果表明,在不同轴载的反复作用下,所研究的新型沥青混凝土材料在接缝路表弯沉、车辙变形量和路面结构的抗剪切疲劳特性等方面都优于普通的AC-20沥青混凝土.%The line-track test was taken for different structures of asphalt concrete overlay on old cement concrete pavement. The deflection difference on both sides of joint, rutting depth and fatigue characteristics of the overlay were analyzed under different axle loads and loading times. The advantages and disadvantages of asphalt concrete materials and structures were compared. The results showed that there were certain advantages of the new asphalt concrete suggested in the deflection of pavement surface on joint, rutting depth and pavement anti-shear fatigue characteristics compared to the normal AC-20 asphalt concrete under different axle loads repeating.