碎石化旧水泥混凝土路面加铺沥青层技术研究

摘要

Based on Yiyang-Changde freeway pavement reconstruction project,the comparison of the surface deflections and the tensile stresses for different asphalt overlay structures on the rubblized Portland Concrete Cement (PCC)pavement by means of Multi-Head Breaker(MHB),Resonant Pave-ment Breaker(RPB)and broken-seated techniques shows that the RPB is better than the MHB.%以长张高速公路益常段旧水泥混凝土路面改造工程为依托，简述旧水泥混凝土路面碎石化技术；通过建立计算模型，比较共振碎石化、多锤头碎石化及冲击破裂稳固3种破碎（破裂）情况下加铺沥青层结构的加铺层层底拉应力及相对弯沉比情况，表明共振破碎后原路基整体强度优于多锤头碎石化技术。