【摘要】 反射裂缝是旧水泥混凝土路面上沥青混凝土加铺层的主要病害之一,针对这一问题,提出了采用开级配大粒径混合料抗反射裂缝的方法。通过有限元分析,大粒径混合料多空隙结构能减小接缝处由交通荷载及环境温度变化所产生的应力,说明大粒径混合料用于防治反射裂缝是可行的。并介绍了大粒径沥青混合料的级配范围与施工工艺,以便推广大粒径混合料的应用。更多还原

【Abstract】 Reflected crack is one of the most diseases of asphalt overlay laid on the worn concrete.By the finite element method analyzing,a great deal of void in the large-size asphalt macadam can reduce or absorb the stress and strain of vehicle load and the environmental temperature variety of asphalt overlay at joint of cement concrete pavement,illuminating that using the LSM to prevent the reflected crack is feasible.We introduced the construction technique in order to popularize the application of LSM.更多还原