针对旧水泥混凝土路面加铺沥青混凝土面层出现反射裂缝这一问题,提出了采用开级配沥青碎石作为裂缝缓解层的方法。以实体工程为依托,对开级配沥青碎石的配合比设计、路用性能、施工工艺作了探讨,为开级配沥青碎石作为裂缝缓解层的应用提供了参考。 Aiming at the problem of reflecting cracks on asphalt concrete pavement of old cement concrete pavement, a method of using open graded asphalt pavement as crack mitigation layer is put forward. Relying on the physical engineering, this paper discusses the mix design, road performance and construction technology of open graded asphalt pavement, and provides a reference for the application of open graded asphalt pavement as the crack mitigation layer.