应力吸收层防治沥青混凝土加铺层反射裂缝机理分析及应用

Mechanism Analysis and Application of Preventing Asphalt Concrete Layer Reflective Crack by Stress Absorbing Layer

通过对旧水泥混凝土路面沥青混凝土加铺层反射裂缝形成机理分析,在旧水泥混凝土路面与沥青混凝土加铺层之间设置了薄沥青混凝土应力吸收层。经工程实例应用,设置应力吸收层的沥青混凝土加铺层,在温度及荷载周期性反复作用下具有较强的抗反射裂缝能力,为旧水泥混凝土路面改造工程提供参考。

Laying the asphalt concrete stress absorbing layer between old cement concrete pavement and asphalt concrete layer has been applied in real project cases. According to the mechanism analysis of formation of asphalt concrete layer reflective crack in old cement concrete pavement, asphalt concrete layer with stress absorbing layer has a strong ability of preventing reflective cracks under the repeated periodic function of temperature and load, which provides a valuable reference for the reconstruction of old cement concrete pavement.