水泥稳定碎石层间状态对沥青路面影响分析

ANALYSIS OF INFLUENCE OF CEMENT STABILIZED MACADAM INTERLAYER BONDING STATE ON MECHANICAL RESPONSE OF ASPHALT PAVEMENT

为了明确水泥稳定碎石层间结合状态对沥青路面力学响应影响,通过在水泥和碎石层间洒水或涂抹水泥浆液的方法制备了不同结合状态的水泥稳定碎石基层,分别模拟连续、半连续和滑动状态的层间结合状态,分别测试了不同状态试件的无侧限抗压强度、劈裂强度和抗压回弹模量。结果表明,连续状态基层的3种力学参数均高于半连续状态和滑动状态的力学参数,结合状态对基层的力学响应具有重要影响,连续状态的水泥稳定碎石基层的力学响应能力最佳。

In order to clarify the influence of cement-stabilized macadam interlayer binding state on the mechanical response of asphalt pavement,cement-stabilized macadam base with different binding state was prepared by sprinkling water or daubing cement grout between cement and macadam.The interlayer binding state of continuous,semi-continuous and sliding state was simulated respectively.The unconfined compressive strength,splitting strength and compressive springback modulus of specimens in different states were measured respectively.The results show that the three mechanical parameters of the continuous state base are higher than those of the semicontinuous state and sliding state.The combined state has an important influence on the mechanical response of the base,and the mechanical response of the continuous state cement stabilized macaggregates base is the best.