水泥稳定碎石基层路面裂缝的防治研究

Research on Prevention of Crack on Cement Stabilized Macadam Base Pavement

从水泥稳定碎石基层的开裂成因入手,论述了其裂缝种类与成因,包括混合料内预存裂缝、载荷型裂缝和温、干缩裂缝,并描述了其抗裂性能的物理与力学评价指标,以无侧限抗压强度、极限弯拉应变和温、干缩抗裂系数三项指标组成了较为全面的评价体系;最后归纳总结了水泥稳定碎石基层开裂的防治措施。

Starting from reasons for the crack on cement stabilized macadam base, the types and reasons for the crack are discussed, includingcrack prestored in mixture, crack of load, temperature shrinkage crack and dry shrinkage crack, the evaluation indexes of physics and mechanics of its anti - cracking ability are described, and a comprehensive evaluation systemis formed by three indexes like unconfined compressive strength, ultimate flexural strain andanti - cracking - coefficients of temperature shrinkage and dry shrinkage, and the prevention measures for the crack on cement stabilized macadam base are summarizedat last.