水泥稳定碎石静态模量与动态模量比较

Comparison of Compressive Resilient Modulus and Dynamic Modulus of Cement-Stabilized Macadam

摘要:

分析了静态模量和动态模量的定义及试验方法,并采用MTS(材料试验机)对3种水泥用量的水泥稳定碎石进行了不同荷载级位下的静态模量和动态模量试验.结果表明,动态模量试验方法更符合路面实际受力状况;水泥稳定碎石不是纯粹的弹性材料,其动态模量随水泥用量的增加而显著增加;静态模量和动态模量均随荷载的增加而增加;相同荷载级位下,水泥稳定碎石的动态模量比静态模量大,两者的比值约为1.2～1.6.

Abstract:

The definition and testing methods of compressive resilient modulus and dynamic modulus were analysed.Compressive resilient modulus and dynamic modulus tests were conducted at various loads for cement-stabilized macadam with three kinds of cement content through MTS.The results show that the testing method of dynamic modulus is closer to actual stress condition of pavement.Cement-stabilized macadam is not sheer elastic material.With the increase of cement content,the dynamic modulus increases.With the incre...