水泥稳定碎石设计参数研究

Research of Design Parameters of Cement-Stabilized Macadam

基于重载交通和现代测试技术的发展,采用材料试验机(MTS)环向引伸仪法实测了水泥稳定碎石的回弹模量和泊松比,并用BISAR程序计算了回弹模量和泊松比的变化对给定路面结构剪应力和拉应力的影响规律.结果表明:水泥稳定碎石的回弹模量和泊松比均随荷载的增加而增加;水泥稳定碎石回弹模量和泊松比的变化对路面结构剪应力和拉应力的影响不明显;超载对路面结构剪应力和拉应力的不利影响显著.

Based on heavy traffic and modern testing technology development, the resilient modulus and Poisson ratio were measured through material test system（MTS） circumferential extensometer measurement. The impact of change of resilient modulus and Poisson ratio on tensile stress and shear stress of a given pavement structure was calculated through BISAR programme. The results show that the resilient modulus and Poisson ratio of cement-stabilized macadam increase with load, but the change of two design parameters has insignificant impact on tensile stress and shear stress. However, overloading has significant adverse impact on the stresses.