水泥粉煤灰稳定碎石基层的龄期和强度

以水泥粉煤灰稳定碎石混合料的设计龄期和设计参数为研究对象,通过试验不同龄期的力学特性指标发现,120d龄期时混合料的强度发展已经基本完成,因此认定混合料的设计龄期宜为120d。在此基础上,通过变化集料级配和水泥剂量,研究确定出混合料7d龄期的抗压强度标准,120d龄期劈裂强度和抗压回弹模量的合理区间。

Study of the Design Parameter of Cement and Flyash Stabilized Crushed-stones

This paper studied cement and flyash stabilized crushedstone's design age and design parameter.The results indicate that the mixture strength's development comes basically to an end in 120 days,so the mixture's design age is determined as 120 days.Through varying aggregate gradation and cement content,this paper also studied the mixture 7d (age's) compressive strength standard,120d (age's )cleavage strength and resilience modulus,then provides these parameters' reasonable limits.