水泥粉煤灰稳定碎石结合料填充系数的优选  

Optimization of Binder Filling Coefficient of Cement-Fly Ash Stabilized Crushed Stones

作　　者：周明凯[1] 陈潇[1] 刘佳[1] 范志勇[1] 吴兵兵[1] 

机构地区：[1]武汉理工大学硅酸盐材料工程中心教育部重点实验室,湖北武汉430070

出　　处：《建筑材料学报》2009年第1期57-62,共6页Journal of Building Materials

基　　金：西部交通建设项目(200631800042)

摘　　要：研究了不同集料级配下，不同结合料填充系数对水泥粉煤灰稳定碎石无侧限抗压强度、劈裂强度、回弹模量、干缩应变以及干缩能抗裂指数的影响．据此，优选出了水泥粉煤灰稳定碎石结合料填充系数的适宜范围（1.0～1.2）．该范围随集料级配变化的波动性较小，具有较强的普适性．Research results of cement-fly ash stabilized crushed stone prepared with different binder filling coefficients and different aggregates gradations were presented. The unconfined compressive strength and splitting strength, modulus of elasticity, dry shrinkage strain as well as dry shrinkage energy anti-cracking coefficient were determined. Hereby, it is put forward that the suitable hinder filling coefficient in cementfly ash stabilized crushed stone is between 1.0 and 1.2, having a good generalization to different gradations.

关 键 词：水泥粉煤灰稳定碎石 结合料填充系数 级配 力学性能 抗裂 

分 类 号：U414.1[交通运输工程—道路与铁道工程]