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

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.