掺固化剂粉煤灰粉砂土路用性能研究

摘要

Aiming at yellow flood plain silt,the test of the compressive strength,splitting strength test and modulus of resilience test are respectively conducted to study the impact of curing agent and fly ash on the properties of silt soil.The results show that the 7d unconfined compressive strength is 1.35MPa,which is greater than the high grade highway standard value of 0.6MPa,and the splitting strength and modulus of resilience is higher than that of lime-ash stabilized soil,which has good growth performance.The engineering example shows that the performance evaluation of the road is good.%针对黄泛平原区粉土地质情况，分别就无侧限抗压强度试验、劈裂强度试验和回弹模量试验研究了固化剂粉煤灰对粉砂土性能的影响。结果表明，固化剂粉煤灰稳定土7d的无侧限抗压强度达到了1．35 MPa，大于高等级公路底基层规范值0．6 MPa，劈裂强度以及回弹模量值均高于二灰稳定土，有着良好的成长性能；现场工程应用实例表明，道路性能各项指标评价良好。