水泥粉煤灰稳定碎石基层路用性能研究

基于水泥稳定碎石抗裂性能不足，利用粉煤灰的填充作用和火山灰效应，按水泥稳定碎石基层中水泥剂量的30％、40％、50％、60％和70％等量替代水泥的方法成型了大量水泥粉煤灰稳定碎石基层的试件，并进行路用性能试验研究。结果表明，粉煤灰按30％等量取代的水泥稳定碎石基层具有良好的路用性能，尤其是抗裂性能。最后利用扫描电子显微镜对水泥粉煤灰碎石的路用性能形成机理进行了分析。

A Study on Performance of Cement-Flyash Stabilized Aggregate

Considering that cement stabilized aggregate exists the shortage of crack resistance in aspects, cement stabilized aggregate mixed with different dosage of fly-ash are conducted in a laboratory. The test results show that cement stabilized aggregate containing 30% dosage of fly-ash has better road performance, especial anti-cracking performance. Finally, the mechanism study on the road performance of cement-flyash stabilized aggregate are conducted by using EMS.