粉煤灰对水泥稳定碎石路用性能影响

Influence of fly-ash on the performance of cement stabilized aggregate

为了改善水泥稳定碎石的抗裂性能,在水泥稳定碎石材料中按等量取代法掺入粉煤灰,研究了掺不同剂量粉煤灰量的水泥稳定碎石基层的路用性能,并利用扫描电子显微镜对掺粉煤灰的水泥稳定碎石的路用性能形成机理进行了分析。室内试验结果表明,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,尤其是具有良好抗裂性能。

Considering that cement stabilized aggregate has the defect in the aspects of crack resistance, experiments on cement stabilized aggregate mixed 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, especially anti-cracking performance. Finally, the mechanism study on the road performance of cement-flyash stabilized aggregate is conducted with EMS.