水泥粉煤灰稳定碎石基层的耐久性

为了研究水泥粉煤灰稳定碎石的路用性能,将粉煤灰当成细集料考虑,采用不同的配合比制备试件,对其抗冲刷性能、疲劳性能和抗冻性能进行了分析、研究结果表明:粉煤灰掺量不宜过多,尽量不超过10%;当粉煤灰掺量为10%时,冻融前强度比较高,但是冻融后强度损失较大;考虑抗冲刷性能和抗冻性能,水泥掺量不宜小于5%

Durability of Cement and Fly Ash Stabilized Macadam Base

In order to analyze the road performance of cement and fly ash stabilized macadam,the fly ash was considered to be the fine aggregate,and the specimens with different ratios were prepared.The scour resistance, fatigue resistance and frost resistance performance were analyzed.The results show that：the content of fly ash should not exceed 10%;when the fly ash content reaches 10%,the strength before freezing and thawing is high,but the strength loss after freezing and thawing is larger;considering scour resistance and freezethaw resistance,dosage of cement admixture should not be less than 5%.