粉煤灰碎石作路面基层疲劳性能试验分析

Test and Analysis of the Fatigue Performance for the Primary Level of Pavementfrom the Flyash-gravel

为了研究粉煤灰碎石材料的疲劳性能.分别对石灰粉煤灰碎石、水泥粉煤灰碎石、水泥稳定碎石材料进行疲劳试验。结果表明,石灰粉煤灰碎石的抗疲劳性能最好,其次是水泥粉煤灰,水泥稳定碎石抗疲劳性能较差。在施工中,建议在满足强度的情况下,尽量使用石灰粉煤灰碎石。

In order to investigate the fatigue performance of flyash -gravel, we conduct the fatigue test respectively with the lime -flyash - gravel, cement - flyash - gravel and cement stabilized gravel. As the result shows that ,the best fatigue strength is of lime - flyash gravel, followed by cement - flyash - gravel.. The cement stabilized gravel gives the poor performance. The paper suggests that, in construction, it is important to use lime - flyash - gravel as far as possible if the strength requirement is satisfied.