【摘要】 为模拟基层材料的现场振动压实效果，文章提出室内分级振动试验方法，研究了骨架密实型水泥稳定级配碎石的不同击实特性，对比评价了不同方式成型试件的力学性能、抗冲刷性能和抗裂性能。试验结果表明：分级振动法的最大干密度和压实度较连续振动法大，最佳含水率相差较小；与静压法相比，分级振动法成型试件的7d无侧限抗压强度、28d劈裂强度大幅提高，分别提高50%、20%以上，90d抗压回弹模量提高6.9%～13.8%，冲刷质量损失减少0.09%以上，平均干缩系数和平均温缩系数分别减少17.9%、24.8%；与连续振动法相比，分级振动法成型试件的7d无侧限抗压强度提高7.4%～12.5%,28d劈裂强度、90d抗压回弹模量、抗冲刷性能和抗收缩开裂性能有所改善。更多还原

【Abstract】 In order to simulate the on-site vibration compaction effect of the base material, an indoor graded vibration method was proposed to study the different compaction characteristics of the skeleton compacted cement stabilized graded gravel. The mechanical properties, anti-erosion properties and anti-crack properties of the specimens formed in different ways were compared and evaluated. The test results show that the maximum dry density and compactness of the graded vibration method are larger than those of the continuous vibration method, and the difference of the optimum moisture content between the two methods is small. Compared with the static compression method, the unconfined compressive strength at 7d and splitting strength at 28d of the specimens formed by the graded vibration method are significantly increased by more than 50% and 20% respectively. The compressive rebound modulus at 90d is increased by 6.9%～13.8%, and the erosion mass loss is decreased by 0.09%. The average dry shrinkage coefficient and average temperature shrinkage coefficient decreased by 17.9% and 24.8%, respectively. Compared with the continuous vibration method, the unconfined compressive strength of the specimens formed by the graded vibration method is increased by 7.4%～12.5%at 7d, and there are no differences in splitting strength at 28d, compressive rebound modulus at 90d, anti-erosion properties and anti-crack properties.更多还原