级配类型对水泥稳定碎石路用性能的影响研究

Study on Influence of Grading Type of Cement Stabilized Gravel on Pavement Performance

通过不同龄期的无侧限抗压强度、劈裂强度、抗压回弹模量及温缩等试验,研究了3种典型级配类型对水泥稳定碎石路用性能的影响。结果表明:骨架结构对早期强度起主要作用,结构密实性对后期强度影响较大;骨架结构越好,抗变形能力越强,长期抗压回弹模量越大;填料含量越多,温缩系数大,填料含量少,则温缩系数小。

Through test on unconfined compressive strength, splitting strength, compression resilience modulus and temperature contraction at different ages, this paper studies the influence of 3 typical graded cement stabilized gravel on pavement performance. The result indicates that framework structure has a major effect in early strength ; structure compaction has greater influence on later strength ; better framework structure will lead to stronger deformation resistance and greater long-term compression resilience modules; more filling content will lead to greater temperature contraction coefficient, less filling content will lead to smaller temperature contraction coefficient.