大厚度水泥稳定碎石基层压实特性研究

Research of Large thickness Cement Stabilized Macadam Compaction Properties

采用振动压实成型法和重型击实法研究了水稳碎石的压实和力学特性;同时结合通平高速公路对现场压实特性特性进行研究。研究发现,振动压实确定的最大干密度和无侧限抗压强度较重型击实有较大幅度的提高,可提高路面的承载能力;最佳含水量和水泥剂量稍小,可有效防止反射裂缝。同时还发现,大厚度基层的压实度能够满足规范要求,说明大厚度水稳碎石基层技术在节省工期,提高质量和节约成本方面有独特的优势。

Vibratory compaction molding method and heavy compaction method were used to study compaction characteristics and mechanical properties of cement stabilized macadam.Field compaction characteristic was research combined with the Tong-ping highway.The results show that,vibrating compaction of det;optimum water content and cement dosage is smaller,which can effectively prevent the reflection crack.At the same time,large thickness of base compaction can meet the specification,large thickness of water stabilized gravel base technology has unique advantages in saving the construction period,improving quality and saving cost.