水泥稳定砂砾击实特性与击实方法  

Compaction Properties and Method of Cement Stabilized Sand Gravel

作　　者：陈亮亮[1] 赵银[1] 冯德成[1] 

机构地区：[1]哈尔滨工业大学交通科学与工程学院,哈尔滨市150090

出　　处：《公路》2011年第12期147-151,共5页Highway

摘　　要：使用水泥稳定砂砾作为半刚性基层,具有稳定性高,经济性好的特点。水泥稳定砂砾材料的最大干密度与最佳含水量的确定使用的是与黏土相同原理的击实方法。由于砂砾材料中细颗粒少,透水性强,因此不具备黏土材料的击实特性,采用重型击实的方法往往得不到凸型的击实曲线。分析了砂砾材料的击实特性,在假设水泥浆能够填充混合材料当中任意小孔隙的前提下,建立了有效可行的砂砾饱水振动+水泥填充修正的击实方法。The cement stabilized sand gravel is of high stability and economy. The compaction method in JTG E51-2009 for cement stabilized sand gravel is nearly the same with that for soils. For the lack of fine particles in sand gravel and the water permeability, the compaction properties is different from soils and it is diffcult to get the similar compaction curves like clay with modified proctor compaction test. The compaction property is investigated in this paper. Under the assumption that the cement slurry can fill any voids in the mixture, the compaction method ＂Saturated Sand Gravel Compaction＂＋＂Cement Filling Correction＂ is established.

关 键 词：水泥稳定砂砾 振动击实 毛细水压力 半刚性基层 

分 类 号：U414.101[交通运输工程—道路与铁道工程]