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在山西省由北向南选取典型路基土样做颗分、不同含水率和不同压实度回弹模量试验,分析了含水率、压实度、黏粒含量对回弹模量的影响。结果表明:含水率、压实度对路基土回弹模量的影响很大,对于细粒土来说,黏粒含量也是影响回弹模量的主要因素之一,黏粒含量越多路基土回弹模量值越大。山西省典型路基土样在最佳含水率、100%压实度情况下的回弹模量值由北向南逐渐增加,山西省晋北地区细粒土黏粒含量范围为0%~10%,最佳含水率最大密实度状态下回弹模量值约为40~60MPa;晋南地区细粒土黏粒含量范围为10%~30%,回弹模量值约为80~100MPa。
In Shanxi Province, from the north to the south, the typical subgrade soil samples were selected for the tests of different moisture content and different compaction degrees to study the influence of water content, compaction degree and clay content on the elastic modulus. The results show that the moisture content and compaction degree have a great influence on the elastic modulus of subgrade soil. For fine-grained soils, the clay content is also one of the main factors affecting the elastic modulus. The more the clay content is, The greater the rebound modulus value. The springback modulus of typical subgrade soil samples in Shanxi Province increased gradually from north to south under the condition of the best water content and 100% compaction degree. The content of fine clay in Shanxi Jinbei area ranged from 0% to 10% The maximum value of moisture content in the state of maximum resilience modulus of about 40 ~ 60MPa; Jinnan fine clay soil particle size range of 10% to 30%, the modulus of resilience of about 80 ~ 100MPa.