Test and Application of Cement Stabilized Sand as Subgrade Filler
In order to improve the performance of sand roadbed,this paper studies the influence of cement content on the physical and mechanical properties of cement stabilized sand,and verifies the effectiveness of cement stabilized sand combined with solid engineering.The results show that the unmeasured compressive strength of cement stabilized soil increases gradually with the increase of cement content in all conditions,and the unmeasured compressive strength of cement stabilized soil in the early curing period is lower than that in the 28 d curing period.With the increase of cement content,the CBR of cement stabilized soil increases slowly at the initial stage,then increases rapidly,and then tends to be stable again.The optimum cement content is 4.5%,the compactness and bending of the solid engineering meet the specifications and design requirements,and the subgrade has excellent strength and good construction effect.
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