水泥石灰稳定粉砂土路基的应用研究

Study on the Application of Silt Subgrade Treatment by Cement-Lime Improved Soil

通过室内试验对水泥石灰稳定粉砂土的无侧限抗压强度、回弹模量等性能进行研究。研究结果表明:在相同水泥与石灰比下,随着水泥石灰掺入总量的增加,水泥石灰稳定粉砂土的无侧限抗压强度逐渐增加;水泥与石灰的最佳掺入比为1∶3,水泥最佳掺入量为3%。工程实例表明:水泥石灰的掺入能够有效地控制粉砂土路基的沉降,增加路基的抗压强度。

In this paper,the unconfined compressive strength and resilient modulus of cement- lime stabilized silt sand are studied by laboratory test. Research shows that： under the same cement and lime ratio,with the increase of the total amount of cement- lime,the unconfined compressive strength of cement stabilized silt sand is gradually increased; the best mixing ratio of cement and lime is 1： 3,the best mixing amount is 3%. The engineering example shows that： the mixing of cement- lime can effectively control the settlement of silt subgrade and increase the compressive strength of subgrade.