以原状膨胀土以及压实度为90，93和96重塑膨胀土和石灰改性膨胀土为实验对象，对土样进行了6次干湿循环，并开展了收缩试验，研究结果表明：掺灰对于抑制膨胀土的收缩作用显著，对于工程应用意义重大，但掺灰对于缩限的改变并不明显。%Taking undisturbed expansive soil,remolded concrete and improved expensive soil with lime whose compactions are 90,93,and 96, as the experiment objects,the paper undertakes the shrinkage tests and 6 dry-wet cycles of the soil samples,and proves by the research results that the lime mixture has obvious role of restraining the shrinkage of the expansive soil,so it is meaningful for its engineering application,though it has unobvious change for the shrinkage limit.
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