Present invention relates to method of reducing swelling of expansive soils of expansive soils by granular pile technique. Besides initial moisture content. Wi, the spacing between the piles (expressed by s/d ratio; s = spacing between the piles and d = diameter of a pile) and the relative density of granular pile forming material were the variables of the study. Three initial moisture content 15%, 17% and 20%, three s/d ratio values 2, 3, and 4 and two relative densities of the sand (Dr) 50% and 70% were selected. Granular piles of different diameters were installed in prepared clay beds in model cylindrical moulds. Reduction in swelling of expansive soils due to installation of pile, depends on Wi, s/d ratio and the relative density (Dr) of the granular pile material.
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机译：本发明涉及通过粒状桩技术减少膨胀土膨胀土的方法。除了最初的水分含量。 W i ，桩之间的间距（以 s / d 比率表示; s =桩之间的间距， d =桩的直径）和粒状桩形成材料的相对密度是研究的变量。三种初始水分含量分别为15％，17％和20％，三种 s / d 比率值2、3和4，以及两种相对密度的沙子（ D r ）分别选择了50％和70％。将不同直径的粒状桩安装在模型圆柱模具中的准备好的粘土床中。由于安装桩而减少膨胀土的膨胀，取决于 W i ，s / d 比率和粒状堆料的相对密度（ D r ）。
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