Compacted layers of expansive soils are used in different engineering projects,such as subgrades,engineered clay barrier......

用微观分析和土工试验研究了含Ｎ的有机阳离子化合物以改善膨胀土性质的影响。研究结果表明，土体亲水性改变和强度提高都与该化合物能......