复合添加剂在水泥土搅拌法中的应用

Use of Complex Additive in Deep Mixing Method

在水泥土搅拌法试验段的基础上,通过对掺入SN-Ⅱ高效减水剂、氢氧化铝和氯化钙早强剂以及不加添加剂的水泥土进行7d、28d和90d龄期的无侧限抗压强度试验,研究复合添加剂对水泥土力学性能的改善作用。结果表明,复合添加剂对水泥土早期、中期、后期强度的提高均有明显效果。

Based on the experimental section, the effect on cement stabilized soil of complexadditive, including agent SN-Ⅱ, early strength agent Al（OH）3 and CaCl2, was studied through unconfined compression test at age of 7d, 28d, 90d. The result demonstrates that complex additive can evidently increase the strength of cement-stabilized soil at early, middle and late stages.