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针对深圳滨海相吹填土,采用水泥、石灰、粉煤灰等固化材料,在不同的掺入条件下进行了三轴直剪试验,对比分析了在不同的含水率和掺入配比情况下吹填土被固化材料加固后的强度发展变化情况。试验结果表明,采用单一水泥作为固化材料时,固化吹填土强度随水泥掺量增加成正比例变化;采用水泥、石灰两种固化材料时,相对经济的固化强度存在一个最佳配合比;当水泥、石灰、粉煤灰三种固化材料综合作用时,龄期对低含水率土样的固化效果影响较大。
Aiming at Shenzhen Binhai phase sediment filling, three-axis direct shear tests were carried out under different mixing conditions using solidified materials such as cement, lime and fly ash. The effects of different moisture content and blending ratio Dust filling is hardened material after the strength of the development and changes. The experimental results show that the strength of cement dredging fill varies proportionally with the increase of cement content when single cement is used as the curing material. When cement and lime are used as the curing materials, the relative economic curing strength has the best ratio. When cement , Lime, fly ash three kinds of curing materials, the age effect on the curing effect of soil samples with low water content.