深圳滨海相吹填土固化的试验研究

Research on solidifying dredger fill of littoral facies with experiment

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。

Based on the triaxial test experiment, it is analyzed on the strength of the Shenzhen littoral facies dredger fill after solidifying with different hardener such as cement and lime and in different mixing ratio and water content. It shows that single cement as the solidification material, solidified dredger fill strength increases proportional to changes of cement content; nevertheless, cement and lime are effective for hardening dredger fill with proper mixing ration and when the three hardners are at work, the age plays a major role for low moisture content soil.