Change rule of water content of dredged clays by adding cement and quick lime.

The variation of sludge water content treated with cement and quick lime was studied by experimental ratio tests. Results show that water content appears a gradual decrease with the increase of lime ratio. On the conditions of same water content and lime ratio, the effect of cement reduced the sludge water content is better than quick lime. The effect of initial water content on the quick lime is more than that of cement, the higher the initial water content, the closer the treatment effect of quick lime got to cement. Water content of cement treated soil decreased with curving time, and the decrease rate of the water content is gradually slow after three days. When lime ratio was equal to or greater than 7 %, the curving time makes greater impact on curing effect. When the cement and quick lime were mixed to dredge clays, with the decrease of cement and increase of quick lime, the water content decrease ratio of the treated soils decreased after the first increase. Meanwhile, on the condition of maximum ratio of cement or quick lime, as well as 1 were the best ratios that got better treatment effect. [ABSTRACT FROM AUTHOR]