高含水率碱渣的强度特性试验研究

目前碱渣大量的用于填筑工程,碱渣的强度特性是分析碱渣地基沉降变形的关键。以不同条件的碱渣三轴试验为基础,研究了碱渣的强度变形特性,并且分析了碱渣强度产生的机理。结果表明:碱渣的强度随着含水率、干密度及龄期的变化而变化,碱渣抗剪强度的最大值不在最优含水率处,这与一般土不同。碱渣强度最大时,黏聚力起主要作用。

Experimental study on strength characteristics of soda residue with high water content

At present,the soda residue hasbeen widely used in landfill,and the strength characteristics are crucial to the analysis of the settlement and deformation of the soda foundation.The strength-deformation characteristic of the soda residue and the mechanism of the strength were studied and analyzed on the basis of triaxial test data of residue under different conditions.The conclusion was that the variation of shearing resistance agreed with the change of moisture content,density and age,and the maximum shearing resistance was not correlated with the optimal moisture content.It was different from the common soil.The cohesion would play a key role when the strength of soda residue was the maximum.