Research on Uniaxial Consolidation Test of the Typical Reticulate Red Clay Around Dongting Lake Area

To research the uniaxial consolidation property of the typical reticulate red clay around Dongting lake area, uniaxial consolidation tests were performed on the undisturbed and disturbed sample under different vertical pressure. By analyzing the laboratory results, the authors drew following conclusions: the compressibility of undisturbed sample is much more insignificant than that of disturbed sample;in secondary consolidation stage, the creep curves of undisturbed sample is rough, and the undisturbed sample has no obvious steady creep stage, while the creep curves of disturbed sample are smooth and there is obvious steady creep stage in disturbed sample;the undisturbed sample comes to the end of creep deformation much earlier. The authors also found that uniaxial consolidation of unsaturated reticulate red clay has the linear rule, and the authors deduced a empirical equation of uniaxial consolidation, a parameter in this equation can help us forecast the ultimate settling amount of reticulate red clay.