Comparison Study on Expansive Soil and Red Clay Creep Model

A series of compression creep and unloading tests have been conducted for unsaturated Nanning expansive soils and red clay. The creep and rebounding curves of different soil samples are obtained and compared. According to the characteristics of the curves, the multi-component visco-elastic-plastic creep model for expansive soils and red clay are proposed, respectively. The relevant parameters in both models are measured from the tests. It is showed that the calculated curves fit well with the measured curves, which proves the correctness of the proposed models and provides reliable theoretical basis for analyzing the deformation and strength behaviors of expansive soils.