CONSOLIDATION MECHANISM OF CLAYEY GROUND UNDER HEATED-DRAIN CONSOLIDATION

Abstract

Soft clays treated by the lime columns undergo high-temperature consolidation for long period. However, the influence of high temperature on soft clay is not well studied yet.
In the present study, experimental study on the heated-drain consolidation is conducted by model equipment in the laboratory. Results of the experimental study are analysed by (1) radial-zoning of soft clay for heated-drain consolidation, and (2) coupled hydro-thermo-mechanical analysis. After the study, heated drain is found to accelerate the consolidation and create stronger structure of clays. In addition, clays near the drain are found to undergo secondary consolidation.