Abstract: The one dimensional secondary consolidation properties of the soft soil underneath a bridge site in Zhuhai, Guangdong Province are laboratory investigated. The coefficient of the secondary consolidation were tested under various moisture contents and loading conditions. The results indicate that the secondary consolidation coefficient increases with the increase of the confining pressure. The secondary consolidation process is affected by the moisture content of the soft soils. The secondary consolidation decreases in the reloading process after the unloading. 

Key words: Soft Soil, Coefficient of Secondary Consolidation, Moisture Contents, Unloading and Reloadings