Wetting and Drying on Matric Suction of Compacted Cohesive Soil

摘要

This paper presents an experimental study on the influence of wettingand drying on matric suction and moisture content of unsaturatedcompacted cohesive soils. Three as-compacted states and three levels ofcompaction energy of soil samples were investigated. Test results showthat water content increases upon wetting and results in significantmatric suction reduction. The effects are the opposite upon drying. Inaddition, the effects of as-compacted state and the compaction energyalso warrant careful consideration. The matric suction appears to be asensible parameter to evaluate the effects of wetting and drying ofunsaturated compacted soils. However, further study is warranted forengineering application.