The experimental research on the soil-water characteristic curve of the granite residual soil

Using osmotic method in testing the soil-water characteristic curve of the granite residual soil,the paper introduces the steps of the experiment in detail,and points out the matters need attention.Through the result of the experiment,we found that the water-soil characteristic drops slowly in both the drying and the wetting processes.The granite residual soil has small entering air suction,only about 10kPa,however,the residual saturation degree value is about 20%.This indicates that the residua...