EXPERIMENTAL STUDY OF BEHAVIOUR OF COMPACTED SOILS ON DRYING PATH
In the paper, the empirical relationship between matric suction and void ratio on drying path are established for four types of soils including sand, silt, clay and soft clay by utilizing the shrinkage curves and the soil-water characteristic curves which are determined through experimental tests. It is indicated that during the process of drying, the soil sample continuously shrinks with increase of matric suction. However, increase of suction will display no effect on the shrinkage deformation of the soil sample once the matric suction increases to a given value which is defined as the shrinkage limit suction ss. The values of ss are positively dependent on plasticity index of soil. The process of shrinkage of soil is divided by yielding suction s0 and shrinkage limit suction ss into three stages, i.e., elastic stage, elasto-plastic stage and stage of shrinkage limit. In the process of drying-shrinkage of soil, shrinkage of the soil is almost complete when the degree of saturation of the soil sample decreases to 90％ and the void ratio of the soil sample becomes constant when the degree saturation of soil has reduced to 70％.
Mao-tian Luan Dong-lin Wang Qing Yang
State Key Laboratory of Coastal and Offshore Engineering, Dalian University of Technology, Dalian 116024,P.R.China;School of Civil and Hydraulic Engineering, Dalian University of Technology, Dalian 116024, P.R.China
国际会议
南京
英文
261-265
2007-04-21（万方平台首次上网日期，不代表论文的发表时间）