The conditions of bulk clay soil compaction

摘要

Testing of bulk clay soil with static cyclic loading was carried out in order to determine the required number of loading-unloading cycles to achieve a standard soil compaction at a given humidity,as well as to assess the content of bound water.Several samples of different moisture content of the dust loam in the compression device were tested by applying pressure in one stage and unloading with the measurement of deformation of the compaction and expansion of the soil sample.The number of cycles of the test soil samples was limited to the stabilization of the values of the coefficient of the elastic deformation work,the same for all samples of different moisture.Here proposed method of selection of the elastically deformable water and water involved in the inelastic deformation as a phase state of aggregation of the soil.Calculations of the volume content of mineral particles in the soil,elastically deformed water and water involved in inelastic deformation of the sample are made through the coefficient of elastic deformation.It is found that with increasing the density of the soil volume content of mineral particles and the elastically deformable water increases and correlates with the dry density of the soil and the volumetric water content involved in the inelastic deformation of the sample virtually unchanged.