Abstract
A pore model is proposed. It is a cylindrical tube whose cross section expands (O-type) or diminishes (X-type) from the inlet towards the middle. Pore volume distribution is derived by using the probability concept. Its density function is an exponential function. The saturation boundary drying curve and the ultimate curve of water content of porous body versus suction are also derived. These curves are represented by three physical parameters, one characterizing pore volume distribution, one showing the minimum pore radius, and one representing pore shape. These theoretical curves are compared to experimental data and are found to be in good agreement for sand and sandy soil. A pore model is proposed. It is a cylindrical tube whose cross section expands (O-type) or diminishes (X-type) from the inlet towards the middle. Pore volume distribution is derived by using the probability concept. Its density function is an exponential function. The saturation boundary drying curve and the ultimate curve of water content of porous body versus suction are also derived. These curves are represented by three physical parameters, one characterizing pore volume distribution, one showing the minimum pore radius, and one representing pore shape. These theoretical curves are compared to experimental data and are found to be in good agreement for sand and sandy soil. © Williams & Wilkins 1976. All Rights Reserved.