The Relations of Change Rate of Constitutive Variables for the Freezing and Thawing of Water Saturated Porous Media

作     者：陆宏轮 LU HONGLUN

出 版 物：《Journal of Modern Transportation》 (现代交通学报（英文版）)

年 卷 期：1999年第16卷第2期

页      面：173-180页

学科分类：081803[工学-地质工程] 08[工学] 0818[工学-地质资源与地质工程] 

主　　题：change rate constitutive variables independent variables freezing and thawing porous media 

摘      要：The relations of change rate of an independent variable, volumetric strain of the porous skeleton, with the change rates of a kind of constitutive variables, such as porosity, volumetric strain of the solid matrix, are derived from the definition of the porosity of water saturated porous media; and the relations of the change rates of another two independent variables, pressure of the pore liquid water and temperature, with the change rates of another kind of constitutive variables, such as pressure of the pore ice, average pressure of the pore liquid water and ice, and average stress of the solid matrix, are obtained from the Clausius Clapeyron relation in the process of freezing or thawing, definitions of the average pore pressure and effective stress. Based on the hypothesis of linear thermoelasticity, principle of effective stress and these relations, the change rates of all constitutive variables may be described with the change rates of the three independent variables.