Showing papers by "Delwyn G. Fredlund published in 1977"
TL;DR: In this article, a stress state variable for an unsaturated soil is proposed on the basis of writing force equilibrium equations for each phase, within the context of multiphase continuum mechanics.
Abstract: An unsaturated soil is visualized as a four-phase system, the fourth phase being the air-water interface commonly referred to as the contractile skin. Suitable stress state variables for an unsaturated soil are proposed on the basis of writing force equilibrium equations for each phase, within the context of multiphase continuum mechanics. The analysis indicates that any two of three possible normal stress variables can be used to define the stress state. Experimental null-type tests verified the proposed stress state variables for the soil structure and contractile skin of an unsaturated soil.
749 citations
TL;DR: In this article, the authors compare six methods of slices commonly used for slope stability analysis, and compare them with the factor of safety equations written in the same form, recognizing whether moment and (or) force equilibri...
Abstract: The paper compares six methods of slices commonly used for slope stability analysis. The factor of safety equations are written in the same form, recognizing whether moment and (or) force equilibri...
505 citations