A New Model for Evaluating the Behaviour of Swelling Soils

Abstract

In many areas around the world, there are clayey soils that have the potential to change their volume caused by the variation in their water content. Increasing or decreasing the water content caused the clayey soils to swell or shrink, respectively. This phenomenon may cause the uplifting and settlement of structures, which may lead to considerable financial damages. The estimation of swelling displacement without addressing the swelling rate have been published by several research works. This drawback leads to the development of a new model that takes into account the swelling behavior of soils with time. The model, which consists of two hyperbolic curves, was compared with swelling test results performed on soil samples taken from several locations in Israel. Data test results were used to compare the newly introduced model with other existing mathematical models found in the literature. This analysis shows that the new model represents more accurately the behavior with time of the swelling clayey soils measured in laboratory test results than the existing hyperbolic models.