When expansive clay is wetted, deformations occur both vertically and laterally. If it is tested
in an oedometer ring apparatus the lateral deformation will be restrained by the wall of the
ring. This paper present the results of an experimental investigation using modified
oedometer test for measuring the vertical and lateral swelling potential and lateral pressure
of disturbed expansive clay soil. Series of modified oedometer tests were conducted with
initial water content of 20%, 25% and 30%, to predict the vertical and lateral swelling …

The authors have prepared a significant investigation in swelling behavior of expansive clay.
The lateral swelling potential obtained from modified oedometer test was especially
interesting. Discussant used the term of swelling potential to represent both strain and
swelling pressure. The effect of three different initial water contents, which is 20%, 25%, and
30%, on swelling potential has been studied. The specimens were prepared at similar
densities. The lateral swelling potential has been measured from the installed strain gauges …