ABSTRACT
The study of engineered expansive soils attracts the attention of researchers since this type of mixed soil is increasingly used in many geotechnical and geoenvironmental applications. This chapter studies properties such as swell and swelling pressure, rate of swell, and water adsorption. Kaolin-bentonite mix and sand-bentonite mix specimens were statically compacted and tested in a conventional oedometer apparatus for swelling determination. The results of the study showed that the mechanism of swelling followed three distinct stages: intervoid, primary, and secondary swelling. Swelling occurred since the soils adsorbed water. The rate of swelling and maximum swelling were successfully determined using a hyperbolic equation.
