New Approach for Characterization and Mitigation of the Swelling Phenomenon

This article first introduces a new method of characterization expansive clays after oedometer test results performed on intact saturated clay specimens. On the presumed specimens, tests are preceded by free swelling from which pressure is measured. From current carried out and non-expansive clays, ratio compression index (C c ) s was determined. A threshold value C /C identified to distinguish between specimens Second, novel mitigation phenomena validated performing preceding measurement pressure. Oedometer 53% thickness specimen overlaid 47% sand showed significant reduction compared that measured full specimen. The solution reduced effect placing compacted granular layer as an interface foundation. has been adopted approved in forthcoming lightweight building construction at Faculty Sciences Tunis City.