A.R. Estabragh - Faculty of Soil and Water Engineering, University of Tehran,
B. Parsaei - Ms Student of Water Structural Engineering, University of Tehran

Experimental cyclic wetting-drying tests were performed on compacted expansive soil samples to study the effect of sample deformation on wetting-drying behavior of an expansive soil. The tests were carried out in a modified conventional oedometer apparatus at a surcharge pressure of 6.25 kPa. The test results revealed that swell-shrink was reversible when the vertical deformation, water content and specific volume during cyclic of wetting and drying were the same

expansive soil, cyclic wetting-drying, oedometer