Parameters such as soil fabric, mineral composition, plasticity and grain size distribution together with soil-volume behavior are essential for the evaluation of shrinkage and cracking processes in soils. This paper presents the results of a laboratory testing program conducted on surface Bogotá clay to evaluate basic geotechnical properties and compressibility soil parameters due to suction changes. Water retention curves and suction controlled oedometer tests, were used to evaluate the effects of suction changes. Calibration of suction
