Correlation between Mechanical Properties and Suction Calculated by X-ray CT of Unsaturated Sandy Soil

In this study, the effect of suction on strength and deformation properties were evaluated by means of X-ray CT scan, unconfined compression test and bender element test on a sandy soil.The following conclusion can be derived from the test results presented in this paper:-Change of unconfined compression strength, elastic shear modulus and suction with respect to the increase of water content showed a similar trend.-The water content that indicates the maximum value of unconfined compression strength, elastic shear modulus and suction did not exactly match. Based on this result, it is indicated that change of mechanical properties of compacted sandy soil is related also factors such as coordination number, in addition to suction.