Abstract: This paper presents a study on the qualitative and quantitative relationships of shrinkage characteristics of weathered sand-improved expansive soil versus weathered sand content and the number of freeze-thaw cycles. The expansive soil samples of weathered sand contents of 0, 10%, 20%, 30%, 40%, and 50%, were tested with a contractometer to measure their shrinkage parameters at cycling times of 0, 1, 3, 6, 9 and 12. Test results showed that for soil samples of the same sand content, an increase in the number of cycles results in a decrease in linear shrinkage ratio, volume shrinkage ratio, contraction coefficient, and shrinkage limit. As the sand content is increased at a fixed number of cycles, shrinkage limit is increased while all the other three parameters decreases. At a fixed sand content, the relationship of linear shrinkage versus the number of freeze-thaw cycles is a power function, while the relationship of volume shrinkage versus freeze-thaw cycles is quadratic.