Abstract
The long-term mechanical property of cement-treated sands by the cement stabilization has not been investigated and cleared enough. To leverage cement-treated ground as structural foundation ground in a positive way, there is a need to understand the long-term mechanical property of cement-treated ground. This study is related to the evaluation method concerning about the long-term mechanical property of cement-treated sands by the cement stabilization. The unconfined compression tests were performed on the cement-treated sands which aged about 10 years. And the method of predicting unconfined compression strength ‘qu’ of aging cement-treated sands was proposed by using the relation between the ‘qu’ and the stabilizing material-to-water ratio based on test results in short-term. The hollow cylindrical torsional shear tests were performed under drainage conditions to specimen which cured by about ten years. The results show that its shear strength and residual strength are related with its unconfined compression strength ‘qu’, which is shown as the failure criterion of the power function type. Finally, we propose the evaluation method of shear strength and residual strength of aging cement-treated sands using the failure criterion of the power function type and the method of predicting ‘qu’.
