Abstract
Most of old fill-dams were accumulated with a muddy soil in reservoir. This muddy soil is generally very soft clayey soil accompanied with the changes of the water content and the grading. In order to make efficient use of such a muddy soil as embankment soil, we have developed a new type method to repair the damaged embankment by the cement-mixed muddy soil. The strength and strain behavior of the cement-mixed muddy soil is influenced considerably by the water content and the grading of muddy soil. We propose a strength control method considering the effect of the grading and the water content of muddy soil on the cement-mixed muddy soil, and proved the proposed method by the site investigation test under actual condition.
