Abstract
Coal ash is sometimes used to reclaim seashore and forms soft ground because of its high fines content and high water content. So far, soil improvement methods for cohesive soils have been employed in improving coal ash reclaimed ground. In this research, the dynamic compaction method, which was originally developed for non-cohesive soils, is applied to a coal ash reclaimed site for the first time. A series of in situ soil tests, composed of cone penetration tests before and after the improvement, in situ pore pressure measurement, etc. is carried out to evaluate the improvement effect. Consequently, it can be said that dynamic compaction method effectively improves coal ash ground. Furthermore an evaluation method for mechanical properties of improved coal ash ground is proposed based on the measured results in this site.
