Abstract
The authors have proposed a new dynamic compaction technique making use of not only free fall energy but also rotational energy of the hammer for the purpose of the advancement of the densification of the granular soil ground. In this study, the small scale model tests and the large scale field tests to simulate the usual dynamic compaction method (DCM) and the dynamic compaction method with rotational hammer (RDCM) were conducted. From the test results, it is verified that the increments of the cone penetration resistance by RDCM are generally larger and the settlement of the ground surface by RDCM is larger than DCM.
