Abstract
The minimum and the maximum density test for sandy-gravel is not standardized unlike for sand which is already standardized. In this research, a series of minimum density tests useing ten soil molds are performed as well as minimum and maximum density tests employing a 20cm inside diameter and a 20cm height mold and vibrating unit on sandy-gravel materials. The effects of testing details such as soil placement in the mold, soil surface cutting, how to density by a mechanical vibrator and the effect of particle gradations of tested materials are thoronghly investigated. Based on the results, how to standardize the minimum and maximum density test for sandy-gravels is proposed.
