ABSTRACT

The CSG (cemented sand and gravel) method is a construction technique using as raw materials earth and gravel generated from a local construction site, mixing them with cement and rolling with vibration rollers. The continuous technical improvement related to the CSG method in Japan is attracting much attention as an alternative dam construction technique to the conventional RCD method.

The CSG method was conducted on a test scale prior to actual application. This paper reports the work specifications of the CSG method intended for full application, the concept of how to set the quality control targets for the method and the test results on properties such as overflow resistance, water imperviousness and durability. Based on these test results, the paper examines the CSG structure design method and summarizes the results of a temporary structure constructed using the method, thereby clarifying the characteristics and advantages of the method using a variety of locally generated materials.