STUDY ON THE INFLUENCE OF A SPECIFICATION OF BUFFER MATERIAL ON THE COMPACTION CHARACTERISTICS

Abstract

In order to build up the construction technology of buffer for geological disposal of radioactive waste, it is necessary to investigate the compaction characteristics of mixture material of bentonite and silica sand. From the results of static compaction experiment, relation between specifications of buffer and compaction characteristic was investigated. And the particle action mechanism during compaction was investigated by comparison between dynamic compaction and static compaction, and by microscopic observation. As results, the influence factors on compaction characteristics of buffer material are shown from the viewpoint of particle action mechanism.