Abstract
In this investigation, clastic samples of mudstone produced by in-situ slaking and crushed samples obtained from sound blocks of mudstones which were not affected by the effect of slaking were used, and the compaction properties of crushed mudstones were investigated. The compaction tests were carried out under various conditions. After compaction tests, grain size analyses were performed and the states of grain crushing during compaction were investigated. In order to estimate the compaction effect, compression and CBR tests were also performed on compacted samples. It was reported that the compaction properties of crushed mudstones were influenced considerably by compaction condition, effect of submergence and initial gradation of sample. In particular, as the submerged samples show remarkable grain crushing during compaction, they have large value of dry density.
