凍結による土壌の体積変化について

Abstract

In cold regions, the considerable uplift of ground surface is often seen as the soil isfreezing. This uplift is called as "Frost heaving ". Uneven heave of ground surfacebrings the heavy damages to the floor of railway, pavement of road and foundation ofbuilding. For the prevention of these damages, the behavior of frost heaving must beunderstood exactly and fully.On this point of view, the freezing expansion of soil was measured under variouscompressive loads, using silty sand sampled in alluvial layer in Osaka and from the re-sults of examination, it was found that1) the moisture in soil was supercooled and the greater the cooling rate was, the hig-her the supercooling temperature was.2) the amount of expansion in the direction parallel to the horizontal plane was diffe-rent from the amount in the direction perpendicular to horizontal plane.