攪乱された粘土凍土の力学的特性に関する実験的研究

抄録

There have been nothing or few studies on the effect of disturbing frozen soils. An experimental study was carried out by using artificial undisturbed clay samples and was investigated by regression analysis. The obtained main conclusions are as follows. (1) The compressive strength and deformation modulus of frozen clay increased slightly by disturbing. (2) The reason why the strength and deformation modulus increase by disturbing seems to depend on decreasing of water content and increasing of dry specific gravity by disturbing. (3) If high sensitivity clay is frozen, its sensitivity ratio becomes nearly 1 and is not sensitive. (4) The more lime adds to clay, the less strength of unfrozen clay becomes, However, these effect almost disappear, if such a clay is frozen.