Abstract
This paper describes on the mechanical properties of light-weight soil which were improved cement and foam. Especially, the influence of foam volume ratio on shearing strength in light-weight soil is studied.
As result of these studies, it is clear that the influences of foam volume ratio on shearing strength are affected at axial strain above 5% and high volimetric strain are occured with increment of foam volume ratio. And the failure criteria of light-weight soil is not only indicated the relation q and p′ but also is indicated by consideration of volumetric strain, and it is different by the magnitude foam volume ratio.