Abstract
Based on biphasic mixture model including swelling effect, frost heaving for swelling soils has been investigated theoretically. For both periods of freezing and no freezing, the calculated results for swelling pressure were compared with the experimental results using bentonite particles. In period of freezing, the increase in swelling pressure is related to the increase in the solid fraction due to separating of particles from freezing front. In period of no freezing, the increase in swelling pressure is related to the equalization of the solid fraction distribution due to the diffusion of swelling particles combined solid and liquid attributes.
