抄録
In the previous paper, we had proposed a new model for frost heaving considering the swelling in soil. In this paper, we have investigated the effect of NaCl solution on frost heaving for swelling soil experimentally. Using bentonite particles in NaCl solution, the swelling pressures in equilibrium decrease with the increase in the concentration of NaCl solution because of decreasing the osmotic pressure difference between NaCl solution and Na^+ ion existing on bentonite particles. Under the constant freezing rate, the frost heaving pressure strongly depends on the concentration of NaCl solution and a higher concentration in NaCl solution leads to a lower heaving pressure due to freezing.
