FLOW OF NONFREEZING WATER INTERLAYERS AND FROST HEAVING

Using the thermodynamics of irreversible processes as the basis, the p roblem of the mass exchange between nonfreezing interlayers has been s olved for the slit model of a pore filled with ice, as well as between the thawed and the frozen zone of a porous body. There was shown the important role of disjoining pressure in the formation of equilibrium thicknesses of interlayers and the phenomenon of the frost destruction of porous materials and frost heaving. Experimental corroboration of the developed theory is presented. The problems have been formulated i nvolving further investigations in the field of the theory of motion o f moisture in frozen porous bodies.