Heat and Mass Transfer by Vapour in Freezing Soils

Vapour mass transfer is often underestimated when designing the bases for structures in frost susceptible soils. Intensive and long-term vapour transport may lead to excessive heaving associated issues. A model algorithm of its calculation presented this study based on results experimental freeze–thaw cycles nine soil samples with varied density. The temperature field distribution, air voids volume energy comprising latent heat phase transition extracted during drop are main parameters determining velocity amount ice formed. According results, average speed frozen soils was about 0.4 m/h. built 1 h uniaxial freezing due saturated pressure difference 1.64 × 10?5–3.6 10?? g/h loose 1.41 10?? 5.61 10?? dense 10 cm diameter high sections. show that can increase risk growth related problems.