Abstract
The effect of sodium sulfate crystallization on soil freezing temperature, and the changes in salt expansion and frost heave pressure with temperature were analyzed experimentally and using crystallization theory. The Pitzer ion model was used to find the supersaturation ratio of a sodium sulfate solution in soil. The relationship between the initial supersaturation ratio and temperature was obtained, which provided criteria for the presence of salt crystals over the entire temperature range. Experiments were carried out to determine the effect of cooling the sodium sulfate saline soil as well as the location of salt crystallization. Analysis of the location and shape change of salt crystals based on the experiments clarified the interaction between salt crystallization and ice-water phase change. A formula relating the surface free energy of a crystal to its critical nucleation radius was deduced based on the assumption of homogeneous nucleation. Finally, equations for the salt expansion force and frost heave pressure were obtained and their rationalizations were provided.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
