Deformation properties of chloride saline soil under action of a low-temperature environment and different loads

摘要

To find the deformation properties of chloride saline soil under the influence of a low temperature environment and differ-ent loads, two types of chloride saline soil were selected and their deformation process was tested in the laboratory and an-alyzed during the cooling process in the sensitive cryogenic temperature range. The research results show that high-chlo-ride-salt saline soil underwent little volume change under the no-load condition during the cooling process. Under static-load and dynamic-load conditions, different degrees of settlement deformation occurred; throughout the entire cooling process, another chloride saline soil with a high proportion of sulfate salt underwent volume expansion under no-load and static-load conditions. Under the no-load condition, a certain degree of settlement deformation occurred. Deformation properties were evaluated at different time points during the cooling process for two kinds of chloride saline soil. Finally, deformation characteristics of chloride saline soil were analyzed from the perspective of salt type and crystallization varia-tion under the action of a low-temperature environment and different loads .