TITLE:
Review on Water and Salt Migration in Saline Soil and Its Effect on Concrete Structure
AUTHORS:
Jianbing Jiang, Baocun Yang, Boyi Li, Xiaosong Yang
KEYWORDS:
Saline Soil, Sulfate Erosion, Chloride Salt Erosion, Concrete Protection
JOURNAL NAME:
Journal of Geoscience and Environment Protection,
Vol.12 No.12,
December
20,
2024
ABSTRACT: Under freeze-thaw cycle conditions, salt-affected soil will undergo water and salt migration, which can cause damage to the soil itself and affect the quality of engineering. The present study explores the impact of water and salt migration in saline soil on concrete structures, and the following research findings were obtained: The main factors influencing water and salt migration are water, salt, and temperature, with water and salt being internal factors and temperature being an external factor. Convection of moisture, temperature, and cooling efficiency all directly affect salt migration. At the same time, the understanding of the destructive effects of water and salt migration in salt-affected soil on concrete has been gained. In practical engineering, the erosion of salt-affected soil mainly includes environmental water erosion, sulfate erosion, and chloride salt erosion. Environmental water erosion can be further divided into soft water erosion, carbonate erosion, and general acidic erosion. Sulfate erosion can be categorized into ordinary sulfate erosion and magnesium sulfate erosion. Corresponding to the erosion processes, measures such as the rational selection of concrete materials, the installation of isolation layers, and the increase of concrete density are taken. Additionally, future visions for water and salt migration tests and the impact of water and salt on concrete structures are proposed.