The effects of salt contents on the geotechnical properties of some soft soils in the coastal area of Vietnam

Tóm tắt

Soft soil is widely distributed in Vietnam, especially along with the coastal areas. Some geotechnical properties of soft soil can be affected by seawater intrusion due to climate change and sea-level rise. However, the research on the effect of seawater on geotechnical properties of soft soil in coastal areas of Vietnam is still limited. In this study, the effects of salt solutions with different seawater proportions on some geotechnical properties of soft soil distributed in some areas from Mong Cai to Thanh Hoa province have been extensively investigated. The undisturbed soil samples were soaked into different salt solutions for ten days before testing. The research results show that the increase in seawater proportions causes an increase in salt content in the soil. Regarding some geotechnical properties, the compression index, and vertical coefficient of consolidation increase while the Atterberg limits and the undrained shear strength of the soil decrease as the salt contents in soil increase.