碳酸盐渍土工程特性及固化技术研究进展

Research progress on engineering characteristics and solidification techniques of saline-alkali soils

针对碳酸盐渍土区岩土材料的膨胀、溶陷和冻融损伤等病害,综述了碳酸盐渍土物理、化学和工程特性的研究现状。针对如何改变碳酸盐渍土对工程的不利影响,归纳了工程上常用到的固化碳酸盐渍土的方法,并分析了不同方法的固化机理。综述了不同方案固化后的碳酸盐渍土的物理性质、力学性质和在寒区的表现。对固化碳酸盐渍土的发展前景进行了展望,提出了工程上碳酸盐渍土研究的潜在方向。

This paper provides an overview of the current research status on the physical,chemical,and engineering characteristics of saline-alkali soils,focusing on issues such as dilatation,collapsibility,and freeze-thaw damage in the soil materials of saline-alkali soil regions.To mitigate the adverse effects of saline-alkali soils on engineering projects,common stabilization methods are summarized and their respective solidification mechanisms are analyzed.Furthermore,this paper reviews the physical and mechanical properties of saline-alkali soils after solidification through various approaches,particularly in cold regions.The prospects for the future development of solidifying saline-alkali soils are discussed,along with potential directions for engineering research in this field.