|
Abstract In this study, soil samples collected from Awati Township, Kashgar City, were analyzed using ion chromatography to identify corrosive ions. Composite salt solutions were prepared using sulfate and chloride ions, which have significant corrosive effects on concrete, for complete immersion tests. This study investigated the influence of composite salt erosion on key mechanical properties of concrete, such as compressive strength and flexural strength. The results indicate that changes in composite salt concentration and erosion duration both alter the mechanical properties of concrete. For solutions of the same concentration, as erosion time increased, the compressive strength of concrete exhibited a slight initial improvement, followed by a significant decline in mechanical properties during the later stages of erosion. With the progression of erosion, the compressive and flexural strengths of cement mortar decreased. When the erosion duration was constant, higher salt concentrations led to greater negative impacts on concrete's mechanical properties. During the composite salt erosion process, chloride ions disrupt the protective film on the concrete surface. Sulfate ions react with internal components of the concrete, causing the disorder of the chemical composition in concrete, increased porosity, and the development of wider cracks within the specimens, ultimately leading to structural instability.
|
|
Published: 27 April 2026
|
|
|
|
2026, Vol. 0 
