Research On Basic Performance And Mechanism Of Concrete Deterioration By Sulfate Erosion

This article from the erosion of physical and chemical attack on both sides of the failure mechanism of sulfate attack; Summary of the concrete by sulfate attack, its own characteristics and working environment of the impact of erosion damage; combination of physical erosion and chemical erosion mechanism, the cycle of wet and dry straight soak method and test results, the possibility to carry out the analysis; and concrete Study of sulfate attack the problems that exist in a summary.Through the analysis of experimental results, the theoretical analysis of sulfate concrete basic performance degradation was studied.In different periods and different water erosion conditions, the concrete is strongly deterioration after eroded. Compared with surface morphology and loading experiment of failure form, analysis of the concrete specimens after erosion damage morphology. Compared the change of cube compressive strength, the flexural strength and axis compressive strength, predict when the concrete occur the ultimate failure. Through the measurement of concrete deformation condition in loading function after the erosion, and compared with the curve of uncorroded concrete and theoretical models. Analyzing the limit load and the change of limit load of concrete and when the ultimate load appears and the shape of the curve.