Experimental study on erosion of high-strength concrete in acidic environment
To study the acid erosion resistance of high-strength concrete,sulfuric acid(H2SO4)and hydrochlo-ric acid(HCl)were selected as two acidic media.The changes in appearance,quality,and compressive strength of high-strength concrete in different acidic environments were analyzed.SEM and XRD were used to explore the erosion mechanism and phase composition from a microscopic perspective.The results showed that under the erosion of H2SO4,a white thin film repeatedly formed and peeled off on the surface of the specimen,and the quality of high-strength concrete showed a trend of initial increase,decrease,and then increase.Under the erosion of HCl,the small pores on the surface of the specimen gradually enlarged,and its quality showed a trend of initial decrease and then increase.In addition,with the increase of erosion time,the compressive strength of high-strength concrete decreased gradually under the erosion of both H2SO4 and HCl solutions.Compared with the simultaneous erosion of H2SO4,more cracks and pores were generated on the surface of high-strength concrete under HCl erosion,showing a stronger erosion capability.
high strength concreteresistance to acid attackcompressive strengthmicromorphology
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维普
