Study on the effect of pozzolanic materials on Sulfuric acid solution attack

Abstract

This research aims to determine the corrosion resistance performance in sulfuric acid solutions of cement paste containing modified pozzolan and natural pozzolan materials. The natural pozzolanic material used in the research was ground for two hours to a finer size prior to experimentation. The cement paste used as a representative in the study was cast into specimens cubes measuring 50x50x50 mm and water to binder ratio was 0.30. The results found that the type and type of pozzolanic material affects the corrosion resistance of sulfuric acid solution attack. Natural pozzolan materials showed the best performance of resistance to sulfuric acid solutions, followed by modified pozzolan materials with low CaO/SiO₂, and modified pozzolan materials with high CaO/SiO₂ showed the least resistant to sulfuric acid solutions attack. In this study, it was found that the CaO/SiO₂ ratio had a significant effect on the corrosion resistance of sulfuric acid solutions.