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Volume Title: ICASGE2023

DOI: ICASGE-MAT

¹Mahmoud Hussein Mohamed ; ²M. Anwar Anwar; Mahmoud Hussein Mohamed; M. Anwar Anwar

¹geotechnical department, construction research institute, NWRC, Egypt

²Construction Research Institute, National Water Research Center, Egypt

This research presents the results of an experimental work which investigates the effect of using silica fume (SF) as replacement part of ordinary Portland cement (OPC) content on sulphate resistance of concrete. The studied mixes are part of an experimental program which designed to intensively investigate the influence of using binary and ternary cementitious materials on different properties of concrete. Three groups of concrete mixtures were studied; each group involves three mixes. The concrete mix proportions were made with water / binder material ratios of 0.4, 0.5 and 0.6 and adjusted to produce concrete with proper values of air content and slump. The tested specimens were cured in water until testing day. After 28 days of water curing, specimens of concrete were exposed to sodium sulphate solution for 6 months. The hardened concrete properties were investigated through destructive and non-destructive tests at various specimens age. The research results showed that using silica fume improved the resistance of concrete to sulphate attack. Therefore, with considerable proportions, using silica fume as part of cement content in concrete industry improves the performance of concrete for sulphate resistance.

Silica Fume; Portland cement; concrete; Water to binder material ratio; Sulfate resistance

Materials Properties and Testing (MAT)