Application of Granulated Blast Furnace Slag in Cement Composites Exposed to Biogenic Acid Attack

摘要: The deterioration of cement-based materials used for the civil infrastructure has led to realization that materials, such as concrete, must be improved in terms their properties and durability. Leaching calcium ions increases porosity cement- based consequently resulting a negative effect on durability since it provides an entry aggressive harmful ions, causing corrosion concrete. use supplementary cementing composite have been reported improve resistance concrete by chemicals. paper is focused investigation influence biogenic acid attack cement composites affected bacteria Acidithiobacillus thiooxidans. specimens with 65 wt. % addition antimicrobial activated granulated blast furnace slag increasing factor well without any were studied. experiments proceeded during 150 days under model laboratory conditions. pH values chemical composition leachates measured after each 30- day cycle. silicon contents evaluated using X - ray fluorescence method (XRF). Summarizing results, 65% was not confirmed more resistant.