Expansion and Weight Loss in Sulfate Solution of Mortar with Fly Ash, Ground Granulated Blast-Furnace Slag, Silica Fume and Limestone Powder
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Abstract
This research aims to study the expansion in sodium sulfate solution and weight loss in magnesium sulfate solution of mortar with fly ash, ground granulated blast-furnace slag (GGBS), silica fume and limestone powder which are industrial wastes. These industrial wastes were used to partially replace in Portland cement type 1 (OPC). The study found that in sodium sulfate solution, expansion of mortars with fly ash, GGBS, silica fume and limestone powder was less than all of the OPC mortars. Except when replaced with limestone powder and with fly ash or GGBS at small quantities, the expansion will be higher than or close to all of the OPC mortars. Besides, in magnesium sulfate solution, weight loss of mortar with GGBS and fly ash was greater than all of the OPC mortars. While the weight loss of mortar with silica fume was no different from all of the OPC mortars. Finally, the replacement of limestone powder in OPC mortars tend to be lesser weight loss than OPC mortars, except when replaced with limestone powder at large amount of fly ash and / or GGBS.
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