Sulfate Resistance of Concrete with Ground Granulated Blast-Furnace Slag
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Abstract
This paper aimed to study the sulfate resistance of concrete with ground granulated blast-furnace slag (GGBS). The expansion and weight loss of concrete samples in sodium sulfate (NS) solution and magnesium sulfate (MS) solution were evaluated for the sulfate resistance. The binder content of concrete with GGBS of 320 and 400 kg/m3 was used. The water to binder ratio was kept at 0.50 for concrete. The results shown that the expansion in NS solution of concretes with GGBS had lesser than that of OPC concrete. The expansion in NS solution of GGBS concrete with low binder content had lesser than that with high binder content. In case of MS solution, the expansion of concrete with GGBS was higher than that of OPC concrete, except concrete with small amount of GGBS had smaller expansion than OPC concrete. Likewise, the weight loss in MS solution of concrete with GGBS was larger than that of OPC concrete. Finally, the weight loss in NS solution of GGBS concrete with low binder content had less than that with high binder content.
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References
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