The Experiment Study on Chloride Binding of Cement Paste According to The Al/Ca+Si Ratio

This paper researches the Chloride Binding of Cement Paste according to the Ca/Si and Ca/Al Ratio. The mechanisms of chloride ion binding are not completely known, although it is believed that Alumina contents in cementitious system have an important role. For changing cement paste composition, Ordinary Portland Cement(OPC) paste is substituted by Granulated Ground Blast Slag(GGBS). With increasing the ratio of GGBS substitution(Thus alumina contents is increasing), The chloride binding capacity has a tendency to increase of binding chloride ion capacity