Other factors that can affect the performance of GGBFslag in concrete are water-cementitious materials ratio, physical and chemical characteristics of the portland cement, andcuring conditions. As seen in Fig. 5.2, the percentage ofstrength gain achieved with a Grade 120 GGBF slag is greater in concrete mixtures which have high water-cementitiousmaterials ratio than in mixtures with a low water-cementitious materials ratio (Fulton 1974; Meusel and Rose 1983).The same trend was also noted by Malhotra (1980).
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