Performance Comparison of High Strength Concrete Prepared with Metakoalin and Silica Fume
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Abstract:
This paper makes a comparison of high strength concrete prepared with Metakoalin and that prepared with silica fume in terms of their workability, compressive strength , shrinkage and resistance to sulphate attack. The research results indicate that high strength concrete prepared with Metakoalin is better than that prepared with silica fume in terms of workability. When the water to binder ratio is high, concrete prepared with Metakoalin has a greater compressive strength than that prepared with silica fume. In contrast, when the ratio is low, it is the concrete prepared with silica fuma has a higher strenth. Concrete prepared with Metakoalin has a smaller auto -shrinkage and dry-shrinkage than that prepared with silica fume. And concrete prepared with Metakoalin will be just as good as concrete prepared with silica fume in terms of resistance to sulphate attack. It is indicated by the research that Metakoalin has same high activity as silica fume in the preparation of high strength concrete.
