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This research work examines the cementitious efficiency of metakaolin, a supplementary cementitious materials (SCM) in the production of high strength concrete. The mix design was carried out using the Absolute Volume method. The metakaolin was used to replace cement at 2.5%, 5%, 7.5% and 10% at various water/cementitious ratios of 0.20, 0.25, 0.30 and 0.35. For all mixes, control mix was designed to establish a comparative basis between mixture blended with Mk and ordinary cement concrete. The super plasticizer was also kept constant in all mixes. water-cementitious ratio and curing ages and the response variables (compressive strengths). The results indicated that the mix design adopted was appropriate for the production of HSC of compressive strength 95.33Mpa.

Effect of Metakaolin as a Partial Replacement for Cement on the Compressive Strength of High Strength Concrete at Varying Water/Binder Ratios