Effect of Metakaolin Content on the Properties of High Strength Concrete
نویسندگان
چکیده
This study presents the effect of incorporating metakaolin (MK) on the mechanical and durability properties of high strength concrete for a constantwater/binder ratio of 0.3.MKmixtureswith cement replacement of 5, 10 and15 %weredesigned for target strength and slump of 90 MPa and 100 ± 25 mm. From the results, it was observed that 10 % replacement level was the optimum level in terms of compressive strength.Beyond10 %replacement levels, the strengthwasdecreasedbut remainedhigher than the controlmixture.Compressive strengthof106 MPawasachievedat10 %replacement.Splitting tensile strengthandelasticmodulusvalueshavealso followed the same trend. Indurability testsMKconcreteshaveexhibitedhigh resistancecompared tocontrol and the resistance increases as theMKpercentage increases. This investigation has shown that the local MK has the potential to produce high strength and high performance concretes.
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