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Reliability Analysis of Strength Characteristics if Concrete with Partial Replacement of Cement with Metakaolin and Fly Ash
(2017-08-16T11:28:17Z) Raju, Nellur; Sanju, Kumar
The effects of mineral admixtures, by partial replacement of cement with metakaolin and flyash, have resulted in improved performance in terms of compressive strength. Experimental work was carried out to investigate the effect of replacing cement with metakaolin and flyash partially and keeping same water cement ratio. Mathematical model used in the succeeding section for evaluation of partial safety factors corresponding to varying reliability indices, for concrete mixes, takes into account the variations in the water cement ratio and percentage replacement of cement by metakaolin and fly ash. In the present study, Reliability based partial safety factors for compressive strength of concrete with partial replacement of cement by flyash and metakaolin have been developed considering the strength as a random variable. The compressive strength of concrete depends upon the properties of its constituent materials viz. cement, fine aggregate, coarse aggregate and mineral admixture such as flyash and metakaolin etc. In the present investigation, step by step procedure has been suggested to find out the partial safety factor.