Compressive Strength Development of Fly Ash Concrete for Different Cement Replacement Levels

Dr.B.K.Narendra, Principal, B G S Institute of Technology, B G Nagar-571448, Mandya, Karnataka, India.
Manuscript received on May 07, 2013. | Revised Manuscript Received on May 12, 2013. | Manuscript published on May 20, 2013. | PP: 1-12 | Volume-1, Issue-6, May 2013.
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Abstract: Compressive strength tests were conducted on design mixes M30, M40 and M50 for cement replacement levels (CRLs) of 20%, 35% and 50% for different curing periods of 3, 7, 28, 56 and 91 days. Three water binder (w/b) ratios for each CRL were considered for the study, so that the optimum w/b ratio could be chosen for further study, the optimum w/b ratio being that ratio, which gives a compressive strength equal to that of normal concrete for curing period of 28 days. Tabulated the test results of compressive strength of Fly ash concrete (FAC) and normal concrete (NC) for grades M30, M40 and M50 respectively. The test results of compressive strength development of Fly ash concrete for different cement replacement levels with different curing periods and of normal concrete all of grades M30, M40 and M50 are discussed in this paper.
Keywords: Compressive strength, Cement replacement level, Fly ash concrete.