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Taguchis Parameter Design Approach to normal cement concrete mixture proportioning

S Sule

Abstract


This paper presents the results of the optimization of normal cement concrete mixture using Taguchi approach. The Taguchi experiments were designed using an L9 orthogonal array with three factors and three levels each. The water-cement ratio (W/C), total aggregate-cement ratio (TA/C) and total aggregate-water ratio (TA/W) were treated as the control factors. The effects of the water-cement ratio, total aggregate-cement ratio and total aggregate-water ratio on the compressive strength were analyzed using signal–to–noise ratios (S/N) and mean response values of the compressive strength of normal cement concrete. The compressive strength was maximized at water-cement ratio of 0.395, total aggregate-cement ratio of 3.795 and total aggregate-water ratio of 9.81 respectively. The mean value of the compressive strength at the optimum settings was 29.32N/mm2 with a tolerance value of ± 4.35Nmm2. A validation test was carried out to investigate the mean value of the compressive strength at the obtained values of optimum settings and was found to be 25N/mm2 which fell within the range of the predicted optimum. The optimization model was tested for adequacy using a normal probability plot and the residuals were found to almost fall on a straight line showing that the errors followed normal distribution. It was also revealed that the water-cement ratio contributed more to the compressive strength followed by total aggregate-cement ratio and then the total aggregate-water ratio.

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DOI: https://doi.org/10.37628/jgget.v4i2.431

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