International Journal of Engineering Research in Electronics and Communication Engineering

Optimization of High Performance Concrete Mix Incorporating Fly Ash and Slag Aggregate Using Taguchi Method

Author : Revanasiddappa Madihalli ¹ Ramningappa Zalaki ² Dr. Dattatreya J K ³ Dr. Dinesh S V ⁴

Date of Publication :7th June 2016

Abstract: From past few years as the construction activity is increased by and large, production of cement to fulfill the constructional need has resulted in depletion of natural resources causing environmental problems. The use of supplementary cement materials and fillers become imperative due to the increase in cost of cement and its limitations in terms of high energy requirement for production, high carbon dioxide emission and large consumption of natural resources. Many alternative materials such as fly ash, GGBS, silica fume, lime powder ect. There is a scarcity of fine aggregate (river sand) in the developing countries like India. The present study shows the incorporation of fly ash and slag aggregate as partial replacement for cement and fine aggregate in the proportion of 10%, 20%, 30%, 40% and 20%, 30%, 40%, 50% respectively. The factors selected were water cement ratio, fly ash to cement ratio, slag sand to fine aggregate ratio and 4 levels for each was considered, the w/c levels are 0.30,0.33,0.36 and 0.39 and the levels of other factors are as specified above. By using the Taguchi method of optimization the experimental combinations were reduced to 16 by selecting a L16 orthogonal array. The freshened and hardened properties of concrete were examined at 7 days, 28 days. The test results indicates that the highest strength of concrete is obtained by replacing 10% of cement by fly ash, 20% of fine aggregate by slag sand with a water cement ratio of 0.3. The regression analysis was done for the obtained results.

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