Abstract
Normal concrete is a mixture of cement, water, fine and coarse aggregates. Concrete mix design involves selecting the correct proportions of these constituent materials to produce concrete having the specified properties. Various mix design methods have some limitations. Time, energy and money are sometimes being wasted in order to get the appropriate mix proportions. In this paper, a mathematical model based on simplex method is formulated for the optimization of concrete cube strength. The model can provide all the possible mix ratios that can yield the desired concrete cube strength. It can also produce the concrete cube strength if mix proportions are given as well as the optimum value. Statistical tests were used to verify the adequacy of the model. They all agreed to the acceptance of the model.
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