Abstract
Being an industrial by product, the use of electric arc furnace slag as aggregates could produce highly sustainable concrete. This paper compares the calculated and the predicted packing density values of electric arc furnace slag. By using fine aggregate content of 25%, 50%, 65%, 75% and 90% respectively of electric arc furnace slag, the packing density values were calculated both experimentally and theoretically. The theoretical packing density values were evaluated using the Furnas Model, Toufar Model and the Modified Toufar Model (Europack Model). Using the calculated experimental and theoretical packing density values, mathematical equations were formulated to predict the relation between the packing density and the fine aggregate content of the electric arc furnace slag. Having analyzed the residual component and the standard error values of the linear, exponential and power variations, it was found that the power variation produced the best estimate of the variation of the packing density with the fine aggregate content of electric arc furnace slag aggregates. As such, using the predicted relation for the experimental packing density; a suitable relation that could be used to predict the variation of packing density with the fine aggregate content is described by the relation y = 0.1054x0.422.
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