Concrete Strength Approximator 2000

This function approximates the compressive strength of a concrete mix based upon density properties.

The final calculation of strength is adapted from "Correlation between 28-Day Strength and Density" by Mattacchione & Mattachione as published in Concrete International Volume 17 Issue 3. Per the authors' recommendation, it should be noted that while a strong correlation was found between density of a concrete mix and the 28-day compressive strength, tested 7-day strength is typically a more accurate indicator. However, this approximation may be of use for very rough early engineering calculations or for design of non-structural components.
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Run this function and follow input requests in the command window.
Make adjustments to material density values as needed.