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Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
Typical 3D and 2D plots for the effect of (a) concentration versus soaking time (b) concentration versus drying time and (c) soaking time versus drying time on tensile strengths.