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. 2020 Mar 4;13(5):1134. doi: 10.3390/ma13051134

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© 2020 by the authors.

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/).

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Micrographs of the 28-days old alkali-activated slag samples with w/b = 0.45, AM = 1.5 and SS = 10% using as a precursor (a) GGBFS at ×230 and ×1500 of magnification; and (b) MCA-ACBFS at ×230 and ×1500 of magnification.