Effects of Slag and Fly Ash on the Durability of Acrylic Emulsion Polymer–Modified Mortar
Publication: Journal of Materials in Civil Engineering
Volume 32, Issue 7
Abstract
Acrylic emulsion polymer–modified mortar (AEPM) is widely used for repairing and maintaining the surface of existing concrete structures. In this study, the durability of AEPM was improved by using slag and fly ash. Experimental investigations, including the underwater steel ball test, rapid chloride migration test, and accelerated carbonation test, were employed to characterize the effects of slag and fly ash on the abrasion resistance, chloride penetration resistance, and carbonation resistance of AEPM, respectively. The results showed that there was a strong relation between the use of slag and fly ash and the abrasion resistance, chloride penetration resistance, and carbonation resistance of APEM: (1) the abrasion resistance of APEM first increased and then decreased with the increase of slag and fly ash; (2) the chloride-penetration resistance of APEM increased linearly with the increase of slag, but first increased and then decreased with the increase of fly ash; and (3) the carbonation resistance of APEM decreased slightly with the increase of slag and fly ash. The proper quantity of slag could significantly improve the durability of AEPM, and a suitable content of slag is 6%–12%. A prediction equation of the abrasive strength of AEPM with slag and fly ash is proposed.
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Data Availability Statement
All data, models, and code generated or used during the study appear in the published article.
Acknowledgments
The work carried out in this paper was sponsored by the National Key R&D Program for the 13th Five-Year Plan of China (No. 2018YFD1101001).
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Published In
Journal of Materials in Civil Engineering
Volume 32 • Issue 7 • July 2020
Copyright
©2020 American Society of Civil Engineers.
History
Received: Aug 8, 2019
Accepted: Dec 9, 2019
Published online: Apr 18, 2020
Published in print: Jul 1, 2020
Discussion open until: Sep 18, 2020
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