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Properties of External Insulation Surface Preparation Mortar Using Expandable Graphite for Fire Resistance

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Yoosong Engineering, Dongan-gu 14054, Anyang, Korea
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Hanyang Experiment and Consulting, Hanyang University, Ansan 15588, Korea
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Hwarok Construction Industry, Hanyang University, Ansan 15588, Korea
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Department of Architectural Engineering, Kangwon National University, Samcheok 25913, Korea
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Authors to whom correspondence should be addressed.
Sustainability 2019, 11(23), 6882; https://doi.org/10.3390/su11236882
Received: 14 October 2019 / Revised: 27 November 2019 / Accepted: 2 December 2019 / Published: 3 December 2019
(This article belongs to the Section Sustainable Engineering and Science)
In the case of fire, surface treatment agents used in external insulation finishing methods are substances that are vulnerable to fire. This study examined the incorporation and applicability of expandable graphite in surface preparation mortar so that heat transfer to the surface part can be suppressed even when the cementitious surface preparation mortar is thinly constructed in the external insulation method. Experimental results showed that the mechanical properties of surface preparation mortar were improved by using the fly ash and silica fume. Surface treatment materials using expanded graphite have a characteristic of expanding when a fire occurs. It was experimentally confirmed that incorporating expanded graphite can reduce the phenomenon of heat penetration to the rear surface when the surface preparation mortar is exposed to high temperatures such as a flame. View Full-Text
Keywords: external insulation; surface preparation mortar; expandable graphite; fire resistance external insulation; surface preparation mortar; expandable graphite; fire resistance
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Song, S.-Y.; Ryu, H.-S.; Shin, S.-H.; Kim, D.-M.; Park, A.-J. Properties of External Insulation Surface Preparation Mortar Using Expandable Graphite for Fire Resistance. Sustainability 2019, 11, 6882.

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