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. 2018 Jun 16;11(6):1028. doi: 10.3390/ma11061028

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© 2018 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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Appearances of GFRP bars after elevated temperatures exposure: (a) at 100 °C and holding time of 2 h; (b) at 150 °C and holding time of 0 h; (c) at 200 °C and holding time of 2 h; (d) at 250 °C and holding time of 0 h; (e) at 300 °C and holding time of 1 h; (f) at 350 °C and holding time of 0 h.