The influence of elevated temperatures on the behavior of bent elements reinforced with FRP bars

openaccess, Vol. 573 (5) 2020 / czwartek, 28 maja, 2020

(Open Access)

Protchenko Kostiantyn. 2020. The influence of elevated temperatures on the behavior of bent elements reinforced with FRP bars. Materiały Budowlane. Volume 573. Issue 5. Pages 31-33. DOI: 10.15199/33.2020.05.05

Accepted for publication: 12.09.2016

This paper describes the results of experimental studies for full-size beams reinforced with various types of FRP reinforcement: (i) Basalt – FRP (BFRP), (ii) Hybrid – FRP (HFRP) with carbon and basalt fibers, and (iii) nano-Hybrid-FRP (nHFRP) with modified epoxy resin. The fire resistance was checked in accordance with the contractual fire scenario based on the ISO-834 standard curve – the elements were subjected to loading (4-point bending) and at the same time heating of three edges (from the sides and from the bottom). The results showed that the temperature has a significant impact on the load-bearing capacity of the elements (the strength capacity was reduced by approximately 40%) and on the method of their destruction. The beam reinforced with BFRP bars showed the best results, destruction of the sample occurred after 97 minutes, maximum deflection - 16 cm, and the temperature measured on the bottom of the beam reached 940°C and about 600°C on the bars. The fire resistance of FRP reinforced elements was varying and depends on the type of reinforcement used.
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mgr inż. Kostiantyn Protchenko, Politechnika Warszawska; Wydział Inżynierii Lądowej; ORCID: 0000-0003-1357-2174

mgr inż. Kostiantyn Protchenko, Politechnika Warszawska; Wydział Inżynierii Lądowej; ORCID: 0000-0003-1357-2174