On assessment of cracking of concrete beams reinforced with BFRP bars
Marek Urbański
Institute of Building Engineering; Faculty of Civil Engineering; Warsaw University of Technology (Poland)
https://orcid.org/0000-0002-3568-6888
Andrzej Łapko
Chair of Building Structures; Faculty of Civil & Environment Engineering; Bialystok University of Technology (Poland)
Abstract
This paper presents a comparative analysis of experimental and theoretical crack widths of simply supported beams reinforced with BFRP rebar (Basalt Fiber Reinforced Polymers). The tested BFRC model beams have been made of concrete class C30/37 and of bottom flexural basalt bars 8 mm in diameter. The reference RC beams with traditional flexural steel reinforcement have been additionally made of the same diameter. Beam deflections, concrete crack widths and strength capacity of beams reinforced with BFRP bars as well as with traditional steel bars have been registered. It has been shown that crack widths of beams reinforced with BFRP bars have been much (three to four times) higher than in the beams reinforced traditionally.
Keywords:
BFRP, cross-sectional stiffness, concrete, basalt bars, cracking behaviorReferences
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Authors
Marek UrbańskiInstitute of Building Engineering; Faculty of Civil Engineering; Warsaw University of Technology Poland
https://orcid.org/0000-0002-3568-6888
Authors
Andrzej ŁapkoChair of Building Structures; Faculty of Civil & Environment Engineering; Bialystok University of Technology Poland
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