An experimental and theoretical study of deflections of BFRP RC beams

• Autorzy: Pawłowski D. , Szumigała M.

Identyfikatory

DOI

10.4467/2353737XCT.15.399.5030

Warianty tytułu

PL

Ugięcia belek zbrojonych prętami bazaltowymi BFRP– badania laboratoryjne i rozważania teoretyczne

• Języki publikacji: EN

Abstrakty

EN

Basalt fiber-reinforced polymer (BFRP) bars are a new material used in reinforced concrete (RC) structures. They present such properties as high tensile strength, low modulus of elasticity and shear strength. Due to these mechanical properties, flexural behavior of BFRP RC elements is significantly different to that of traditional steel RC. This paper presents the results of an experimental and theoretical study of the short-term flexural behaviour of a series of simply supported BFRP RC beams. The beams were tested under four-point bending. The main objective of this paper was to investigate deflections of the beams depending on reinforcement ratio. The results of experiments were compared with code formulations and prediction models.

PL

Bazaltowe pręty zbrojeniowe (BFRP) są stosunkowo nowym materiałem stosowanym w budownictwie. Charakteryzują się one wysoką wytrzymałością na rozciąganie, niskim modułem sprężystości oraz niską wytrzymałością na ścinanie. W artykule przedstawiono wyniki badań laboratoryjnych zachowania się belek zbrojonych prętami BFRP poddanych działaniu obciążenia statycznego. Głównym celem badań było określenie wpływu stopnia zbrojenia na ugięcia zginanych elementów. Rezultaty badań porównano z wynikami obliczeń teoretycznych.

Słowa kluczowe

EN

composite materials; BFRP bar; BFRP RC beams; deflections

PL

materiały kompozytowe; zbrojenie bazaltowe; belki zbrojone BFRP; ugięcia

• Wydawca: Wydawnictwo Politechniki Krakowskiej im. Tadeusza Kościuszki
• Czasopismo: Czasopismo Techniczne. Budownictwo
• Rocznik: 2015
• Tom: Y. 112, iss. 4-B
• Strony: 63--70
• Opis fizyczny: Bibliogr. 20 poz., wykr., tab., wz.

Twórcy

autor

Pawłowski D.

• Institute of Structural Engineering, Faculty of Civil and Environmental Engineering, Poznan University of Technology

autor

Szumigała M.

• Institute of Structural Engineering, Faculty of Civil and Environmental Engineering, Poznan University of Technology

Bibliografia

• [1] fib Bulletin 40/2007, FRP reinforcement in RC structures, technical report, International Federation for Structural Concrete (fib), 40/2007, 3–30.
• [2] Pawłowski D., Szumigała M., Use of FRP reinforcement in building constructions, Przegląd Budowlany, 3/2014, 47–50 (in Polish).
• [3] Kamińska M., The results of tests of composite bars made of BFRP and GFRP, Lodz University of Technology, 2012 (in Polish).
• [4] Garbacz A., Łapko A., Urbański M., Investigation on concrete beams reinforced with basalt rebars as an effective alternative of conventional R/C structures, Procedia Engineering 57/2013, 1183-1191.
• [5] Barris C., Torres L., Tauron A., Baena M., Catalan A., An experimental study of the flexural behaviour of GFRP RC beams and comparison with prediction models, Composites Structures, 91/2009, 586–295.
• [6] Nanni A., North American design guidelines for concrete reinforcement and strengthening using FRP: principals, applications and unresolved issues, Construction and Building Materials, 17/2003, 439–446.
• [7] Kamińska M., The results of tests of bond between composite bars made of BFRP and GFRP and concrete, Lodz University of Technology, 2012 (in Polish).
• [8] Fib Mocel Code, International Federation for Structural Concrete (fib), 2010, 257–259.
• [9] Pawłowski D., Szumigała M., Flexural behaviour of full-scale basalt FRP RC beams – experimental and numerical studies, Procedia Engineering, 108/2015, 518–525.
• [10] Barris C., Torres L., Miàs C., Vilanova I., Design of FRP reinforced concrete beams for serviceability requirements, Journal of Civil Engineering and Management, 18/2012, 843–857.
• [11] Alsayed S.H., Al-Salloum Y., Almusallam T.H., Performance of glass fiber reinforced plastic bars as a reinforcing material for concrete structures, Composites: Part B, 31/2012, 555–567.
• [12] CN, EN 1992-1-1:2004 Design of concrete structures. Part 1-1. General rules and rules for buildings, Comité Européen de Normalisation Brussels, 2004.
• [13] ACI, ACI 440.1R-06 Guide for the design and construction of structural concrete reinforced with FRP bars, American Concrete Institute, 2006.
• [14] Branson D., Deformation of concrete structures, McGraw-Hill, New York 1997.
• [15] ISIS Canada, Reinforcing concrete structures with fiber reinforced polymers, Canada ISIS Canada Corporation, Manitoba 2007.
• [16] CSA, S806-02: Design and construction of building components with fiber-reinforced polymers, Canadian Standard Association, Canada 2002.
• [17] Yost J., Gross S, Dinehart D., Effective moment of inertia for glass fiber reinforced polymer concrete beams, ACI Structural Journal, 6/2003, 732–739.
• [18] Bischoff P., Deflection calculation of FRP reinforced concrete beams based on modifications of the existing Branson equation, Journal of Composites for Construction, 1/2007, 4–14.
• [19] Bischoff P., Gross S., Design approach for calculating deflection of FRP reinforced concrete, Journal of Composites for Construction, 4/2011, 490–499.
• [20] Faza S., GangaRao H., Pre- and post-cracking deflection behaviour of concrete beams reinforced with Fibre-Reinforced Plastic rebars, Proceedings of the First International Conference Advanced Composite Materials in Bridges and Structures, Canadian Society of Civil Engineers, Sherbrook, Canada, 1992, 151–160.

Uwagi

EN

The laboratory tests were partially supported by the Ministry of Science and Higher Education under doctoral grant 01/11/DSMK/0291. The tests specimens were donated by Depenbrock Polska Sp. z o.o. Sp. k.

PL

Opracowanie ze środków MNiSW w ramach umowy 812/P-DUN/2016 na działalność upowszechniającą naukę.