Beam bond tests of GFRP and steel reinforcement to concrete

• Autorzy: Szczech D. , Kotynia R.

Identyfikatory

DOI

10.2478/ace-2018-0072

• Języki publikacji: EN

Abstrakty

EN

The paper presents research program of bond between glass fiber reinforced polymer bars and concrete in reference to the steel bars. Bond between the reinforcement and concrete is a crucial parameter governing a behaviour of reinforced concrete members and transferring of the internal forces from concrete to the reinforcement. The use of FRP bars as an equivalent reinforcement to steel in concrete structures has increased in recent years. The FRP bars are very different from steel, mainly due to much lower elasticity modulus and their anisotropic structure. Good performance of FRP reinforced concrete requires sufficient interfacial bond between bars and concrete. However, there are no specific standards referring to the surface preparation of these bars, that leads to variable bond behaviour of the composite reinforcement to the concrete. The objective of the study was to investigate the influence of variable parameters on the bond behaviour to concrete. The experimental program consisted of eighteen beam bond specimens varying in: bar diameter (12mm, 16mm, 18mm) and type of reinforcement (GFRP sand – coated and steel bars). Although the GFRP bars indicated good bond behaviour to concrete, the average bond strength was slightly lower than that of steel reinforcement of 16mm and 18 mm, while it was higher for the GFRP bars of 12mm diameter.

Słowa kluczowe

EN

beam; bond test; failure; GFRP; steel; reinforcement; shear stress; slip

PL

badanie przyczepności; belka; uszkodzenie; GFRP; stal; wzmocnienie; naprężenie ścinające; poślizg

• Wydawca: Komitet Inżynierii Lądowej i Wodnej PAN ; Politechnika Warszawska, Wydział Inżynierii Lądowej
• Czasopismo: Archives of Civil Engineering
• Rocznik: 2018
• Tom: Vol. 64, nr 4/II
• Strony: 243--256
• Opis fizyczny: Bibliogr. 13 poz., il., tab.

Twórcy

autor

Szczech D.

• Lodz University of Technology, Faculty of Civil Engineering, Architecture and Environmental Engineering, Łódź, Poland

autor

Kotynia R.

• Lodz University of Technology, Faculty of Civil Engineering, Architecture and Environmental Engineering, Łódź, Poland

Bibliografia

• 1. AL-Mahmoud F, Castel A, Francois R, Tourneur C. “Effect of surface preconditioning on bond of carbon fibre reinforced polymer rods to concrete”. Cement & Concrete Composites 2007;29(9):677-89.
• 2. Baena M, Torres L, Turon A, Barris C. “Experimental study of bond behaviour between concrete and FRP bars using a pull-out test”. Composites: Part B 2009;40(8):784-97.
• 3. Fei Yan, Zhibin Lin, Mijia Yang. “Bond mechanism and bond strength of GFRP bars to concrete: A review”. Composites Part B 98 (2016) 56-69.
• 4. Hao Q, Wang Y, He Z, Ou J. “Bond strength of glass fibre reinforced polymer ribbed rebars in normal strength concrete”. Construction Build Mater 2009;23(2):865-71.
• 5. H. Mazaheripour, J.A.O. Barros, J.M. Sena-Cruz, M. Pepe, E. Martinelli. “Experimental study on bond performance of GFRP bars in self-compacting steel fibre reinforced concrete”. Composite Structure, 95 (2013), 202-212.
• 6. Won Jong-Pil, Chan-Gi Park, Hwang-Hee Kim, Sang-Woo Lee, Chang-Il Jang. “Effect of fibres on the bonds between FRP reinforcing bars and high-strength concrete”. Composites Part B: Engineering, Volume 39, Issue 5, July 2008, Pages 747-755.
• 7. Kotynia, R., Szczech, D., Kaszubska, M. “Bond behaviour of GRFP bars to concrete in beam test”. Procedia Engineering 2017, (193), 401-408.
• 8. Lee JY, Kim TY, Kim TJ, Yi CK, Park JS, et al. „Interfacial bond strength of glass fibre reinforced polymer bars in high-strength concrete”. Composites: Part B 2008;39(2):258-70.
• 9. Pecce M, Manfredi G, Realfonzo R, Cosenza E. “Experimental and analytical evaluation of bond properties of GFRP bars”. Journal of Materials in Civil Engineering 2001;13(4):282-90.
• 10. PN-EN 10080:2007. Steel for the reinforcement of concrete. Wieldable reinforcing steel. General
• 11. RILEM. “Bond test for reinforcement steel 2. Pullout test”. Recommendation RC6, 1983.
• 12. Okelo R. “Realistic Bond Strength of FRP Rebars in NSC from Beam Specimens”. Journal of Aerospace Engineering, Volume 20 Issue 3 - July 2007.
• 13. Tighiouart B, Benmokrane B, Gao D. “Investigation of bond in concrete member with fibre reinforced polymer (FRP) bars”. Construction and Building Materials. 1998;12(8):453-62.

Uwagi

Opracowanie rekordu w ramach umowy 509/P-DUN/2018 ze środków MNiSW przeznaczonych na działalność upowszechniającą naukę (2019).