Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Experimental and numerical study on the crack width and deflection performance of GFRP reinforced concrete beams
Highlights A detailed discussion is provided on the cracking behaviour of ribbed GFRP-RC beams with different parameters. A discussion is provided on the deflection performance of GFRP-RC beams performance with different parameters. The kb values recommended by ACI 440.1R-15 (2015) and CSA S806-12 (2012) for ribbed GFRP bars are evaluated based on the experimental results. A numerical parametric study is performed using ATENA 3D software, and the ACI 440.1R-15 (2015) and CSA S806-12 (2012) deflection equations are evaluated.
Abstract The design of glass fiber-reinforced polymer (GFRP) reinforced concrete (RC) members is often governed by the crack width and deflection serviceability limits due to the low elastic modulus of GFRP material compared to steel. The available formulations in the current standards and guidelines control the crack widths of the GFRP-RC elements by considering the bond interaction between the GFRP reinforcement and surrounding concrete through bond-dependent coefficient, kb. This study investigates the effect of different parameters, including the concrete compressive strength, clear concrete cover to GFRP reinforcement, and the number of GFRP reinforcement layers on the moment capacity, cracking progression, deflection behavior, and the variation of kb values at different crack widths. The study involves experimentally testing 11 full-scale GFRP-RC beams. Moreover, a numerical parametric model was developed to investigate the effect of varying the concrete strength on the deflection performance of the GFRP-RC beams. The experimental results provided insights into how the investigated parameters impact the crack width and deflection values at the service stage. Moreover, the numerical model simulated the experimental behavior of the beams with high accuracy. It was also found that the ACI 440.1R-15 deflection formulation underestimates the deflection values at the service stage, particularly at high concrete strengths.
Experimental and numerical study on the crack width and deflection performance of GFRP reinforced concrete beams
Highlights A detailed discussion is provided on the cracking behaviour of ribbed GFRP-RC beams with different parameters. A discussion is provided on the deflection performance of GFRP-RC beams performance with different parameters. The kb values recommended by ACI 440.1R-15 (2015) and CSA S806-12 (2012) for ribbed GFRP bars are evaluated based on the experimental results. A numerical parametric study is performed using ATENA 3D software, and the ACI 440.1R-15 (2015) and CSA S806-12 (2012) deflection equations are evaluated.
Abstract The design of glass fiber-reinforced polymer (GFRP) reinforced concrete (RC) members is often governed by the crack width and deflection serviceability limits due to the low elastic modulus of GFRP material compared to steel. The available formulations in the current standards and guidelines control the crack widths of the GFRP-RC elements by considering the bond interaction between the GFRP reinforcement and surrounding concrete through bond-dependent coefficient, kb. This study investigates the effect of different parameters, including the concrete compressive strength, clear concrete cover to GFRP reinforcement, and the number of GFRP reinforcement layers on the moment capacity, cracking progression, deflection behavior, and the variation of kb values at different crack widths. The study involves experimentally testing 11 full-scale GFRP-RC beams. Moreover, a numerical parametric model was developed to investigate the effect of varying the concrete strength on the deflection performance of the GFRP-RC beams. The experimental results provided insights into how the investigated parameters impact the crack width and deflection values at the service stage. Moreover, the numerical model simulated the experimental behavior of the beams with high accuracy. It was also found that the ACI 440.1R-15 deflection formulation underestimates the deflection values at the service stage, particularly at high concrete strengths.
Experimental and numerical study on the crack width and deflection performance of GFRP reinforced concrete beams
Gouda, Omar (Autor:in) / Hassanein, Ahmed (Autor:in) / Galal, Khaled (Autor:in)
Engineering Structures ; 283
26.01.2023
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
Reliability assessment on maximum crack width of GFRP-reinforced concrete beams
| British Library Conference Proceedings | 2008
Reliability assessment on maximum crack width of GFRP-reinforced concrete beams
| British Library Conference Proceedings | 2008
| British Library Conference Proceedings | 1999