Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Bond performance of carbon fiber reinforced polymer rebars in ultra-high-performance concrete
https://orcid.org/0000-0001-8111-2984
https://orcid.org/0000-0001-5438-065X
https://orcid.org/0000-0003-2847-0699
Highlights Proposed the formulae for calculating the ultimate bond strength and development length of CFRP bars in UHPC that integrated the effects of CFRP bar diameter, bonded length, and cover thickness. Proposed bond-slip constitutive model to simulate the bond-slip behavior of CFRP bars in UHPCs with good agreement to test results. Discussed the failure modes and residual section with periodic fluctuations of CFRP bars in UHPC.
Abstract This paper investigated the bond performance between carbon fiber reinforced polymer (CFRP) bars and ultra-high-performance concrete (UHPC) by a hinged beam test investigation. A total of 11 sets of beam tests were carried out to investigate the effect of different parameters on the bond performance, including steel fiber volume fraction, bonded length, reinforcement diameter, and concrete cover. The tests showed that the bond damage modes between CFRP bars and UHPC were dominated by pull-out damage, with the surface of the bonded section of CFRP bars being peeled off from the internal core and no damage observed in the UHPCs. An increase in the cover and steel fiber volume fraction improves the bonding performance, while an increase in diameter reduces the bond performance. Based on this study, the formulae for calculating the ultimate bond strength and development length that integrated the effects of CFRP bar diameter, bonded length, and cover thickness were proposed. The bond-slip curve shows three stages, i.e., ascending section, descending section, and a residual section showing periodic fluctuations. The fluctuation period showed a certain degree of linear correlation with the rib spacing of CFRP bars. Based on the characteristics of tested curves, a bond-slip constitutive model was proposed to simulate the bond-slip behavior of CFRP bars in UHPCs with good agreement to test results.
Bond performance of carbon fiber reinforced polymer rebars in ultra-high-performance concrete
https://orcid.org/0000-0001-8111-2984
https://orcid.org/0000-0001-5438-065X
https://orcid.org/0000-0003-2847-0699
Highlights Proposed the formulae for calculating the ultimate bond strength and development length of CFRP bars in UHPC that integrated the effects of CFRP bar diameter, bonded length, and cover thickness. Proposed bond-slip constitutive model to simulate the bond-slip behavior of CFRP bars in UHPCs with good agreement to test results. Discussed the failure modes and residual section with periodic fluctuations of CFRP bars in UHPC.
Abstract This paper investigated the bond performance between carbon fiber reinforced polymer (CFRP) bars and ultra-high-performance concrete (UHPC) by a hinged beam test investigation. A total of 11 sets of beam tests were carried out to investigate the effect of different parameters on the bond performance, including steel fiber volume fraction, bonded length, reinforcement diameter, and concrete cover. The tests showed that the bond damage modes between CFRP bars and UHPC were dominated by pull-out damage, with the surface of the bonded section of CFRP bars being peeled off from the internal core and no damage observed in the UHPCs. An increase in the cover and steel fiber volume fraction improves the bonding performance, while an increase in diameter reduces the bond performance. Based on this study, the formulae for calculating the ultimate bond strength and development length that integrated the effects of CFRP bar diameter, bonded length, and cover thickness were proposed. The bond-slip curve shows three stages, i.e., ascending section, descending section, and a residual section showing periodic fluctuations. The fluctuation period showed a certain degree of linear correlation with the rib spacing of CFRP bars. Based on the characteristics of tested curves, a bond-slip constitutive model was proposed to simulate the bond-slip behavior of CFRP bars in UHPCs with good agreement to test results.
Bond performance of carbon fiber reinforced polymer rebars in ultra-high-performance concrete
https://orcid.org/0000-0001-8111-2984
https://orcid.org/0000-0001-5438-065X
https://orcid.org/0000-0003-2847-0699
Highlights Proposed the formulae for calculating the ultimate bond strength and development length of CFRP bars in UHPC that integrated the effects of CFRP bar diameter, bonded length, and cover thickness. Proposed bond-slip constitutive model to simulate the bond-slip behavior of CFRP bars in UHPCs with good agreement to test results. Discussed the failure modes and residual section with periodic fluctuations of CFRP bars in UHPC.
Abstract This paper investigated the bond performance between carbon fiber reinforced polymer (CFRP) bars and ultra-high-performance concrete (UHPC) by a hinged beam test investigation. A total of 11 sets of beam tests were carried out to investigate the effect of different parameters on the bond performance, including steel fiber volume fraction, bonded length, reinforcement diameter, and concrete cover. The tests showed that the bond damage modes between CFRP bars and UHPC were dominated by pull-out damage, with the surface of the bonded section of CFRP bars being peeled off from the internal core and no damage observed in the UHPCs. An increase in the cover and steel fiber volume fraction improves the bonding performance, while an increase in diameter reduces the bond performance. Based on this study, the formulae for calculating the ultimate bond strength and development length that integrated the effects of CFRP bar diameter, bonded length, and cover thickness were proposed. The bond-slip curve shows three stages, i.e., ascending section, descending section, and a residual section showing periodic fluctuations. The fluctuation period showed a certain degree of linear correlation with the rib spacing of CFRP bars. Based on the characteristics of tested curves, a bond-slip constitutive model was proposed to simulate the bond-slip behavior of CFRP bars in UHPCs with good agreement to test results.
Bond performance of carbon fiber reinforced polymer rebars in ultra-high-performance concrete
Zhu, Haitang (Autor:in) / He, Yunjian (Autor:in) / Cai, Gaochuang (Autor:in) / Cheng, Shengzhao (Autor:in) / Zhang, Yin (Autor:in) / Si Larbi, Amir (Autor:in)
01.05.2023
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
Bond Strength of Fiber Reinforced Polymer Rebars in Normal Strength Concrete
| Online Contents | 2005
Performance of Thermoplastic Fiber Reinforced Polymer Rebars
| British Library Conference Proceedings | 2003
Bond Performance Evaluation of Deformed Rebars in Ultra-High Performance Concrete (UHPC)
| Springer Verlag | 2023
Bond Strength of Fiber Reinforced Polymer Rebars in Normal Strength Concrete
| British Library Online Contents | 2005