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Analytical bond model for GFRP bars to steel fiber reinforced self-compacting concrete
The objective of this study is to present a computational algorithm to analytically evaluate the bond behavior between glass fiber reinforced polymer (GFRP) bar and steel fiber reinforced self-compacting concrete (SFRSCC). The type of information to be derived is appropriate to study the flexural behavior of SFRSCC beams reinforced with GFRP bars in terms of serviceability limit states requirements; in fact, the bond between bars and surrounding concrete influences significantly the crack width and crack spacing. The proposed bond model was established by calibrating the parameters of a multilinear bond-slip constitutive law using the experimental results of pullout bending tests carried out by the authors, taking into account the experimental pullout force versus slip at loaded and free ends. According to the comparison between theoretical and experimental pullout force-slip, an acceptable accuracy of the model was observed. Additionally, by considering the proposed bond-slip relationship, a parametric study was earned out to evaluate the influence of the involved bond-slip law's parameters on the maximum force transferred to the surrounding concrete. Finally, the development length of two GFRP bars utilized in the experiments (deformed and smooth bars) was determined by means of the proposed model, and it was compared with the values recommended by codes.
Analytical bond model for GFRP bars to steel fiber reinforced self-compacting concrete
The objective of this study is to present a computational algorithm to analytically evaluate the bond behavior between glass fiber reinforced polymer (GFRP) bar and steel fiber reinforced self-compacting concrete (SFRSCC). The type of information to be derived is appropriate to study the flexural behavior of SFRSCC beams reinforced with GFRP bars in terms of serviceability limit states requirements; in fact, the bond between bars and surrounding concrete influences significantly the crack width and crack spacing. The proposed bond model was established by calibrating the parameters of a multilinear bond-slip constitutive law using the experimental results of pullout bending tests carried out by the authors, taking into account the experimental pullout force versus slip at loaded and free ends. According to the comparison between theoretical and experimental pullout force-slip, an acceptable accuracy of the model was observed. Additionally, by considering the proposed bond-slip relationship, a parametric study was earned out to evaluate the influence of the involved bond-slip law's parameters on the maximum force transferred to the surrounding concrete. Finally, the development length of two GFRP bars utilized in the experiments (deformed and smooth bars) was determined by means of the proposed model, and it was compared with the values recommended by codes.
Analytical bond model for GFRP bars to steel fiber reinforced self-compacting concrete
Mazaheripour, H. (author) / Barros, J.A.O. (author) / Sena-Cruz, J. (author) / Soltanzadeh, F. (author)
Journal of Composites for Construction ; 17 ; 04013009/1-04013009/16
2013
16 Seiten, 17 Bilder, 3 Tabellen, 30 Quellen
Article (Journal)
English
Analytical Bond Model for GFRP Bars to Steel Fiber Reinforced Self-Compacting Concrete
| Online Contents | 2013
Analytical bond model for GFRP bars to steel fiber reinforced self-compacting concrete
| BASE | 2013
Analytical Bond Model for GFRP Bars to Steel Fiber Reinforced Self-Compacting Concrete
| British Library Online Contents | 2013
| BASE | 2013