TY - GEN
T1 - Analyses on the bond transfer between FRP composites and other structural materials
AU - Biscaia, Hugo
AU - Chastre, Carlos
AU - Cardoso, João
AU - Franco, Noel
N1 - Funding Information:
The authors gratefully acknowledge the partial financial support provided by the Portuguese Foundation for Science and Technology (FCT) through the strategic project PEst-OE/EME/UI0667/2014. The first author would like to express also his gratitude for the research grant SFRH/BPD/111787/2015.
Publisher Copyright:
© 2019 9th International Conference on Fibre-Reinforced Polymer (FRP) Composites in Civil Engineering, CICE 2018. All Rights Reserved.
PY - 2018
Y1 - 2018
N2 - Fibre Reinforced Polymer (FRP) can be used as a strengthening material in several types of structures built with different materials, such as concrete, timber, steel, aluminium or clay masonry. Contrary to fasteners, the bond technique currently used to connect the FRP composites to the substrate avoids stress concentrations. The knowledge on the performance of those bonded joints has been increasing but there are several issues not well understood yet. For instance, it is not clear which interfacial local bond-slip relationship should represent best each type of interface. Such knowledge could be important for distinguishing different bond behaviours that, along with the contribution on to the field of the numerical and/or analytical modelling, will certainly help to identify the main causes for such differences between them all. Furthermore, the case of bonded joints between FRP and masonry clay bricks is now starting their first steps and in this particular case, the actual knowledge needs to be improved in order to increase the heritage building life cycle. Likely to other bonded joints such as FRP/concrete, FRP/masonry joints have been tested under single/double-lap shear conditions as well. These two bonded joints share, at least, one common particularity: both develop cracks when submitted to tensile stresses. Therefore, it is expected that similar interfacial bond-slip relationships may be used in both circumstances. In bonded joints between FRP composites and steel or timber substrates, the cracking phenomenon doesn't arise. However, on FRP/timber interfaces, depending on the type of the timber used or depending on the orientation of the grains throughout the bonded area, the interfacial bond-slip relationship may change. The work herein reported presents a full comparison of bonded joints between FRP composites and other structural materials in which will be used different analytical approaches to model their debonding behaviours. All modelling is based on cohesive bond-slip relationships experimentally obtained from tests carried out by the authors or collected from the literature which have the purpose of locally induce a cohesive rupture within the adhesive.
AB - Fibre Reinforced Polymer (FRP) can be used as a strengthening material in several types of structures built with different materials, such as concrete, timber, steel, aluminium or clay masonry. Contrary to fasteners, the bond technique currently used to connect the FRP composites to the substrate avoids stress concentrations. The knowledge on the performance of those bonded joints has been increasing but there are several issues not well understood yet. For instance, it is not clear which interfacial local bond-slip relationship should represent best each type of interface. Such knowledge could be important for distinguishing different bond behaviours that, along with the contribution on to the field of the numerical and/or analytical modelling, will certainly help to identify the main causes for such differences between them all. Furthermore, the case of bonded joints between FRP and masonry clay bricks is now starting their first steps and in this particular case, the actual knowledge needs to be improved in order to increase the heritage building life cycle. Likely to other bonded joints such as FRP/concrete, FRP/masonry joints have been tested under single/double-lap shear conditions as well. These two bonded joints share, at least, one common particularity: both develop cracks when submitted to tensile stresses. Therefore, it is expected that similar interfacial bond-slip relationships may be used in both circumstances. In bonded joints between FRP composites and steel or timber substrates, the cracking phenomenon doesn't arise. However, on FRP/timber interfaces, depending on the type of the timber used or depending on the orientation of the grains throughout the bonded area, the interfacial bond-slip relationship may change. The work herein reported presents a full comparison of bonded joints between FRP composites and other structural materials in which will be used different analytical approaches to model their debonding behaviours. All modelling is based on cohesive bond-slip relationships experimentally obtained from tests carried out by the authors or collected from the literature which have the purpose of locally induce a cohesive rupture within the adhesive.
KW - Bond
KW - Closed-form solution
KW - Concrete
KW - FRP composites
KW - Masonry
KW - Modelling
KW - Steel
KW - Timber
UR - http://www.scopus.com/inward/record.url?scp=85077561470&partnerID=8YFLogxK
M3 - Conference contribution
AN - SCOPUS:85077561470
T3 - 9th International Conference on Fibre-Reinforced Polymer (FRP) Composites in Civil Engineering, CICE 2018
SP - 412
EP - 419
BT - 9th International Conference on Fibre-Reinforced Polymer (FRP) Composites in Civil Engineering, CICE 2018
A2 - Ferrier, Emmanuel
A2 - Benzarti, Karim
A2 - Caron, Jean-Francois
PB - International Institute for FRP in Construction (IIFC)
T2 - 9th International Conference on Fibre-Reinforced Polymer (FRP) Composites in Civil Engineering, CICE 2018
Y2 - 17 July 2018 through 19 July 2018
ER -