Concrete Beams Reinforced with GFRP Plates

Abstract:

This is the presentation of the research carried out by the Faculty of Engineering at Universidad Nacional de Rosario on the use of pultruded Glass Fiber Reinforced Polymer (GFRP) plates to increase the flexural strength of reinforced concrete beams.Pultruded plates are the type of elements made of composite materials which are most widely used for this kind of strengthening. Although around the world the material used for these plates is carbon fibers, its high cost prevents its widespread use in our country.One of the aims of our research program is, precisely, to verify whether it is possible to substitute such plates for significantly cheaper glass fiber elements manufactured in Argentina. The test results have proved that this alternative is feasible.What's more, the greater thickness of the glass fiber plates allows the use of additional anchor bolts. These bolts provide the system with post-critical resistance and ductility-characteristics which are absolutely necessary, for example, in structures in seismic areas.

• Periodical: Key Engineering Materials (Volume 747)
• Pages: 220-225
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.747.220
• Online since: July 2017
• Authors: Alberto Pedro Busnelli*, Ruben Edgardo López, Jorge Carlos Adue
• Keywords: Flexural Strengthening, Glass Fibers, Pultruded Plates

References

[1] R. Aguiar, A. Busnelli, P. Caiza, A. Haro, R. Seracino, M. Tornello, J.C. Vielma (2014) - Ponencias II Curso Internacional Avanzado de FRP.

[2] Busnelli, R. López, M. del Río (2014) - Refuerzo de vigas de hormigón armado con láminas de PRFV" – 23º Jornadas de Ingeniería Estructural.

DOI: 10.23878/alternativas.v17i3.210

[3] A.J. Lamanna, L.C. Bank, D.T. Borowicz, D. Arora (2003) - Strengthening of concrete beams with mechanically fastened frp strips – University of Wisconsin, Madison USA.

[4] M.B. Leeming, J.J. Darby - (1998) - Design and specifications for FRP plate bonding of beams.

[5] M. Molina, J. Gutiérrez, C. López (2008) - Consideraciones acerca del empleo de láminas de fibras de carbono aplicadas al campo de las estructuras.

[6] D.J. Ohelers, M.S. Mohamed Ali, M. Haskett, M.C. Griffith (2008) A partial-interaction ductility model for FRP plated RC flexural members.

[7] S. Visintini, A. Busnelli (Director) (2013) - Refuerzo de vigas de hormigón armado con materiales compuestos adheridos exteriormente" - Proyecto Final – Fac. Cs. Exactas, Ingeniería y Agrimensura, U.N. R.

DOI: 10.3926/oms.203

[8] A. Wei, H. Saadatmanesh, M.R. Ehsani (1994) - RC Beams strengthened with FRP plates.