Fire Resistance of pultruded profiles of glass fiber reinforced polymer (GFRP) for rehabilitation applications: Experimental, numeric, and analytical study
Abstract
Fire Resistance of pultruded profiles of glass fiber reinforced polymer (GFRP) for rehabilitation applications: Experimental, numeric, and analytical study
ABSTRACT
This article presents a study on the fire resistance of beams manufactured with pultruded profiles of glass fiber reinforced polymer (GFRP). Fire resistance tests were done on beams with a span of 1.3 m, exposed to the action of fire and according to the standard ISO 834. In these tests, the effect of different types of exposure to fire and the degrees of loads applied, as well as the efficiency of different protection systems were evaluated. A numeric model in the ANSYS FLUENT software was developed to simulate the evolution of the ranges of temperatures in the cross-section, as well as an analytical model to determine the evolution of deformation on the beams.
Keywords:Â composite materials; resistance to fire; experimental campaign; numeric simulation; analytical model.
Resistencia al fuego de perfiles pultruÃdos de polÃmero reforzado con fibras de vidrio (GFRP) para aplicaciones en rehabilitación: Estudio experimental, numérico y analÃtico
RESUMEN
El presente artÃculo presenta un estudio sobre la resistencia al fuego de vigas fabricadas con perfiles pultrusionados de polÃmero reforzado con fibra de vidrio (GFRP). Se realizaron ensayos de resistencia al fuego en vigas con un vano de 1.3 m, expuestas a la acción del fuego según la norma ISO 834. En estos ensayos, se evaluó el efecto de diferentes tipos de exposición al fuego y los niveles de carga aplicados, asà como la eficacia de diferentes sistemas de protección. Se desarrolló un modelo numérico en el software ANSYS FLUENT para simular la evolución del campo de temperaturas en la sección transversal y un modelo analÃtico para determinar la evolución de la deformación de las vigas.
Palabras clave: materiales compuestos, resistencia al fuego, campaña experimental, simulación numérica, modelo analÃtico.
Â
Resistência ao fogo de perfis pultrudidos de polÃmero reforçado com fibras de vidro (GFRP) para aplicações em reabilitação: Estudo experimental, numérico e analÃtico
RESUMO
Neste artigo é apresentado um estudo sobre a resistência ao fogo de vigas em perfis pultrudidos de polÃmero reforçado com fibras de vidro (GFRP). Foram realizados ensaios de resistência ao fogo em vigas com um vão de 1.3 m, expostas ao fogo de acordo com a curva temperatura-tempo da norma ISO 834. Nestes ensaios, avaliou-se o efeito de diferentes tipos de exposição ao fogo (em uma e três faces) e nÃveis de carga aplicados, bem como a eficácia de diferentes sistemas de proteção. Foi desenvolvido um modelo numérico térmico bidimensional no software ANSYS FLUENT para simular a evolução das distribuições de temperatura na secção transversal. Foi ainda desenvolvido um modelo analÃtico para determinar a evolução das deformações das vigas.
Palavras-chave: Materiais compósitos, resistência ao fogo, campanha experimental, simulação numérica, modelo analÃtico.
Downloads
References
Correia, J. R. (2012), “Materiais compósitos de matriz poliméricaâ€, em Ciência e Engenharia dos Materiais de Construção, IST Press, Lisboa.
Correia, J. R. (2004), “Perfis pultrudidos de polÃmero reforçado com fibras de vidro (GFRP). Aplicação de vigas mistas GFRP betão na construçãoâ€, Dissertação de Mestrado em Construção, Instituto Superior Técnico, Universidade Técnica de Lisboa.
Samanta, A. et al. (2004), “Thermo mechanical assessment of polymer composites subjected to fireâ€, The Robert Gordon University, Aberdeen.
Mouritz, A. P., Gibson, A. G. (2006), “Fire properties of polymer composite materialsâ€, Springer, Dordrecht.
Correia, J. R. et al. (2013), “Mechanical behaviour of pultruded glass fibre reinforced polymer composites at elevated temperature: Experiments and model assessmentâ€, Composites Structures, V. 98, pp. 303-313.
Ludwig, C. et al. (2008), “Thermal and Thermo mechanical Investigation of Polyester based Composite Beamsâ€, Fouth International Conference on FRP Composites in Civil Engineering, Zurich.
Correia, J. R. et al. (2010), “Fire protection system for building floors made of pultruded GFRP profiles. Part 1: Experimental investigationsâ€, Composites: Part B, V. 41, pp. 617-629.
ISO 834-1 (1999), “Fire resistance tests. Elements of building construction - Part 1: General requirementsâ€, International Standards Organization, Genève.
Software comercial ANSYS FLUENT, ANSYS, inc, versão 14.2, (2012).
Morgado, T. et al. (2013), “Comportamento ao fogo de vigas de compósito de GFRPâ€, Revista Internacional Construlink, n.º 32, pp. 4-19. Website, http://www.engineeringtoolbox.com/dry-air-properties-d_973.html, (2015).
Bai, Y., Vallé, T., Keller, T. (2007), “Modeling of thermos physical properties for FRP composites under elevated and high temperatureâ€, Composites Science and Technology, V. 67, pp. 3098-3109.
Bank, L. C. (2006), “Composites for construction: Structural design with FRP materialsâ€, Wiley, Hoboken.
Mouritz, A. (2003), “Simple models for determining the mechanical properties of burnt FRP compositesâ€, Materials and Engineering, V. 359, pp. 237-246.
_______________________________
License in effect from September 2020
You are free to:
- Share — copy and redistribute the material in any medium or format for any purpose, even commercially.
- Adapt — remix, transform, and build upon the material for any purpose, even commercially.
- The licensor cannot revoke these freedoms as long as you follow the license terms.
Under the following terms:
- Attribution — You must give appropriate credit , provide a link to the license, and indicate if changes were made . You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use.
- No additional restrictions — You may not apply legal terms or technological measures that legally restrict others from doing anything the license permits.
Notices:
You do not have to comply with the license for elements of the material in the public domain or where your use is permitted by an applicable exception or limitation .
No warranties are given. The license may not give you all of the permissions necessary for your intended use. For example, other rights such as publicity, privacy, or moral rights may limit how you use the material.
.png)
