- Author
- Bisby, L. A. | Kodur, V. K. R. | Green, M. F.
- Title
- Performance in Fire of FRP-Confined Reinforced Concrete Columns.
- Coporate
- National Research Council of Canada, Ottawa, Ontario
- Report
- NRCC-46966
- Book or Conf
- Advanced Composite Materials, 4th International Conference. Proceedings. July-20-23, 2004, Alberta, Canada, 1-8 p., 2004
- Keywords
- reinforced concrete | concrete columns | fire endurance | insulation | fire tests | het transfer | temperature | load capacity
- Identifiers
- fibre reinforced polymers (FRPs); specimen details and FRP wrapping/insulation; specimen dimensions, reinforcement details, and material properties; FRP wrap and insulation details used in the experimental program
- Abstract
- Over the past decade, research has shown that fibre reinforced polymers (FRPs) can be efficiently, economically, and safely be used for strengthening and rehabilitation of reinforced concrete (RC) structures. However, relatively little is known about the behaviour of FRP materials at high temperature, and this is a primary factor limiting the widespread application FRP materials in buildings, parking garages, and industrial structures. This paper presents the results of a numerical and experimental program to investigate the fire performance of FRP-wrapped (confined) RC columns. The primary objectives of this research project were: to experimentally investigate the behaviour in fire of FRP-wrapped and insulated RC columns; to develop numerical models to simulate the behaviour in fire of these members; to investigate techniques to improve their behaviour in fire; and to use data from experimental and numerical studies to provide fire-design guidance. Experimental data are presented from full-scale fire endurance tests conducted on three FRP-wrapped RC columns at the National Research Council of Canada (NRC). A numerical model is presented, which is capable of predicting the thermal and structural response of an FRP-wrapped concrete column under exposure to a standard fire. The model is shown to adequately predict the observed response of FRP-wrapped columns in fire. It is demonstrated that, while currently available FRPs are sensitive to the effects of elevated temperatures, appropriately designed and insulated FRP-wrapped RC columns are capable of achieving satisfactory fire endurances.