- Author
-
Kodur, V. K. R.
|
Bisby, L. A.
|
Green, M. F.
- Title
- Fire Endurance of FRP-Strengthened Reinforced Concrete Columns.
- Coporate
- National Research Council of Canada, Ottawa, Ontario
- Report
-
NRCC-46633,
- Book or Conf
- Concrete Under SevereConditions, 4th International Conference. Proceedings. June 27-30, 2004,
Seoul, Korea,
872-881 p.,
2004
- Keywords
-
reinforced concrete
|
columns
|
concrete columns
|
fire endurance
|
structural members
|
fire tests
|
concretes
|
temperature
|
deformation
|
fire protection
- Identifiers
- fibre-reinforced polymer (FRP) materials; FRP-strengthened columns in fire; summary of test parameters and results; batch quantities and properties of concrete mix; variation in axial deformations
- Abstract
- In buildings, fire represents one of the most severe environmental conditions and should thus be properly accounted for in the design of structural members. In recent years, there has been an increase in the use of fibre-reinforced polymer (FRP) materials for reinforcement and strengthening of concrete structures in buildings, and this has raised concerns regarding the behaviour of such FRP systems in fire. There is currently very little information available on the fire endurance of FRP-reinforced or strengthened concrete systems. This paper presents results from full-scale fire resistance experiments on two FRP-strengthened (wrapped) reinforced concrete (RC) columns. A comparison is made between the fire performances of FRP-strengthened RC columns and a conventional unstrengthened RC column tested previously. Data obtained during the experiments is used to show that the fire behaviour of FRP-wrapped concrete columns, using an appropriate fire protection system, is as good as that of unstrengthened RC columns. The critical factors that influence the fire endurance of FRP-reinforced concrete columns, namely the fire protection system, FRP wrapping, loading, and type of aggregate in the concrete, are discussed. It is demonstrated that satisfactory fire resistance ratings for FRP-wrapped concrete columns can be obtained by properly incorporating appropriate fire protection measures into the overall structural system.