Behaviour of CFRP strengthened concrete slab at elevated temperature

Abstract

The use of Carbon Fiber Reinforced Polymers (CFRP) for concrete structures is becoming worldwide trend as an alternative to the use of conventional materials. Although there is an enormous structural potential to use the CFRP strengthened concrete in high rise building projects and industrial structures, majority of applications are limited only in bridges. The main reason is due to the lack of information related with the fire resistance of strengthened members. However, it is the prime importance to establish the adequacy of fire endurance and the structural integrity of the members prior to further implementing CFRP composite materials in buildings. Studies are carried out regarding the behavior of insulated and non-insulated CFRP/concrete members exposed to high temperature. Finite element analysis was used for the heat transfer analysis and simulations are done with the aid of commercially available software (ANSYS). This paper presents the thermal behavior of CFRP/concrete subjected to the transient heat condition and analysis on the bond performance under standard fire condition.