Abstract:
CFRP (Carbon Fibre Reinforce Polymer) strengthening system has recently emerged as a practical alternative for the flexural strengthening of reinforced concrete structures because of its
efficiency in terms of structural performances, costs, labour and time savings. While CFRP is widely
used in bridge construction, it can also be taken advantage of for strengthening concrete members
such as beams, columns and slabs. Even though structural engineers are interested in using CFRP for
the strengthening work of concrete members in buildings, always hesitation occurs due to lack of
knowledge of its fire performance. Therefore it is essential to assess and develop the needed
information on fire resistance of CFRP strengthened concrete structural members. The epoxy adhesive
used to create the bond is known to be very sensitive totemperature and its mechanical properties
deteriorate rapidly with exposure toelevated temperature. The CFRP sheet or plate itself cannot
provide sufficient insulation to the composite system. Therefore, application of a suitable insulation
onto the CFRP sheet is important, especially in the application to buildings.In this study the behaviour
of insulated CFRP/concrete members subjected to standard fire condition is explored. A finite element
model, developed by using commercially available software ANSYS was used to simulate the thermal
behaviour of the insulated composite structure.
Citation:
Ranasinghe, R.A.T.M., Jinadasa, D.V.L.R., Srilal, H.P.S., & Gamage, J.C.P.H. (2011). Bond performance of CFRP strengthened concrete subjected to fire. In N. Ratnayake (Ed.), Proceedings of the Civil Engineering Research for Industry Symposium 2011 (pp. 37-41). Department of Civil Engineering, University of Moratuwa.