Performance of fire-damaged concrete beams strengthened with NSM laminates embedded in cement-based and epoxy adhesives

This thesis is concerned with the suitability and effectiveness of the CFRP NSM laminate strengthening system to repair concrete after exposure to high temperature. The thesis begins with the assessment of the mechanical properties of concrete at various temperature exposure levels. The study is then extended to prisms damaged by heating and subsequently repaired with NSM CFRP strips using epoxy and cement-based adhesive. The main purpose is to investigate the effect of high temperature on the flexural behaviour of beams, and repair of RC beams damaged by elevated temperature using NSM CFRP embedded with a bonding agent. Based on experimental results of specimens damaged by heating and subsequently repaired with CFRP laminates using epoxy and cement-based adhesives, finite element models (FEAs) were developed, using ATENA-GiD software to simulate the behavior of both unheated and heat-damaged RC beams strengthened with NSM laminates embedded in epoxy and cement-based adhesives.