Accelerate Alliance Investigation of Fire Performance of Concrete Beams Strengthened with FRCM

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Reinforced concrete (RC) is widely used due to its ease of construction, accessibility of raw materials, andexcellent integrity. However, severe breakdown of RC structures due to mechanical and environmental loadsmay result in the need for strengthening to increase functionality and extend the service life of such structures.The use of fibre-reinforced polymer (FRP) composites with external bonding (EB) through epoxy adhesive is afast, effective, and reliable solution to increase flexural or shear strength. In recent years, fabric-reinforcedcementitious matrix (FRCM) strengthening systems have emerged as a viable alternative to FRP sheets forrehabilitating reinforced concrete structures. FRCM systems present almost all of the same benefits as FRPwhile overcoming the compromised fire resistance of FRP. While the fire performance of FRCM strengtheningsystems is widely viewed as superior to that of FRP composites, very few published works are available in theliterature to quantify this performance. These studies have not reached high temperatures that can beexperienced during a fire because the actual fire tests were not conducted. Also, the post-fire strength of theFRCM-strengthened beams has not been studied. The data from standard fire tests are essential for developingdesign guidance. This research, therefore, aims to conduct a comprehensive study on the mechanicalperformance of fabric-reinforced cementitious matrix (FRCM) under fire.