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

加速 FRCM 加固混凝土梁防火性能联盟调查

• 批准号: 572234-2022
• 负责人: Hajiloo, HamzehH
• 金额: $ 1.53万
• 依托单位: Carleton University
• 依托单位国家: 加拿大
• 项目类别: Alliance Grants
• 财政年份: 2022
• 资助国家: 加拿大
• 起止时间: 2022-01-01 至 2023-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=748944
• 关键词: Accelerate; Alliance; Investigation; Fire; Performance

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.

钢筋混凝土（RC）由于其易于构造，原材料的可访问性和外观完整性而被广泛使用。然而，由于机械和环境负荷而导致的RC结构严重破坏导致需要增强功能并延长此类结构的使用寿命。使用纤维增强的聚合物（FRP）复合材料（通过外部键合（EB））通过环氧粘合剂（EB）使用环氧粘合剂是AFAST，有效的，有效或可靠的解决方案，可实现柔韧性或固定强度。近年来，织物增强型矩阵（FRCM）加强系统已成为供FRP板的可行替代方案，用于豪华的钢筋混凝土结构。 FRCM系统几乎具有与FRP克服FRP的耐火性抗性的所有相同好处。尽管FRCM强化系统的火力性能被广泛认为优于FRP复合材料的火灾，但很少有发表的作品可以在统一性中量化这种性能。这些研究尚未达到在火灾中可以经验丰富的高温，因为实际的火灾测试没有进行。同样，尚未研究FRCM强度的射线后强度。来自标准火灾测试的数据对于开发设计指导至关重要。因此，这项研究旨在就火势强化织物强化胶结矩阵（FRCM）的机械性能进行全面研究。