Advances in Durability Performance and Service-life Prediction of Innovative Fibre-Reinforced Polymer (FRP) Bars

创新纤维增强聚合物 (FRP) 棒的耐久性能和使用寿命预测方面的进展

• 批准号: RGPIN-2015-06242
• 负责人: Benmokrane, Brahim
• 金额: $ 3.93万
• 依托单位: Université de Sherbrooke
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2017
• 资助国家: 加拿大
• 起止时间: 2017-01-01 至 2018-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=636121
• 关键词: Advances; Durability; Performance; Service; life

Corrosion of steel reinforcement in concrete infrastructure is a major durability problem, leading to structural degradation and consequent costly repairs and loss of serviceability. According to the 2012 Canadian Infrastructure Report Card, a significant amount of Canadian municipal infrastructure ranks between "fair" and "very poor" (about 35%, on average). Replacing these assets nationally would alone total $171.8 billion. A relatively recent solution receiving global attention is fibre-reinforced-polymer (FRP) reinforcing bars as a cost-effective alternative to conventional steel bars. Given their corrosion resistance, light weight, and high strength, FRP bars have been used in Canada for the last 20 years for infrastructure such bridge decks, parking garages, and continuous pavements. The lack of appropriate data about the long-term durability poses a major obstacle to broader acceptance and mass implementation of FRP bars.

混凝土基础设施中钢筋的腐蚀是一个主要的耐久性问题，导致结构退化以及随之而来的昂贵的维修和可用性丧失。根据 2012 年加拿大基础设施报告卡，加拿大大量市政基础设施的排名介于“一般”和“非常差”之间（平均约 35%）。仅在全国范围内更换这些资产就总计 1,718 亿美元。纤维增强聚合物 (FRP) 钢筋是一种相对较新的解决方案，受到全球关注，作为传统钢筋的经济高效替代品。由于 FRP 筋耐腐蚀、重量轻、强度高，过去 20 年加拿大一直将 FRP 筋用于桥面、停车场和连续路面等基础设施。缺乏有关长期耐久性的适当数据对 FRP 筋的更广泛接受和大规模应用构成了主要障碍。