Concrete structure safety monitoring systems

混凝土结构安全监测系统

• 批准号: 533148-2018
• 负责人: Albert, Jacques
• 金额: $ 1.82万
• 依托单位: Carleton University
• 依托单位国家: 加拿大
• 项目类别: Engage Grants Program
• 财政年份: 2018
• 资助国家: 加拿大
• 起止时间: 2018-01-01 至 2019-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=643698
• 关键词: Concrete; structure; safety; monitoring; systems

Large infrastructures made of concrete are susceptible to degradation and eventual failure over long lifetimes of**exposure to moisture and salts, as evidenced by recent catastrophic events around the world. This project deals**with a novel approach to detect the onset of corrosion in the metal supports ("rebars") used in reinforced**concrete. The technology to be used is based on optical fibers embedded into concrete alongside rebars during**fabrication of bridges and other structures. These fibers will have sensing elements distributed along their**length for the detection of moisture ingress and of the corrosion of special coatings on the fiber. By detecting**the location of potential corrosion events very early, it will be possible to target problematic areas for further**analysis using more conventional structural testing methods. It is believed that the relatively low cost of the**sensing elements and fiber used, along with the possibility to interrogate the system remotely and only**intermittently (since the timescale of corrosion growth is very slow) will make this solution widely used in new**infrastructure built in Canada and the world, making such infrastructure "intelligent".

由混凝土制成的大型基础设施在长期暴露于湿气和盐的情况下容易退化并最终失效，最近世界各地的灾难性事件就是证明。该项目涉及一种新的方法来检测钢筋混凝土中使用的金属支撑（“钢筋”）的腐蚀开始。该技术是基于光纤嵌入混凝土旁边钢筋在桥梁和其他结构的制造过程中。这些光纤将有传感元件分布沿着其 ** 长度，用于检测水分进入和光纤上特殊涂层的腐蚀。通过尽早检测潜在腐蚀事件的位置，将有可能使用更传统的结构测试方法针对问题区域进行进一步分析。据信，所使用的 ** 传感元件和光纤的相对低的成本，沿着远程且仅 ** 间歇地询问系统的可能性（因为腐蚀增长的时间尺度非常缓慢），将使该解决方案广泛用于在加拿大和世界上建造的新 ** 基础设施中，使这种基础设施“智能化”。