Advances in Microstructure, Durability Performance, and Self-Sensing Capabilities of Novel Functional FRP Nanocomposite Reinforcing Bars

新型功能性FRP纳米复合钢筋的微观结构、耐久性能和自感知能力的进展

• 批准号: RGPIN-2020-04967
• 负责人: Benmokrane, Brahim
• 金额: $ 7.21万
• 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: 2020
• 资助国家: 加拿大
• 起止时间: 2020-01-01 至 2021-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=717476
• 关键词: Advances; Microstructure; Durability; Performance; Self

The main goal of this Discovery Grant (DG) is to explore the development of novel functional FRP reinforcement for concrete structures using innovative nanomaterials and nanotechnologies. Nanoparticles (NPs) such as carbon nanotubes (CNTs) are claimed to have a potential for enhancing these targeted performance properties of a FRP composite manifold. CNTs have excellent interactions with FRP matrices due to their high surface area compared to micromaterials, leading to improved strength, stiffness, thermal resistance, and barrier properties when present in very small quantities. Furthermore, specific types of carbon nanofillers can also give the host FRP material self-sensing capabilities. By introducing nanoparticle technology in manufacturing FRP rebars, this research is transformative because it will lead to a technical breakthrough in the development of advanced FRP structural materials with sensing capacities and enhanced properties in terms of microstructure, durability, and mechanical resistance. This proposal is motivated mainly by the industrial and technological needs to develop a new class of multifunctional FRP rebars. This research will advance knowledge about material development, smart materials, and functionality integration. Moreover, it has the ambition to move beyond the isolated research attempts that have already been made in this field and provide a topical breakthrough with respect to traditional approaches and rules that limit the search of innovative solution techniques, by promoting the complete engineering design from the nanoscale functional design up to the structure performance evaluation. It also aims to establish a closed loop of theoretical and experimental investigations, cross-comparing results and achievements with the aim of obtaining an optimal material design and comprehensive procedure for validating and assessing the developed solutions for full-scale experimental testing. This DG will provide an opportunity to (1) develop a novel nanoparticle-reinforced FRP rebar with improved mechanical, thermal and barrier properties; (2) adapt/improve existing industrial production to allow the incorporation of the CNTs into the polymer matrix for producing FRP bars with superior properties; (3) implement nanotechnologies by adding CNTs and graphene to achieve self-sensing capabilities; (4) develop a hierarchical multi-scale computational framework that relies equally on coupled micro- and macroscale modelling to increase our understanding of the interface behaviour and durability; and (5) demonstrate the benefits of the developed technology for applications in the construction sector. The outcomes of this research proposal will constitute an original contribution to the state-of-the-art and will have a genuine industrial impact for Canadian manufacturers. This DG will involve the training of 9 doctoral, 2 master's students, and 3 postdoctoral and will be conducted in accordance with NSERC's Statements on EDI.

这项发现赠款（DG）的主要目标是探索使用创新的纳米材料和纳米技术来开发用于混凝土结构的新型功能FRP增强的开发。纳米颗粒（NP）（例如碳纳米管（CNT））据称具有增强FRP复合歧管的这些靶向性能特性的潜力。与微材料相比，由于其高表面积，CNT与FRP矩阵具有良好的相互作用，从而提高了强度，刚度，热电阻和屏障特性，而势却很少。此外，特定类型的碳纳米填料也可以赋予宿主FRP材料自感应能力。通过在制造FRP钢筋中引入纳米颗粒技术，这项研究具有变革性，因为它将在高级FRP结构材料的开发中取得技术突破，具有感应能力，并且在微结构，耐用性和机械耐药性方面具有增强的性能。 该建议主要是由工业和技术需求激励，以开发新的多功能FRP钢筋。这项研究将提高有关材料开发，智能材料和功能整合的知识。此外，它具有超越该领域已经进行的孤立研究尝试的雄心纳米级功能设计直至结构性能评估。它还旨在建立一个理论和实验研究的封闭环节，交叉弥补的结果和成就，目的是获得最佳的材料设计和综合程序，以验证和评估开发的解决方案进行全面实验测试。 该DG将为（1）开发一种新型纳米颗粒增强的FRP钢筋，并具有改善的机械，热和屏障性能； （2）调整/改善现有的工业生产，以允许将CNT掺入聚合物基质中，以生产具有出色性能的FRP棒； （3）通过添加CNT和石墨烯来实现纳米技术来实现自感应功能； （4）开发一个层次多尺度计算框架，该框架同样依赖于耦合的微观和宏观尺度建模，以增强我们对界面行为和耐用性的理解； （5）证明了开发技术在建筑领域的应用。该研究建议的结果将构成对最先进的原始贡献，并将对加拿大制造商产生真正的工业影响。 该DG将涉及9名博士学位，2名硕士学生和3个博士后的培训，并根据NSERC在EDI上的陈述进行培训。