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.

该发现基金（DG）的主要目标是探索使用创新纳米材料和纳米技术开发用于混凝土结构的新型功能性FRP增强材料。纳米颗粒（NPs），如碳纳米管（CNTs），据称具有增强FRP复合材料歧管这些目标性能的潜力。与微材料相比，碳纳米管具有较高的表面积，因此与FRP基体具有良好的相互作用，当少量存在时，碳纳米管的强度、刚度、耐热性和阻隔性都得到了改善。此外，特定类型的碳纳米填料也可以使宿主FRP材料具有自传感能力。通过引入纳米颗粒技术制造FRP筋，这项研究具有变革性，因为它将导致先进FRP结构材料的技术突破，这些材料具有传感能力，并且在微观结构，耐久性和机械阻力方面具有增强的性能。