Smart high performance concrete composites for developing robust and resilient infrastructures

智能高性能混凝土复合材料，用于开发坚固且有弹性的基础设施

• 批准号: RGPIN-2019-05613
• 负责人: Hossain, Khandaker
• 金额: $ 3.79万
• 依托单位: Ryerson University
• 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=715622
• 关键词: Smart; performance; concrete; composites; developing

The recent deteriorating condition of the infrastructure in Canada has motivated authorities and researchers to seek new concrete technology for enhancement of material properties. The modern day concrete frontiers can be defined by “high durability, high ductility and smart self-healing/sensing ability”. During the last decades, tremendous progress has been made on the high performance concrete (HPC) technology. One such emerging HPC technology involves the family of fibre reinforced engineered concrete (EC). With intrinsically tight crack width, high tensile ductility and self-healing potential, EC offers significant potential to resolve durability problems of concrete structures and to be used either in new construction or as repair material. Despite progress in EC technology, there is an urgent need to conduct research on developing much greener smarter ECs. The proposed research is uniquely positioned to make ground breaking advances in revolutionizing EC technology addressing challenges towards sustainable civil infrastructures. This research involves an integrated study consisting of experimental, theoretical and numerical investigations. The long-term objective of the proposed research is to develop new generation of smarter greener GP/GO-ECs incorporating zero-cement based geopolymers (GPs) and emerging graphene oxide (GO) based nano-carbon materials with improved strength, durability, micro-structural and self-healing/sensing properties for building/bridge infrastructures. The short-term objectives are to: (i) conduct experimental investigation to develop different classes of GP/GO-ECs through evaluating fresh state/mechanical/durability properties with self-healing/sensing characteristics, (ii) investigate structural performance of GP/GO-ECs based building and bridge elements under different loadings combined with evaluating self-healing/sensing abilities, (iii) investigate the use of GP/GO-ECs as repair material and performance of such EC-made structural elements subjected to aggressive environment and (iv) develop design specifications for proposed GP/GO-ECs for production, formulate design guidelines for EC based structural elements and asses their viability through life cycle analyses. This research will allow researchers/engineers to perfect their knowledge of GP/GO-ECs /proposed structural systems and evaluate the potential of the new technology. This research is very relevant to Canada where proposed GP/GO-EC technology can play a vital role in the future construction, renovation and self-health monitoring of structures. This research is a highly viable initiative and there is no doubt that smart GP/GO-EC technology will lead to the construction of robust resilient sustainable structural systems (with enhanced strength, ductility, durability, service life and economy) for the 21st century. By supporting this research, Canada can play a significant role in the development and worldwide transfer of this novel technology.

最近加拿大基础设施的恶化状况促使当局和研究人员寻求新的混凝土技术来增强材料性能。现代混凝土的前沿可以定义为“高耐久性、高延性和智能自愈/传感能力”。在过去的几十年中，高性能混凝土（HPC）技术取得了巨大的进步。其中一种新兴的高性能混凝土技术涉及纤维增强工程混凝土（EC）家族。EC具有固有的紧密裂缝宽度，高拉伸延展性和自愈潜力，在解决混凝土结构的耐久性问题以及在新建筑或作为修复材料中使用方面具有重要的潜力。尽管电子控制技术取得了进步，但迫切需要研究开发更环保、更智能的电子控制系统。