SAFE, SUSTAINABLE AND DIGITALLY-MONITORED CONCRETE STRUCTURES FOR SMART CITIES

智慧城市的安全、可持续和数字化监控的混凝土结构

• 批准号: RGPIN-2018-04859
• 负责人: Banthia, Nemkumar
• 金额: $ 5.79万
• 依托单位: University of British Columbia
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2019
• 资助国家: 加拿大
• 起止时间: 2019-01-01 至 2020-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=692085
• 关键词: SAFE; SUSTAINABLE; DIGITALLY; MONITORED; CONCRETE

* **Smart cities are cities that integrate infrastructure*and services to produce an efficient urban eco-system that integrates institutional,*physical, social and economic infrastructure through smart sensors and advanced*data-science. Concrete infrastructure in a Smart City must not only be safe and*sustainable, but must also integrate Internet of Things (IoT) and Information*and Communication Technology (ICT) to achieve operational efficiency,*cost-effective maintenance and end-of-life deconstructability. The primary*objective of this proposal is to contribute towards development of safe, sustainable,*and digitally-monitored concrete structures for Smart Cities. These objectives apply not only to new*construction, but also to deteriorated structure that need to regain their lost*capacity, as well as structures that are not deteriorated but still requires*strengthening against calamities such as earthquakes and fires. *** ***This proposal focuses on development of highly*damage-tolerant materials that utilize principles of nanotechnology to depict self-healing,*smartness and low-carbon behavior and can be placed in structures using digitally*empowered processes such as 3-D printing. In doing so, the program strives to integrate cutting edge*discoveries in materials sciences, sensors and structural engineering. *** ***The proposal focuses on two broad areas: FIRST:*It purports to develop a novel class of fiber reinforced concretes called Eco-Friendly*Ductile Cementitious Composites (EDCC) that are self-healing, durable, low-carbon,*and damage tolerant up to 6% strain. It is further proposed to modify matrices*in EDCC with nano-particles and reinforce them with co-extruded recycled fibers*from waste streams (such as tires) modified with hydrophilic and pozzolanic nano-coatings.* In one application, hollow fibers are*proposed as reinforcement i

*智慧城市是通过智能传感器和先进的数据科学整合基础设施*和服务，以产生一个高效的城市生态系统，该生态系统整合了制度、*物理、社会和经济基础设施。智能城市中的混凝土基础设施不仅必须是安全和*可持续的，还必须将物联网(IoT)、信息*和通信技术(ICT)整合在一起，以实现运营效率、*具有成本效益的维护和生命周期结束时的可解构性。这项建议的主要*目标是为智能城市开发安全、可持续、*和数字监控的混凝土结构。这些目标不仅适用于新的建筑，也适用于需要恢复其失去的能力的劣化结构，以及未劣化但仍需加强以抵御地震和火灾等灾害的结构。*这项提议的重点是开发高度耐损伤的材料，这种材料利用纳米技术的原理来描述自我修复、智能和低碳行为，并可以使用数字*授权的过程(如3-D打印)放置在结构中。在这样做的过程中，该计划努力整合材料科学、传感器和结构工程的尖端发现。*该提案主要关注两个方面：第一：*它旨在开发一种新型的纤维增强混凝土，称为生态友好型*韧性水泥基复合材料(EDCC)，具有自我修复、耐久、低碳*和高达6%应变的损伤容忍度。此外，还建议用纳米颗粒对EDCC中的基质进行改性，并用来自用亲水性和火山灰纳米涂层改性的废气(如轮胎)的共挤出再生纤维*来增强它们。*在一个应用中，中空纤维被建议作为增强材料