Green engineered surface-active fiber composites for the construction industry

用于建筑行业的绿色工程表面活性纤维复合材料

• 批准号: 561530-2021
• 负责人: Gupta, Rishi
• 金额: $ 9.11万
• 依托单位: University of Victoria
• 依托单位国家: 加拿大
• 项目类别: Idea to Innovation
• 财政年份: 2021
• 资助国家: 加拿大
• 起止时间: 2021-01-01 至 2022-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=722960
• 关键词: Green; engineered; surface; active; fiber

This proposed project aims to produce an innovative green surface treated fiber for use as reinforcement by the construction industry. The proposed project aims to use a patented technology to coat monofilament fibers of polypropylene and glass with pozzolanic material or supplementary cementitious materials (SCMs) like fly-ash and silica fume. The variables noted above including two lengths; a micro fiber (length <20mm) and a macro fiber (length >40mm) will result in eight different types of fibers. One of the main objectives of this project is to design and construct a prototype conveyor system with tow feed, adhesive spray/heat system, followed by SCM spray/curing chamber, and finally a chopping and bagging system. Microscopy and confirmatory product testing will allow for creating a fiber specification sheet for all the 8 products produced. Owing to the siliceous coating on the surface of these engineered fibers, these fibers develop superior (less voids) Interfacial Transition Zone (ITZ) with the cement matrix resulting in improved and more durable bonding. Addition of micro fibers in concrete is well known to reduce shrinkage cracking and combined use with macro fibers can add the otherwise lacking post crack strength in brittle matrix of concrete. The involvement of various external stakeholders will allow us to meet the project goal of rapid deployment of the fibers produced using this technology.

这个拟议的项目旨在生产一种创新的绿色表面处理纤维，用于建筑行业的加固。拟议的项目旨在使用一项专利技术在聚丙烯和玻璃单丝纤维上覆盖火山灰材料或辅助胶凝材料(SCM)，如飞灰和硅灰。上述变量包括两个长度；微纤维(长度20 mm)和大纤维(长度40 mm)将产生八种不同类型的纤维。该项目的主要目标之一是设计和建造一个原型输送机系统，该系统具有丝束输送、胶粘剂喷雾/加热系统，然后是SCM喷雾/固化腔，最后是切碎和装袋系统。显微镜和验证性产品测试将允许为所有生产的8种产品创建纤维规格表。由于这些工程纤维表面的硅质涂层，这些纤维与水泥基质形成了更好的(较少空隙)界面过渡区(ITZ)，从而改善了粘接性能，并使粘接更加持久。众所周知，在混凝土中掺入微纤维可以减少收缩裂缝，与大纤维结合使用可以增加混凝土脆性基质中原本缺乏的裂缝后强度。各种外部利益相关者的参与将使我们能够实现快速部署使用该技术生产的纤维的项目目标。