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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

基本信息

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

项目摘要

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.

该拟议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。该项目旨在利用一项专利技术，在聚丙烯和玻璃单丝纤维上涂上火山灰材料或粉煤灰和硅粉等辅助胶凝材料（SCM）。上述变量包括两个长度；微纤维（长度<20mm）和粗纤维（长度>40mm）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系统，包括丝束进料、粘合剂喷涂/加热系统、SCM 喷涂/固化室，最后是切碎和装袋系统。显微镜和验证性产品测试将为所有生产的 8 种产品创建纤维规格表。由于这些工程纤维表面上的硅质涂层，这些纤维与水泥基体形成优异（空隙更少）的界面过渡区（ITZ），从而改善和更持久的粘合。众所周知，在混凝土中添加微纤维可以减少收缩裂缝，与粗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。