Development of Design Guidelines for Structural Components of Novel UHPC Bridge Structure

新型 UHPC 桥梁结构结构部件设计指南的制定

• 批准号: 556301-2020
• 负责人: Das, Sreekanta
• 金额: $ 1.66万
• 依托单位: University of Windsor
• 依托单位国家: 加拿大
• 项目类别: Alliance Grants
• 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=721506
• 关键词: Development; Design; Guidelines; Structural; Components

Many existing bridges in Canada are built with traditional concrete (also known as cement), which has a low strength of 25-40 MPa. Such concrete also lacks durability properties and hence, bridges made of traditional concrete perform poorly when exposed to winter salt spray and the extreme weather of Canada. Hence, bridges built with traditional concrete are susceptible to damages resulting in frequent traffic interruptions for repairs, a high maintenance cost, and a reduced service life. The industry partner of this NSERC research project is Facca Inc., a leading Canadian company for bridge construction and bridge repair. Facca has developed an ultra-high-performance concrete (UHPC), which is much stronger (strength of 150-160 MPa) and has superior durability properties compared to traditional concrete. Facca has successfully used this UHPC for smaller demonstration projects such as for overlay (top thin layer) of bridge decks and bridge repair works. Facca would like to extend the use of the UHPC for developing a novel and revolutionising UHPC bridge construction technology that will give Facca a competitive edge and the opportunity to win more bridge construction projects. Hence, the outcomes of this NSERC project will help Canadian company, Facca Inc. to grow, create new jobs, and boost Canadian economy. This new bridge construction technology will also open a new door for all Canadian engineers in constructing UHPC bridges that will be resilient and offer much better quality control and a better aesthetic. This new technology will also reduce the construction time and require less materials and thus, will reduce overall carbon dioxide emissions improving Canada's air quality. This new bridge construction method will also make Canadian bridges less susceptible to damages and extend the service life of these bridges, saving Canadian taxpayers' money. This research work will be executed in four years by three students at the University of Windsor under the supervision of Dr. Sreekanta Das at the University of Windsor and Mr. Philp Loh at Facca Inc.

加拿大许多现有桥梁都是用传统混凝土（也称为水泥）建造的，其强度较低，为 25-40 MPa。这种混凝土还缺乏耐久性能，因此，传统混凝土制成的桥梁在暴露于冬季盐雾和加拿大的极端天气时表现不佳。因此，传统混凝土桥梁容易受到损坏，导致交通频繁中断维修，维护成本高，使用寿命缩短。该 NSERC 研究项目的行业合作伙伴是 Facca Inc.，这是一家加拿大领先的桥梁建设和桥梁维修公司。 Facca 开发了一种超高性能混凝土 (UHPC)，与传统混凝土相比，其强度更高（强度为 150-160 MPa），并且具有卓越的耐久性能。 Facca 已成功地将这种 UHPC 用于小型示范项目，例如桥面覆盖层（顶部薄层）和桥梁修复工程。 Facca 希望扩大 UHPC 的使用范围，开发一种新颖且革命性的 UHPC 桥梁施工技术，这将为 Facca 带来竞争优势，并有机会赢得更多桥梁施工项目。因此，该 NSERC 项目的成果将帮助加拿大公司 Facca Inc. 发展、创造新的就业机会并促进加拿大经济。这种新的桥梁施工技术也将为所有加拿大工程师建造 UHPC 桥梁打开一扇新的大门，这些桥梁将具有弹性，并提供更好的质量控制和更好的美观。这项新技术还将减少施工时间并减少材料需求，从而减少总体二氧化碳排放量，改善加拿大的空气质量。这种新的桥梁施工方法也将使加拿大桥梁不易受到损坏，并延长这些桥梁的使用寿命，从而节省加拿大纳税人的钱。这项研究工作将由温莎大学的三名学生在温莎大学的 Sreekanta Das 博士和 Facca Inc. 的 Philp Loh 先生的监督下在四年内完成。