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, SreekantaS
• 金额: $ 2.31万
• 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: 2022
• 资助国家: 加拿大
• 起止时间: 2022-01-01 至 2023-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=748902
• 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.

加拿大许多现有的桥梁都是用传统混凝土（也称为水泥）建造的，其强度低25-40 MPa。这种混凝土还缺乏耐用性能，因此，在暴露于冬季盐喷雾剂和加拿大极端天气时，由传统混凝土制成的桥梁性能较差。因此，用传统混凝土建造的桥梁容易受到损害，从而经常进行维修，高维护成本和降低的服务寿命。该NSERC研究项目的行业合作伙伴是Facca Inc.，这是一家领先的加拿大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），该混凝土（UHPC）更强（强度为150-160 MPa），并且与传统混凝土相比具有较高的耐用性能。 FACCA成功地将此UHPC用于较小的演示项目，例如桥梁甲板和桥梁维修工作的覆盖层（顶部薄层）。 FACCA希望扩展使用UHPC来开发一种新颖的UHPC桥梁建设技术，这将使FACCA具有竞争优势，并有机会赢得更多的桥梁建设项目。因此，该NSERC项目的结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。这项新的桥梁建设技术还将为所有加拿大工程师打开新的门，以建造将具有弹性并提供更好质量控制和更好美学的UHPC桥梁。这项新技术还将减少施工时间，并需要更少的材料，因此将减少总体二氧化碳排放，从而改善加拿大的空气质量。这种新的桥梁建设方法还将使加拿大桥梁不太容易受到损害，并延长这些桥梁的使用寿命，从而节省了加拿大纳税人的钱。这项研究工作将在温莎大学在温莎大学（Windsor）和温莎大学（University of Windsor）的Sreekanta Das博士和FACCA Inc.的Philp Loh先生的监督下在四年内执行这项研究工作。