Environmental and corrosion effects of different road salts

不同路盐的环境和腐蚀影响

• 批准号: 571358-2021
• 负责人: Hedberg, YolandaYS
• 金额: $ 5.2万
• 依托单位: University of Western Ontario
• 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=747431
• 关键词: Environmental; corrosion; effects; different; road

Chloride-containing road salts are widely used in Canada during the winter time. However, high chloride concentrations in waterways can destroy the ecosystem by depleting oxygen in the water and elevate the presence of heavy metals via flushing from soils. Also, about 50% of all vehicle corrosion can be attributed to the use of these road salts, which are also causing significant corrosion damage to the transport facilities. There are alternative road salts with comparable or better de-icing performance, however, there is no holistic Canadian study on their corrosion and environmental impact. The main goal of this partnership is to provide a holistic comparison and detailed understanding of different road salts, including two new proprietary salts, in terms of their corrosivity, environmental impact, and ice melting performance. This is achieved by field tests including performance for motorized and for light transportation groups (such as pedestrians, bicyclists, wheelchairs) along with a fundamental understanding of corrosion mechanisms of different road salts on relevant construction materials and the behaviour and impacts of these salts as they interact with the adjacent environment. This research will provide 1) industry with an in-depth, multidisciplinary state-of-the art summary on the performance and adverse impacts of existing de-icers in Canada, 2) insights on equitable access to public space and the importance of road salts, and 3) the general public and scientific community with potential benefits of non-toxic road salt alternatives, encouraging greater steps to-wards their deployment across Canada. The impacts of this partnership will be direct and long-term, in terms of economic, environmental, and traffic safety.

加拿大在冬季广泛使用含氯化物的道路盐。然而，水道中的高氯化物浓度会通过耗尽水中的氧气来破坏生态系统，并通过从土壤中冲洗来提高重金属的存在。此外，约50%的车辆腐蚀可归因于这些道路盐的使用，这些道路盐也对运输设施造成严重的腐蚀损害。有替代道路盐具有可比或更好的除冰性能，但是，加拿大没有对其腐蚀和环境影响进行全面研究。该合作伙伴关系的主要目标是全面比较和详细了解不同的道路盐，包括两种新的专有盐，包括其腐蚀性，环境影响和融冰性能。这是通过现场测试实现的，包括机动和轻型运输群体（如行人、骑自行车的人、轮椅）的性能，沿着对不同道路盐对相关建筑材料的腐蚀机制以及这些盐与邻近环境相互作用时的行为和影响的基本理解。这项研究将为1）行业提供关于加拿大现有除冰剂性能和不利影响的深入，多学科的最新总结，2）公平使用公共空间和道路盐的重要性的见解，以及3）一般公众和科学界的无毒道路盐替代品的潜在好处，鼓励采取更大的步骤在加拿大各地部署。这种伙伴关系的影响将是直接和长期的，在经济，环境和交通安全方面。