2000年，一种基于聚氨酯的新型双组分喷涂材料获得了 英国饮用水检查局，适用于饮用水干管。这个 这种新材料的主要优点是它的固化时间可以在30分钟后恢复使用 与现有的需要16小时的环氧树脂相比。早期环向应力的增加使 大直径管道的喷涂，目前还没有广泛使用环氧树脂 与安装聚乙烯衬里相比，成本显著降低。在测试了 约克郡水务公司在小直径干管上采用了新材料，成功地对一个管道进行了衬砌 直径825mm的100年铸铁管。本文介绍了这项试验及其结论和结果 这项新技术现在如何被用于在约克郡铺设大直径干线。信息技术 此外，还详细介绍了对客户的好处、潜在的成本节约和缩短施工时间 从而减少了交通中断。 包括5个参考文献、表格、图表。

In 2000, a new two part spray applied material based on polyurethane was approved by the Drinking Water Inspectorate in the United Kingdom, for application to potable water mains. The main benefit of this new material is its cure time which allows return to service after 30 minutes compared to existing epoxy resins that require 16 hours. The increase in early hoop stress enables the spraying of large diameter pipes that is not currently widely available with epoxy resin while being significantly less costly than the alternative of installing a polyethylene liner. After testing the new material on small diameter mains, Yorkshire Water undertook the successful lining of an 825mm diameter 100 year old cast iron pipe. This paper covers this trial and its conclusions and how this new technology is now being used to line large diameter mains throughout Yorkshire. It also details the benefits to customers, potential cost savings and shorter construction time which in turn has resulted in reduced traffic disruption. Includes 5 references, tables, figures.