
Rehabilitation of Dongjiang Water Mains
The Dongjiang water mains are a major supply of fresh water from mainland China to Hong Kong. The existing water mains were found to have deteriorated after years in service and required rehabilitation. The Tyfo® Fibrwrap® system have passed the vigorous testing required by Water Supplies Department and is proven to be able to strengthen pipes for both fully-structural and semi-structural scenarios. In this project, rehabilitation using Tyfo® Fibrwrap® system is carried out to more than 6km of water mains, size ranging from 1200mm to 2300mm diameter.
The scope of works included the following:
- Survey for existing pipe conditions
- Pipe rehabilitation design
- Installation of the Tyfo® Fibrwrap® Composite System for pipe rehabilitation