Post-construction type waterstop flexible joint systems
This is a post-construction waterstop flexible joint system for existing concrete structures where expandable rubber is secured in place to joint structure surfaces using anchor bolts and flanges.
- The shape of the rubber is able to conform to displacement, and fastening the expandable rubber and Span Seal using flanges, bolts, and nuts ensures water-tightness.
- Layering specialized nylon textile fibers as a reinforcement core material in the central areas improves water pressure resistance characteristics, and also helps make for a lighter weight product while also minimizing damage in the event that any cracks or other faults do occur in the expandable rubber surface.
- Specialized rubber with superior weather resistance characteristics is used for the base material.
The EPDM type is a specialized material for use in waterworks facilities and conforms to the stipulations of Ministry of Health, Labour and Welfare Ordinance No. 15.
Water treatment plant structures, utility tunnels, box culverts, underground passages, waterways
Santac Flexible Joints（pdf）