Hynds Hylock® Joint Restraint System
The Hylock® Joint Restraint System for concrete pipes has been developed by Hynds to mitigate excessive joint flexure and extension as a result of significant movement in a seismic event or through differential bedding movement.
The Hylock® Joint Restraint System is covered by New Zealand Patent 615291.
Features and Benefits
- Strong, resilient, flexible, and versatile
- Provides a continuous connection of a series of concrete pipes
- Chain link effect allows controlled movement at the joints
- Will break at a pre-determined range of loads in the event of excess joint movement
- Easy to determine the load capacity of the restraint joint
- Incorporates rubber seismic shock absorber mushrooms around the joint that help protect the surrounding concrete at the joints
- Modified collar to provide 20 mm nominal joint gap which allows for greater movement at the joint
- Suitable for spigot and socket RJ pipes DN900–1800 mm and DN1950–2100 mm in-wall jointed pipes
- Suitable for butt-jointed jacking pipes
- Can be used to connect to end structures such as manholes and pump stations
- Restraint assembly is easy to connect after pipe is laid
- Restraint assembly may be replaced after failure
- Visual inspection is possible after a seismic event
Lower Carbon Options Available
