Upgrading of Kruisfontein Waste Water Treatment Works. dura. joint SW-R (swellable waterstop rubber) is a Hydrophilic Butyl rubber waterstop manufactured into high performance synthetic elastomer strips. Ideal for sealing of prefabricated concrete element e.g. joints in tunnels and shafts and may also be used for open joints. dura. joint SW-R are made from new generation expanding rubber sealing material that can handle expansion up to 400% and is stable during the swelling process. dura. joint External E PVC are placed on blinding layers prior to casting footing.
The dura.®joint waterstop range is extruded from specially formulated PVC material, which whilst flexible is easily welded on site to provide the primary seal in the waterproofing of water retaining and/or water excluding structures. Prevention of regress or ingress of water or liquids through construction or expansion joints in water retaining or excluding structures such as dams, reservoirs, digesters, water towers, canals, basements, car parks and retaining walls.