SpECtite Swellseal Bentobar
BENTONITE BASED HYDROPHILIC WATERSTOP – SALINE GRADE
SpECtite Swellseal Bentobar is a hydrophilic waterstop made with sodium bentonite and butyl rubber for use in construction joints subject to saline water penetration. SpECtite Swellseal Bentobar presents a unique characteristic of swelling many times its dry volume when in contact with ground/saline water to form an impenetrable gel capable of resisting hydrostatic pressures of up to 40 meters.
Technical Details
SpECtite Swellseal Bentobar is a very effective waterstop seal in the following situations:
• Construction joint
• Pipe and cable penetrations
• New to existing concrete
• Sealing irregular concrete surfaces
• Construction joint
• Pipe and cable penetrations
• New to existing concrete
• Sealing irregular concrete surfaces
. Quick and easy to install – does not require special intersections, on-site welding or jointing.
• Suitable for ground/saline water conditions.
• Safe and odour-free
• Totally flexible
• Surface fixed – no pre-formed chases required
• Seals localised honeycombing and minor fractures
• Suitable for ground/saline water conditions.
• Safe and odour-free
• Totally flexible
• Surface fixed – no pre-formed chases required
• Seals localised honeycombing and minor fractures
| Specific gravity @25°C | 1.43 |
| Resistance to hydrostatic pressure | 4 bars |
| Swelling capacity (3.5% saline solution) | 180% |
| Service temperature | -20ºC to +75ºC |
| Bending radius at corners | 50mm |
| Colour | Red |
Surface Preparation
All surfaces to which SpECtite Swellseal Bentobar is to be applied should be clean and free of standing water. Any loose or flaking concrete must be removed. (The preferred practice of scabbling joints is recommended).
Application
Uncoil a length of SpECtite Swellseal Bentobar and apply onto the concrete surface, noting that it must be positioned inside the reinforcement cage with a minimum concrete cover of 75mm.
Press SpECtite Swellseal Bentobar firmly into place to ensure it covers any surface undulations.
In vertical installations work from the base up to prevent any deformation or elongation.
Jointing
Cut the ends of adjoining lengths of SpECtite Swellseal Bentobar with a sharp tool to ensure a clean and square cut and press together for a close butt joint. Do not overlap.
Fixing
Fix SpECtite Swellseal Bentobar in place using nailing guns, with nails at 300mm spacing approximately.
Do not use any damaged, deformed or swollen bars.
All surfaces to which SpECtite Swellseal Bentobar is to be applied should be clean and free of standing water. Any loose or flaking concrete must be removed. (The preferred practice of scabbling joints is recommended).
Application
Uncoil a length of SpECtite Swellseal Bentobar and apply onto the concrete surface, noting that it must be positioned inside the reinforcement cage with a minimum concrete cover of 75mm.
Press SpECtite Swellseal Bentobar firmly into place to ensure it covers any surface undulations.
In vertical installations work from the base up to prevent any deformation or elongation.
Jointing
Cut the ends of adjoining lengths of SpECtite Swellseal Bentobar with a sharp tool to ensure a clean and square cut and press together for a close butt joint. Do not overlap.
Fixing
Fix SpECtite Swellseal Bentobar in place using nailing guns, with nails at 300mm spacing approximately.
Do not use any damaged, deformed or swollen bars.
SpECtite Swellseal Bentobar is supplied in standard size coils of 20 x 25mm x 5m long. A cardboard box contains 6 x 5m coils.
Contact us for more info.
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