Swellable Water Bar For Sealing Construction Joints
Newton 312 BentoProof is a sodium-bentonite based hydrophilic water bar, well engineered for sealing construction joints in concrete structures. If BentoProof comes into contact with water (other than the normal dampness of the concrete, which is not sufficient) it will swell as it stores the water.
Even after numerous wet/dry cycles, the BentoProof bar, lying fully flush in the construction joint, will continue to function properly.
The material changes from its solid state into a plastic compound, allowing it to penetrate the finest of cracks and cavities. If the increase in the volume of the product is obstructed, the pressure created by the swelling will be delayed, but will still eventually form a seal. This is to ensure that the surrounding concrete has developed the necessary firmness to withstand such an expansion.
Recommended waterbar for compressed joints such as at the kicker
Can be installed using Newton 306 SwellMastic, Newton 309-M and Newton Fixing Mesh
The concrete surface must be dry, free of dust, forming oil and loose particles. Unevenness can be adjusted with the Newton 306 SwellMastic and must not show any sharp-edged displacement. Before installing BentoProof, any ice coverings, standing water and cement sludge need to be removed.
BentoProof can either be installed with clamps, with Newton 309 ContactAdhesive, or with a special fixing mesh on the first concrete section in the middle of the joint in-between the reinforcements. The distance between two neighboring clamps is dependant on the state of the surface.
The maximum distance of 15 cm must not be exceeded, in order to ensure that BentoProof is securely fixed in place and will remain so during concreting. Lightly pushing the water bar into the Newton 309 ContactAdhesive ensures optimum fixing.
When installing BentoProof with the special fixing mesh wall plugs, arm the mesh on its external section.
The minimal covering of concrete must be at least 8 to 10cm on all sides. This ensures that the necessary expansion and sealing effect can be achieved.