Sika Waterbar® AR VN
EXTERNAL PVC WATERBAR FOR CONSTRUCTION JOINTS
Sika Waterbar® AR VN is a flexible, external waterbar for construction joints made from thermoplastic PVC.
It is designed to stop the migration of water through construction joints in concrete structures.
- Sealing starts as soon as the concrete has hardened
- Multi rib profile provides impenetrable barriers to water migration
- Can be easily site welded (welding knife is available)
- Good chemical resistance
- Integrated injection channels for subsequent back-filling
- Suitable for welding with PVC-P based Sikaplan® WP membranes
Usage
For the effective sealing of concrete construction joints in structures such as:- Water reservoirs
- Sewage treatment plants
- Swimming pools
- Basements
- Retaining walls
- Lift shafts
- Tunnels, culverts
- Service pits
Advantages
- Sealing starts as soon as the concrete has hardened
- Multi rib profile provides impenetrable barriers to water migration
- Can be easily site welded (welding knife is available)
- Good chemical resistance
- Integrated injection channels for subsequent back-filling
- Suitable for welding with PVC-P based Sikaplan® WP membranes
Packaging
20 m rolls (other lengths on request)
Colour
Flexible strip / Yellow
Product Details
APPROVALS / CERTIFICATES
Local test reports (in Vietnam) are available.
Shelf life
5 years from date of production if stored properly
Storage conditions
Dry, shaded place (protected from sunlight)
System structure
| Type | Width | Roll | Nominal | Height of ribs (mm) (± 5mm |
| AR-25 | 250 | 20 | 2.5 - 4.0 | 20 |
Sika Waterbar® AR-25 VN profile
Shore A hardness
| > 70 | ASTM D2240 |
Tensile strength
| 12 N/mm2 (± 5%) | ASTM D412-06 |
Elongation
| 300% (± 5%) | ASTM D412-06 |
Chemical resistance
Permanent: Seawater, sewage
Temporary: Diluted inorganic alkalis, mineral acids, mineral oils and fuels.
Service temperature
-35°C to +55°C
Application
APPLICATION INSTRUCTIONS
Application
The Sika Waterbar® AR VN profile is installed flush with the external face of the concrete. It should be carefully fixed in the formwork before concreting. The Sika Waterbar® AR VN should be aligned and installed on the waterproofing substrate as centrally as possible to the segment joint.
Protection until the waterbar system is fully cast in the concrete.
Special care must be taken with the waterbar system ends.
Waterbars must be cleaned before casting in.
Do not install on the top surface of horizontal or slightly sloping concrete.
Welding
The Sika Waterbar® AR VN is butt jointed by welding at minimum ambient temperature of + 5°C and dry weather conditions.
Jointing with adhesives is not permitted.
On site welding can be undertaken using a Sika electric welding knife. The specific welding parameters must be adjusted and checked on samples prior to the welding work.
Both ends of the joint are heated simultaneously on the faces of the welding knife until an even, molten bead of PVC appears. The welding knife is withdrawn and the Sika Waterbar® AR VN is immediately pushed together.
The joint should be held rigid until the plastic cools down and solidifies.
Check for any gaps or imperfect joints.
Failures can be caused by irregularities of cut edges, insufficient heat, over heated, dust etc.
Redo the welding if necessary.