Sika Waterbars® | MCT CHEMICALS | SIKA PAKISTAN

Uses
Sika Waterbars® are primarily used to seal construction and expansion joints in water-retaining structures such as reservoirs, water tanks, dams, spillways, canals, swimming pools, and sewage tanks. They also prevent water from entering concrete structures, including basements, underground car parks, tunnels, subways, and retaining walls.

Advantages

• Multi-ribbed sections follow the tortuous path principle for enhanced sealing.
• Made from high-quality PVC for long-lasting durability.
• Can withstand high water pressure.
• Easy to install using clip fastening; simple to weld on-site.
• Available in various sizes and types to suit different uses.
• Factory-produced cross sections available for convenience.

Standards/Approvals
Sika Waterbars® are tested to meet the following standards:

• BS 2571
• DIN 18541, Part 2
• US Corps of Engineers: CRD-C 572
• ASTM D-412 & ASTM D-638

Product Data

• Colour: Grey for construction joints; Yellow for expansion joints
• Packaging: Available in 15 m and 30 m rolls
• Storage/Shelf Life: 60 months from the production date when stored in unopened, undamaged, and sealed original packaging, in dry conditions at temperatures not exceeding +30°C. Protect from UV light.

Technical Data

• Density: 1.45 ± 0.15 kg/l
• Chemical Base: Polyvinyl Chloride
• Service Temperature: -35°C to +55°C
• Tensile Strength: ≥ 10 N/mm² (12 – 15 N/mm² as per standards)
• Tear Strength: ≥ 12 N/mm (DIN 53507 A)
• Shore A Hardness: 90 ± 5 (DIN 53505)
• Elongation at Break: > 300%
• Chemical Resistance:
  • Permanent resistance to water, seawater, sewage, and road salt solutions.
  • Temporary resistance to diluted inorganic alkalis, mineral acids, and mineral oils.
  • Alkali Resistance: Passed (CRD-C 572-65)

Application Details

• Welding Temperature: Approximately 200°C

Application Selection
The appropriate Waterbar should be selected based on factors such as joint type, concrete thickness, concrete grade, reinforcement positioning, expected movement (expansion/shear), and water pressure exposure.
General Guidelines:

• The total width of the Waterbar should be less than or equal to the thickness of the concrete slab it is placed in.
• The width of the Waterbar should be at least six times the size of the largest aggregate used.