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SikaSwell® S-2 | MCT CHEMICALS | SIKA PAKISTAN

SikaSwell® S-2 is a high-performance, water-reactive, hydrophilic sealing profile designed to create an effective, flexible, and long-lasting seal in concrete and masonry construction joints, cracks, and voids. Upon contact with water, SikaSwell® S-2 expands to form a waterproof barrier, making it an ideal solution for preventing water infiltration in water-exposed structures. It is commonly used in basements, tunnels, foundations, and other underground spaces to provide reliable waterproofing. SikaSwell® S-2’s superior sealing properties ensure it performs well under varying environmental conditions and high water pressure.

sikaswell-s-2

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Uses
For joint sealing:

  • Construction joints
  • Penetrations of pipes and steelwork through walls and floor slabs
  • Various types of penetrations and construction joints
  • Construction joints in cable ducts, etc.

For fixing and adhering swellable profiles:

  • SikaSwell® A Profiles
  • SikaSwell® P Profiles

Characteristics / Advantages

  • Easy and quick to apply (1-part formulation)
  • Cost-effective solution for joint sealing compared to other systems
  • Flexible solution for various joints and details
  • Optimized expansion rate, ensuring no damage to fresh concrete
  • Permanently water-resistant, even under wet and dry cycles
  • Strong adhesion to a wide range of substrates

Approvals / Standards

  • Water Pressure Resistance and Durability tests, SikaSwell® S-2, BBA, Test certificate No.13/4994
  • Water Tightness, SikaSwell® S-2, Vattenfall, Test report No. 1278-10
  • Sealing test, Building Rules List A, SikaSwell® S-2, WISSBAU, Test report No. 2017-313

Product Information

  • Chemical Base: 1-part polyurethane, moisture-curing
  • Packaging:
    • 300 ml cartridges (12 cartridges per box)
    • 600 ml unipacs (20 unipacs per box)
    • Refer to current price list for packaging variations
  • Appearance / Colour: Oxide red
  • Shelf Life: 9 months from the production date
  • Storage Conditions: Store in original, unopened, and undamaged packaging in dry conditions at temperatures between +5°C and +25°C

Technical Information

  • Density: 1.24 kg/l (at +23°C, ISO 2811)
  • Shore A Hardness (non-swollen after 7 days at +23°C, 50% relative humidity): 30-50 (ISO 7619-1)
  • Volume Change in Tap Water:
    • 1 day: < 25%
    • 7 days: < 100% (ISO 1817)
  • Swelling Properties: Reduced and delayed in salty water

Application Information

  • Sag Flow: < 2 mm at +23°C, 50% relative humidity (ISO 7390)
  • Consumption:
    • 300 ml cartridges:
      • 12 mm width: 4.1 m
      • 15 mm width: 3.1 m
      • 20 mm width: 1.8 m
    • 600 ml unipacs:
      • 12 mm width: 8.2 m
      • 15 mm width: 6.2 m
      • 20 mm width: 3.6 m
  • Substrate Moisture Content: Dry or slightly damp
  • Curing Rate:
    • 1 day at +23°C, 50% relative humidity: ~2.0 mm
    • 10 days at +23°C, 50% relative humidity: ~10.0 mm
  • Skin Time: 60 minutes at +23°C, 50% relative humidity (EN 15651)
  • Application Window: Place SikaSwell® profiles onto SikaSwell® S-2 within 30 minutes
  • Ambient and Substrate Temperature:
    • Minimum: +5°C
    • Maximum: +35°C
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