Product Data Sheet Safety Data Sheet Show all documents

SikaSwell® S-2

ONE-PART POLYURETHANE, EXTRUDABLE SWELLING WATERSTOP (BENTONITE-FREE)

SikaSwell® S-2 is a specially formulated, high performance, swellable, one-component, polyurethane-based waterstop for use in all kinds of construction joints. Swelling rubber creates a compression seal within joint, blocking the passage of water.

  • Swells up to 100 % in potable water, slightly less in salt water and wastewater.
  • Permanently water resistant, with no leaching and does not dissolve in water.
  • Capable of sealing construction joints with head pressures of up to 345 KPa (50 psi) or 35 m Hydrostatic head (115 ft hyd. head).
  • Elastic - withstands wet/dry cycling.
  • Easy, simple application.
  • Adaptable in the field to suit job requirements.
  • No nails, glue, or hooks required.
  • Controlled expansion eliminates cracking in fresh concrete.
  • Offers resistance to various chemicals.
  • Thixotropic properties allow SikaSwell® S-2 to seal irregular joint surfaces.
  • Very economical.
  • Saves labour by eliminating inverted keyways, split forming, heat splicing, special fittings and tieing to rebar associated with conventional PVC waterstops.
  • No mixing required.
  • Allows more thorough vibration of concrete at joint, resulting in better concrete consolidation which aids in achieving a watertight joint.
Product Data Sheet Safety Data Sheet Show all documents

Usage

  • Designed for construction joints in new watertight concrete structures
  • Excellent for sealing pipe penetrations through walls and floor slabs
  • May be applied to horizontal, vertical and overhead surfaces
  • Material used to seal interlocking joints in sheet pile installations
  • Excellent for sealing joints between precast elements
  • Ideal for watertight construction joints between new and existing concrete
 

Advantages

  • Swells up to 100 % in potable water, slightly less in salt water and wastewater.
  • Permanently water resistant, with no leaching and does not dissolve in water.
  • Capable of sealing construction joints with head pressures of up to 345 KPa (50 psi) or 35 m Hydrostatic head (115 ft hyd. head).
  • Elastic - withstands wet/dry cycling.
  • Easy, simple application.
  • Adaptable in the field to suit job requirements.
  • No nails, glue, or hooks required.
  • Controlled expansion eliminates cracking in fresh concrete.
  • Offers resistance to various chemicals.
  • Thixotropic properties allow SikaSwell® S-2 to seal irregular joint surfaces.
  • Very economical.
  • Saves labour by eliminating inverted keyways, split forming, heat splicing, special fittings and tieing to rebar associated with conventional PVC waterstops.
  • No mixing required.
  • Allows more thorough vibration of concrete at joint, resulting in better concrete consolidation which aids in achieving a watertight joint.

Packaging

600 mL (20 US fl. oz) sausage, 20/case

Colour

Red

Product Details

Product Information

Composition / Manufacturing

1-part polyurethane, moisture curing

Shelf Life

9 months in original, unopened packaging.

Storage Conditions

Storage temperatures: 5−32 °C (41−89 °F). Condition product at temperatures between 10 and 32 °C (50 and 89 °F) before using.

Density

1.33 kg/L (11.08 lb/US gal.)

Dimensions

Profile Dimensioning*
Suggested dimensions of SikaSwell® S-2 profile depending on concrete thickness

Concrete Thickness

Number of profiles required

Dimensions of side length of triangular section (mm)

200−300 mm (8−12 in)

1

16 (5/8 in)

300−500 mm (12−20 in)

1

19 (3/4 in)

> 500 mm (> 20 in)

2

19 (3/4 in)

*For general purposes, it is recommended to use a triangular section with a side length of 16 mm (5/8 in) when maximum diameter of concrete aggregate is ≤ 25 mm (1 in). If maximum diameter of concrete aggregate is > 25 mm (1 in), a triangular section with a side length of 19 mm (3/4 in) is recommended.
Technical Information

Shore A Hardness

Before swelling

40−60

After swelling

> 10

Swelling

After 24 hours

< 20 %

After 7 days

> 100 %

Application

Application Information

Curing Rate

24 hours

2 mm (5/64 in)

7 days

10 mm (3/8 in)

Skinning time

2 hours 

(CQP 019-1)

Ambient Air Temperature

10−32 °C (50−89 °F)

Substrate Temperature

10−32 °C (50−89 °F)

*Product can be extruded best when applied at temperatures exceeding 20 °C (68 °F); lower temperatures increase viscosity. In case of cold weather, product should be stored in rooms heated at 20 °C (68 °F) over the 8 hours before placement.
Consumption

Consumption

600 mL (20 US fl. oz) uni-pac sausage seals:

Triangular  

Yield

16 x 16 x 16 mm (5/8 x 5/8 x 5/8 in)

  5.5 m (18 linear ft)

19 x 19 x 19 mm (3/4 x 3/4 x 3/4 in)

  3.7 m (12 linear ft)

Note: Yield may vary based on substrate irregularities.
Application steps

SUBSTRATE QUALITY

Substrate must be clean, sound, free of loose particles, dust, laitance, oils, and other contaminants.

SUBSTRATE PREPARATION

Clean all surfaces. Surface may be dry or damp, with no presence of standing water. Do not leave the product in contact with wet concrete, or on a surface with a very high moisture content, for a long period of time, before casting new concrete. These conditions will decrease the adhesion between the SikaSwell® S-2 bead and the surface of the joint.

 

CLEAN UP

Clean all tools and equipment immediately after use with Sika® Urethane Thinner and Cleaner. Once hardened, material can only be removed mechanically. Wash soiled hands and skin thoroughly in hot, soapy water or use Sika® Hand Cleaner towels.

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