Product Data Sheet
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Sika® Injection-101 US

Expanding Polyurethane Injection Foam Used for Watertight Sealing

Sika® Injection-101 US is a 2-part, polyurethane, low viscous, fast foaming, water-reactive injection resin. It cures to a dense flexible foam.

  • Foaming reaction only takes place in direct contact with water
  • Can be injected as a single component system
  • Free foaming expansion up to 40 times
  • The reaction rate (foam formation) is influenced by the temperature of the mixed materials, by the type of structure, contact with water, and hydrodynamic conditions.
Product Data Sheet
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Usage

  • Waterstopping of high water intrusions in cracks, joints and cavities in concrete and masonry.
  • Waterstopping in special applications such as bored or sheet pile walls, anchor heads and microtunneling.
 

Advantages

  • Foaming reaction only takes place in direct contact with water
  • Can be injected as a single component system
  • Free foaming expansion up to 40 times
  • The reaction rate (foam formation) is influenced by the temperature of the mixed materials, by the type of structure, contact with water, and hydrodynamic conditions.

Packaging

Part A (Resin)1.79 gal
Part B (Hardener)1.79 gal

Refer to current price list for packaging variations.

Color

Part AColorless
Part BBrown

Product Details

Product Information

Chemical Base

Water reactive polyurethane resin

Shelf Life

12 months from date of production

Storage Conditions

The product must be stored in original, unopened and undamaged packaging in dry conditions at temperatures between +40 °F and +95 °F. Always refer to packaging.

Density

Part A~8.67 lb/gal
Part B~10.34 lb/gal

Values at +73 °F

Viscosity

Part A (Resin)

~230 cP

Part B (Hardener)

~290 cP

Values at +73 °F
Technical Information

Expansion

Expansion start~16 seconds after contact with water
Expansion end~70 seconds

Values at +73 °F

Application

Application Information

Mixing Ratio

Part A : Part B =  1:1 by volume

Ambient Air Temperature

+40 °F min. / +95 °F max.

Substrate Temperature

+40 °F min. / +95 °F max.

Pot Life

~1 hours (at + 70 °F)

If skin forms on the surface of the product, remove it. Do Not Mix.
Application steps

MIXING

Add components A and B into an appropriate container and mix them slowly for 30 seconds until a homogeneous mixture is obtained, observing safety precautions. The product is supplied in packages with the indicated mixing ratio of 1:1 by volume.


Partial quantities can be measured and placed in separate containers. After mixing, pour the material into the pump’s feed container, stir briefly, and use within the pot life.

CLEANING OF TOOLS

Clean all tools and application equipment using the Xylene to remove polyurethane residues immediately after use. Do not leave the cleaner in the injection pump. The cured / hardened product can only be removed mechanically.

 

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