Product Data Sheet
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Sika® Injection-216

Structural polyurethane injection resin

Sika® Injection-216 is a two-component polyurethane structural injection resin specifically formulated for crack injection work by pressure injection.

Sika® Injection-216 provides the following characteristics and benefits:
  • Very good adhesion to concrete, masonry and stone
  • Suitable for dry, damp and wet conditions
  • Very high mechanical properties
  • Fast curing with or without water contact
  • Suitable for 1-component or 2-component injection pumps
  • Compatible with concrete, mortar, metal, plastic coated components, cable coatings, etc.
  • Resistant to salts, alkali and acids present in construction components or in the ground
  • Prevents the ingress of water and infiltration which can cause reinforcement corrosion
Product Data Sheet
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Usage

Sika® Injection-216 can be used for filling and sealing voids and cracks in structures and construction elements such as:
  • Bridges
  • Civil engineering structures
  • Tunnels
  • Mines
  • Industrial and residential buildings
  • Water retaining structures
  • Ground stabilisation
  • Columns
  • Beams
  • Foundations
  • Walls
  • Floors
 

Advantages

Sika® Injection-216 provides the following characteristics and benefits:
  • Very good adhesion to concrete, masonry and stone
  • Suitable for dry, damp and wet conditions
  • Very high mechanical properties
  • Fast curing with or without water contact
  • Suitable for 1-component or 2-component injection pumps
  • Compatible with concrete, mortar, metal, plastic coated components, cable coatings, etc.
  • Resistant to salts, alkali and acids present in construction components or in the ground
  • Prevents the ingress of water and infiltration which can cause reinforcement corrosion

Packaging

Part A

9.9 kg

Part B

12 kg

Colour

Part A

Yellowish

Part B

Brown

A + B Mixed

~ Amber

Product Details

Sustainability / Certifications / Approvals

APPROVALS / CERTIFICATES

  • CE Marking and Declaration of Performance to EN 1504-5 - Concrete injection
  • Drinking Water Approval, Sika® Injection-216, KTW- B, LADR
Product Information

Composition / Manufacturing

Polyurethane

Shelf Life

24 months from date of production

Storage Conditions

The product must be stored in original, unopened and undamaged sealed packaging in dry conditions at temperatures between 5 °C and 35 °C. Always refer to packaging.

Density

Part A

~1.0 kg/L

Part B

~1.2 kg/L

Viscosity

~425 cps (at 23 °C)
Technical Information

Compressive Strength

7 days

~70 MPa 

Tensile Strength

7 days

~30 MPa 

Reaction to Fire

B2

(DIN 4102-4)

Chemical Resistance

Resistant to salts, alkali and acids present in construction components or in the ground. Contact Sika Technical Services for additional information.

Application

Application Information

Mixing Ratio

A : B = 1 : 1 by volume

A : B = 1 : 1.2 by weight

Substrate Temperature

> 1 °C

Pot Life

Temperature (°C)

Time (min)

10

~50

20

~25

30

~10

The pot life begins when Parts A+B are mixed. It is shorter at high temperatures and longer at low temperatures. The greater the quantity mixed, the shorter the pot life. To obtain longer workability at high temperatures, chill Parts A+B before mixing (not below 5 °C).
Application steps

SUBSTRATE QUALITY

Crack injection: concrete / masonry

  • The substrate surface along the line of the crack capping sealer (i.e. Sikadur®-31 Hid-Mod Gel), must be sound, clean, dry or saturated surface-dry (SSD) condition.
  • It must also be free from standing water, ice, dirt, oil, grease, coatings, laitance, efflorescence, old surface treatments, all loose particles and any other surface contaminants that could affect adhesion of the capping sealer.

SUBSTRATE PREPARATION

Crack injection: concrete / masonry

  • Cracks may be dry, damp, or wet, but free from standing water.
  • After inserting or bonding packers, cap the crack with a capping sealer (i.e. Sikadur®-31 Hi-Mod Gel) and allow to cure.
  • Remove contaminants by purging the crack with water until the discharged water is clean and free of contaminants.
  • Remove any standing water using oil-free compressed air. 

MIXING

Important:

  • Mix full units only.
  • Avoid over-mixing to minimise air entrainment.
  • Use a low-speed electric single-paddle mixer (300–400 rpm) for mixing.
  • Mix only the quantity that can be used within its pot life.

  

1-Component pump

  1. Add Parts A + B into a clean, dry mixing container.
  2. Mix Parts A + B continuously for ~two (2) minutes until a uniformly coloured mix is achieved.
  3. Add mixed resin into the pump's hopper.
 

2-Component pump

  1. Add Part A and Part B into the 2 separate pump dispensers.
  2. Set the metering ratio of the pump to: A : B = 1 : 1 by volume A : B = 1 : 1.2 by weight
  3. Parts A + B will be mixed automatically by the pump's mixing head (static-mixing element).

CLEAN UP

  • Clean all tools, equipment and non-cured resin using SikaInject® Cleaner C1 or any other solvent recommended by the injection pump manufacturer. Refer to the Product Data Sheet.
  • Hardened material can only be mechanically removed.

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