Product Data Sheet Show all documents

SikaInject®-155 DW

PU-Based Flexible 1-Component Injection Foam

SikaInject® -155 DW is a solvent-free, 1-component polyurethane foam which reacts in contact with humidity or water. The system consists of a base resin and an accelerator (catalylst, CAT). SikaInject® -155 DW is certified for contact with drinking water and fulfills the requirements of EN 1504-5 for waterproofing of cracked concrete and leaking joints.

  • Reacts in moist surroundings
  • Good bonding to wet surfaces
  • Forms a flexible foam
  • EN 1504-5, System 4, U(S1) W(5) (2/3/4) (5/40)
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Product Data Sheet Show all documents

Usage

  • Stopping of small to mid-volume water-ingress in underground structures
  • Filling of water-bearing voids
  • Permanent waterproofing of cracks and joints
 

Advantages

  • Reacts in moist surroundings
  • Good bonding to wet surfaces
  • Forms a flexible foam
  • EN 1504-5, System 4, U(S1) W(5) (2/3/4) (5/40)

Packaging

25 kg (base resin) 2.5 kg (accelerator)

Colour

Yellowish (Base Resin) Clear to yellowish (Accelerator)

Product Details

Product Information

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 temperature between +10 °C and +25 °C

Density

1.16 kg/L (Base Resin) 0.98 kg/L (Accelerator)

Viscosity

700 mPa.s (Base Resin) 320 mPa.s (Accelerator)
Technical Information

Expansion

20-30 times (10% accelerator)

 

Application

Application Information

Ambient Air Temperature

+5 °C min. / +35 °C max.

Substrate Temperature

+5 °C min. / +35 °C max.

Reaction time

Reaction time depends on ground temperature and product temperature, as well as accelerator dosage (see table). Site trials should be performed in advance to establish the required reaction time.

SikaInject-155 DW / Cat

Values with 10% water and 10 % Cat

Initial Temperature (°C)

+5

+10

+15

+20

Reaction Start (sec)

130

65

30

15

Reaction End (sec)

350

250

120

60

Free Foaming Factor

20

25

25

30
Application steps

MIXING

  • Ad the accelerator to SikaInject®-155 DW

  • Up to 10% depending on required reaction time

  • Mix quickly and thoroughly

  • Inject the mix by using a 1-C-pump

  • Groundwater/ -moisture initiates the foaming reaction

  • In case of dry ground, flush the borehole with water prior to injection

CLEANING OF TOOLS

During short breaks in injection procedure, pump and hoses should be filled with non-accelerated resin to avoid blockages. After injection process pump cleaning agent (e.g. SikaInject®-CL2) or waterfree hydraulic oil through pump and hoses until SikaInject®-155 DW is

 

completely washed out. Store pump and hoses filled with cleaning agent or oil and seal all openings.

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