Product Data Sheet Show all documents

SikaInject®-233

(former MInject 1335)

PU-Based 1-Component Flexible Injection Foam

SikaInject®-233 is solvent free, single component polyurethane foam.
Suitable for use in hot and tropical climatic conditions. 

  • Reacts in moist surroundings.
  • Good bonding to wet surfaces.
  • Stops running water.
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Product Data Sheet Show all documents

Usage

  • Pre-injection of cracks and joints in concrete
  • Stopping of flowing water / leaking water through voids, cracks and joints in concrete structures
  • Cavity-filling (water bearing)
 

Advantages

  • Reacts in moist surroundings.
  • Good bonding to wet surfaces.
  • Stops running water.

Packaging

1 L kit:

1.055 kg (Base resin)
0.105 kg (CAT, 10 %, = maximum recommended)

Note: Accelerator (CAT) dosage can be varied to suite site conditions.

Colour

Yellowish

Product Details

Product Information

Shelf life

12 months from date of production

Storage conditions

Store in original, unopened and undamaged sealed packaging in dry conditions at temperature between +5 °C and +35 °C

Density

~1.16 kg/l (20 °C)

Viscosity

~700 - 900 cps (25 °C)
Technical Information

Expansion

~20x – 30x (Max. 10 % CAT)

 

Application

Application Information

Reaction time

SikaInject®-233 / CAT
Values with 10 % Cat
Initial Temperature (°C)+5+10+15+20
Reaction Start (sec)130653015
Reaction End (sec)35025012060
Free Foaming Factor20252530
  • Reaction time depends not only by the temperature of the structure, but also by the temperature of the product itself
  • For filling of large voids it is recommended to apply in layers
  • The examples of reaction times with the maximum accelerator dosage (see table) have been measured in the laboratory
  • However, it is advisable to check the required reaction time on site
  • Site trials should always be performed prior to commencing of the works
Application steps

EQUIPMENT

Use injection pumps suitable for single part injection products.

 

APPLICATION

WET CONDITIONS:

  • Add 2 % – 10 % CAT (depending on the required reaction time) to SikaInject®-233 (base resin)
  • Mix quickly and thoroughly
  • Inject this mixture through a 1-component injection pump
  • Moisture / water in ground or structure will initiate the foaming reaction
     

DRY CONDITIONS:

  • Flush cracks and voids with water prior to injecting
  • Follow the standard procedure as in wet conditions 

CLEANING OF EQUIPMENT

Clean all tools and application equipment as soon as possible and in accordance the Product Data Sheet for the Sika® Injection Cleaning System.

Alternatively Sika® Colma Cleaner can be used to remove any polyurethane residue immediately after use. Do not leave Sika® Colma Cleaner in the injection pump.

Hardened / cured material can only be removed mechanically.

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