SikaInject®-233
(former MasterInject® 1335)
PU-Based 1-Component Flexible Injection Foam
SikaInject®-233 is solvent free, single component polyurethane foam.
- Reacts in moist surroundings.
- Good bonding to wet surfaces.
- Stops running water.
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)
Colour
yellowish
Product Details
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)
Expansion
~20x - 30x (Max 10% CAT)
Application
Reaction time
| SikaInject®-233 / CAT | ||||
| Values with 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 |
- Reaction time depends not only on the temperature in the structure, but also on the temperature of the product itself
- Filling of large voids is recommended to build up 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 the works
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.