PRODUCT PROPERTIES:
- One-component, polyurethane-based injection foam.
- Expands when in contact with water.
- Adjustable reaction time.
- Excellent bonding also to wet crack surfaces.
- Long pot life.
- Non shrinking.
- REACH-assessed exposure scenarios: periodical inhalation, application.
AREAS OF APPLICATION:
- Injection of cracks and cavities, injection against flowing water.
- Injection of tunnels and deep constructions.
- Injection on drilled piles, HDI-, sheet pile- and slotted-walls.
PRODUCT CHARACTERISTICS:
| Colour | Brown |
| Delivery | MC-Injekt 2088: 25 kg and 200 kg pack
MC-Injekt 2088 CAT: 2.5 kg and 10 kg pack |
| Storage | Can be stored in original sealed packs at temperatures between + 5°C and + 35°C in dry conditions for at least 18 months. The same requirements are valid for transport. |
| Cleaning agent | Within the pot life all equipment may be cleaned with MC-Verdünnung PU (MC-Thinner PU). Partially or completely cured material can only be removed mechanically. Water or water-based cleaning agents must not be used under any circumstances. |
| Disposal | Packs must be emptied completely. |
TECHNICAL DATA:
| Characteristic | Unit | Value | Comments |
| Mixing ration | p.b.w. | 10 : 0.033 – 10 : 1 | Component A : MC-Injekt 2088 CAT |
| Density | kg/dm³ | 1.15 | Mixture |
| Viscosity | mPa·s | 400 | DIN EN ISO 3219 |
| Application time | hours | 6 – 8 | |
| Application temperature | °C | + 5 – + 35 | Air, substrate and material temperature |
| Volume expansion with 5 % water without counter pressure | % | 1.000 – 2.000 | At 20°C and 50 % rel. humidity |
* All technical values relate to 21±2 °C and 50 % relative humidity.
APPLICATION NOTES:
- Preparation: Before injection the structure’s voids and cracks have to be inspected according to technical standards and regulations, and an injection concept is to be planed.
- Mixing: MC-Injekt 2088 consists of a one component injection resin, which is adjusted with the catalyst MC-Injekt 2088 CAT to the required reaction time.
| Catalyst quantity | Reaction time (min.) |
| 0.33 % | 50 |
| 1.67 % | 11 |
| 3.33 % | 6 |
| 5.00 % | 5 |
| 6.67 % | 4 |
| 10.00 % | 3.5 |
- Reaction time depends on concentration of the catalyst (at 23 °C and 75 % rel. humidity).
- The pot life of the mixed components is about 6 – 8 hours provided that there is no contact with water and atmospheric humidity.
- If a skin forms on the top of the mixed material due to humidity, the liquid material underneath the skin can still be used.
- Injection:
– The injection can be executed with the injection pump MC-I 510 (1-component pump).
– Injection with MC-Injekt 2088 should be effected in intervals depending on site conditions to allow the foam enough time to react. Within a few minutes further injection requirements can be determined from the visible water penetration developed from the injection pressure.
– MC-Injekt 2300 top / 2300 rapid or MC-Injekt 2300 NV must follow to permanently seal the crack.
– Work with MC-Injekt 2088 must be stopped at temperatures below + 5°C. - Machine Cleaning: Within the pot life all equipment may be cleaned with MC-Verdünnung PU (MC-Thinner PU). Partially or completely cured material can only be removed mechanically.
