SURFACE PREPARATION OF CONCRETE
It is most important to ensure that thorough surface preparation is undertaken prior to application of the coating. All surfaces to be coated should be clean, dry and free from contamination. Ensure concrete is free from excessive laitance, grease, oil, curing compound, etc. Ensure concrete is sound, cutting back where necessary and making good using suitable ABADUR MP repair systems.
Concrete should be cured for a minimum of 28 days prior to coating. The moisture content of the concrete should be below 4%. All surfaces should be clean and dry. All Cracks and pinholes in the concrete shall be filled by ABADUR repair system.
Surface preparation shall not take place in following conditions:
- At temperature below 5 ºC.
- When the relative humidity is greater than 80%.
- When the surface temperature is less than 3 ºC above the dew point.
- Outside day light hours on exterior locations.
APPLICATION
Material is supplied in two containers as a unit. Always mix a complete unit in the proportion supplied. Once the unit has been mixed it must be used within the working Pot life specified.
- Agitate Part A and B separately with a power agitator.
- Combine entire contents of curing agent (part B) with base (part A) and mix thoroughly with power agitator.
- Mix thoroughly for at least three minutes, scraping the container bottom and side to assure complete mixing. There is no induction or waiting time required after mixing before application.
ABADUR-280 coating can be applied using good quality rollers or short haired brushes or by airless spray. For application by airless spray, use a 45:1 or higher ratio pump, minimum 9mm dia hoses and HD tip 19-23 thou. ABADUR-280 can be applied using good quality rollers or short haired brushes.
It is recommended that ABADUR-280 coating be applied in two coats to ensure complete coverage. Prior to the application of each coat the surface should be examined for signs of pin-holing, etc. Where pin-holing is evident these should be filled using ABADUR MP repair system.
If the over-coating is delayed more than the drying time table, the previous coat must be thoroughly abraded to give an adequate mechanical key and solvent wiped.
