Mapei Mapefloor CPU / RT

Mapei Mapefloor CPU/RT is a three-component polyurethane / cement-based formulate used to create protective coatings on industrial floors subjected to heavy traffic, high chemical aggression, thermal shock, etc.

Best Uses

Mapei Mapefloor CPU/RT is a three component easy to apply high-strength polyurethane/cement-based mortar with high resistance to chemicals for coating industrial floors in layers from 6 to 9 mm thick. Complies with standards applied in the foodstuffs sector.

Some application examples:

• Coating floors in the chemical and pharmaceutical industries
• Coating floors in the foodstuffs industry
• Coating floors in the dairy products industry
• Coating floors in wineries, breweries and beverage industry in general

Mapefloor CPU/RT is a formulation made from cement, selected aggregates and polyurethane resin.

Mapefloor CPU/RT is used to create seamless coatings from 6 to 9 mm thick characterised by high resistance to chemicals such as acids, basic solutions, grease, saline solutions, hydrocarbons, etc. A 9 mm thick coat of Mapefloor CPU/RT has excellent resistance to thermal shocks of up to +120°C,
such as when steam cleaning is carried out. The in-service temperature for a 9 mm thick coating of Mapefloor CPU/RT varies from -40°C to +120°C in dry environments and up to +100°C in wet environments.

Thanks to its high mechanical strength and resistance to abrasion, Mapefloor CPU/RT is suitable for floors subjected to heavy traffic. Coatings made from Mapefloor CPU/RT are easy to clean and have a rough, non-slip finish.

COLOURS AVAILABLE
Mapefloor CPU/RT is a neutral-grey colour and must be coloured on site at the moment it is applied by adding Mapecolor CPU which is available in grey, beige, oxide red, green and ochre yellow.

Application

Preparation of the substrate
The surface of concrete floors must be dry or slightly damp, clean and sound and have no crumbling or detached portions. Concrete must have been poured at least 10 days before applying the coating, its compressive strength must be at least 25 N/mm² and its tensile strength must be at least 1.5 N/mm². The strength of the substrate must also be suitable for its final use and the types of load to which it will be subjected.

The surface of the floor must be prepared with a suitable process (e.g. shot-blasting or grinding) to remove all traces of dirt and cement laitance and crumbling or detached portions, and to make the surface rough and absorbent. Before applying the coating, remove all dust from the surface with a
vacuum cleaner.

Repair cracks by filling them with Mapei Eporip and repair areas of the concrete in poor condition with Mapefloor CPU/RT, Mapefloor EP19 or with a cementitious mortar from the Mapegrout range. Before applying Mapefloor CPU/RT remove all traces of dust from the surface with a vacuum cleaner. Create anchoring grooves around the edge of the area to be coated and in proximity to all vertical elements such as walls, pillars, cable troughs, drains, etc. Grooves must also be created if application of the coating is interrupted, such as alongside joints when work finishes for the day or when starting work again. The width and depth of the grooves must be around twice the thickness of the Mapefloor CPU/RT coating to be applied.

Application of primer 
Primer is not generally required. However, on particularly porous substrates where pin-holes are more likely to form as the product hardens, we recommend skimming the surface with a thin coat of Mapei Primer SN followed by full a broadcast of 0.9 mm quartz sand on the surface to saturate the porosity of the substrate. Please refer to the Technical Data Sheet of the product for further information on its use and application.

Preparation of the product
Pour component A into a large, clean container and, after mixing it, add component B and mix again with an electric mixer at low speed until it is completely blended.

Then add Mapecolor CPU powder colouring agent slowly and gradually (one 5 kg bag of Mapecolor CPU for every kit of Mapefloor CPU/RT A+B) and then slowly and gradually add all the content of component C and continue mixing until an even coloured mix is obtained. We recommend a specific low speed mortar mixer for this operation, such as a vertical mixer or a mixer with static blades and a rotating mixing drum. Apply the mix within the pot life indicated in the table (refers to a temperature of +20°C). Higher surrounding temperatures will reduce the pot life of the mix, while lower temperatures will increase its pot life.

Application of the product
Pour Mapefloor CPU/RT onto the floor and spread it out evenly to the thickness required with a smooth trowel or a notched float or a float with spacers. After spreading the coating, level and smooth off the surface with a long-bladed flooring trowel. If the surface of Mapefloor CPU/RT is worked too much it may cause the more fluid resinous part of the product to bleed through and make the coating less rough. We recommend applying the product so that each batch is applied immediately after the previous one while it is still wet and workable to reduce the number of joint marks.