Mapei Planitop Smooth and Repair Zero Formerly R2

Mapei Planitop Smooth and Repair Zero (Rasa & Ripara) is an R2-class, rapid-setting shrinkage-compensated, thixotropic, fibre-reinforced, cementitious mortar applied in a single layer from 3 to 40 mm thick, for repairing and smoothing concrete.

Best Uses

Planitop Smooth & Repair Zero is a one-component, thixotropic mortar made from special hydraulic binders, fine selected aggregates, synthetic polyacrylonitrile fibres, synthetic polymers and special admixtures, according to a formula developed in the MAPEI Research & Development Laboratories. This R2 ranked mortar has excellent fatigue behaviour up to at least 300,000 cycles, which gives repaired structures a high level of resistance to cracking, including when subject to dynamic loads induced during normal service conditions.

Mapei Planitop Smooth and Repair Zero is ideal for non-structural repairs and smoothing layers on internal and external, horizontal and vertical concrete surfaces, suitable for repairing structures exposed to the open air and in permanent contact with water.

Some typical application examples include:

• Quick repairs to deteriorated parts of concrete, the corners of beams, pillars, buffer walls, cornices and the front edges of balconies
• Quickly smoothing over surface defects in cast concrete, such as honeycombs, spacer holes, construction joints, etc., before painting the surface
• Repairing and smoothing over concrete mouldings on civil buildings, such as skirt roofs and protruding decorative elements
• Repairing pre-cast concrete structures

Application

Preparation of the substrate

Remove deteriorated, detached and contaminated concrete until a solid, resistant, and rough substrate is obtained. Any previous restoration work and any other coatings that are not perfectly adherent must be removed using suitable equipment (mechanical breakers, hydro-scarification, etc.). Clean the concrete from residues of previous milling operations, and the reinforcement rods from dust, rust, cement slurry, grease, oil, paint, and other harmful materials, by sandblasting and treating with high pressure water.

After preparation, the concrete surface to be repaired must be visibly clean and rough, with a roughness of no less than 5 mm, and with the inert fraction open and completely exposed to allow the mortar to properly set and adhere to the sub-layer. Treat reinforcement rods with Mapei Mapefer or Mapei Mapefer 1K Zero, according to the procedure illustrated in the relative Technical Data Sheet for each product.

Wait until Mapefer or Mapefer 1K Zero has dried. Saturate the substrate with water. Before carrying out repairs with Planitop Smooth & Repair Zero, wait until excess water has evaporated off. If necessary, use compressed air to help remove excess water. The substrate must be saturated with water but with a dry surface.

Prepare and apply following guidance on the Product Data Sheet.

Mapei Zero Range

Mapei Planitop Smooth & Repair Zero is part of the CO Fully Offset in the Entire Life Cycle line of products. CO emissions measured throughout the life cycle of products from the Zero line in 2024 using Life Cycle Assessment (LCA) methodology, verified and certified with EPDs, have been offset through the acquisition of certified carbon credits in support of forestry protection projects.