Mapei Mapegrout Fast Set (Mapegrout Rapido)
For repairing exterior vertical and horizontal deteriorated concrete surfaces.
Pack
25 kg bags
For repairing exterior vertical and horizontal deteriorated concrete surfaces.
Controlled-shrinkage, fibre-reinforced mortar, with rapid setting and hardening for the repair of concrete.
Use Mapegrout Fast-Set to repair damaged concrete surfaces such as balconies and the edges of beams and columns.
Mapegrout Fast-Set is composed of special hydraulic binders, selected aggregate, special additives and synthetic fibres, and is prepared by mixing a 25 kg bag with 3.5-3.75 litres of water.
Mapegrout Fast-Set must be applied within 10 minutes of preparation, by trowel onto a clean solid substrate, which has been previously soaked with water. Apply up to a maximum thickness of 20-25 mm per layer.
Mapegrout Fast-Set sets within 30-40 minutes at 20°C and is ready for use within a few hours after application.
Repairing exterior vertical and horizontal deteriorated concrete surfaces.
Mapegrout Fast-Set is a pre-blended powder made of special hydraulic binders, selected aggregates, special additives and synthetic fibres in a formula developed in MAPEI’s Research Laboratories.
Mixed with water, Mapegrout Fast-Set becomes an easily trowellable mortar with excellent thixotropic properties enabling it to be applied up to 2-2.5 cm thick on vertical surfaces without slump.
Mapegrout Fast-Set sets in 30 minutes and can be subjected to loads a few hours after application.
Once hardened, Mapegrout Fast-Set has the following properties:
Mapegrout Fast-Set meets the requirements defined by EN 1504-9 (“Products and systems for the protection and repair of concrete structures - Definitions, requirements, quality control and evaluation of conformity - General principles for the use of products and systems”) and the minimum requirements claimed by EN 1504-3 (“Structural and non structural repair”) for structural mortars of class R3.
| Consumption: | 18 kg/m2 per cm of thickness. |
| Packaging | 25 kg bags. |
| Packaged as: | MAPEGROUT RAPIDO |
| Technical Information for the Application | |
| Composition of mix: | 100 kg of Mapegrout Fast-Set 15-16 kg of water |
| Maximum layer thickness: | 20-25 mm |
| Application temperature range: | Environmental and substrate temperature from +5°C to +35°C |
| Pot life of mix: | approx. 10 mins. (at +20°C) |
| Waiting time between each layer: | approx. 15 mins. |
| Ready for use: | 2 – 3 hours |
A) Restoring deteriorated concrete structures
Remove all deteriorated, detaching or contaminated concrete until a rough, sound and resistant substrate is obtained. Remove any previous repair work or coating if not perfectly adhering to the substrate, using suitable tools (mechanical demolishing, hydroscarifying etc.)
Clean concrete from previous scarifying works and clean reinforcing rods from dust, cement laitance, rust, grease, oil, paint and other contaminants through sandblasting and high-pressure water jets. After preparation, the concrete surface to be repaired must be rough, with irregularities at least 5 mm deep and inert fraction exposed to allow correct adhesion of the mortar to the substrate.
Protect all reinforcing rods with Mapefer or Mapefer 1K.
Wet substrate with water
Wait for any excess water to evaporate before applying Mapegrout Fast-Set. Compressed air can be used, if necessary, to facilitate removal of unabsorbed water.
For better adhesion, it is advisable to brush on a coat of bonding slurry composed of 1 part of Mapegrout Fast-Set with 0.24-0.25 parts of water.
B) Repairing concrete flooring
Remove all damaged or loose concrete. Then chisel the edges of the repair area at right angles and clean it of all residues. After preparation, the concrete surface to be repaired must be rough with irregularities at least 5 mm deep and inert fraction exposed to allow correct adhesion of the mortar to the substrate.
Wet the substrate with water. If the substrate is particularly absorbent, brush on a coat of bonding slurry composed of 1 part Mapegrout Fast-Set with 0.24-0.25 parts water to avoid puddles.
While stirring, pour a 25-kg bag of Mapegrout Fast-Set into a container holding 3.75-4 litres (15-16%) of clean water and mix with an electric mixer until the product is smooth with no lumps.
Given Mapegrout Fast-Set’s quick setting time, prepare only sufficient product for use within 10 minutes (at +20°C). Instructions for the preparation of mortar for Lab testing samples can be found in the TECHNICAL DATA section.
A) Restoring deteriorated concrete structures
Apply the mix with a float or a trowel to the freshly slurried surface. Maximum thickness is 2-2.5 cm per layer. When particularly deep areas are to be repaired, apply several layers of Mapegrout Fast-Set at intervals of approx. 15 minutes, working each coat with a 10 mm notched trowel to improve adhesion between layers.
Once the repair work is finished, keep the restored patches damp for at least 24 hours.
Mapegrout Fast-Set can be painted with the products of the Elastocolor range after 3 days at +20°C
B) Repairing concrete flooring
Lay Mapegrout Fast-Set with a trowel on the freshly slurried surface and finish with a plastering trowel. After the application, protect the repaired surface from rapid water evaporation with sheets of polyethylene or wet bags. Mapegrout Fast-Set can be set for light traffic after approx. 3 hours at +20°C.
Before it hardens, Mapegrout Fast-Set can be cleaned from tools with water. After setting, residues can be removed by mechanical means.
