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Repair mortar with structural fibre R4
Normal setting R4 fibre-reinforced thixotropic structural mortar
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Features
- Normal setting, low-shrinkage, R4 fibre-reinforced, one-component thixotropic mortar for structural repair.
- Made of special cements, aggregates with a specific granulometry, silica fume, polymers and reinforced with polypropylene fibres.
- Meets class R4 requirements under European Standard EN-1504-3.
- Setting time at 20 °C and 50 % RH, initial 3/4 hrs, final 7/8 hrs.
Advantages
- Manual or spray application.
- Excellent thixotropy. Takes applications with a thickness of up to 5 cm without sagging.
- Specially indicated for the structural repair of concrete without the need for formwork.
- Excellent adhesion to concrete and rebars. No need for special primers. The forces are transferred to the repaired area.
- High mechanical and impact strength.
- Good waterproofing and compactness.
- Suitable for contact with drinking water.
- Easy to use and apply. Only requires water for mixing and has excellent workability.
- Compensated shrinkage and no cracking.
- Free of chlorides and other elements corrosive to rebars.
- Odourless and non-toxic, suitable for repairs with little ventilation in galleries, water tanks etc.
Do not use leftovers from previous mixes.
Do not add fillers, aggregates or cements.
At temperatures above 25 °C, keep damp for 24 hours after application.
These instructions are merely recommendations based on our experience.
We recommend performing tests for each new type of application or surface to be treated.
Restores concrete structural elements, recovering their original form and function EN-1504-9.
Repairs prefabricated concrete structures and elements damaged by impact, corroded rebars, freeze/thaw cycles etc.
Repairs pillars, jambs, lintels, cornices, balcony overhangs and screeded floors in the restoration of architectural works permanently exposed to the elements.
Repairs horizontal concrete surfaces on floors, ramps and slabs, top coats in car parks, garages, pools, water-retaining structures etc.
Restores rebar passivation. Standard EN-1504-9 Principle 7 (RP) - Method 7.1 Increasing cover to reinforcement with additional cementitious mortar or concrete and Method 7.2 Replacing contaminated or carbonated concrete in:
Concrete structures with coatings below those indicated in the standard.
Repairs structures by replacing carbonated or contaminated concrete to restore the passivity of the rebars.
Preparation of the surface
Weak, damaged or deteriorated concrete must be removed down to a structurally strong substrate. Uncover the corroded rebars, removing the concrete until the exposed rebars are not affected. Clean the perimeters of the rebars so they can be covered with a thickness of at least 1 cm.
Remove the rust from the rebars and apply Passrepair, passivating primer art. PR01_5875100330, to prevent the formation of rust.
The surface must be clean and free from dust, grease, loose particles or any other substance that may negatively affect adhesion.
Preparation of the mixture
Mix a 25 kg container with 3.5/4 litres of clean water at low speed (400-600 rpm). Application: Saturate the surface with water without creating puddles.
Before applying, apply a slurry of the product mixed at 5 parts of the product to 1 part of water for optimal adhesion.
With the fresh slurry, apply the mortar mixture in coats from 5 to 50 mm. Clean tools with water after use.
Take the usual measures to ensure wet curing, such as spraying with water for at least the first 24 hours, covering with damp sackcloth and/or plastic film etc.
Storage
Maximum recommended storage time: One year in its original container, well sealed and sheltered from the elements (under cover at a temperature between 5 °C and 25 °C).
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