Restauro R4
Premixed, single-component, anti-shrinkage, normal setting, pre-mixed mortar for concrete and reinforced concrete reconstruction and protection, PCC type and class R4 according to EN 1504-3.
Premixed, single-component, anti-shrinkage, normal setting, pre-mixed mortar for concrete and reinforced concrete reconstruction and protection, PCC type and class R4 according to EN 1504-3.
- High mechanical strength
- Excellent thixotropy
- Anti-shrinkage
- Applicable in thickness between 10 and 40 mm
Application areas
Choose Restauro R4 for
- Structural plasters;
- Reconstruction of the concrete cover;
- Rebuilding of reinforced concrete elements.
Application areas
Where Restauro R4 performs best
Discover more
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Details
Restauro R4 is a ready-to-use, fibre-reinforced mortar for vertical or ceiling application without the need for formwork, slightly expansive both in the plastic and post-hardening phases to counteract the formation of cracks. It is easy to apply either by hand or by spray with a suitable pump, even in layers of several centimetres without any signs of dripping. It guarantees high mechanical characteristics with particular reference to flexural strength, an important parameter for professional repairs of reinforced concrete. Restauro R4 is a product for the structural repair of concrete structures by means of hydraulic mortar of PCC type and class R4 according to EN 1504-3.
Instructions for use
Preparation for use
The application surfaces must be clean and and severely roughened. Remove cement residues and loose, crumbling, inconsistent parts until the sound, durable substrate is reached. Remove rust from the iron bars. If the section of the bars is weakened, supplement them with additional iron bars. Wash with a pressurized water jet. Apply water on the substrate until it is rejected. In the event of water seepage or water penetration, block these with quick-setting or very quick-setting mortars such as Umafix and Stop. For an effective adhesion on the substrate and/or corrosion protection of the reinforcement, apply Restauro Ferri (see the relative technical data sheet).
Instructions for application
Mix Restauro R4 with about 15-17% of water (equal to 3.75-4.25 litres of water per 25 kg bag) and stir for a few minutes until the mixture is homogeneous and free of lumps. Apply the mortar by hand with a masonry trowel or American trowel or by spraying with a suitable plastering machine. In the summer season, mix Restauro R4 with cold water and apply it away from the sun or protect it adequately from the direct sunlight. In places particularly exposed to ventilation and sunlight, mix Restauro R4 with 1:4 diluted Neoplast Latex – water solution and protect the applied mixture. For better adhesion of the fillings, it is advisable to spread on the substrate an adhesion grout made of Restauro R4 mixed with Neoplast Latex diluted in water 1:2 working fresh on the fresh substrate (see Neoplast Latex technical data sheet). Restauro R4 can also be applied by spraying with a suitable piston or worm plastering machine such as Turbosol or Putzmeister, with the exception of continuous mixing machines.
Cleaning
The tools used for laying can be cleaned with water before the mortar hardens; afterwards cleaning can be carried out only by mechanical removal.
Storage
Restauro R4 must be stored in a dry and sheltered place. In the original closed bags it is kept for at least 12 months. PROTECT FROM HUMIDITY.
Warnings
- To prevent cracks from forming in the plastic mortar due to too rapid evaporation of the mixing water and to ensure that the expansive action which cancels the effects of mortar shrinkage is carried out, the fillings and repairs carried out with Strutturale must be kept damp for at least 2 days by spraying the surface with nebulised water.
- For installation details (e.g. execution of edges, surface finishes), the rules of good engineering and precautions for the application of cement mortars must be observed.
- As with all cement-based products, never carry out work and applications at temperatures below +5 °C.
| Color | Code | Packaging | Packaging size | Pallet | Barcode |
|---|---|---|---|---|---|
| Grey | 5525 | bag | 25 kg |
50 bags
|
|
Restauro R4 is indicated for:
- Structural plasters;
- Reconstruction of the concrete cover;
- Rebuilding of reinforced concrete elements.
In accordance with EN 1504-9, the fields of application of Restauro R4 referred to in Principle 3 (Concrete Restoration), 4 (Structural Consolidation) and 7 (Preservation or Restoration of Passivity) by means of Methods 3.1, 3.2 and 3.3 (Application of Mortar by Hand), 4.4 (Addition of Mortar or Concrete) and 7.1 and 7.2 (Increase of concrete cover by Addition of Cement Mortar or Concrete).
| PARAMETER | VALUE | REQUEST EN 1504-3 |
| POWDER PRODUCT VARIATION | ||
| Consistency | Powder | |
| Bulk density (MIT 13*) | 1400 kg/m3 | |
| Particle size (EN 12192-1) | 0-3 mm | |
| Water-soluble chlorides (EN 1015-17) | ≤ 0.05% | ≤ 0.05% |
| FRESH MIXTURE VARIATION | ||
| Mixing water | 15 – 17 % (3.75-4.25 litres of water per 25 kg) | |
| Mixture density (EN 1015-6) | 2190 kg/m3 | |
| Mixture consistency | thixotropic | |
| Setting times (EN 196-3) setting start | approx. 4 hours | |
| Setting times (EN 196-3) setting end | approx. 5 hours | |
| Mixture workability time (EN 13395) | approx. 50 min | |
| Application temperature | from +5 °C to +30 °C | |
| Consumption | approx. 19 kg/m2 each cm of thickness | |
| HARDENED PRODUCT VARIATION | ||
| Operating temperature: | from -20 °C to +90 °C | |
| Flexural strength (EN 12190) after 28 days | 9 MPa | |
| Compressive strength (EN 12190) after 28 days | 60 MPa | ≥ 45 MPa |
| Compressive modulus of elasticity (EN 13412) | 24 GPa | ≥ 20 GPa |
| Adhesion bonding (EN 1542) | 2.5 MPa | ≥ 2.0 MPa |
| Resistance to carbonation (EN 13295) | Specification passed | dk ≤ control concrete |
| Shrinkage/expansion prevented (EN 12617-4) | 2.4 MPa | Bond strength after testing: ≥ 2.0 MPa |
| Thermal compatibility (freeze-thaw) (EN 13687-1) | 2.1 MPa | Bond strength after 50 cycles: ≥ 2.0 MPa |
| Capillary absorption (EN 106213057) | 0.1 kg/m2h0.5 | ≤ 0.5 kg/(m2 •h0.5) |
| Reaction to fire (EN 13501-1) | Class A1 | Manufacturer’s declared value |
| Product classification (EN 1504-3) | R4 PCC | |
1 MPa equals 1 N/mm2
* Torggler’s Internal Methods (MIT) are available on request.
The consumption of Resaturo R4 is approx. 19 kg/m2 each cm of thickness.
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