High-performance structural concrete repair mortar and screed with improved sustainability, designed for horizontal surfaces
Sika MonoTop®-4052 is a one-part, cementitious, fibre-reinforced concrete repair mortar and screed. It contains recycled supplementary cementitious materials and can therefore contribute to reducing the carbon footprint of the application.
-
Uses recycled raw materials.
-
Layer thickness 6 to 120 mm.
-
Low drying shrinkage and very low sensitivity to cracking (can be applied up to 300 m
2
without joints).
-
Sulphate-resistant.
-
Suitable for internal and external applications.
|
Usage
The Product is used to repair all types of reinforced concrete structures and components for:
- Buildings
- Car park decks
- Civil engineering structures
- Dams and bridges
- Marine structures
Sika MonoTop®-4052 is used for:
- Restoration work (Principle 3, method 3.1 and 3.3 of EN 1504-9). Repair of spalling and damaged concrete in infrastructure and superstructure works.
- Structural strengthening (Principle 4, method 4.4 of EN 1504-9). Increasing the bearing capacity of the concrete structure by adding mortar.
- Preserving or restoring passivity (Principle 7, method 7.1 and 7.2 of EN 1504-9). Increasing cover with additional mortar and replacing contaminated or carbonated concrete.
Advantages
- Uses recycled raw materials.
- Layer thickness 6 to 120 mm.
- Low drying shrinkage and very low sensitivity to cracking (can be applied up to 300 m2 without joints).
- Sulphate-resistant.
- Suitable for internal and external applications.
- Contains corrosion inhibitors.
- Compatible with cathodic protection systems.
- Application by hand, or by machine.
- Easy to apply - effortlessly levels when worked, ideal pot life and smooth finishing.
- High abrasion resistance (when used with Sikafloor®-140 W Troweling Primer).
- Dust-reduced for cleaner, healthier environment.
- Good resistance to sea water.
- Low permeability.
- Excellent freeze-thaw resistance.
- EuroClass A1 reaction to fire rating.
- Class R4 of EN 1504-3.
- Class CT-C60-F8-A9 of EN 13813.
- Early troweling after 3 hours at +20 °C.
- Overcoatable with epoxy after only 24 hours (when Sikafloor®-140 W Troweling Primer is used and the Product is maintained at >+10°C).
- Can be trafficked directly when installed with Sikafloor®-140 W Troweling Primer (it is recommended that the surface is sealed with a Product from the Sikafloor® ProSeal Range to prevent staining, which can also act as a curing agent if not overcoating).
|
Technical Information
Compressive Strength
| Cured 24 hours at +21 °C | ~35 MPa | | Cured 7 days at +21 °C | ~55 MPa | | Cured 28 days at +21 °C | ~60 MPa |
Modulus of Elasticity in Compression
| Cured 28 days at +21 °C | ≥20 GPa |
Flexural Strength
| Conditioned 24 hours at +20 °C | ~6 MPa | | Conditioned 7 days at +20 °C | ~7 MPa | | Conditioned 28 days at +20 °C | ~8 MPa |
Tensile adhesion strength
Shrinkage
| Cured at +20 °C and 60% relative humidity for 28 days | 600 μm/m |
Restrained Shrinkage / Expansion
Coefficient of Thermal Expansion
Electrical Resistivity
| Tested at 60% relative humidity | <20 kΩ·cm | | Tested at 100% relative humidity | <40 kΩ·cm |
Thermal Compatibility
| Part 1 - Freeze-Thaw | ≥2.0 MPa |
Capillary Absorption
| ≤0.15 kg⋅m-2⋅h-0.5 | (EN 13057) |
Carbonation Resistance
| dk ≤ control concrete MC (0.45) | (EN 13295) |
Reaction to Fire
| EuroClass A1 | (EN 13501-1) |
|
Application Information
Fresh mortar density
~2.2 kg/l
Layer Thickness
| Maximum | 120 mm | | Minimum | 6 mm |
Product Temperature
| Maximum | +30 °C | | Minimum | +5 °C |
Ambient Air Temperature
| Maximum | +30 °C | | Minimum | +5 °C |
Mixing Ratio
| Per 25 kg bag | 3.4 to 3.6 Litres |
Substrate Temperature
| Maximum | +30 °C | | Minimum | +5 °C |
Pot Life
Pot life depends on temperature.
NOTE: Pot life will be shorter at higher temperatures. Pot life will be longer at lower temperatures.
Waiting Time / Overcoating
| Layer | Product | Waiting Times (at +20 oC) | | Bonding Primer / Reinforcement Corrosion Protection* | Sika MonoTop®-1010 (normal applications) SikaTop® Armatec®-110 EpoCem® (demanding applications, such as high chloride exposure) | Pre-wet substrate for at least 2 hours to achieve saturated surface dry (SSD) condition before applying Bonding Primer. | | Concrete Repair Mortar | Sika MonoTop®-4052 | Apply 'wet-on-wet' onto Bonding Primer. | | Troweling Primer | Sikafloor®-140 W Troweling Primer | When walkable (~2 to 4 hours), apply troweling primer and start troweling within 10 minutes. | | Wearing Course Primer** | Sikafloor®-151 (with or without Sikafloor®-54 Booster) | 24 hours to 5 days*** after troweling (remove polythene curing sheets 30 to 60 minutes before application). | | Wearing Course / Coating** | Sikafloor® epoxy and polyurethane coatings (e.g. Sikafloor®-390 N) | After hardening of the Epoxy Primer. |
* For very demanding applications (e.g. HGV trafficking) Sikadur®-32+ can be used as a bonding primer (Sika MonoTop®-4052 applied 'wet-on-wet').
** If required. Sika MonoTop®-4052 can be left exposed and trafficked directly if installed with Sikafloor®-140 W Troweling Primer and cured for a minimum period of 48 hours. To prevent staining, it is recommended the surface is sealed with a Product from the Sikafloor® ProSeal Range (which can also act as a curing agent if not overcoating).
*** If the Epoxy Primer is not applied within 5 days, the surface of Sika MonoTop®-4052 must be prepared mechanically using suitable means to remove cement laitance, coatings or other surface treatments, and achieve an open textured, gripping surface.
NOTE: The above information is based on a temperature of +20 °C. The Product must be kept >+10 °C for a minimum period of 24 hours to enable fast epoxy overcoating.
NOTE: The above is a guide. Always refer to individual Product Data Sheets.
|
The above design is only a sample of the options available, for reference purposes only. Our policy of continuous improvement may result in a change of specifications without notice. If any discrepencies might be between the data sheet values and standards, we reserve the rights to make technical changes. Our company will not be held responsible, as all or any of pictures, drawings, weights and dimensions details or other elements in this document are only indicative and must not be considered contractual. Contact our sales team for other specifications or custom made products.
Contact our sales team for other specifications or custom made products.
