Sika MonoTop-4052, High-Performance Sustainable Repair Mortar for Horizontal Surfaces, Interior & Exterior, Light Grey Powder, 25 kg

Category: Cement & Mortar

SIKA

Sika is a global leader in specialty chemicals for the construction and industrial sectors. The company develops and supplies innovative products and systems for bonding, sealing, damping, reinforcing, and protecting structures. With a strong focus on sustainability and performance, Sika serves a wide range of applications including concrete production, waterproofing, roofing, flooring, and structural strengthening.

This combination does not exist.

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).

Packaging

25 kg

Colour

Light grey powder

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

≥2.0 MPa

(EN 1542)

Shrinkage

Cured at +20 °C and 60% relative humidity for 28 days

600 μm/m

Restrained Shrinkage / Expansion

≥2.0 MPa

(EN 12617-4)

Coefficient of Thermal Expansion

3.2 × 10⁻⁵ 1/K

(EN 1770)

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)

Permeability to CO2

Sd	30.8 m
μ	3.056

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

At +20 °C

~30 minutes

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.

Preview TDS

Download TDS

General Specifications
Packaging	25 kg
Usage	Repair and strengthen reinforced concrete in buildings and infrastructure
Usage Area	Interior & Exterior
Color	Light grey powder
Chemical Base	Selected cement, aggregates and additives
Storage Conditions	+5 °C to +35 °C - Store in original, unopened, undamaged packaging in dry conditions. Always refer to packaging
Density	2.2 kg/L
Application Thickness	6 mm >< 120 mm
Ambient Air Temperature	+5°C >< +30°C
Substrate Temperature	+5°C >< +30°C
Working time	30 minutes
Waiting Time	N/A
Consumption	1.9 kg/m²

High-performance structural concrete repair mortar and screed with improved sustainability, designed for horizontal surfaces

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).

Packaging

25 kg

Colour

Light grey powder

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

≥2.0 MPa

(EN 1542)

Shrinkage

Cured at +20 °C and 60% relative humidity for 28 days

600 μm/m

Restrained Shrinkage / Expansion

≥2.0 MPa

(EN 12617-4)

Coefficient of Thermal Expansion

3.2 × 10⁻⁵ 1/K

(EN 1770)

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)

Permeability to CO2

Sd	30.8 m
μ	3.056

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

At +20 °C

~30 minutes

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').

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.