Sikacrete-401 Rapid, Spray-applied concrete for large, quick repairs, Interior & Exterior, 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.

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Fast Setting Class R4 Dry Sprayed Micro-Concrete for Large Volume Repairs

Sikacrete-401 Rapid is a cement based, polymer modified, one-component, fast setting repair mortar containing silica fume and high range water-reducing agents, meeting the requirements of Class R4 of EN 1504-3. Formulated for machine applications using the dry spray process with set accelerators.

One component, ready to use.
Non-silica aggregates, so no risk of alkali silica reactivity (ASR).
Easy and quick to set up.
Low rebound losses and dust formation during the spraying process.
High build - layer thicknesses in one application overhead up to 100mm are possible without any additional mesh reinforcement.
Rapid strength gain.
Very low shrinkage.
Overcoatable with Sika reprofiling / levelling / smoothing mortars and coatings.
EN 1504-3 Class R4.
Fast Initial and final set times.
Ideal for limited possession work, or tidal applications.

Usage

Large scale repairs of weathered, cracked, spalling and / or damaged structural concrete.
Highway works.
Bridges (columns, piers, sofits, beams, parapets, abutments, etc.).
Marine structures (quays, piers, jetties, sea walls, docks, dry docks, marinas, offshore platforms, cofferdams, caissons, etc.).
New construction.
Lining and structural enhancement of mines and tunnels.
Viaducts and culverts.
Faςades and retaining walls.
Embankment and rock stabilisation.
Encasing steel sections.
Buildings.
Fire damaged structures.
Cooling towers, chimneys and pylons.
For exterior and interior use.
In place of Class R1, R2 and R3 mortars.
Particularly suited to limited possession and tidal works.

Concrete restoration (Principle 3, Method 3.3 of EN 1504-9): Restoring the original concrete to the originally specified profile and function. Restoring the concrete structure by replacing part of it by spraying concrete or mortar.
Structural strengthening (Principle 4, Method 4.4 of EN 1504-9): Increasing or restoring the structural load bearing capacity of an element of the concrete structure by adding mortar or concrete.

Advantages

One component, ready to use.
Non-silica aggregates, so no risk of alkali silica reactivity (ASR).
Easy and quick to set up.
Low rebound losses and dust formation during the spraying process.
High build - layer thicknesses in one application overhead up to 100mm are possible without any additional mesh reinforcement.
Rapid strength gain.
Very low shrinkage.
Overcoatable with Sika reprofiling / levelling / smoothing mortars and coatings.
EN 1504-3 Class R4.
Fast Initial and final set times.
Ideal for limited possession work, or tidal applications.

Packaging

25 kg bags

Colour

Grey powder

Technical Information

Compressive Strength

1 Day	~35 MPa
3 Days	~45 MPa
7 Days	~50 MPa
28 Days	~60 MPa

Modulus of Elasticity in Compression

~33 GPa

(EN 13412)

Flexural Strength

28 Days

~9 MPa

Tensile adhesion strength

>2.0 MPa

(EN 1542)

Coefficient of Thermal Expansion

13.5 x 10^-6 / ^oC

(EN 1770)

Electrical Resistivity

28 Days

~16 kΩcm

Capillary Absorption

~0.36 kg·m^-2·h^-0.5

(EN 13057)

Freeze Thaw De-Icing Salt Resistance

Good resistance with no visible changes after 50 cycles

(EN 13687-1)

Reaction to Fire

EuroClass A1

Application Information

Layer Thickness

Minimum 15mm / Maximum 150mm (Vertical) and 100mm (Overhead)

Ambient Air Temperature

Minimum +3^oC / Maximum +30^oC

Substrate Temperature

Minimum +3^oC / Maximum +30^oC

Initial set time

~12 minutes

(EN 13294)

Final set time

~16 minutes

(EN 13294)

NOTE: Typical set time at 20^oC.

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.

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General Specifications
Packaging	25 kg
Usage	Large scale repairs of weathered, cracked, spalling and/or damaged structural concrete (highway works, bridges, marine structures, new construction, tunnels, buildings, fire damaged structures)
Usage Area	Interior & Exterior
Color	Grey powder
Chemical Base	Portland cement, redispersable polymers, selected aggregates, silica fume and additives
Storage Conditions	Store properly in original unopened, sealed and undamaged packaging in dry and cool conditions
Density	1900 kg/m³
Application Thickness	15 mm >< 150 mm
Ambient Air Temperature	+3°C >< +30°C
Substrate Temperature	+3°C >< +30°C
Working time	12 minutes
Waiting Time	16 minutes
Consumption	2.3 kg/m²/mm

Fast Setting Class R4 Dry Sprayed Micro-Concrete for Large Volume Repairs

One component, ready to use.
Non-silica aggregates, so no risk of alkali silica reactivity (ASR).
Easy and quick to set up.
Low rebound losses and dust formation during the spraying process.
High build - layer thicknesses in one application overhead up to 100mm are possible without any additional mesh reinforcement.
Rapid strength gain.
Very low shrinkage.
Overcoatable with Sika reprofiling / levelling / smoothing mortars and coatings.
EN 1504-3 Class R4.
Fast Initial and final set times.
Ideal for limited possession work, or tidal applications.

Usage

Large scale repairs of weathered, cracked, spalling and / or damaged structural concrete.
Highway works.
Bridges (columns, piers, sofits, beams, parapets, abutments, etc.).
Marine structures (quays, piers, jetties, sea walls, docks, dry docks, marinas, offshore platforms, cofferdams, caissons, etc.).
New construction.
Lining and structural enhancement of mines and tunnels.
Viaducts and culverts.
Faςades and retaining walls.
Embankment and rock stabilisation.
Encasing steel sections.
Buildings.
Fire damaged structures.
Cooling towers, chimneys and pylons.
For exterior and interior use.
In place of Class R1, R2 and R3 mortars.
Particularly suited to limited possession and tidal works.

Concrete restoration (Principle 3, Method 3.3 of EN 1504-9): Restoring the original concrete to the originally specified profile and function. Restoring the concrete structure by replacing part of it by spraying concrete or mortar.
Structural strengthening (Principle 4, Method 4.4 of EN 1504-9): Increasing or restoring the structural load bearing capacity of an element of the concrete structure by adding mortar or concrete.

Advantages

One component, ready to use.
Non-silica aggregates, so no risk of alkali silica reactivity (ASR).
Easy and quick to set up.
Low rebound losses and dust formation during the spraying process.
High build - layer thicknesses in one application overhead up to 100mm are possible without any additional mesh reinforcement.
Rapid strength gain.
Very low shrinkage.
Overcoatable with Sika reprofiling / levelling / smoothing mortars and coatings.
EN 1504-3 Class R4.
Fast Initial and final set times.
Ideal for limited possession work, or tidal applications.

Packaging

25 kg bags

Colour

Grey powder

Technical Information

Compressive Strength

1 Day	~35 MPa
3 Days	~45 MPa
7 Days	~50 MPa
28 Days	~60 MPa

Modulus of Elasticity in Compression

~33 GPa

(EN 13412)

Flexural Strength

28 Days

~9 MPa

Tensile adhesion strength

>2.0 MPa

(EN 1542)

Coefficient of Thermal Expansion

13.5 x 10^-6 / ^oC

(EN 1770)

Electrical Resistivity

28 Days

~16 kΩcm

Capillary Absorption

~0.36 kg·m^-2·h^-0.5

(EN 13057)

Freeze Thaw De-Icing Salt Resistance

Good resistance with no visible changes after 50 cycles

(EN 13687-1)

Reaction to Fire

EuroClass A1

Application Information

Layer Thickness

Minimum 15mm / Maximum 150mm (Vertical) and 100mm (Overhead)

Ambient Air Temperature

Minimum +3^oC / Maximum +30^oC

Substrate Temperature

Minimum +3^oC / Maximum +30^oC

Initial set time

~12 minutes

(EN 13294)

Final set time

~16 minutes

(EN 13294)

NOTE: Typical set time at 20^oC.