
Sika MonoTop®-4012
Sika MonoTop®-4012 is a 1-part, cementitious, fibre reinforced, low shrinkage repair mortar. It contains recycled waste materials and can reduce the carbon footprint application activity calculations.
- Uses recycled waste materials
- Layer thickness 6–120 mm.
- Sulphate resistant
- Hand and machine application (wet spray technique)
- Easy to apply
- Very low shrinkage behaviour
- Does not require a bonding primer
- Low permeability
- A1 fire rating
- Class R4 of EN 1504-3
- 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 pf 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
Usage
Sika MonoTop®-4012 may only be used by experienced professionals. Repairs to all types of reinforced concrete structures and components for:- Buildings
- Civil engineering structures
- Marine structures
- Dams
- Structures requiring a Class R4, R3, R2 or R1 mortar
- Interior and exterior use
Advantages
- Uses recycled waste materials
- Layer thickness 6–120 mm.
- Sulphate resistant
- Hand and machine application (wet spray technique)
- Easy to apply
- Very low shrinkage behaviour
- Does not require a bonding primer
- Low permeability
- A1 fire rating
- Class R4 of EN 1504-3
- 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 pf 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
Packaging
25 kg bag
Colour
Grey powder
Product Details
ENVIRONMENTAL INFORMATION
- Conformity with LEED v4 MRc 2 (Option 1): Building Product Disclosure and Optimization – Environmental Product Declarations
- Conformity with LEED v4 MRc 3 (Option 2): Building Product Disclosure and Optimization - Sourcing of Raw Materials
- Conformity with LEED v4 MRc 4 (Option 2): Building Product Disclosure and Optimization - Material Ingredients
- IBU Environmental Product Declaration (EPD)
APPROVALS / STANDARDS
- CE Marking and Declaration of Performance to EN 1504-3 - Concrete repair product for structural repair
Chemical Base
Sulphate resistant and replacement cement, selected aggregates and additives
Shelf Life
12 months from date of production
Storage Conditions
The product must be stored in original, unopened and undamaged packaging in dry conditions at temperatures between +5 °C and +35 °C. Always refer to packaging.
Maximum Grain Size
Dmax: 2 mm
Soluble Chloride Ion Content
≤ 0,05 % | (EN 1015-17) |
System Structure
Bonding primer/ Reinforcement corrosion protection
Sika MonoTop®-1010 | Normal use |
SikaTop® Armatec®-110 EpoCem® | Demanding requirements |
Concrete repair mortar
Sika MonoTop®-4012 | High strength requirements |
Levelling mortar
Sika MonoTop®-3020 | Normal use |
Sikagard®-720 EpoCem® | Demanding requirements |
Compressive Strength
Class R4
Time | Compressive strength |
1 day | ~19 MPa |
7 days | ~43 MPa |
28 days | ~56 MPa |
Modulus of Elasticity in Compression
≥ 20 GPa | (EN 13412) |
Flexural Strength
Time | Tensile strength in flexure |
1 day | ~4,4 MPa |
7 days | ~7,0 MPa |
28 days | ~8,0 MPa |
Tensile adhesion strength
≥ 2,0 MPa | (EN 1542) |
Shrinkage
~500 μm/m (+20 °C / 65 % relative humidity at 28 days) | (EN 12617-4) |
Restrained Shrinkage / Expansion
≥ 2,0 MPa | (EN 12617-4) |
Coefficient of Thermal Expansion
~16 × 10–6 1/K | (EN 1770) |
Electrical Resistivity
< 100 kΩ·cm | (EN 12696) |
Thermal Compatibility
≥ 2,0 MPa (Part 1 - Freeze-Thaw) | (EN 13687-1) |
Chloride Ion Diffusion Resistance
Low - < 2000 coulombs | (ASTM C 1202) |
Chloride diffusion coefficient: 4,8 x 10-12 m2/s | (EN12390-11) |
Carbonation Resistance
dk ≤ control concrete MC (0,45) | (EN 13295) |
Reaction to Fire
Euro class A1 | (EN 1504-3 cl. 5.5) |
Application
Mixing Ratio
3,75 to 3,9 L of water for 25 kg bag
Fresh mortar density
~2,1 kg/l
Layer Thickness
Horizontal | min. 6 mm / max. 120 mm |
Vertical | min. 6 mm / max. 85 mm |
Ambient Air Temperature
+5 °C min. / +30 °C max.
Substrate Temperature
+5 °C min. / +30 °C max.
Pot Life
~60 minutes at +20 °C
Consumption
~2,10 kg/m2/mm
This figure is theoretical and does not allow for any additional material due to surface porosity, surface profile, variations in level, wastage or any other variations. Apply product to a test area to calculate the exact consumption for the specific substrate conditions and proposed application equipment.
Yield
25 kg of powder yields ~13,7 L of mortar
EQUIPMENT
Select the most appropriate equipment required for the project:
Substrate preparation equipment
- Mechanical hand-held tools
- High / ultra-high pressure water blasting equipment
Steel reinforcement equipment
- Abrasive blast cleaning equipment
- High pressure water blasting equipment
Mixing equipment
- Mixing Container.
- Small quantities: low speed electric single or double paddle mixer (< 500 rpm).
- Large quantities: Forced action mixer
Application equipment
- Hand applied: Plasterers hawk, trowel
- Wet Spray: All in one mixing and spraying machine or separate spraying machine and all associated ancillary equipment to suit application volumes
Finishing equipment
- Trowel (PVC or wooden)
- Sponge
Also refer to Site Handbook ‘Repair of Concrete Structures – Patch Repair and Spray Applications’
MIXING
Hand applied and wet spray application
- Pour the minimum recommended clean water quantity into a mixing container / equipment.
- While stirring slowly, add the powder to the water.
- Mix thoroughly for at least for 3 minutes adding additional water if necessary, to the maximum specified amount.
- Adjust to the required consistency to achieve a smooth consistent mix.
- Check the consistency after every mix.
APPLICATION
Strictly follow installation procedures as defined in method statements, application manuals and working instructions which must always be adjusted to the actual site conditions.
Reinforcement corrosion protection coating
- Where a reinforcement coating is required, apply to the whole exposed circumference Sika MonoTop®-1010 or SikaTop® Armatec® 110 EpoCem® (Refer to individual Product Data Sheet(s)).
Bonding primer
Note: On a well prepared and roughened substrate or for a sprayed application, a bonding primer is generally not required.
Note: When a bonding primer is required to achieve the required adhesion values, use Sika MonoTop®-1010 or SikaTop® Armatec® 110 EpoCem® (Refer to individual Product Data Sheets).
Repair Mortar
Manual application
IMPORTANT
The final pre-wetted surface must achieve a dark matt appearance (saturated surface dry).
IMPORTANT
To prevent sagging or slumping of ‘built up’ repair mortar layers. Allow each layer to slightly harden and remain wet before applying subsequent layers.
- Thoroughly pre-wet the prepared substrate (2 hours recommended) before application.
- Keep the surface wet and do not allow to dry.
- Remove excess water from within the surface pores and cavities e.g. with a clean sponge.
- Make a scratch coat using the repair mortar.
- Apply the scratch coat over the complete substrate surface to form a thin layer to fill surface pores or cavities.
- Apply the repair mortar onto the scratch coat ‘wet on wet’ at the minimum and maximum layer thicknesses without the formation of voids.
Sprayed application - Wet Spray
IMPORTANT
The final pre-wetted surface must achieve a dark matt appearance (saturated surface dry).
IMPORTANT
To prevent sagging or slumping of ‘built up’ repair mortar layers. Allow each layer to slightly harden and remain wet before applying subsequent layers.
- Thoroughly pre-wet the prepared substrate (2 hours recommended) before application.
- Keep the surface wet and do not allow to dry.
- Remove excess water from within the surface pores and cavities e.g. with a clean sponge.
- Place the wet mixed Sika MonoTop®-4012 into the spraying equipment.
- Spray the repair mortar onto the pre-wetted substrate between the minimum and maximum layer thicknesses without the formation of voids.
Surface finishing
IMPORTANT
Do not add water during the surface finishing as this can cause discolouration and cracking.
- Allow mortar to surface harden.
- Surface finish to the required surface texture using a stainless steel, steel, PVC or wooden float
Cold weather working
Consider storing bags in a warm environment and using warm water to assist with achieving strength gain and maintaining physical properties.
Hot weather working
Consider storing bags in a cool environment and using cold water to assist with controlling the exothermic reaction to reduce cracking and maintaining physical properties.
CURING TREATMENT
- Protect fresh mortar immediately from premature drying using an appropriate curing method, e.g. curing compound, moist geotextile membrane, polythene sheet, etc.
- Curing compounds must not be used when they could adversely affect subsequently applied products and systems.
CLEANING OF TOOLS
Clean all tools and application equipment with water immediately after use. Hardened material can only be mechanically removed.