Sika MonoTop®-4100 Protect
Sika MonoTop®-4100 Protect is a one-part, cementitious, fibre reinforced, low shrinkage, R4 Classification concrete repair mortar. It is suitable for repairing, protecting and waterproofing concrete structures.
- Does not require a bonding primer ('all-in-one' product).
- Sulphate resistant.
- Layer thickness 4–60 mm.
- Hand and machine application (wet spray technique).
- Easy to apply.
- Very low shrinkage behaviour.
- Low permeability.
- Suitable for contact with drinking water.
- EuroClass A1 reaction to 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.
- Moisture control (Principle 2, method 2.3 of EN 1504-9) - Coating.
- Increasing resistivity (Principle 8, method 8.3 of EN 1504-9) - Coating.
Usage
Sika MonoTop®-4100 Protect may only be used by experienced professionals. Repairs, protects and waterproofs all types of reinforced concrete structures and components for:- Bridges
- Buildings
- Civil engineering structures
- Marine structures
- Dams
- Potable water structures
- Waste water systems unexposed to biogenic sulphuric acid corrosion (for areas subject to this, use Sika® MonoTop®-4400 MIC)
- Structures requiring a Class R4, R3, R2, R1 mortar
- Interior and exterior use
Advantages
- Does not require a bonding primer ('all-in-one' product).
- Sulphate resistant.
- Layer thickness 4–60 mm.
- Hand and machine application (wet spray technique).
- Easy to apply.
- Very low shrinkage behaviour.
- Low permeability.
- Suitable for contact with drinking water.
- EuroClass A1 reaction to 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.
- Moisture control (Principle 2, method 2.3 of EN 1504-9) - Coating.
- Increasing resistivity (Principle 8, method 8.3 of EN 1504-9) - Coating.
Packaging
25 kg bag
Colour
Grey powder
Product Details
APPROVALS / STANDARDS
- CE marking and Declaration of Performance to EN 1504-2 - Surface protection systems for concrete.
- CE marking and Declaration of Performance to EN 1504-3 - Concrete repair product for structural repair.
- CE marking and Declaration of Performance to EN 1504-7 - Reinforcement corrosion protection.
- Migration Analysis UNE EN 14944-3, Sika MonoTop®-4100 Protect, OtecRiera, Test Report No. 1004125495.
Product Declaration
Complies with the general requirements of EN 1504-3: Class R4.
Complies with the general requirements of EN 1504-2: Surface protection systems for concrete.
Complies with the general requirements of EN 1504-7: Reinforcement corrosion protection.
Chemical Base
Sulphate resistant cement, fibres, additives and selected aggregates
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: 2.0 mm
Soluble Chloride Ion Content
| ≤ 0.05 % | (EN 1015-17) |
Compressive Strength
| Time | Strength |
| 1 day | ~15 MPa |
| 7 days | ~40 MPa |
| 28 days | ~50 MPa |
Modulus of Elasticity in Compression
| ≥ 20 GPa | (EN 13412) |
Flexural Strength
| Time | Strength |
| 1 day | ~4 MPa |
| 7 days | ~5 MPa |
| 28 days | ~6 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) |
Capillary Absorption
| ≤ 0.1 kg·m-2·h-0.5 | (EN 1062-3) |
Water Penetration under Pressure
| ~10 mm | (EN 12390-8) |
Water Penetration under Negative Pressure
No humidity in the surface
Permeability to Water Vapour
| SD= 1 m, Class I | (EN ISO 7783) |
Carbonation Resistance
| dk ≤ control concrete MC (0.45) | (EN 13295) |
Reaction to Fire
| EuroClass A1 | (EN 1504-3 cl. 5.5) |
Application
Mixing Ratio
4.4 to 4.5 litres of water for 25 kg bag
Fresh mortar density
~2.1 kg/l
Layer Thickness
4 mm minimum / 60 mm maximum
Ambient Air Temperature
+5 °C minimum / +30 °C maximum
Substrate Temperature
+5 °C minimum / +30 °C maximum
Pot Life
~45 minutes at +20 °C
Consumption
~1.8 kg/m2/mm
Note: Consumption depends on the roughness and absorbency of the substrate.
This figure is theoretical and does not allow for any additional material due to surface porosity, surface profile, variations in level or wastage, etc.
Yield
25 kg of powder yields ~14 litres of mortar
EQUIPMENT
Select the most appropriate equipment required for the project:
Substrate Preparation
- Mechanical hand-held tools.
- High / ultra-high pressure waterblasting equipment.
Steel Reinforcement
- Abrasive blast cleaning equipment.
- High pressure waterblasting equipment.
Mixing
- Small quantities - low speed electric single or double paddle mixer (< 500 rpm). Mixing Container.
- Large quantities or machine application - suitable forced action mixer.
Application
- Hand applied - Plasterer's 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
- 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 quantity of clean water into a suitable mixing container / equipment. While stirring slowly, add the powder to the water and mix thoroughly for at least for 3 minutes, adding additional water if necessary to the maximum specified amount, and adjust to the required consistency to achieve a smooth, consistent mix. The consistency must be checked 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 either Sika MonoTop®-1010 or SikaTop® Armatec® 110 EpoCem® (refer to Product Data Sheet(s)).
Bonding Primer
On a well prepared and roughened substrate, or for a sprayed application, a bonding primer is generally not required. When a bonding primer is required to achieve the required adhesion values, use Sika MonoTop®-1010 or SikaTop® Armatec® 110 EpoCem® (refer to respective Product Data Sheet(s)). Apply repair mortar onto bonding primer “wet on wet”.
Repair Mortar
Hand Application
Thoroughly pre-wet the prepared substrate (2 hours recommended) before application. Keep the surface wet and do not allow to dry. Before application, remove excess water (e.g. with a clean sponge). The surface must appear dark matt in appearance without shining, and surface pores and cavities must not contain water.
When manually applying by hand, first make a scratch coat by firmly scraping the repair mortar over the substrate surface to form a thin layer and fill any pores or cavities in the surface. Ensure the whole surface to be repaired is covered by the scratch coat. The repair mortar must be applied onto the wet scratch coat between the minimum and maximum layer thicknesses without the formation of voids. Where layers are to be built up, to prevent sagging or slumping, each layer should be allowed to harden before applying subsequent layers “wet on wet”.
Sprayed Application - Wet Spray
The wet mixed Sika MonoTop®-4100 Protect must be placed into the spraying equipment and applied onto the pre-wetted substrate (pre-wet procedure as per hand application) between the minimum and maximum layer thicknesses without the formation of voids. Where layers are to be built up, to prevent sagging or slumping, each layer must be allowed to harden before applying subsequent layers “wet on wet”.
Surface Finishing
Finishing for all types of application must be carried out to the required surface texture using suitable finishing tools as soon as the mortar has started to harden.
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.