Sika MonoTop®-4200 Multi Flow
Cementitious multi-purpose applied concrete repair mortar
Sika MonoTop®-4200 Multi Flow is a cementitious,1-part, hand, flowable or machine applied, structural, sulphate resistant concrete repair mortar with high initial and final strengths. Suitable for repairing all types of reinforced concrete buildings, civil engineering and marine structures. Layer thickness up to 80 mm. Flowable up to 60 mm.
- High early and final compressive strengths
- Sulphate resistant
- Good adhesion to concrete, mortar, stone and brick substrates
- Good abrasion resistance
- Very low shrinkage
- Good surface finishing
- Ready to mix with water
- Excellent workability
- Applied manually or mechanically (wet spray)
- High pH passivates steel reinforcement
- Does not contain chlorides or other corrosion promoting additives
Usage
Sika MonoTop®-4200 Multi Flow may only be used by experienced professionals.- Repair of spalling and damaged concrete in infrastructure and superstructure works. Restoration work (Principle 3, method 3.1, 3.2 and 3.3 of EN 1504-9).
- Increasing the bearing capacity of the concrete structure by adding mortar. Structural strengthening (Principle 4, method 4.4 pf EN 1504-9).
- Increasing cover with additional mortar and replacing contaminated or carbonated concrete. Preserving or restoring passivity (Principle 7, method 7.1 and 7.2 of EN 1504-9)
- Repairs to reinforced concrete structures requiring a Class R4, R3, R2, R1 mortar
- Horizontal,vertical and overhead repairs
Advantages
- High early and final compressive strengths
- Sulphate resistant
- Good adhesion to concrete, mortar, stone and brick substrates
- Good abrasion resistance
- Very low shrinkage
- Good surface finishing
- Ready to mix with water
- Excellent workability
- Applied manually or mechanically (wet spray)
- High pH passivates steel reinforcement
- Does not contain chlorides or other corrosion promoting additives
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
APPROVALS / STANDARDS
- CE Marking and Declaration of Performance to EN 1504-3 - Concrete repair product for structural repair
Chemical Base
Sulphate resistant cement, fibres, additives and selected aggregates.
Shelf Life
12 months from date of production
Storage Conditions
Product must be stored in original, unopened and undamaged sealed 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) |
Product Declaration
Complies with the general requirements of EN 1504-3: Class R4
System Structure
| Reinforcement Corrosion Protection/ Bonding Primer | |
| Sika MonoTop®-1010 | Normal Use |
| SikaTop® Armatec®-110 EpoCem® | Demanding requirements |
Concrete Repair Mortar
- Sika MonoTop®-4200 Multi Flow
Smoothing Coat / Levelling Mortar
- Sika MonoTop®-3020
Compressive Strength
| 1 day | 7 days | 28 days | |
| Hand and wet spray | ~30 Mpa | ~50 Mpa | ~60 MPa |
| Flowable | ~25 Mpa | ~45 Mpa | ~50 MPa |
Modulus of Elasticity in Compression
| ≥ 20 GPa | (EN 13412) |
Tensile Strength in Flexure
| 1 day | 7 days | 28 days | |
| Hand and wet spray | ~7 Mpa | ~10 Mpa | ~11 MPa |
| Flowable | ~5 Mpa | ~7 Mpa | ~9 MPa |
Tensile Adhesion Strength
| ≥ 2,0 MPa | (EN 1542) |
Restrained Shrinkage / Expansion
| ≥ 2,0 MPa | (EN 12617-4) |
Reaction to Fire
| Class A1 | (EN 13501-1) |
Capillary Absorption
| ≤ 0,5 kg·m-2·h-0,5 | (EN 13057) |
Chloride ion ingress
| < 0,05 % | (EN 1015) |
Carbonation Resistance
| Pass dk ≤ control concrete MC (0,45) | (EN 13295) |
Application
Mixing Ratio
Hand and wet spray: 3,5–3,7 L of water for 25 kg powder.
Flowable: 4,4–4.6 L of water for 25 kg powder.
Fresh mortar density
~2,1 kg/l
Layer Thickness
| Hand and wet spray | 5 mm min. / 80 mm max. |
| Flowable | 5 mm min. / 60 mm max. |
Consistency
| Hand and wet spray | w/c: ~14 % |
| Flowable | w/c: ~17,5 % |
Ambient Air Temperature
+5 °C min. / +30 °C max.
Substrate Temperature
+5 °C min. / +30 °C max.
Pot Life
~30–45 minutes at +20 °C
Consumption
~2,1 kg/m2/mm
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
Hand and wet spray: 25 kg of powder yields ~13,5 L of mortar.
Flowable: 25 kg of powder yields ~14 L of mortar.
EQUIPMENT
Select the most appropriate equipment required for the project:
Substrate preparation
- Mechanical hand held tools
- High / ultra-high pressure water blasting system
Steel reinforcement
- Abrasive blast cleaning system
- High pressure water blasting system
Mixing
- Small quantities - low speed (< 500 rpm) electric hand drill mixer. Mixing Container
- Large quantities or machine application - suitable forced action mixer
Application
- 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
-
Flowable – Shuttering / formwork
Finishing
- Trowel ( PVC or wooden),sponge
Also refer to Site Handbook ‘Repair of Concrete Structures – Patch Repair and Spray Applications’
MIXING
Hand applied, flowable or wet spray application
Pour the minimum recommended clean water quantity in a suitable mixing container. 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.
Refer to the Method Statement for Concrete Repair using Sika MonoTop® systems for more information or refer to recommendations provided in EN 1504-10.
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®-910 N/ S/ Eco 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®-910 N / S / Eco or SikaTop® Armatec®-110 EpoCem® (Refer to respective Product Data Sheets). Also a slurry made of Sika MonoTop®-4200 Multi Flow can be used as bonding primer. Application must be done with a hard brush. Apply repair mortar onto bonding primer “wet on wet”.
Flowable repair substrate pre-soaking
The concrete substrate must be pre-soaked with clean potable water continuously for 2–6 hours before application of the repair mortar. The surface must not be allowed to dry within this time. Before application of the repair mortar, all water must be removed from within formwork, cavities or pockets and the final surface must achieve a dark matt appearance (saturated surface dry) without glistening.
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 a dark matt 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 stiffen before applying subsequent layers “wet on wet”.
Sprayed application - Wet Spray
The wet mixed Sika MonoTop®-4200 Multi Flow must be placed into the spraying equipment and applied onto the pre-wetted substrate (pre-wet procedure as 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 should be allowed to stiffen before applying subsequent layers “wet on wet”.
Flowable application
Pour the mixed $v (name) into the prepared repair area directly as soon as it has been mixed. Ensure continuous mortar flow during the complete pouring operation to avoid trapping air.
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 stiffen.
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.