Sika MonoTop®-3400 Abraroc
High Abrasion Resistant Concrete Repair Mortar (formerly Sika® Abraroc® SR)
Sika MonoTop®-3400 Abraroc is a 1-part, cementitious hand or machine applied structural concrete repair mortar with very high resistance to hydraulic abrasion.
- Ready to mix with water
- High abrasion resistance (A6 classification)
- High hydraulic abrasion resistance (equivalent to granite)
- Resistant to sea water and aggressive water conditions
- Applied up to 50 mm thick in one layer on vertical and horizontal applications
- Applied manually or mechanically (dry spray)
Usage
- For new and refurbishment of structures subject to hydraulic abrasion (sewer pipes, sewage treatment plants, dams and maritime structures)
- Water retaining structures containing water (pH > 4)
- Abrasion resistant protective mortar layer
- Structures subjected to heavy abrasion or mechanical loads (Storage or loading bays, Silo floors, Industrial floors etc.
- Suitable for the environments XC1-XC4, XD1-XD3, XS1-XS3, XF1- XF4, XA1-XA3 according to the standard EN 206.
- 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
Advantages
- Ready to mix with water
- High abrasion resistance (A6 classification)
- High hydraulic abrasion resistance (equivalent to granite)
- Resistant to sea water and aggressive water conditions
- Applied up to 50 mm thick in one layer on vertical and horizontal applications
- Applied manually or mechanically (dry spray)
Packaging
25 kg bag
Colour
Grey powder
Product Details
APPROVALS / STANDARDS
- CE Marking and Declaration of Performance to EN 1504-3 - Concrete repair product for structural repair.
- CE Marking and Declaration of Performance to EN 13813 - Cementitious screed material for use internally in buildings. Insert local reports herehere
- Guideline Maintenance of accesible sewers TED Directive 1, LPM report A-33609-1, 18.08.2009
Chemical Base
Sulphate resistant cement, fibres, additives and selected abrasive resistant 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: 2,6 mm
Soluble Chloride Ion Content
| ≤ 0,05 % | (EN 1015-17) |
Product Declaration
EN 1504-3: Class R4.EN 13813: - Cementitious screed material for use internally in buildings.
System Structure
| Reinforcement Corrosion Protection | |
| Sika MonoTop®-910 N | Coating: Normal Use |
| SikaTop® Armatec®-110 EpoCem® | Coating: Demanding requirements |
Bonding Primer
SikaLatex® / SikaTop®-121 for green concrete
Sikadur®-32 LP for existing concrete (28 days)
Concrete Repair Mortar
Sika MonoTop®-3400 Abraroc
Compressive Strength
| 1 day | 2 days | 7 days | 28 days |
| ~30 MPa | ~45 MPa | ~65 MPa | ~85 MPa |
| C70 | (EN 13892-2) |
Modulus of Elasticity in Compression
| ≥ 20 GPa | (EN 13412) |
Tensile Strength in Flexure
| 1 day | 2 days | 7 days | 28 days |
| ~6 MPa | ~7,5 MPa | ~8,5 MPa | ~11 MPa |
| F10 | (EN 13892-2) |
Tensile Adhesion Strength
| ≥ 2,0 MPa | (EN 1542) |
Shrinkage
| ~500 µm/m at +20 °C 65 % relative humidity after 28 days | (EN 12617-4) |
Restrained Shrinkage / Expansion
| ≥ 2,0 MPa | (EN 12617-4) |
Abrasion Resistance
| Wear Resistance Böhme | < 6 cm3/50 cm2 |
| Wear Resistance | A6 |
| Material | Resistance Index |
| Sika MonoTop®-3400 Abraroc | 0,5–0,6 at 28 days |
| Granite | 0,35–0,8 at 7 days |
| Glass | 1 (reference) |
1 Compagnie Nationale du Rhône test method for wet abrasion
Thermal Compatibility
| ≥ 2,0 MPa (Part 1 Freeze-Thaw) | (EN 12687-1) |
Reaction to Fire
| Class A1 | (EN 13501-1) |
Capillary Absorption
| ≤ 0,5 kg·m-2·h-0,5 | (EN 13057) |
Water Penetration under Pressure
| 5 mm | (EN 12390-8 ) |
Carbonation Resistance
| dk ≤ control concrete (MC (0,45)) | (EN 13295) |
Application
Mixing Ratio
2,75 litres of water for 25 kg powder.
Fresh Mortar Density
~2,25 kg/l
Layer Thickness
min. 10 mm / max. 50 mm
Product Temperature
+5 °C minimum / +30 °C maximum
Ambient Air Temperature
+5 °C minimum / +30 °C maximum
Substrate Temperature
+5 °C minimum / +30 °C maximum
Application Time
| +5 °C | +20 °C | +30 °C |
| ~20 minutes | ~15 minutes | ~10 minutes |
Waiting Time / Overcoating
Minimum 24 hours at 20 °C
Consumption
This depends on the substrate roughness and thickness of layer applied.
As a guide, ~21 kg of powder per m2 per cm of layer thickness.
Yield
25 kg of powder yields approximately 12,3 litres of mortar
MIXING
Hand Application
Sika MonoTop®-3400 Abraroc can be mixed with a low speed (<500 rpm) hand drill mixer or for machine application, using a force action mixer 2 to 3 bags or more at once depending the type and size of mixer. For small quantities, product can be manually mixed.
Pour the minimum recommended water 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. The consistency must be checked after every mix.
Dry Spray Application
The amount of water added to the Sika MonoTop®-3400 Abraroc is controlled by the nozzleman at the nozzle.
APPLICATION
Reinforcement Corrosion Protection Coating
Where a reinforcement coating is required, apply to the whole exposed circumference Sika MonoTop®-910 N or SikaTop® Armatec® 110 EpoCem® (Refer to Product Data Sheets).
Bonding Primer
For sprayed application, a bonding primer is generally not required. For manual application, over green concrete use SikaLatex® or SikaTop®-121. Over a well prepared and roughened 28 days concrete use Sikadur®-32 LP
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 shall appear a dark matt appearance without glistening and surface pores and cavities shall not contain water.
When manually applying by hand, apply bonding primer. Ensure the whole surface to be repaired is covered by the suitable primer. The repair mortar shall 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 - Dry Spray:
The dry Sika MonoTop®-3400 Abraroc shall be placed into the spraying equipment. The amount of water added is controlled by the nozzleman and should be sufficient to prevent dust and slumping. Apply onto the pre-wetted substrate. Spray 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”. Rebound will be increased with a dry mixture and thin layers.
Finishing
After 1 hour, the mortar surface can be finished with a damp sponge. This removes any entrained air pores and further compacts the surface. This also creates a rough sand-paper like texture. A smooth finish can be obtained by finally smoothing the surface with a suitable trowel or flat spreading brush.
If the product is spray applied, finishing of the surface with a trowel can be carried out immediately after spraying.
CURING TREATMENT
Protect fresh mortar immediately from premature drying using an appropriate curing method, e.g. curing compound, moist geotextile membrane, polythene sheet, etc.
CLEANING OF TOOLS
Clean all tools and application equipment with water inmediately after use. Hardened material can only be mechanically removed.