SikaCem®-133 Rapid Gunite
SikaCem®-133 Rapid Gunite 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.
▪ Non silica aggregates.
▪ Low rebound losses and dust formation during the spraying process.
▪ Layer thicknesses in one application overhead up to 100mm are possible.
▪ Rapid strength gain.
▪ Fast Initial and final set times.
Usage
▪ Large volume repairs.▪ Bridges.
▪ Marine structures.
▪ Tunnels.
▪ Buildings.
▪ Fire damaged structures.
▪ For exterior and interior use.
▪ In place of R1, R2 and R3 mortars.
Advantages
▪ One component, ready to use.▪ Non silica aggregates.
▪ Low rebound losses and dust formation during the spraying process.
▪ Layer thicknesses in one application overhead up to 100mm are possible.
▪ Rapid strength gain.
▪ Fast Initial and final set times.
Packaging
25 kg bag
Colour
Grey powder
Product Details
APPROVALS / STANDARDS
Conforms to the requirements of EN 1504-3 R4 Classification.
Chemical Base
Portland cement, polymer redispersable powder, selected aggregates, silica fume and additives
Shelf Life
6 months
Storage Conditions
Store properly in original unopened, sealed and undamaged packaging in dry and cool conditions
Maximum Grain Size
~ 2mm
Density
| Cured mortar density: ~2300 kg/m3 | (EN 12190) |
Soluble Chloride Ion Content
| <0.01 | (EN 1015-17) |
System Structure
SikaCem®-133 Rapid Gunite is part of the range of Sika® mortars complying with the relevant part of European Standard EN 1504 and comprising of:
Reinforcement Corrosion Protection:
Sika MonoTop®-610/Sika MonoTop®-1010 for carbonated concrete
SikaTop® Armatec® 110 EpoCem® for chloride contaminated concrete
Repair Mortar:
SikaCem®-133 Rapid Gunite
Smoothing Coat / Levelling Mortar / Pore Filler:
Sika MonoTop®-620/Sika MonoTop®-3020
Anti-Carbonation Concrete Protective Coating:
All Sikagard® Anti- Carbonation protective coatings
Ancillary Products
Corrosion Management:
Sika FerroGard®-903+ Liquid Corrosion Inhibitor
Sika Margel VPI 580 Capsule Corrosion Inhibitor
Sika Galvashield® Galvanic Anodes
Sika Ebonex® Cathodic Protection Anodes
Compressive Strength
| 1 day | ~35MPa |
| 3 days | ~45MPa |
| 7 days | ~50MPa |
| 28 days | ~60MPa |
Modulus of Elasticity in Compression
| ~33 GPa | (EN 13412: 2006) |
Flexural Strength
~8-9MPa at 28 days
Tensile adhesion strength
| ~2.0MPa | (EN 1542:1999) |
Coefficient of Thermal Expansion
| 13.5 × 10-6/°C | (EN 1770:1998) |
Electrical Resistivity
| ~16 KΩ/cm | (4 point wenner @ 28 days) |
Capillary Absorption
| ~0.36 kg.m-2.h-0.5 | (EN 13057:2002) |
Freeze Thaw De-Icing Salt Resistance
| Good resistance with no visible change after 50 cycles | (EN 13687-1:2002) |
Reaction to Fire
Euroclass A1
Application
Layer Thickness
15 mm min. / 150 mm (Vertical) 100mm (Overhead) max.
Ambient Air Temperature
+3°C min. / +30°C max.
Substrate Temperature
+3°C min. / +30°C max.
Initial set time
| ~12 mins | (EN 13294) |
Final set time
| ~16 mins | (EN 13294) |
Typical set time @ 20°C
Consumption
This depends on the substrate roughness and thickness of layer applied. As a guide, ~2.2 – 2.3 kg/m2/mm.
MIXING
SikaCem®-133 Rapid Gunite is fed into the dry process spraying machine which should be of suitable size for the repair areas to reduce wastage and rebound. The amount of water added is controlled by the nozzleman at the nozzle and should be sufficient to prevent slump and dust. Rebound will be increased with unsuitably sized spraying machine, compressor, nozzle type, dry mixture and thin layers.
APPLICATION
Reinforcement Corrosion Protection:
Where a reinforcement coating is required, the application of the repair mortar shall be applied when the the reinforcement coating has cured (minimum finger nail hard). Refer to the System Information above for compatible Sika products and refer to the relevant Product Data Sheet(s) for more detailed information about the reinforcement corrosion product(s).
The sprayed repair mortar shall be placed onto the pre-wetted substrate between the minimum and maximum layer thicknesses without the formation of voids and loose rebound material. 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'. When layers cannot be applied 'wet on wet', pre-wet the surface and allow to surface dry to a dark matt appearance.
SikaCem®-133 Rapid Gunite is finished by leaving ‘as shot’ or striking off with a straight edge and closing the surface with a semi stiff damp brush (thereby creating a 'brush finish').
Reference shall be made to EN 1504-10 for specific requirements, the Code of Practice for Sprayed Concrete issued by the Concrete Society and any other guidelines that are specific to the structure.
CURING TREATMENT
It is essential to cure SikaCem®-133 Rapid Gunite immediately after application for a minimum of 3 days to ensure full cement hydration and to minimise cracking. Use polythene sheeting taped down at the edges or other approved method. Curing compounds shall not be used when they adversely affect subsequently applied products and systems.
Reference shall also be made to EN 1504-10 for specific requirements.