Product Data Sheet Show all documents

SikaCem®-133F Gunite

R4 DRY SPRAYED FIBRE REINFORCED MICRO REPAIR CONCRETE

SikaCem® -133F Gunite is a cement based, fast setting, polymer modified, one-component 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 process without set accelerators, repairs may be profiled and trowel finished where necessary.

  • One component, ready to use micro concrete.
  • Non silica aggregates.
  • Low rebound losses and dust formation during the spraying process.
  • Layer thicknesses in one application overhead up to 150mm are possible without any additional mesh reinforcement.
  • Rapid strength gain without set accelerators.
  • Very low shrinkage.
  • Can be finished to a good standard.
  • Fibre Technology reduces shrinkage cracking and improves toughness.
  • Fast setting properties and fibres reduces the effect of tidal wash out in coastal or rising water situations. 
Product Data Sheet Show all documents

Usage

  • Large volume repairs.
  • Bridges.
  • Marine structures.
  • Tunnels.
  • Facades.
  • For exterior and interior use.
  • In place of R1, R2 & R3 mortars.  

Advantages

  • One component, ready to use micro concrete.
  • Non silica aggregates.
  • Low rebound losses and dust formation during the spraying process.
  • Layer thicknesses in one application overhead up to 150mm are possible without any additional mesh reinforcement.
  • Rapid strength gain without set accelerators.
  • Very low shrinkage.
  • Can be finished to a good standard.
  • Fibre Technology reduces shrinkage cracking and improves toughness.
  • Fast setting properties and fibres reduces the effect of tidal wash out in coastal or rising water situations. 

Packaging

25 kg bag

Colour

Grey powder

Product Details

Sustainability / Certifications / Approvals

APPROVALS / STANDARDS

Conforms to the requirements of EN 1504-3 R4 Classification.
Product Information

Chemical Base

Portland cement, polymer redispersable powder, selected aggregates, silica fume and additives.

Shelf Life

6 months

Storage Conditions

Store in original unopened, sealed and undamaged packaging in dry and cool conditions.

Maximum Grain Size

Dmax: 3.0 mm

Density

Fresh mortar density: ~ 2.2 kg/l

Soluble Chloride Ion Content

< 0.007%

 
System information

System Structure

SikaCem® -133F Gunite is part of the range of Sika mortars complying with the relevant parts of European Standard EN 1504 and comprising of:

Reinforcement Corrosion Protection

Sika MonoTop®-1010

Carbonation

SikaTop® Armatec® 110 EpoCem®

Chlorides

Repair Mortars
All Sika® MonoTop® and SikaCem® Gunite series
Smoothing Coat / Pore Filler
Sika MonoTop®-3020Normal use
Sikagard®-720 EpoCem®Demanding requirements
Corrosion Inhibitor
Sika® FerroGard®-903+

Anti-Carbonation Protective Coatings
All Sikagard® Anti-Carbonation protective coatings.
Technical Information

Compressive Strength

1 day

~35 MPa

7 days

~65 MPa

28 days

~75 MPa

*(Air cured cores RH 50%)

Modulus of Elasticity in Compression

~28 GPa 

(EN 13412)

Flexural Strength

28 days ~10 MPa 

(EN12190)

Tensile Strength

~2.5 MPa

Capillary Absorption

0.11 kg.m-2.h-0.5

(EN 13057)

Diffusion Resistance to Water Vapour

Coefficient μ - 1,000

Chloride Ion Diffusion Resistance

Coefficient 600 – 700 x 10-15 m2/s

Freeze Thaw De-Icing Salt Resistance

106% good resistance with no visible change after 400 cycles

*(to SN 640461)

Carbonation Resistance

Pass

Application

Application Information

Layer Thickness

10 mm min. / 150 mm max.

Ambient Air Temperature

+3°C min. / +30°C max.

Substrate Temperature

+3°C min. / +30°C max.

Initial set time

~140 minutes

Final set time

~220 minutes
Consumption

Consumption

This depends on the substrate roughness and thickness of layer applied. As a guide, ~ 2.2 kg/m2/mm.
Application steps

MIXING

SikaCem® -133F 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/or thin application layers.

APPLICATION

Reinforcement Corrosion Protection:
Where a reinforcement coating is required, the application of the repair mortar shall be applied when the reinforcement coating has cured (at least finger nail hard). Refer to the System Information above for compatible Sika products and refer to the relevant Product Data Sheet for more detailed information about the reinforcement corrosion product.
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 surface and allow the surface to dry to a dark matt appearance.
SikaCem® -133F Gunite is finished by leaving ‘as shot’, or striking off with a straight edge and closing the surface with a wooden/plastic float or damp sponge to achieve the desired surface texture.
Fibres will be exposed on the final finish. For a smooth fibre-free surface, use SikaCem® -133S Gunite as final layer (see separate Product Data Sheet).
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 the repair mortar 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.

CLEANING OF TOOLS

Clean all tools and application equipment with water immediately after use. Hardened/cured material can only be mechanically removed.

 

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