Product Data Sheet Show all documents

SikaCem®-133 S Gunite

R4 Dry Sprayed Micro Repair Concrete

SikaCem® -133S Gunite ( formerly SikaCem® -133 Gunite) is a cement based, polymer modified one component repair mortar containing silica fume and high range water-reducing agents, meeting the requirements of Class R4 of BS 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 high standard
  • Overcoatable with Sika reprofiling/levelling mortars and coatings
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 high standard
  • Overcoatable with Sika reprofiling/levelling mortars and coatings

Packaging

25 kg bag

Colour

Grey powder

Product Details

Sustainability / Certifications / Approvals

APPROVALS / STANDARDS

  • Approved for potable water contact
  • Resistivity: Mott MacDonald Report No. 37423/DA/001.Rev A
  • Conforms to the requirements of BS 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 properly in original unopened, sealed and undamaged packaging in dry and cool conditions

Density

Fresh mortar density: ~ 2.2 kg/l

Maximum Grain Size

Dmax: 3.0 mm

Soluble Chloride Ion Content

< 0.007%
Technical Information

Compressive Strength

1 day

~ 15 MPa

(EN 12190)

7 days

~ 45 MPa

28 days

~ 60 MPa

(Air cured cores RH 50%)

Modulus of Elasticity in Compression

~ 23GPa

(EN 13412)

Flexural Strength

~10MPa (28 days)

(EN 12190)

Tensile Adhesion Strength

~ 2.5 MPa

Coefficient of Thermal Expansion

8 x 10-6 m/m °C

Freeze Thaw De-Icing Salt Resistance

106% good resistance with no visible change after 400 cycles*

*to SN 640461 - Resistivity factor WFT-L

Diffusion Resistance to Water Vapour

μ - 1,000

Capillary Absorption

0.14 kg.m-2.h-0.5

(EN 13057)

Chloride Ion Diffusion Resistance

600 – 700 x 10-15 m2/s

Lap Shear Strength

μ - 60,000

Electrical Resistivity

(4 point Wenner)

RH%

Resistivity (kohm.cm)

100

133

81

249

45308
44397

Mott MacDonald Report No. 37423/DA/001.Rev A

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.
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® -133S 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 ( Minm 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 nminimum 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 to surface dry to a dark matt appearance.

SikaCem® -133S 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.

Reference shall be made to BS EN1504-10:2003 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 BS EN1504-10:2003 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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