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SikaEmaco® S 442

(former MEmaco S 442)

SINGLE COMPONENT THIXOTROPIC MORTAR FOR CORROSION DAMAGED CONCRETE REPAIR BASED ON APPLIED NANOTECHNOLOGY 

SikaEmaco® S 442 is a single component cementitious, synthetic fibre reinforced, structural repair mortar that contains Portland Cement, well graded sands, specially selected fibres and additives to improve the fresh and hardened properties.
Suitable for use in hot and tropical climatic conditions.

SikaEmaco® S 442 provides the following beneficial properties:
  • Structural repair
  • Rapid strength gain and high final strength
  • Good water and oil resistance
  • Low shrinkage behaviour
  • High abrasion resistance
  • Good adhesion
  • Easy to apply
  • Low permeability
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Usage

SikaEmaco® S 442 is used for structural repair work and suitable for:
  • Restoration works, repair of spalling and damaged concrete in buildings, bridges, infrastructure and superstructure works.
  • Structural strengthening by increasing the bearing capacity of the concrete structure by adding mortar (section enlargement).
  • Preserving or restoring passivity by increasing cover with additional mortar and replacing contaminated or carbonated concrete.
 

Advantages

SikaEmaco® S 442 provides the following beneficial properties:
  • Structural repair
  • Rapid strength gain and high final strength
  • Good water and oil resistance
  • Low shrinkage behaviour
  • High abrasion resistance
  • Good adhesion
  • Easy to apply
  • Low permeability

Packaging

25 kg paper bags

Colour

Grey powder

 

Product Details

Product Information

Composition

Polymer containing cementitious mortar with different additives and synthetic fibres

Shelf life

12 months from date of production

Storage conditions

Store in a cool, dry area in original sealed packaging and at temperatures between +5 °C and +35 °C. Protect from direct sunlight, heat and moisture.
Technical Information

Compressive strength

28 Days

w/p = 0.144

≥ 70 N/mm2

Tensile adhesion strength

≥ 1.5 N/mm2 (or concrete failure)

(EN 1542)

Application

Application Information

Fresh mortar density

~2.23 kg/l (+25 °C)

Layer thickness

Min. 10 mm
Max. 40 mm

Ambient air temperature

+5 °C min. / +40 °C max.

Mixing ratio

3.1 - 3.6 L of water per 25 kg bag

Substrate temperature

+5 °C min. / +40 °C max.
Consumption

Yield

~12.8 L / 25 kg bag
Application steps

MIXING

Mix the full bag of SikaEmaco® S 442 with the necessary amount of cold water in a clean bucket. Add the SikaEmaco® S 442 powder slowly to the water while mixing continuously for at least 3 to 5 minutes and until a homogeneous consistency is achieved.

SikaEmaco® S 442 is best mixed in a forced action mixer. Slow speed double paddle drill can be also used for mixing. Do not mix at faster rate than 500 rpm. The obtained mix results should be very creamy, easily spreadable and thixotropic.

Note: Always start with minimum recommended quantity of water (water/powder ratio), only if required, gradually add water to desired consistency. Do not exceed maximum allowed limit of water per bag weight.

APPLICATION

Apply SikaEmaco® S 442 while the bonding agent is still wet. The mortar can be applied by spatula or trowel. For large scale repairs SikaEmaco® S 442 can be applied by dry or wet spray application, please refer to Sika Technical Department for guidance. 

For any thickness more than 40 mm, SikaEmaco® S 442 must be applied in several layers. As soon as the mortar has started to set it can be smoothed by wooden or synthetic float. For fine surface finish SikaEmaco® N 907 or SikaRep® Fine N can be applied over the SikaEmaco® S 442.

 

CURING TREATMENT

Where ambient conditions may lead to rapid surface drying, the use of light water fogging, damp hessian and polythene sheet or application of a suitable water based curing compound from Sika® Antisol range is recommended. Do not commence fogging until final set has been reached.

CLEANING OF EQUIPMENT

Clean all tools and equipment with water immediately after use. Hardened SikaEmaco® S 442 can only be removed mechanically.

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