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SikaEmaco® SBR 2

(former MEmaco SBR 2)

High dispersion SBR Latex ensuring higher mixing efficiency with water reduction for site batched mortars & waterproofing/bonding slurry/screed

SikaEmaco® SBR 2 is a milky-white, Styrene-Butadiene co-polymer latex liquid, produced from styrene and butadiene. When used with cement, concrete and plaster, it reduces the mixing time through high dispersion of the polymer and improves waterproofing, new to old concrete/plaster bonding and strength characteristics and reduces shrinkage and cracking of the mix.

  • Multiple applications: Robust product that is economical, easy to handle and store.
  • Easy to Mix: Faster mixing to enhance worker efficiency.
  • Shrinkage/crack control:High flexural / tensile strength to control cracking.
  • Mortar modifier- Improved flexibility, no bleeding, lower water cement ratio and high resistance to water penetration.
  • Improves physical/mechanical properties – higher abrasion resistance, good adhesion to building materials similar thermal characteristics to concrete.
  • Corrosion control:Prevents corrosion of embedded steel.
  • High Dispersion technology:Allows for better workability at slightly reduced water
Product Data Sheet Show all documents

Usage

Concrete repair: Spalled concrete, repairing floors, beams and pre-cast slabs, chajjas etc.
  • Bond Coat: For bonding new concrete to old concrete, plaster, stone/brick masonry.
  • Plaster repair: For repairing plaster or making water proof plaster which is better than normal plaster.
  • Floor screeds and toppings: Abrasion resistant and non-dusting floors.
  • Waterproofing:Basements side walls and rafts, lift pits, inspection pits, sunken/overhead water tank,sunken portions of bathrooms and toilets, balconies, chajjas, exposed roofs before finished screed.
  • Other typical applications: Bedding tiles, fixing or re-fixing slip bricks.
 

Advantages

  • Multiple applications: Robust product that is economical, easy to handle and store.
  • Easy to Mix: Faster mixing to enhance worker efficiency.
  • Shrinkage/crack control:High flexural / tensile strength to control cracking.
  • Mortar modifier- Improved flexibility, no bleeding, lower water cement ratio and high resistance to water penetration.
  • Improves physical/mechanical properties – higher abrasion resistance, good adhesion to building materials similar thermal characteristics to concrete.
  • Corrosion control:Prevents corrosion of embedded steel.
  • High Dispersion technology:Allows for better workability at slightly reduced water

Packaging

SikaEmaco® SBR 2 is supplied in 1, 5, 25 Litre.

Colour

Milky-white

Product Details

Product Information

Composition

Styrene-Butadiene co-polymer latex

Shelf life

Shelf life is 12 months when stored as below.

Storage conditions

Store under cover, out of direct sunlight and protect from extremes of temperature. In tropical climates the product must be stored in an air-conditioned environment.

Density

1.000 - 1.005 at 25oC

pH-Value

approx. 10 ± 1
Technical Information

Mortar mix design

  • Mix Design Repair Mortar: 10 Litre of SikaEmaco® SBR 2:50kg of Cement:150kg of sieved sand:10litres of water.
  • Mix Design Floor Topping/Screed. 10 Litre of SikaEmaco® SBR 2: 50Kg of Cement: 75Kg of sand: 75kg of coarse aggregate (6mm down): 10litres of water.

Application

Consumption

Consumption

Bonding Coat: 4 to 4.5m2 for mix of 1 Litre SikaEmaco® SBR 2 and 1.5kg of cement.
Waterproofing slurry:2 m2 in two coats for mix of 1Litre SikaEmaco® SBR 2 and 2kg of cement.
Repair Mortar/Concrete Screed: 10 Litre of SikaEmaco® SBR 2 per 50kg of cement.
Application steps

SUBSTRATE PREPARATION

  • Remove all loose concrete, grease, mould oil or curing compound from concrete and steel surfaces using wire brush, scrubber.
  • Saw cut the concrete areas to a square or rectangular profile to a minimum 10mm depth at the extreme edges.
  • Roughen the surface free of loose particles and dust and saturate with water.
  • Remove excess/standing water.

MIXING

Bonding slurry

  • Mix 1½ parts cement to 1 part MasterEmaco SBR 2 by weight of cement.
  • Mix to a lump-free creamy, consistency for 2-3minutes by slowly adding SikaEmaco® SBR 2.
  • Using a stiff brush, work the bonding slurry well into the damp surface. When the bond coat is tacky apply mortar/screed overlay.

As waterproofing slurry:

  • Mix 2 parts cement to 1 part SikaEmaco® SBR 2 by weight of cement.
  • Mix to a lump-free creamy, consistency for 2-3 minutes by slowly adding SikaEmaco® SBR 2.
  • Using a stiff brush, work first coat of waterproofing slurry well into the damp surface.
  • After the first coat has dried, apply second coat at right angle to first followed by mortar/screed overlay. Average time gap between two coats is 3 to 4 hours.

Mortar/Screed:

  • Use fresh, lump free cement, well graded sand/aggregates free of excessive fines.
  • Mix sand and cement and coarse aggregate in Pan Type mixer for 1 -2 minutes. Hand mixing is only permissible when the total weight of the mix is less than 25kg.
  • Mix required quantity of SikaEmaco® SBR 2 and water for 2 minutes in a separate container, to avoid excessive air entrapment.
  • Finally, without delay, add the liquid mix slowly into the mixer containing the mixed powdered sand/coarse aggregate and cement until the required consistency is achieved.

APPLICATION

Rendering to vertical surfaces

  • Apply the bonding slurry to the prepared surface and then apply the SikaEmaco® SBR 2 rendor onto the wet bonding slurry.
  • Application Thickness: 5 to 25mm.
  • Greater thickness can lead to slumping.
  • Apply multiple layers in rapid succession, within 15 to 30 minutes of the previous layer.
  • Finish the surface using a wooden float or steel trowel.
  • Apply modified slurry coat on the first layer in case application of second layer is delayed to long time gaps.

Screeds and toppings, applied to horizontal surfaces

  • Application thickness 10mm to 40mm.
  • The SikaEmaco® SBR 2 modified mix should be placed over the still wet bonding slurry, well compacted by hand and trowelled to finish using a wooden float or steel trowel

Curing:Moisture cure for 24 hours and then allow to dry slowly

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