DESCRIPTION of Superbond SBR Latex

Superbond SBR Latex is based on modified styrene butadiene latex supplied as a ready to use bonding agent in liquid consistency. It is used for repair of spalled concrete – floors, columns, beams, chhajas, slabs. Waterproofing of toilet, bathrooms and small terraces etc. It bonds strongly to old & new concrete and to plasters. It reduces shrinkage, prevents cracking, dust pick up & improves abrasion resistance.

FEATURES / ADVANTAGES

• Non-toxic to human being.
• It acts as anti-corrosive for steel. SBR is highly durable even in continuous contact with water.
• Multipurpose – it is multipurpose & economical product, easy to use.
• Cracking – it prevents cracking by improving flexural strength.
• Hardness – improves the hardness & prevents dust generation.
• Shrinkage – Reduces drying & aging shrinkage cracks.
• Bonding – Bond strongly to concrete, masonry, stonework, plasters, cementitious surfaces, asphalt & most of the building materials.
• Reduces viscosity of cement injection grout for better fluidity & bonding.

USES

• For concrete repairs - Spalled concrete of floors, columns, beams, chhajas, slabs, parapets, etc.
• For waterproofing – Small roof terraces, sunken portions of toilets & bathrooms, chhajas & lift pits, balconies & staircases.
• Renovation and protection of concrete against corrosion and salt petre.
• For waterproofing – liquid & effluent tanks, car decks & walkways.
• Bonding mortar for tiles & panels, as undercoat for special finishes such as top rendering coat for chemical resistant floors.
• As external rendering – weatherproof & frost resistant render high wear & erosion resistant render. As bonding slurry coat for pinhole treatment on concrete surface & as repair mortar for overhead application.

TYPICAL APPLICATIONS

Surface Preparation

• Clean the surface with wire brush or scrubber to remove hidden dirt, loose particles, laitance & dust. Degrease the surface by using suitable solvents.
• Repair the Spalled concrete portion by saw, cutting the extreme edges of the repair location to a depth of at least 10 mm to avoid featheredging & to provide strong bond.
• Clean the concrete surface to remove any contamination where breaking is not possible. Roughen the surface by light scrabbling or grit blasting.
• Expose corroded rebar in the repairing area fully. Remove all loose scales & corrosion deposits and immediately clean the surface.

Priming

For priming of concrete substrate, the surface should be thoroughly saturated with potable water. Remove any excess of water prior to application. Slurry of primer coat is prepared by mixing of one part Superbond SBR Latex, one part of water and 3 parts of fresh OPC cement. Slowly mix cement with binder to obtain a smooth consistency. Continue mixing the slurry during application to prevent settlement.

Mixing

A forced action mixer is essential (Pan Mixer) & recommended to ensure that Superbond SBR Latex mortar is thoroughly mixed or Use a suitable sized drum with heavy-duty electrical drill machine fitted with spiral paddle mixer at slow speed of 400-500 rpm.

Hand mixing is permissible only for 25 kg or less quantity.

Charge the mixer with required quantity of clean & dry sand, cement & mix for 1-2 minutes, then adds Superbond SBR Latex as per the dosages recommended. Mix for 2-3 minutes to avoid air entrapment. Keep on slowly adding water until the required consistency is achieved. Do not add extra water.

Application

Precaution

Do not add extra water and recommended dosage is to be followed.

TYPICAL CHARACTERISTICS

SPECIFICATION COMPLIES

• BS6319 part2:1983
• ASTM C – 190-85

PACKING

1 Liter, 5 Liters, 20 Liters, 200 Liters plastic container.

SHELF LIFE AND STORAGE

Shelf life is 12 months from the date of manufacturing. Store in a cool & dry place in unopened condition (Prevent from direct sunlight).