CEYMCO PROBOND SBR

SBR Latex For Waterproofing / Repairs

CEYMCO PROBOND SBR is a carboxylated styrene butadiene copolymer latex for integral adhesive for slurry bond coats, mortars and concrete to improve strength and Chemical resistance.

CEYMCO PROBOND SBR meets ASTM C 1059-86, Type II.

Characteristics – Physical

Application

Toppings, patches and leveling concrete surfaces.
Modifying / improving bonding of floor toppings, rendering and mortars.
Repair of worn / damaged / spalled concrete and cracks.
Thin sets, terrazzo, stucco and bonding slurries.
General reconstruction work and latex modified overlays.
Bridge decks, highways and parking area.

Advantages

Easy to use.
Excellent bond to concrete adhesion plaster, masonry, stone work etc.
Facilitates dense, impermeable, mortar for column & beam repairs.
Reduces rate of corrosion while applied on steel bars.
Reduces cracking through increased mortar flexural strength.
Increases mortar wear resistance under rubber wheeled traffic.
Increases mortar tensile strength.
Increases durability during freeze / thaw cycles.
Withstands chloride ion diffusion & sulphate / CO2 attack due to marine or industrialweather

Application Methodology

# Surface Preparation

If CEYMCO PROBOND SBR is used as a slurry bond coat, ensure that concrete is 3 days old.
Do not place slurry coat on standing water.
Ensure that the concrete is clean and rough. Remove all oil, dirt, debris, paint and unsound concrete.
The surface must be prepared mechanically using a scabbler, bush hammer, shot blast or scarifier which will give a surface profile of a minimum 3 mm and expose the large aggregate of the concrete.
Use vacuum cleaner or pressure washing to ensure thorough cleaning and removal of all
residue.
Ensure all concrete possess an open surface texture with all curing compounds and sealers removed.
Pre-wet all areas to reduce moisture loss.

# Material Preparation

# Suggested Mix:

Mix Type	Unit	Cement Slurry	Mortar
Cement	kg	50	50
Sand zone II	kg	-	125
PROBOND SBR	L	11.5	7 – 10
Water	L	8 – 10	8 – 10

For small quantity, mix with a drill and “jiffy” mixer.
For large quantity use drill machine fitted with paddle or small mixer machine.
Add the appropriate quantity of CEYMCO PROBOND SBR for the batch size consisting of powder / sand / coarse aggregate and cement and mix till the required consistency is achieved.
If using CEYMCO PROBOND SBR with a pre-packaged product, reduce the amount of water added to compensate for the latex addition.

# Application of Material

Prime all prepared surface areas with a slurry coat before applying the topping.

# Bond Coating Application

Spread the slurry with a stiff bristle broom until the suggested coverage rate is
achieved.

# Topping Application

For patching, spread with a trowel, come-a-long, or a square tipped shovel to a thickness that matches the surrounding concrete. Finish by hand trowelling.
On large floor areas, use screed strips as guides in combination with vibratory screeding to level. Compact and finish by hand or machine trowel.
In case of bonding toppings with CEYMCO PROBOND SBR, use slurry coat instead of CEYMCO PROBOND SBR itself as a primer.

# Structural repairs for columns and beams

Use polymer mortar admix with CEYMCO PROBOND SBR to build up the spalled areas of the cover zone concrete.

# Finishing

Finish the repair material to the desired texture. Typical texture is a broom or sponge float finish. Do not add additional water to the surface during the finishing operation.

Ensure proper curing for durability and quality of repair or over layment. To prevent surface cracking, keep surface moist for at least 72 hours.
Execute structural repairs for columns & beams using polymer mortar. This is a dry packmethod to build up the spalled areas of the cover zone concrete and has high compressive and tensile strengths.
Do not place CEYMCO PROBOND SBR on standing water.

Cleaning & Maintenance

Clean tools and equipment with water before the material hardens.

Health & Safety

Avoid contact with skin / eyes, and avoid swallowing.
Ensure adequate ventilation and avoid inhalation of vapour.
Wear suitable protective clothing, gloves and eye protection.
In case of skin contact, rinse with plenty of clean water, then cleanse with soap and water. Do not use solvent to clean the contacted area.
In case of eye contact, wash with plenty of clean water and seek medical advice.
If swallowed, seek medical attention immediately. Do not induce vomiting.

Packing

Available in 5 L, 20 L

Storage

Keep in cool and dry place, under shed, away from heat.

Shelf Life

24 months in original unopened sealed condition.