POLYALK SB
POLYALK SB is a versatile SBR
(special bond repair) dispersion admixture for use in repair mortars and other
cementitious mixes where it wholly or partially replaces the water content of
the mix. Its use as a secondary binder in cementitious mixes improves
toughness, along with flexural and tensile strengths, as well as reduces permeability
so that resistance to wetting and erosion is increased enhancing durability. Further,
it almost totally resists carbonation.
Uses
- Repair Mortar for R.C.C. members Provides durable repairs to spalled concrete floors, beams, columns, slabs, foundations etc.
- Repairing finished concrete elements.
- For repairing surface damage without adversely affecting the element. For replacing broken edges, filling of voids and rock pockets, production of high grade, hardwearing coating etc.
- Renovating stairs made from concrete, natural stone or artificial stone.
As POLYALK SB is suitably
formulated with other ingredients, the water/cement ratio is effectively
reduced, which increases ultimate compressive strength as well as reduces
bleeding and segregation.
Instructions for use
Bonding/Priming
Wet down absorbent surfaces and
mix a bonding slurry of 1.5 parts of cement to 1 part ‘POLYALK SB’ to a
lump-free creamy consistency. Apply this slurry as a bonding coat. The renderings,
screeds etc. should follow as long as the bond coat is not hard-set, i.e. wet
on wet, (say within 10-15 minutes).
Coverage
30 to 40 sqft per liter of POLYALK
SB
Repair Mortar
Prepare mortar consisting of
the followings:
1) 1 kg POLYALK
SB
2) 5 kg
Fresh OPC
3) 15 kg
Quartz sand (graded).
4) Water as
required
Yield
Above 21 kg mix yield 0.01 Cub.
Mtr or 10 ltrs
Application
After treating the surface with
a bonding slurry of cement and POLYALK SB as above and whilst it is still
wet/tacky apply the repair mortar to minimum depth of 14 mm. in two coats of 7
mm. each. The coating should be well compacted and finished. Subsequently general
curing precautions may be taken using moist gunny bags but not directly
spraying or ponding of water.
NOTE: POLYALK SB with cement
has excellent adhesive properties, so clean all the tools with water
immediately after use.
Packing
20 kg, 5 kg, 1 kg
Shelf life
Twelve months when stored in
original closed container.
