POLYALK WP

POLYALK WP is a novel waterproofing co-polymer.

It is known that concrete or mortar by itself has good impermeability, when properly formulated and firmly laid. In practice there is often a tendency to use extra water for easy workability and this gets compounded with poor workmanship. Thus the resulting high ‘water-cement’ ratio and voids content, makes the concrete have large amount of porosity leading to excessive permeability.

Shrinkage of concrete is another cause, which tends to generate some cracks. Higher permeabilities and cracks can provide a continuous passage from one face of the concrete to the other, resulting in dampness or leakage.

POLYALK WP is the right choice for water proofing for following reasons.

·        It can be easily mixed with cement, forming an impermeable co-matrix of cement and polymer, in the form of solid layer. The high compressive strength property of cementitious matrix is reinforced by high flexural strength and extraordinary adhesion of polymer.

·        It is alkaline and compatible with concrete.

·        It does not facilitate carbonation.

·        It is amenable for application in moist conditions for example;

a.     Exteriors, terraces and chajjas in wet spells of monsoon

b. Underground and/or overhead water tanks almost immediately after emptying.

·     It can mixed with any cement based paint and thus can have desired shade along with total waterproofing with marginal increase in cost. This is equivalent or a better option than prevalent acrylic coatings.

·   Can be used as a base water-proofing coat. After cure, it can receive any cement-based paint (or texturized finish) over it.


Uses

·        Roof slabs – flat or slopings, chajjas, folded plate roofs, vaulted roofs, domes etc.

·        Flooring, external walls.

·        Flooring, external walls.

·        Sunk portion of bathrooms, toilets, balconies, etc.

·        Overhead or underground water tanks and other large reservoirs.

·        Mortars for filling of G.I. or any other drainage pipes.

·        As an admixture for providing waterproof plaster to external walls especially in high rise buildings.

·        As waterproof additive to any cement based paints used as a finishing coat.


Test results

·    As per DIN 1048 (Cured concrete cubes, one face coated with POLYALK WP cement slurry and tested.)

Test Pressure Duration of test Permeability (Single-coat)

Permeability (Two coats)

1 bar
48 hrs.
35 mm.
0 mm.
3 bars
24 hrs.
35 mm.
0 mm.
7 bars
24 hrs.
48 mm.
0 mm.

NOTE: One bar pressure is equivalent to 10 mts. of water column.

·   POLYALK WP confirms to the flexibility and adhesion test as per the method laid down in I.S. 101.


Instructions for use

Preparation of the surface to be waterproofed is always of utmost importance. Any significant deficiency in the civil work such as loose or hollow concrete / plaster, exposed reinforcement steel etc. should be attended to first and required curing should be done as per the usual norms.

·      Cracks other than hairline ones should be suitably widened, freed from loose particles and then filled with a mortar consisting of POLYALK EP

·   Scrub and clean the surface to free it from any bitumen, oil, grease, loose flakes or particles.

·        Moisten the surface with water jet one day before.

·   Prepare a slurry using 1 part by weight of POLYALK WP and fresh white or grey ordinary Portland cement. Use a mix by weight of 1:1.25 for the first coat and 1:1.5 for subsequent coats. The mixing is best done using a low-speed stirrer, but continuous hand-mixing to a lump free consistency is also adequate. Apply the slurry by brush to the damp surface. Prepare only as much slurry as can be used within 30 minutes. Keep the mix continuously stirred.

·     Apply by brush two more coats of similar slurry at 24 hour intervals and allow to set for 48 hours.

·    Cure the coating for 7 days by sprinkling water thrice a day on the vertical surface (external walls) and by moist gunny bags on the horizontal surface (terraces).


Coverage

A coverage of approximately 50-55 sq. ft. can be obtained per kg. of POLYALK WP per coat on plain surfaces. Coverage will vary depending on the nature of the surface.


Precautions

·        Do not add any water.

·        Keep the slurry well stirred.

·        Prepare as much slurry as can be applied in 30 minutes.

·        Do not overwork the coating.

·   POLYALK WP is non-toxic. Tests have shown that there is no harm even when drinking water is exposed to larger concentrations of the chemical.

·   Any accidential spillage or splash on the body must be immediately washed with plenty of water. Use of protective hand gloves and goggles is recommended.

·   Wash all the implements with soap water. Hardened deposits can be cleaned mechanically.


Packing

20 kgs, 5 kg, 1 kg


Shelf life


Twelve month when stored in original closed container.