2 Component Cementitious Coating

Chem Block 2k

Chemsol Chemblock 2K is a two-component acrylic flexible waterproofing system. Chemblock 2K is supplied in ready to mix polymer and powder kit. On curing Chemblock 2K forms a seamless waterproofing membrane on concrete and masonry surfaces.

Applications

Retaining walls, parking deck and lift pits.
Water tank and swimming pools.
Bathrooms, terrace, balconies, planters, sloping roofs.

Features

Two – component product.
VOC free.
Excellent adhesion to concrete surface.
Easy to apply with brush, roller or squeegee.
Flexible and elastic
Quick drying.

Method of Application

1. Surface Preparation

Surface should be clean and dry and in sound condition.
All the surface dirt, grease, loose particles should be removed from the surface. And the surface should be washed thoroughly with clean water.
All other previous coatings if any shall be completely removed.

2. New Surfaces

The newly constructed surfaces shall be completely cured before coating application.

3. Cracks and Joint Treatment

All the surface cracks from 0 - 5mm shall be opened with a 3mm angle grinder.
The opened cracks shall be cleaned properly and filled with Chem Crack Fill an acrylic crack-filler.
Cracks more than 5mm should be repaired using polymer modified mortar using Chemsol Chemfast SBR. With a cement sand ratio of 1:3 and polymer content of 10% by weight if cement. Allow it to cure as required.

4. Pre-Application Testing

Ponding test to be done to identify porous surfaces.
The porous surfaces should be then grouted to remove any porosity in the substrate before coating application.
Post ponding to be done to be certain that the surface porosity is completely removed and the surface is ready for coating application.

5. Application

The surface shall be in SSD condition before coating application.
Mix the two components in the kit thoroughly with a low rpm mechanical mixer. Keep in mind to add powder to the polymer and not the other way around.
The drain outlets need to be properly detailed with the coating with an additional piece of fiberglass mesh as a reinforcement.
Apply 1st coat of Chemsol Chemblock 2K on the surface with a coverage of 0.75 Kg/Sqm/Coat all over the surface. Let the coating air dry for minimum 6hrs.
Apply 2nd coat of Chemsol Chemblock 2K at an angle of 90o to the first coat with a coverage of 0.75 Kg/Sqm/Coat and let dry for minimum 6 hrs.
For higher performance Glass Fiber reinforcement can be applied between 2 coats of Chemblock 2K.

6. Ponding

Let the system air cure for 4-5 days before pond test.
Ponding shall be done with water not more than 5 cm in height.

Precautions and Limitations

Do not dilute Chemblock 2K with water for coating application.
Keep material closed when not in use.
Corners, joints and repair areas should be treated with two extra coats.
Surface must be in SSD condition for coating application.
Not suitable for traffic area application.
Chemblock 2K is an undercoat so it needs to be covered with a screed/coba for terrace or open area application.
Do not cure by flooding with water.

Technical Information

PROPERTIES	TEST METHOD	UNITS	RESULTS
Mixing Ratio (Resin:Aggregate)			1:2 on weight basis
Total Polymer Content		%	>20
Adhesion to Concrete	ASTM D 4541	MPa	>1.75
Surface Dry			40-45 min
Tensile Strength	ASTM D 412	N/mm2	2.5
Elongation at Break	ASTM D 412	%	>80
Crack Bridging	ASTM C 836		Up to 1 mm

Theoretical Coverage

Waterproofing Coat: Material consumption of 0.4 Kg/M2/Coat with 0.6 Kg/M2/Coat of cement shall be maintained throughout for a standard thickness of 300 microns.
Bond Coat: 45-50 Sqft/Kg/Coat
Repair Mortar: 6-7.5 Kg of Chemfast SBR ECO per 50 Kg of cement.

Storage

Chemsol Chemfast SBR ECO shall be placed in a cool and dry place protected from direct sunlight.

Pack Size

200 GM, 500 GM, 1 KG, 5 KG, 10 KG, 20 Kg, 50 Kg, 225 Kg

Shelf Life

24 months for the date of manufacturing if unopened and stored properly.

Health and Safety

Wash skin with soap and water.
On eye contact wash the eyes immediately and consult a physician if irritation persists.
On ingestion consult a doctor immediately.

Chem Block Flexi

Chemsol Chemblock Flexi is a two-component acrylic flexible waterproofing system. Chemblock Flexi is supplied in ready to mix polymer and powder kit. On curing Chemblock Flexi forms a seamless waterproofing membrane on concrete and masonry surfaces.