BCR KRYSTALKOTE, cementitious crystallization coating.

BCR krystalkote

CEMENTICIOUS WATERPROOFING SYSTEM BY CRYSTALLIZATION. 

BCR krystalkote is a cementicious waterproofing coating which protects and waterproofs concrete structures by crystallization. The active chemicals react with moisture in the concrete resulting in a crystalline formation within the pores and capillary tracts of concrete, thus waterproofing the structure against penetration of water and other liquids from any direction. krystalkote gives a strong and lasting waterproofing protection against dampness and ground water hydrostatic pressure.

Recommended for use on interior and exterior below grade surfaces. krystalkote gives protection against concrete decay and waterborne corrosive salts.

Can be used for negative waterproofing of concrete structure and on horizontal structural slabs against hydrostatic pressure as it provides strong resistance to impact and abrasion.

Area of application 

• Basements
• Wet areas
• Tunnels
• Underground garages
• Planter boxes
• ADVANTAGES 

• Single component and easy to apply
• Can be used for positive and negative waterproofing of concrete structure
• Protection against rising dampness on ground slab

TECHNICAL DATA
Final set	< 16 hours
Flexural Strength	7 days 28 days	4.8 N/mm2  8.6 N/mm2
Compressive Strength	7 days 28 days	> 25 N/mm2 > 45 N/mm2
Adhesion strength	28 days	> 1.2 N/mm2 > 0,8 MPa
Resistant to hydrostatic pressure when applied on negative side	28 days	> 0.8 MPa
Specifications are subject to change without notification. Results shown are typical but reflect lest procedures used. Actual field performance will depend on installation methods and site conditions.

SURFACE PREPARATION 

The concrete surface must be clean and free from laitance, oils, grease, curing agents or other foreign matters. If surface is too smooth or highly contaminated with foreign particles, sand blast or acid etch surface before treatments.

Concrete surface must be sound. Rout out visible cracks exceeding 0.4mm wide, honeycombed pockets to depth of about 40mm and width of 25mm. Mix three parts of krystalkote to one part water by weight, until stiff mortar consistency is achieved. Prime concrete surface with one slurry coat of  krystalkote before applying the mortar mix onto area to patched, tightly sealing cavities.

krystalkote must be applied on damp substrates only to ensure maximum chemical penetration. Pre-wet substrate until damp prior to application of krystalkote. If concrete surfaces dry out before application, it must be re-wetted.

MIXING 

Mix 7.25 to 7.75 litres of clean water to 25kg krystalkote. Always mix the powder to the clean water by using a mechanical stirrer. Mix for 2 minutes until a smooth lump free consistency is achieved.

APPLICATION 

Apply a minimum of 2 coats at 90º angles to the previous coat, using a block brush or roller. The second coat must be applied while the first coat is still green but sufficiently set so that it is not drawn off while applying the second coat.

The mixed material must not be applied at a temperature below 5°C or on a frozen surface. At no instance should the total thickness exceed 5mm in a single application.

DRY SHAKE METHOD (NEGATIVE WATERPROOFING) 

Sprinkle krystalkote powder directly from the packaging after allowing concrete to achieve initial set.

Sprinkle krystalkote at the rate of 3 – 3.5 kg/m2 evenly and trowel to required finish or power float.

DRY SHAKE METHOD (POSITIVE WATERPROOFING) 

Sprinkle krystalkote powder directly from the packaging at the rate of 2kg/m2 evenly onto the lean concrete substrate just before the pouring of the concrete.

CURING 

After krystalkote coat has hardened, cure the treated surface with a light mist of clean water at regular intervals three times a day, for the initial 2 – 3 days. In extremely hot weather curing period may have to be extended to several days.

PROTECTION 

Protection of krystalkote is not obligatory. However if used on external areas, subjected to heavy rain, harsh sunlight or frost, the finished application should be protected for at least 24 hours.

PACKAGING 

25 kg bag.

SHELF LIFE 

Shelf life of 12 months stored in unopened bag in a cool dry elevated place.

COVERAGE 

For Slurry coat/ Brush application method, apply the rate of 1kg/m2 depending on the area of application.

HEALTH AND SAFETY 

 krystalkote is a cement based product and is alkaline which may cause dermatitis.

We recommend that PVC or similar gloves and safety goggles should be worn during handling.

IMPORTANT NOTE 

This data sheet is issued as a guide to the use of the product(s) concerned. Whilst BCR Construction Chemicals endeavour to ensure that any advice, recommendation, specification or information is accurate and correct, the company cannot – because it has no direct or continuous control over where and how products are applied – accept any liability either directly or indirectly arising from the use of products, whether or not in accordance with any advice, specification, recommendation, or information given by the company.

FURTHER INFORMATION 

Where other products are to be used in conjunction with this material, the relevant technical data sheets should be consulted to determine total requirements. Construction Chemicals has a wealth of technical and practical experience built up over years in the company’s pursuit of excellence in building and construction technology.