Crystalline Waterproof Coating

CAPISEAL^TM (Code: D051) is a deep penetrative, reactive, cementitious crystalline capillary waterproofing coating system. It contains proprietary blend of portland cement, quartz aggregate and special additives. In the presence of moisture, the active chemicals in CAPISEAL crystalline waterproofing system penetrates concrete and react chemically with free lime to produce water-insoluble nano-crystals. This crystalline growth reduces porosity by blocking capillaries and filling hairline non structural cracks caused by shrinkage or expansion. Unlike metallic and membrane types of waterproofing which only form a surface barrier, CAPISEAL crystalline waterproofing system, in the presence of water, continues producing crystals and lasting imperviousness to water.

Uses:

CAPISEAL^TM crystalline waterproofing system is used for waterproofing against the positive or negative sides of hydrostatic heads of water, for damp-proofing, repairing cracks, plugging holes, sealing wall – floor joints and stopping active leaks in a wide variety of conditions including

• Water tanks, Reservoirs
• Building Basements & foundations
• Swimming pools and water parks
• Sewage and Water treatment plants
• Dams, canals, Tunnels, Harbours
• Retaining walls & sea defence walls
• Concrete pipes

Features:

• Suitability to potable water
• Penetrates concrete, seals capillary tracts
• Contains no chloride
• Easy to apply
• Resists chemical attack of sewage and industrial wastes
• Suitable for external and internal applications.

Application Method:

Surface Preparation

Old Concrete

Surfaces must be clean and sound. Remove all oil, dirt, laitance and other contaminants by water blasting. Water blasting is preferred for surface preparation because it mechanically cleans and roughens the surface, is environmentally safer and leaves the surface saturated with water. Surface must be damp for application of CAPISEAL^TM crystalline waterproofing system.

New Concrete

After forms are stripped, acid etch or water blast as above to remove form oils and laitance. Surface must be left damp for application on CAPISEAL^TM crystalline waterproofing system. For horizontal surfaces, the crystalline powder can be broadcast on the top surface while concrete is still green @ 1-1.5 kg/sqm. Construction joints, cold joints and non-leaking joints greater than 0.25mm wide must be cut in V-groove shape and filled with CAPISEAL^TM crystalline waterproofing system in mortar consistency.

Mixing

2 to 2.25 parts of CAPISEAL^TM powder (by volume) shall be added to 1 part of clean potable water and mixed thoroughly with a slow speed drill equipped with a paddle. For larger batches, mixing shall be done with a mortar mixer. If mixture thickens, it shall be re-stirred to reduce consistency. The average water demand for a fluid consistency is from 28% to 30% (7 to 8 Liters for one bag of 25 Kg). Mix the applying quantities in 30 minutes.

Curing

CAPISEAL crystalline waterproofing system application must be kept moist for a minimum of 48 hours. After initial set, moist curing, using continuous water spray is recommended. Treated surfaces shall be fog sprayed 3 to 4 times daily for the 48 hour period. For warmer climates, more frequent spraying may be required. It is important to keep the CAPISEAL crystalline waterproofing system moist to allow the crystal formation to occur. The surfaces shall be protected from foot traffic for 48 hours or heavy traffic for 7 days. Freshly applied CAPISEAL^TM crystalline waterproofing system must be protected from extreme weather conditions such as rain, strong winds, high temperatures and freezing for a period of not less than 48 hours after application. A minimum of 7 days of air curing shall be allowed prior to immersing the surface in water.

Technical Data:  

PARAMETERS	SPECIFICATION	TEST RESULTS
Appearance		Grey coloured free flowing powder
Pot life of the mixed material @ 30°C and @ 60% RH, mins		20-30
Mixed Density, kg/l		1.85
Mix Ratio, Water:Powder by weight		1:3
Resistance to Positive pressure		>10 bar
Resistance to Negative pressure		>10 bar
Static crack accommodation	ASTM C 1305	No cracking up to 1 mm
Carbonation resistance (3 weeks)	Taywood Method	No Carbonation observed
Chloride ion penetration resistance, % (reduction against control)	ASTM C 1202: 97	90
Water Permeability, mm	DIN 1048 (Pt. 5):1991	No penetration observed at water pressure of 5 bars

Technical Support:

Durabuild offers a comprehensive range of waterproofing products and coatings. In addition, Durabuild offers technical support service to specifiers, end users and contractors, as well as on-site technical assistance in locations all over the country.

Coverage:

 CAPISEAL^TM is approximately 1-1.5 kg /m² per application by brush depending on the surface texture and porosity.

Packaging:

20 kg pails

Shelf Life:

CAPISEAL^TM crystalline waterproofing system concentrate should be stored in protected, dry areas. When left in original unopened package, CAPISEAL^TM crystalline waterproofing system will maintain its design performance characteristics for 12 months.

Health & Safety:

CAPISEAL^TM crystalline waterproofing system contains chemicals that may cause irritation to the eyes and skin. Goggles, rubber gloves and long sleeves should be worn when working with these products. Read warnings noted on product package and refer to product material safety datasheet (MSDS) prior to use.