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| Contie Seal |
Contite Seal is a unique chemical treatment for concrete corrosion protection and waterproofing by crystallization. Manufactured in the form of a dry powder compound Contite Seal protects and waterproofs concrete by the process of osmosis.
Because the chemicals in Contite Seal have an affinity with water the crystalline formation migrates throughout the pores and capillary tracts of concrete sealing the concrete against intrusion of water, chemicals, sewage and other harmful chemicals. The active chemicals penetrate the concrete and react with free lime and moisture to form a subsurface membrane effectively sealing the concrete. The layer formed allows the passage of water vapour from the inside of the structure (the concrete breathes) whilst waterproofing/sealing the surface against sea water, aggressive ground waters, waste water and certain chemical solutions.
USES & ADVANTAGES
Contite Seal can be applied to all structurally sound concrete. Typical areas of application are :- sewage and waste water treatment tanks, reservoirs, tunnels, manholes, caissons, underground vaults and structures, foundations, parking decks, planter boxes, roof gardens,
podiums and swimming pools. Contite Seal provides concrete protection against waste water, sewage, certain chemical solutions, dilute intermittent acids, carbonation, salt water, sulphates, and other harmful materials.
podiums and swimming pools. Contite Seal provides concrete protection against waste water, sewage, certain chemical solutions, dilute intermittent acids, carbonation, salt water, sulphates, and other harmful materials.
Advantages include:
• Resistant to most aggressive substances in the pH range 3-11 constant contact, and 2-12 periodic contact.
• Protects concrete and steel rebar from deterioration. • Non toxic. No solvents. No harmful vapours.
• Can apply to green or moist concrete.
• Protects concrete and steel rebar from deterioration. • Non toxic. No solvents. No harmful vapours.
• Can apply to green or moist concrete.
• Fast tracks projects.
• Becomes an integral (internal) part of the concrete therefore it does not rely on the coating to protect or waterproof concrete.
• Seals minor shrinkage cracks and will reactivate after many years in the presence of water.
• Does not require costly surface priming or leveling prior to application as for other coatings.
• Cannot puncture, tear or come apart at the seams as with other protection systems.
• Less costly to apply than other systems.
• Does not require protection from backfill.
• Use in underground structures from the inside (negative side).
• Extensively used for concrete repair work and is particularly useful to apply on the negative side of water retaining or underground structures both above and below grade.
Appearance: Grey powder
Wet Density: Approx. 1.90
Chloride Content: Nil
Water Permeability: <1.9 x 10-14 cm/sec
(CRD-C-48-73) after 28 days
Non Toxic: Approved for potablewater use Chemical Resistance:
ASTM C-267-77 resists chemicals in pH range 3-11
Slurry coat
Apply Contite Seal with a stiff fiber brush. Scrub well into the damp wall filling all pores and finish with final strokes in one direction. Keep a wet edge. After the first coat has set but while it is still green apply a second coat, if this is not possible prewater before application of the second coat.
Apply Contite Seal with a stiff fiber brush. Scrub well into the damp wall filling all pores and finish with final strokes in one direction. Keep a wet edge. After the first coat has set but while it is still green apply a second coat, if this is not possible prewater before application of the second coat.
Dry Shake Method
For Newly Poured Concrete - Use Contite Seal directly from the container. Wearing rubber gloves distribute the powder evenly by hand over the freshly poured concrete at 1.6 kg/m2 before the final trowelling work. It is recommended to distribute approximately 50% of the powder in one direction with the remaining 50% at right angles to the first application.
For Newly Poured Concrete - Use Contite Seal directly from the container. Wearing rubber gloves distribute the powder evenly by hand over the freshly poured concrete at 1.6 kg/m2 before the final trowelling work. It is recommended to distribute approximately 50% of the powder in one direction with the remaining 50% at right angles to the first application.
Release the powder as close to the wet concrete as is possible. A roughened finish is recommended on the first coat to ensure adequate adhesion of the second, finally trowel the concrete to the required finish.
For Under Slab Waterproofing - Ensure that all debris is removed from lean concrete’s surface including soil, grease, oil etc. Either apply in slurry coat or sprinkle by dry shake method on to the concrete just before pouring the slab at 1.2 kg/m2. If delays in pouring concrete keep Contite Seal moist by mist/fog spraying water.
Existing Joints
Existing Joints
Construction joints, cold joints and non-leaking joints greater than 0.25 mm wide must be routed out to a minimum 25 mm wide by 25 mm in depth to reach sound concrete, the profile of the routed joint should form a “U” shape.
Contite Seal Mortar should be mixed with water to provide a dry pack material which must then be rammed into the routed out joint.
New Construction Joints
New Construction Joints
Install Contite Waterstop butyl rubber & bentonite waterstop at the centre of the joint at least 7.5 cm. from the concretes exterior. A dry pack sealing strip of Contite Seal Mortar should be rammed into a prepared rout at least 25 mm. by 25 mm. Optionally & if high water pressure is anticipated a coat of Contite Seal Slurry or dry shake may be applied to the joints surface & over the waterstop at 1.5 kg/m2. Keep material moist by mist spraying with water before pouring concrete.
Contite Seal is alkaline, use protective gloves, glasses and protect skin. If gets into eyes clean out with water immediately, wash off skin with soap and water immediately.
Vietthai trading co.,ltd Head Office: Lot. K81C Thu Trung - Dang Lam – Hai An Dist – Hai Phong City, VietnamTel: 0313.558.619 / Fax: 0313.558.690 Email: chivietthai@chongtham.vn Website: www.Chongtham.vn :: www.vietthaico.com |
Branch in Hanoi P202 - C6 Building Blocks 2 - My Dinh 1 Urban - Tran Huu Duc St - Tu Liem Dist – Ha Noi City, VietnamTel: +84-4-6287 4144 / Fax: +84-4-6287 4147 Email: vietthai@chongtham.vn Website: www.Chongtham.vn :: www.vietthaico.com |