Acid-proof Render

VITCAS Acidcas R – Acid Resistant Render/Patch, 1400°C

VITCAS Acidcas R Acid Resistant Render is a two-part, silicate-based refractory coating designed to protect existing concrete and masonry surfaces against acid attack. Rated to 1400°C / 2550°F, it provides a minimum 96% acid resistance in accordance with BS 784, making it suitable for demanding chemical processing and industrial environments.

Also known as Acidcas Patch, this acidproof render forms a protective layer on suitable existing structures, including tanks, containment areas and chimney linings. For vertical applications, the material must be applied over a suitably supported metal reinforcing mesh.

Key Features and Benefits

• High Temperature Resistance: Maximum service temperature of 1400°C / 2550°F.
• Acid Resistance: Minimum 96% acid resistance in accordance with BS 784.
• Two-Part Silicate System: Supplied as two separate components: 20 kg of dry powder and 8 kg of liquid, to be mixed before application.
• Protective Refractory Coating: Designed to improve the acid resistance of existing concrete and masonry structures.
• Chemical Resistance: Resistant to most acids, excluding hydrofluoric acid.
• Industrial Applications: Suitable for specified high-temperature and chemically aggressive environments.

Applications

• Chemical and Petrochemical Plants: Protective rendering of suitable concrete and masonry surfaces exposed to acidic conditions.
• Industrial Tanks and Vessels: Acid-resistant linings for compatible existing structures.
• Chimneys and Flue Ducts: Protection of suitable linings exposed to acidic gases and condensates.
• Containment Areas: Protective coating of suitable concrete floors, bunds and secondary containment structures.
• Food Processing Facilities: Acid-resistant protection in appropriate industrial processing areas, excluding direct food-contact applications unless separately approved.

Application Guidelines

1. Prepare the Substrate: Ensure the existing surface is sound, clean and free from loose material, grease and contamination.
2. Provide Reinforcement: For vertical surfaces, install suitable metal mesh support in accordance with the lining design.
3. Mix Both Components: Thoroughly mix the supplied 20 kg of dry powder with the 8 kg liquid component.
4. Apply the Render: Work the material onto the prepared surface or reinforcing mesh to achieve the specified coverage and thickness.
5. Allow to Set: Follow the manufacturer's curing and drying instructions before exposing the finished lining to chemicals or elevated temperatures.

Please note: Acidcas R is not resistant to hydrofluoric acid and is unsuitable for prolonged alkaline exposure. Chemical compatibility, substrate condition, reinforcement and lining design must be assessed for the intended service conditions.