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    Surface Treatment

    Megabond ACR acrylic latex bonding agent and mortar admixture by MATEX

    Megabond Acr

    Acrylic Based Bonding Agent and Admixture

    MEGABOND ACR is a high-quality acrylic co-polymer bonding agent designed to enhance the adhesion and performance of cementitious systems. It improves plasticity, reduces cracking, and increases resistance to chemicals, abrasion, and flexing. Resistant to hydrolysis and UV exposure, MEGABOND ACR is suitable for both internal and external environments. It enhances workability, impermeability, and durability in mortars and concrete. The product also improves resistance to freeze-thaw cycles and chloride ion penetration. Ideal for concrete repairs, rendering, or overlaying old surfaces. MEGABOND ACR ensures stronger, more durable finishes in demanding construction and repair settings.

    Technical data:
    • Appearance : Milky White Liquid
    • Application Temperature : 7°C to 40°C
    • Service Temperature : -5°C to 80°C
    • Coverage : 5 to 7 m²/lit as bonding agent
    • Packaging : 20 liter jerry can , 200 liter drum
    Related Documents:

    How to Apply Megabond Acr

    Megabond ACR is used neat or diluted with water, as a bonding slurry or as an admixture in cementitious mixes to the mix designs in the TDS.

    1. Prepare the surface. Surfaces must be sound and free from laitance, oil and grease. Clean hard or deep contamination by mechanical scrubbing or grit blasting to fresh, clean concrete.
    2. Prepare repairs and screeds. For concrete repair, remove all damaged parts and protect steel reinforcement with Lavafer or Lavazinc EP. For screeds, saturate the substrate with water.
    3. Mix. Pour Megabond ACR, neat or diluted as required, into a clean pail and slowly add the cement/sand while mixing with a low-speed mixer for 3-4 minutes, scraping the sides. Remix to a smooth consistency; do not overmix.
    4. Apply bonding slurry. For a bond coat to receive renders, screeds or repair mixes, use 50 kg cement with 1-2 kg/m² Megabond ACR. Always apply the bonding slurry before the screed and place the screed while the slurry is still fresh.
    5. Use in mortars and screeds. Follow the TDS mix designs for waterproof slurry (50 kg cement, 25 kg 0-0.3 mm sand, 25 liters Megabond ACR, 2-3 kg/m²), repair mortars, polymer concrete (20-30% by weight of cement) and polymer screeds laid at 10-25 mm.
    6. Clean tools. Clean all tools with water before the product fully dries.

    Summary of the method in the Megabond Acr Technical Data Sheet. Always follow the full TDS on site.

    Standards & Test Methods

    StandardTitleReferenced for
    ASTM C1059Standard Specification for Latex Agents for Bonding Fresh To Hardened ConcreteType 2 latex bonding agent

    Standards and test methods as referenced in the Megabond Acr Technical Data Sheet. Values in the TDS are typical laboratory results under standard conditions.

    Frequently Asked Questions

    What is the coverage of Megabond ACR as a bonding agent?

    As a surface applied bonding agent, Megabond ACR covers 5-7 square meters per liter, depending on substrate porosity.

    What is the application temperature for Megabond ACR?

    +7°C to 40°C. The TDS lists temperature resistance of -5°C to +80°C.

    How much Megabond ACR is used in polymer concrete?

    For flooring grade polymer concrete mixes, the TDS mix design is 20-30% Megabond ACR by weight of cement.

    Can Megabond ACR be used for waterproof slurry?

    Yes. The TDS mix design is 50 kg cement, 25 kg sand (0-0.3 mm) and 25 liters Megabond ACR, applied at 2-3 kg/m², for basements, tunnels, reservoirs and pipes.

    How is Megabond ACR packaged and stored?

    It is supplied in 20 liter jerricans and 200 liter drums. Store between 10°C and 30°C away from direct sunlight; shelf life is 12 months in unopened original packing.

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