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    Rebar Corrosion Protection

    Lavafer two component corrosion-proof cement slurry for steel reinforcement by MATEX

    Lavafer

    Corrosion-Proof Cement Slurry for Steel Reinforcement

    LAVAFER is a two-component, cementitious corrosion-inhibiting slurry designed to protect steel reinforcement in concrete repair systems. Part A contains hydraulic binders and additives, while Part B is a polymer emulsion enriched with migrating corrosion inhibitors. When applied, it forms a dense, water-resistant barrier that provides strong anodic passivation and long-term corrosion protection. LAVAFER enhances adhesion between steel and concrete and serves as an effective primer for repair mortars, especially within the MATEX system. It significantly extends the service life of reinforced structures exposed to aggressive environments, making it an essential component in high-performance concrete rehabilitation and protection strategies.

    Technical data:
    • Appearance : Green dense mix
    • Application Temperature : +5°C to +35°C
    • Potlife : 40-45 minutes @ 25°C
    • Coverage : 2.0 kg per 1.10 m² @ 1.0 mm thickness
    • Packaging : 2kg kit
    • Shelf life : 12 months
    Related Documents:

    How to Apply Lavafer

    Lavafer is a two-component cementitious slurry brushed onto cleaned reinforcing steel before repair mortar is placed.

    1. Clean the steel. Clean reinforcement bars of loose particles, cement dust, grease and rust with a steel brush; use sand blasting where rusting or contamination is deep. Make sure the back side of the bars is also cleaned.
    2. Mix. Pour the liquid component (part B) into a clean container, add the powder component (part A) and mix thoroughly for 3 minutes until homogeneous and lump free. Do not add water.
    3. Apply first coat. Brush Lavafer onto the reinforcement immediately after cleaning, at a minimum coat thickness of 1 mm, covering the whole bar surface including the back side. Use the mix within 45 minutes of preparation.
    4. Apply second coat if needed. If necessary, apply a second coat within 24 hours of the first.
    5. Cure before repair. Allow the coating to cure for 4 hours before applying the repair mortars.
    6. Clean tools. Clean tools with water before the product hardens. Hardened material can only be removed mechanically.

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

    Standards & Test Methods

    StandardTitleReferenced for
    EN 1504-7Products and systems for the protection and repair of concrete structures — Reinforcement corrosion protectionListed in the TDS

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

    Frequently Asked Questions

    What is the coverage of Lavafer?

    2.0 kg of Lavafer covers 1.10 square meters at 1.0 mm thickness. Coverage is approximate and depends on site conditions.

    What is the pot life of Lavafer?

    Pot life is 40-45 minutes at 25°C, and the mixture must be applied within 45 minutes of preparation.

    How long should Lavafer cure before applying repair mortar?

    Allow the applied coating to cure for 4 hours before applying the repair mortars. If a second coat is needed, apply it within 24 hours of the first.

    What is the application temperature of Lavafer?

    Lavafer is applied from +5°C to +35°C.

    How is Lavafer packaged?

    It is supplied as a two-component kit: 1.5 kg powder in a plastic bag and 0.5 kg liquid in a bottle. Shelf life is 12 months from production date in unopened original packing.

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