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    Resin Injection

    Conject EP low viscosity two component epoxy crack injection resin by MATEX

    Conject Ep

    Low Viscosity Epoxy Injection Resin

    CONJECT EP is a two-component, low-viscosity epoxy injection resin designed for structural restoration and crack sealing in concrete. Once mixed, it becomes a fluid, solvent-free system ideal for gravity feeding or pressure injection into cracks from 0.2 to 0.8 mm wide. It bonds strongly to concrete and other substrates, providing permanent structural consolidation. CONJECT EP is highly resistant to chemicals and moisture, with no shrinkage or creep under stress. Its impermeability and high elastic modulus ensure reliable stress transfer across cracks, restoring integrity in critical structural elements. Suitable for repairing cracks, bonding concrete sections, and reinforcing damaged structures.

    Technical data:
    • Color/Appearance : transparent to yellowish thin liquid
    • Application Temperature : +5°C to 40°C
    • Potlife : 90 min @ 25°C
    • Complete Curing : 7 days
    • Storage Temperature : 10°C to 38°C
    • Packaging : 4 ltr and 10 ltr kit
    Related Documents:

    How to Apply Conject Ep

    Conject EP is a two-component epoxy resin injected into dry, sound concrete through packers, or poured directly into horizontal cracks.

    1. Prepare the substrate. The support must be perfectly dry, solid and free from inconsistent parts, dust and grease. Mortar and new concrete must be cured for at least three weeks.
    2. Stop running water. Stop any running water with a suitable material such as Hydroplug before injecting; Conject EP should not be used against running water pressure.
    3. Fix and seal packers. Insert injection packers into pre-drilled holes along the crack, spaced according to crack width and depth. Seal between the packers with epoxy mortar so the resin can travel from one point to the next.
    4. Mix. Pour component B (hardener) into component A (resin) and mix carefully with an electric mixer until homogeneous. If mixing part quantities, keep the proportions by volume.
    5. Inject. Inject with standard injection equipment with closed containers at a pressure of at least 3 bar, starting from the lowest or farthest point and working toward the center until resin appears at the next hole. For horizontal cracks pour the product directly; for ceilings and bonding apply with a roller or brush.
    6. Clean equipment. Clean tools and equipment promptly with Armosolvent before the product hardens. Hardened material can only be removed mechanically.

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

    Frequently Asked Questions

    What crack widths is Conject EP designed for?

    The TDS states Conject EP is designed to seal and bond crack widths between 0.2 to 0.8 mm. It should not be used to fill moving cracks.

    What injection pressure is used for Conject EP?

    The injection pressure should be at least 3 bar, using injection packers inserted into pre-drilled holes along the crack. The TDS recommends assigning crack injection to an injection specialist.

    What is the pot life of Conject EP?

    Pot life is 90 minutes at 25°C and 40 minutes at 35°C. Application temperature is +5ºC to +40ºC and complete curing takes 7 days.

    What strength does Conject EP reach?

    After 7 days the TDS gives compressive strength of 70 N/mm², flexural strength >25 N/mm² and tensile strength >15 N/mm². Bond strength is greater than the tensile strength of concrete.

    How is Conject EP packaged and stored?

    It is supplied as a two-component kit in 4 Ltr and 10 Ltr metallic containers. Store in original packing in dry conditions away from direct sunlight between 10°C and 38°C; shelf life is 12 months from production date.

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