Epoxy Crack Injection

What is Epoxy Resin Injection for Concrete Repair?

Epoxy resin injection is a highly effective method used to repair and restore cracked concrete. This technique is ideal for structurally re-bonding cracks ranging from 0.2mm to 5.0mm in width in vertical, horizontal, and overhead concrete elements. It is specifically designed for cracks that are dormant and relatively dry, ensuring a strong and durable repair.

Benefits of Epoxy Resin Injection

  • Structural Integrity: Re-bonds cracked concrete, restoring its original strength and stability.
  • Versatile Application: Suitable for various orientations—vertical, horizontal, or overhead.
  • Precise Repair: Targets cracks with pinpoint accuracy, ensuring minimal disruption to the surrounding area.
  • Long-Lasting Solution: Provides a durable, water-resistant repair that prevents further damage.

The Process of Epoxy Resin Injection

1. Assessment of Cracks

  • Inspect the concrete to determine the size, depth, and extent of the cracks.
  • Ensure the cracks are dormant and dry, as epoxy resin is not suitable for active or wet cracks.

2. Surface Preparation

  • Clean the surface around the cracks to remove dust, debris, and any loose concrete particles.
  • Seal the surface of the crack with a temporary epoxy paste to prevent resin leakage during injection.

3. Installation of Injection Ports

  • Attach injection ports along the length of the crack using the epoxy paste. These ports allow precise delivery of the resin into the crack.
  • Space the ports appropriately to ensure even distribution of the resin.

4. Mixing the Epoxy Resin

  • Prepare the epoxy resin according to the manufacturer’s instructions, ensuring the correct ratio of resin to hardener for optimal performance.

5. Injection of the Epoxy Resin

  • Use a specialized injection gun or pump to inject the resin into the ports, starting from the lowest point in vertical applications or one end in horizontal applications.
  • Continue injecting until the resin flows out of the adjacent port, ensuring the crack is completely filled.

6. Curing the Resin

  • Allow the epoxy resin to cure as per the manufacturer’s guidelines, which typically takes several hours to a day depending on environmental conditions.
  • Once cured, the resin forms a strong bond, effectively sealing and reinforcing the crack.

7. Finishing Touches

  • Remove the injection ports and grind down any excess resin or epoxy paste for a smooth, clean surface.
  • Apply a protective coating if required to enhance durability and resistance to environmental factors.

Why Choose Epoxy Resin Injection?

Epoxy resin injection is a cost-effective and efficient solution for repairing cracked concrete. It restores the structural integrity of the concrete while minimizing disruption to the surrounding area. Whether for residential, commercial, or industrial projects, this method ensures a long-lasting repair that meets the highest standards of quality.