FSE 523 — Crack Injection Adhesive

Ultra-low-viscosity two-component epoxy for pressure injection into fine concrete cracks.

FSE 523 — Crack Injection Adhesive

FSE 523 — Crack Injection Adhesive

Two-component, low-viscosity, solvent-free epoxy resin for restoring structural continuity and load transfer capacity to cracked concrete, masonry, timber, and other substrates. Ultra-low viscosity (≤ 300 mPa·s) allows complete penetration of cracks as narrow as 0.1 mm under low-pressure injection or gravity. Zero shrinkage ensures a permanent, monolithic bond across crack faces.

FSE523 Structural Crack Injection Ultra-Low Viscosity Solvent-Free Zero Shrinkage
PropertyValue
AppearanceA: grey/white; B: grey/white; Mixed: grey/white
Mix RatioA:B = 2:1 by weight
Packaging20 kg (A) + 10 kg (B); also injection cartridges
Mixture Viscosity≤ 300 mPa·s
Pot Life150 min (10°C) / 40 min (23°C) / 30 min (30°C)
Service Temperature−5°C to +40°C
Tensile Strength≥ 25 MPa
Elastic Modulus≥ 1.5 GPa
Elongation at Break≥ 1.8%
Flexural Strength≥ 30 MPa
Compressive Strength≥ 80 MPa
Density1.1 ± 0.1 g/cm³
Linear Shrinkage≤ 0.3%
Steel-to-Steel Shear (ASTM D1002)≥ 25 MPa
Bond to Dry Concrete (ASTM C882)≥ 2.5 MPa (concrete failure)
Bond to Wet Concrete≥ 1.8 MPa (concrete failure)

Applications

  • Structural crack repair in beams and slabs
  • Bridge crack injection
  • Parking deck crack sealing
  • Column crack restoration
  • Tunnel crack treatment
  • Dam and reservoir crack repair

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