JGN804A is an advanced two-component epoxy injection resin with ultra-low viscosity for high-strength, deep penetration sealing of hairline cracks in concrete and metal structures.
Summary Benefits at a Glance:
Extremely low viscosity (86 mPa·s) for maximum flow into fine cracks.
Superior compressive (98 MPa) and tensile (61 MPa) strengths for long-lasting repairs.
Outstanding dry (6.1 MPa) and wet (4.8 MPa) bonding for humid conditions.
High penetration ratio (750%) and anti-seepage (1.5 MPa) for comprehensive protection.
Product Introduction
JGN804A epoxy injection resin is optimized for precision crack injection in narrow fissures, offering exceptional strength and resistance in harsh environments like marine or industrial applications.
This solvent-free, non-toxic formula penetrates deeply (viscosity <100 mPa·s), cures without shrinkage, and provides superior mechanical properties including high tensile shear (25.9 MPa) and bending strength (86 MPa).
Compliant with industry standards, it's ideal for bridges, tunnels, foundations, and anti-corrosion sealing, ensuring reliable performance in wet or high-stress conditions.
Product Parameters
| Property | Required | Actual |
| Initial Viscosity (mPa·s) | <100 | 86 |
| Operable Time (min) | >30 | >30 |
| Compressive Strength (MPa) | >64 | 98 |
| Tensile Strength (MPa) | >40 | 61 |
| Dry Bonding Strength (MPa) | ≥4.0 | 6.1 |
| Wet Bonding Strength (MPa) | ≥2.4 | 4.8 |
| Tensile Shear Strength (MPa) | / | 25.9 |
| Bending Strength (MPa) | / | 86 |
| Anti-seepage Pressure (MPa) | / | 1.5 |
| Penetration Pressure Ratio (%) | / | 750 |
Product Usage
Mix A and B at 3:1 ratio, stir mechanically for 4-5 minutes.
Clean crack areas, seal surfaces, install ports (3-6 inches apart), inject starting low pressure until full.
Cure (pot life >30 min at 25°C, full cure 3-5 days), verify integrity, and finish.
Use for fine crack repair in concrete/metal, anti-corrosion sealing, or gravity/pressure injection in vertical/overhead positions.
Packaging and Storage:
Component A: 9kg/drum
Component B: 3kg/drum
Shelf Life: 12 months in proper storage conditions
Product Documentation
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Our products have undergone rigorous testing at our national testing laboratory (CABR testing center co., ltd). Renowned Fortune Global 500 firms such as China Railway Group Limited, China Communications Construction Company Limited, and Sinohydro are among our esteemed clients.
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