Epoxy Injection Crack Repair & Durability Solutions
Cracking in reinforced concrete threatens structural stability and allows water or chlorides to reach the steel, leading to corrosion and progressive damage. ZRETE’s epoxy injection technology fills these cracks from the inside, restoring monolithic strength and providing permanent waterproofing.
Fine cracks (<0.3 mm) are difficult to penetrate completely.
Moisture and contaminants reduce bonding and curing quality.
Ordinary resins may shrink, leaving voids or secondary cracks.
ZRETE addresses these issues with specialized low- and medium-viscosity injection systems engineered for complete penetration, strong adhesion even on damp concrete, and non-shrink performance for lasting repair.
High Strength: Compressive strength up to 85–95 MPa (structural grade).
Variable Viscosity Range: From ultra-low to medium for different crack sizes.
Deep Penetration: Capillary filling of cracks as fine as 0.1 mm.
Excellent Chemical & Water Resistance: Prevents chloride ingress and corrosion.
Durability: Long-term aging stability and minimal maintenance.
| Product | Viscosity (25 °C) | Compressive Strength (MPa) | Application & Description |
|---|---|---|---|
| HP-1 Epoxy Injection Resin | Low (≈ 30 mPa·s) | ≥ 85 | Ultra-low viscosity for fine cracks and deep penetration. Excellent adhesion and curing for structural crack repair in foundations and beams. |
| HP-2 Epoxy Injection Resin | Medium (≈ 120 mPa·s) | ≥ 85 | Medium-viscosity resin for dam or structural joints. Balances flow and body to avoid resin leakage in wider cracks. |
| HP-3 Epoxy Injection Resin | Low (≈ 60 mPa·s) | ≥ 90 | High-strength, low-viscosity resin designed for tunnel cracks and void filling under variable moisture conditions. |
| HP-4 Epoxy Injection Resin | Medium (≈ 100 mPa·s) | ≥ 90 | Medium-viscosity resin for heavy concrete structures such as dams; ideal for vertical cracks requiring controlled flow. |
| JGN804 Epoxy Injection Resin | Low (≈ 40 mPa·s) | ≥ 90 | Ultra-fine crack injection resin with strong adhesion and fast strength gain. Suitable for structural crack repair under dry or damp conditions. |
| JGN804A Epoxy Injection Resin | Very Low (≈ 25 mPa·s) | ≥ 85 | Deep-penetration epoxy for micro-cracks and hairline defects. Ensures complete capillary filling and watertight bonding. |
| JGN806 Crack Sealing Adhesive | — (Thixotropic, Non-Sag) | — | Paste-type epoxy adhesive for sealing surface cracks, levelling uneven areas, and preventing resin leakage during injection. |
| Crack Width | Recommended Product | Key Feature |
|---|---|---|
| Hairline to 0.2 mm | HP-1 / JGN804A | Ultra-low viscosity, deep penetration |
| 0.2 – 0.5 mm | HP-3 / JGN804 | Low viscosity, structural bonding |
| 0.5 – 2 mm | HP-2 / HP-4 | Medium viscosity, void filling |
| Surface sealing before injection | JGN806 | Non-sag, surface protection |
ZRETE’s epoxy crack repair system covers all crack ranges—from micro-fissures to structural voids—with dedicated viscosity levels and mechanical performance. Each formulation ensures deep penetration, high compressive strength, chemical resistance, and non-shrink curing, enabling rapid, reliable, and durable rehabilitation of critical concrete structures.
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