1. Introduction
Epoxy repair systems are two-component resin-based materials designed for structural bonding, grouting, and crack injection.
They offer very high strength, adhesion, and chemical resistance, suitable for industrial and high-load conditions.
2. Subcategories
Type | Description | Application |
Epoxy Mortar | Epoxy resin mixed with graded quartz sand; trowel-applied. | Structural patching, nosing, heavy-duty flooring. |
Epoxy Grout (Flowable) | Free-flowing epoxy resin-based grout. | Baseplates, machine foundations, bridge bearings. |
Low-Viscosity Crack Injection Resin | Thin epoxy that penetrates microcracks to rebond concrete. | Structural crack sealing (<0.2 mm). |
Epoxy Bonding Agent | Applied before concrete overlay. | Old-to-new concrete bonding, patch bonding. |
3. Standards
Standard | Test |
ASTM C881 | Bond strength & viscosity classification |
ASTM C579 | Compressive strength |
EN 1504-4 | Structural bonding materials |
IS 13278 | Epoxy resins for concrete repair |
4. Performance (Typical Ranges)
Property | Value |
Compressive Strength | 70–90 MPa |
Flexural Strength | 25–35 MPa |
Bond Strength | ≥3.5 MPa |
Pot Life | 30–60 min |
Curing | 24–48 hrs |
Typical Properties
- Compressive strength: 70–100 MPa
- Bond strength: >2.5 MPa
- Tensile strength: 10–20 MPa
- Chemical resistance: Excellent
- Shrinkage: Nil
Consultant Guidance
- Use low-viscosity epoxy injection for structural crack sealing.
- Epoxy mortar for heavy-duty impact zones and chemical exposure areas.
- Epoxy grouts under dynamic machinery or bridge bearings.
- Always confirm substrate moisture <4% before application.