What is epoxy crack injection?
Epoxy injection uses a low-viscosity structural resin to bond suitable, stable cracks in concrete and help restore continuity across the cracked section.
When is it appropriate?
It is typically considered for dry or controllably dry, non-moving cracks where structural bonding is part of the repair objective and the crack geometry permits complete injection.
Typical applications
- Beams and slabs
- Columns and walls
- Bridge elements
- Precast and cast-in-place concrete
Execution workflow
- Review assessment and design basis
- Confirm method, access and compatible system
- Prepare substrate and control the work area
- Install or apply under documented procedure
- Inspect, record and hand over
Materials and systems
The system commonly includes surface seal paste, injection ports or packers, a low-viscosity two-component epoxy and suitable cleaning and finishing materials.
Product families are selected generically at planning stage and specified only after compatibility, performance requirements and site conditions are confirmed.
Quality control approach
Controls are matched to the intervention and may include substrate acceptance, batch and shelf-life checks, mixing records, temperature and moisture readings, installation sequencing, pull-off or proof testing where specified, photographic records and signed inspection points.
Limitations and engineering considerations
Frequently asked questions
It is typically considered for dry or controllably dry, non-moving cracks where structural bonding is part of the repair objective and the crack geometry permits complete injection.
No. Suitability depends on verified condition, engineering requirements, substrate, exposure, access and the intended service life. Project-specific assessment and design may be required.
The project method should define substrate acceptance, material checks, environmental limits, installation records, hold points, inspection and handover documentation appropriate to the system.