Crack Injection & Epoxy Repair
Precision crack injection systems that restore monolithic integrity to cracked concrete elements using engineered epoxy and polyurethane resins.
Concrete cracks compromise structural integrity, allow water infiltration, and accelerate reinforcement corrosion. Professional crack injection is the only repair method that fully restores the monolithic bond across a crack plane. Texas Structural Concrete uses pressure-injection techniques with structural-grade epoxy resins for load-bearing cracks and flexible polyurethane resins for active water leaks. Our technicians are trained in both low-pressure and high-pressure injection methods, and every repair is engineered to match the crack type, width, depth, and structural demands of the application.
Why Choose TSC for Crack Injection & Epoxy Repair
Full Structural Bond
Epoxy injection restores the crack plane to a strength equal to or greater than the surrounding concrete.
Water Infiltration Stop
Polyurethane injection permanently seals active water leaks in foundations, walls, and below-grade structures.
Corrosion Prevention
Sealing cracks prevents moisture and chlorides from reaching reinforcing steel, stopping the corrosion cycle.
Non-Destructive
Crack injection repairs concrete without removing material, preserving the existing cross-section and reinforcement.
Our Crack Injection & Epoxy Repair Process
Crack Evaluation
Assess crack type (structural vs. non-structural), width, depth, activity (dormant vs. active), and cause to select the appropriate injection material.
Surface Sealing
Crack surfaces are sealed with fast-setting epoxy paste to contain injection material and prevent leakage during pressurization.
Port Installation
Injection ports are installed at calculated intervals along the crack to ensure complete penetration of the repair material.
Pressure Injection
Epoxy or polyurethane resin is injected under controlled pressure, filling the crack from bottom to top until material emerges from adjacent ports.
Verification & Cleanup
Surface seal and ports are removed, injection completeness is verified by coring if required, and surfaces are restored.
Structural Epoxy Injection
For cracks in load-bearing elements — beams, columns, walls, and slabs — structural epoxy injection is the standard of care. We use low-viscosity, high-strength epoxy resins that penetrate cracks as narrow as 0.002 inches. Once cured, the epoxy bond is stronger than the concrete itself, fully restoring the element's structural capacity. Structural epoxy injection is specified by ACI 224.1R and is the preferred repair method for dormant cracks in structural concrete.
Polyurethane Leak Sealing
Active water leaks through concrete cracks require flexible polyurethane injection rather than rigid epoxy. Polyurethane resins react with water to expand and form a flexible, waterproof seal that accommodates minor crack movement. This method is essential for below-grade walls, tunnel linings, water treatment structures, and any application where water is actively flowing through cracks at the time of repair.
Gravity-Fed Crack Sealing
For horizontal surfaces like slabs and bridge decks, gravity-fed crack sealing uses low-viscosity epoxy or methacrylate resins that flow into cracks under gravity. This method is effective for sealing networks of fine cracks over large surface areas and is commonly used in parking structures, warehouse floors, and bridge deck rehabilitation projects.
Frequently Asked Questions
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Contact Texas Structural Concrete for a free consultation on your crack injection & epoxy repair project. Veteran-owned. Nationwide service.