Structural Crack Repair
Assessing cracks in structural members and permanently restoring the section’s integrity; a holistic approach from concrete repair to structural injection.
Every crack is a message; it is read first, then repaired.
Cracking in concrete is inevitable; but not every crack says the same thing. Some are merely superficial traces of shrinkage, while others signal that the member is under strain, that the reinforcement is exposed to corrosion, or that the structural system has a behavioral problem. That is why crack repair begins not with a filler but with a question: why did this crack form, and is it still moving?
The method changes with the answer. Structural cracks whose movement has stopped are rejoined monolithically with epoxy injection; in corrosion damage, the reinforcement is cleaned and protected and the section rebuilt with repair mortars; cracks that are still moving are resolved not by filling but with a detail that accommodates the movement. Our applications respect this distinction and run on record.
- Diagnosis first: No method is selected before the crack’s cause and movement are established.
- Monolithic rejoining: Structural injection makes the section behave as one body again.
- Reinforcement protection: Corrosion is stopped, the reinforcement protected and the section rebuilt.
- Aimed at permanence: The repair targets the cause, not the symptom.
On every member whose integrity is in question.
Crack repair arises in different forms across all members of the structural system.
Beam and column cracks
Rejoining load-induced structural cracks.
Slab cracks
Repairing deflection- and load-induced cracks.
Shear walls
Repairing shear cracks after an earthquake.
Corrosion damage
Repairing spalled concrete cover and reinforcement.
Cold joint problems
Correcting discontinuities at casting joints.
Industrial floor slabs
Structural cracks in ground-bearing slabs.
The four conditions for touching the structure.
Every intervention on the structural system follows the same discipline: diagnosis, design, supervised application and complete records.
Diagnosis and design
The existing condition is documented; the intervention is limited to the scope and detail defined by the strengthening design.
Surface and member preparation
The application surface is brought to the condition the design requires; the preparation defines the system’s life.
Supervised application
The application is carried out under civil engineering supervision, adhering to the manufacturer’s system approvals.
Records and handover
Every stage is documented; the work is handed over with a traceable application file.
The resin reaches the deepest point of the crack.
In structural injection, low-viscosity epoxy is driven under pressure into the crack’s full depth; the section becomes one body again.
- Surface sealing tapeThe temporary seal preventing the resin from escaping.
- Injection portsThe points where the resin is fed into the crack under controlled pressure.
- Crack filled with epoxyThe filling rejoining the section in monolithic form.
- Existing reinforced concrete memberThe member, its cause and movement assessed beforehand.
A method for the crack’s language.
The method is defined by the crack’s cause, width and movement.
Epoxy injection
Rejoining structural cracks whose movement has stopped.
Section repair
Rebuilding corrosion-damaged zones with mortar.
Reinforcement protection
Cleaning the reinforcement and protecting it from corrosion.
Conversion to a flexible joint
Converting a still-moving crack into a controlled joint.
What is expected of a crack repair.
Correct diagnosis
No method is selected before cause and movement are established.
Monolithic rejoining
The section regains its one-body behavior.
Reinforcement protection
Corrosion is stopped and prevented.
A contribution to watertightness
Cracks that have become water paths are closed.
A permanent result
The cause is targeted, not the symptom.
Traceable records
The repair map and file are handed over.
The scope is defined by how widespread the cracking is.
The classification below is indicative only. The final scope is defined by the crack map and the condition survey.
Repair, or strengthening?
A crack is usually a consequence; if the cause is inadequate capacity, the repair must be completed by strengthening.
Technical documents for members
Technical data sheets, safety data sheets and application specifications are available in the membership area open to corporate clients, architects and engineers. Access is free with membership.
Other strengthening systems
Let’s read your cracks first , then repair thempermanently.
Share photographs and locations of the cracks you have observed; let us inspect them on site and define the right method together.