Over time, concrete structures can suffer damage due to concrete decay, cracking, or aging. This kind of damage affects not only the appearance but also the safety of the structure. Timely action prevents high repair costs and extends the lifespan of your structure.
At SealteQ, our innovative techniques and certified specialists deliver durable, reliable concrete repairs and renovations—protecting your structure for the future.
Concrete damage can arise in several ways, often through a combination of chemical attack, moisture ingress, and physical loading. The most common causes are related to environmental factors such as weather conditions, de-icing salt, or intensity of use. Below we explain the four main causes of concrete damage.
A common cause of concrete damage is carbonation. Carbon dioxide (CO₂) from the air reacts with moisture in the concrete, lowering the pH value and causing the reinforcement to rust. The corrosion makes the steel expand, leading to cracking and spalling. You can find more information on our page about carbonation in concrete.
In coastal areas and locations where a lot of de-icing salt is used, chlorides can penetrate the concrete. These substances accelerate reinforcement corrosion and thus cause severe chloride damage to concrete.
Repeated temperature fluctuations between freezing and thawing create microcracks in the concrete. Water then penetrates, freezes again, and expands—resulting in spalling.
Intensive use, wear, or heavy impact can also affect concrete. Think of the loads on bridges or parking garages, where continuous stress and movement occur.
You can recognize damage to concrete by visible signs such as cracks, spalling, rust stains, and exposed reinforcement. Concrete may also sound hollow when tapped, or coatings may delaminate. These features often indicate underlying concrete damage such as concrete decay or reinforcement corrosion.
We begin every concrete repair and concrete renovation project with a thorough inspection. We perform tests such as cover measurements, potential mapping, and chloride analyses to determine the exact cause and extent of the damage.
Depending on the type and extent of the damage, SealteQ selects a technique that is both effective and sustainable. From traditional concrete repairs to structural strengthening and preventive protection, we master multiple methods.
For damage caused by carbonation, the affected concrete is removed by hand, the reinforcement is treated, and the surface is restored with repair mortar. This approach is suitable for local damage and areas with limited deterioration.
Shotcrete is applied to vertical or sloped surfaces, such as tunnel walls and concrete swimming pools. The mix is sprayed under high pressure, ensuring strong adhesion—even in hard-to-reach areas.
For cracks or leaks, we use concrete injection. Resins or other materials are injected into the concrete to make it watertight and prevent further damage.
Cathodic protection prevents corrosion in affected reinforcement using electrochemical techniques. This method is especially suitable for long-term protection of structures such as bridges and viaducts.
When additional load-bearing capacity is required, we bond carbon reinforcement to the concrete. This lightweight, high-strength material strengthens the structure without adding extra weight.
With a concrete coating, we protect floors, ceilings, or facades against moisture, wear, and chemical influences. It extends the lifespan and often also improves the appearance of the structure.
A cement-based mortar used to fill and strengthen damaged areas of concrete.
For bonding and injecting cracks. Epoxies offer high adhesion and strength.
These protect exposed reinforcement steel and prevent further corrosion.
By finishing the concrete with a special coating, we provide protection against moisture and external influences. Read more about our concrete coating solutions.
Upon completion, you will receive clear maintenance advice. If desired, we will draw up a maintenance plan, including an assessment of the remaining service life of the structure.
Our concrete repairs are used across various sectors:
At SealteQ, we believe in the value of sustainable restoration. Concrete repair extends the service life of existing structures and prevents unnecessary demolition and new construction. This not only saves costs, but also contributes to a circular economy and reduced CO₂ emissions. Our approach aligns with ESG objectives and responsible construction. You can read more about our methods and standards under quality and safety and certification.
Concrete damage often results from carbonation, chloride ingress, freeze–thaw cycles, and mechanical loading. This can lead to cracking, spalling, and rust formation.
Watch for cracks, spalling, rust stains, exposed reinforcement, or hollow-sounding concrete. Peeling or delaminating coatings can also be a warning sign.
Concrete consists of cement, aggregates (sand and gravel), and water. This mix hardens into a stone-like material as it cures.
Damaged or poor-quality concrete is restored by removing loose, deteriorated areas and filling the damage with repair mortar or injection resin. Cracks and holes are sealed with specialist repair materials, after which the concrete can be protected with coatings against future deterioration.
Concrete can be repaired with concrete repair mortar, epoxy resin, or polyester filler. Large holes and cracks are typically filled with repair mortar for stability; for smaller or deeper defects, epoxy or polyester fillers can also be used due to their strong adhesion and durable fill.
The damage can worsen, leading to higher repair costs, structural risks, and a shorter service life for the structure.
Curious about the condition of your concrete structure? Our specialists are ready to provide non-binding advice or an inspection report. Contact us to schedule an on-site appointment.
