Concrete damage repair comprises the interventions carried out to bring the performance of damaged structural elements back to their original level and to restore the safety of the structure. These repair works are critically important, particularly for increasing the durability of structures damaged after earthquakes.
After the Marmara Earthquake of 17 August 1999, the repair and strengthening of many structures came onto the agenda in Turkey. Today, seismic durability analyses of buildings are carried out in various provinces and strengthening works against earthquakes are being pursued diligently. However, the design stage requires as much care as the repair and strengthening process itself, and it calls for advanced engineering knowledge.
Safety Is Restored: The load-carrying capacity and durability the structure had before the damage are restored. Earthquake Resistance: Structural safety against natural disasters such as earthquakes is improved. Economical Solution: Offers a lower-cost alternative to demolition and rebuilding. Long-Lasting Protection: Structures become more resistant to environmental and mechanical effects. Engineering Solutions: Precise and effective repair is achieved with advanced engineering methods. Analysis and Assessment: The condition of the damaged structural elements is assessed. Design: Repair and strengthening solutions suited to the structure are designed. Application: The repair work is carried out by a professional team using the specified methods. Inspection and Testing: The durability of the structural elements is verified by testing after the repair.With advanced engineering knowledge and an expert team in concrete damage repair, Likit İzolasyon offers dependable solutions for your structures. You can contact us to make your damaged structural elements safe and durable again.
Columns and beams where the cover has spalled and the reinforcement has become exposed Concrete surfaces on car park decks and ramps deteriorated by the effect of salt Carbonation damage on bridges, viaducts and retaining walls Zones of chloride-induced corrosion in marine and coastal structures Breakages in precast elements caused by transport and erection Concrete surfaces subject to chemical attack in industrial facilitiesOnce the deteriorated concrete has been removed, the section is rebuilt with a polymer-modified, shrinkage-compensated repair mortar. Trowel application is used on small and medium areas and the spray (shotcrete) method on large surfaces.
A cement or epoxy-based corrosion inhibitor is applied to the cleaned reinforcement. Where the loss of section in a bar exceeds a certain proportion, additional reinforcement is added in accordance with the design.
In deep and extensive damage, formwork is erected and a flowing repair mortar or grout is poured. This is advantageous over trowel application in terms of achieving complete filling with no voids.
1. Damage map: Hollow areas are marked by visual inspection and hammer tapping; the depth of carbonation is measured. 2. Removing the deteriorated concrete: The damaged area is removed until sound concrete is reached. The area behind the reinforcement is opened up so that the corrosion products can be cleaned off completely. 3. Cleaning the reinforcement: The reinforcement is freed of rust by blasting and a corrosion inhibitor is applied. Additional reinforcement is added if necessary. 4. Bonding bridge: The surface is brought to a saturated surface-dry condition and a bonding bridge is applied. 5. Application of the repair mortar: The mortar is applied observing the recommended coat thicknesses and the surface is finished. 6. Curing and protection: Curing is carried out so as to prevent early loss of water; a protective coating or impregnation is then applied. Structural repair mortars are divided into classes R1-R4 within the scope of TS EN 1504-3 ; in load-bearing elements R3/R4 is generally required. Corrosion protection of reinforcement is covered by TS EN 1504-7, and bond verification is carried out to TS EN 1542 . The modulus of elasticity of the repair mortar must be compatible with the existing concrete; an excessively rigid mortar can separate at the edges. Repair only makes good the damage; if the cause is not removed, it recurs in the same area within a short time. Inadequate curing is the most common and most easily prevented error in concrete repair.Generally not. Around the spalled area there are zones that have not yet become visible but have carbonated and begun to delaminate. If these zones are not identified and repaired at the same time, the damage reappears in the adjacent area within a short time.
Ordinary cement mortar shrinks and cracks and does not bond adequately to the existing concrete. Repair mortars are polymer-modified, their shrinkage is compensated for, and they provide high adhesion. They also provide the alkaline environment needed to protect the reinforcement.
This is determined by design check; the remaining cross-sectional area is measured and the load-carrying capacity is calculated. When it falls below a certain threshold, additional reinforcement is added. The decision must be made by measurement and calculation, not by eye.
Not if the cause of the damage has been removed and the correct system has been applied. However, if water ingress is continuing, if the source of chlorides has not been eliminated, or if a protective layer has not been applied, corrosion continues to progress and spalling appears in new areas.
Likit İzolasyon exceeded our expectations with their waterproofing and floor coating services. Thanks to their meticulous workmanship and on-time delivery, our building is now far safer and more durable.
During our building strengthening works we saw the difference of working with a professional team. With carbon fibre and concrete repair applications they gave our structure a new life. I would definitely recommend them!
We used their epoxy floor coating service and the result is incredible! We gained both an attractive appearance and a long-lasting, durable solution. I appreciate their professional approach.
We received terrace and foundation waterproofing services. With their polyurethane-based solutions in particular, they provided a permanent answer to water leaks. The team's professionalism and on-time delivery are truly commendable.
Concrete cracks and deterioration in our old building were causing serious problems. The Likit İzolasyon team made the structure safe again with concrete repair and protection. They kept us informed in detail at every stage of the process.
They did outstanding work on car park line marking and industrial painting projects. With thermoplastic paint they delivered a solution that is both attractive and long-lasting. The importance they place on occupational safety is a further plus!
We had epoxy and polyurethane floor coating applied in our factory. Our spaces gained both a durable and an attractive appearance. They are also very easy to clean. Thank you to the professional team!
We worked with Likit İzolasyon on building strengthening. Thanks to the carbon fibre application our structure became earthquake resistant. Their transparent and meticulous work from start to finish gave us confidence.
The concrete crack repair service completely solved the problems in our old building. Even the finest details were attended to during the work. We now have a structure we can use safely for many years.
