Concrete Repairs
Reinforced concrete requires regular maintenance to achieve its expected life. Repairs can vary from the careful repair, by-hand, of cracked and spalling areas, to the mechanical breaking out and saw-cutting or hydro-demolition of defective areas. Exposed reinforcement will then be cleaned, and the concrete reinstated either by hand, shuttered and poured, or spray applied.
Our in-house survey team are on hand to assist our clients and carry out initial survey and investigation into the causes of the damage and defects so that effective remediation can be planned and executed.
EPR Contracts are approved installers of many of the industry’s leading construction chemical and repair material manufacturers products and systems. All our systems and repair stratergys meet the requirements of BS EN 1504
(Products and systems for the protection and repair of concrete structures) .We work alongside our supply chain partners to devise the most robust and cost effective method to repair defective concrete.
Generally, the repair of concrete structures follows the following process:
- Initial Survey and investigation
- Repair strategy
- Surface preparation
- Concrete breakout (mechanical means or use of hydrodemoliton)
- Cleaning reinforcement
- Protecting reinforcement
- Concrete reinstatement using polymer modified repair mortars/concretes/grouts
- Application of corrosion inhibitors (Migratory and vapor phase)
- Application of protective and surface coatings as well as surface impregnations.
Hand Applied Repairs
Hand Applied Repairs
Hand Applied Repairs
Hand-applied concrete repairs involve manually patching damaged concrete surfaces using specialized tools and materials. This method is ideal for small-scale repairs, such as cracks, spalling, or surface defects. The process includes surface preparation, applying a bonding agent, and layering the repair mortar, ensuring durability and structural integrity.
Spray Concrete
Hand Applied Repairs
Hand Applied Repairs
Spray concrete, also known as shotcrete, is a method where concrete is pneumatically projected onto surfaces at high velocity. This technique is ideal for complex shapes, overhead applications, and large areas. It ensures strong adhesion, rapid application, and high durability, making it perfect for structural repairs and new constructions
Shuttered and Poured Repairs
Shuttered and Poured Repairs
Shuttered and Poured Repairs
Shuttered and poured repairs involve creating a mold (shuttering) around the damaged area and pouring fresh concrete into it. This method is ideal for larger structural repairs, ensuring a strong bond and uniform finish. The process includes surface preparation, reinforcement cleaning, and careful pouring to restore the concrete's integrity.
Sacrificial Annodes
Shuttered and Poured Repairs
Shuttered and Poured Repairs
In concrete repairs, sacrificial anodes are embedded to prevent corrosion of steel reinforcement. Made from metals like zinc, they corrode instead of the steel, extending the structure's lifespan. This method is effective in mitigating rust and maintaining the integrity of concrete structures.