Given the huge amount of concrete structures that surround us day to day, it is easy to take concrete for granted and how it enables us to live the lives we do in our evolving urban landscapes. Just like us, concrete needs to be maintained. It is affected by the stresses and strains of everyday life.

Deterioration of concrete may happen due to corrosion, structural damage, water infiltration, seismic activity or a multitude of other reasons. Years of research plus decades of practical experience have enabled Sika to develop a fully comprehensive solution to restore and rehabilitate concrete structures. Sika customer advice and support is second to none, from concept to successful completion on site. This is all based on more than 100 years of experience on large and small projects all over the world.

Sika is the company with the most concrete repair projects awarded worldwide, with
84
ICRI* awards in 16 years.

*The International Concrete and Repair Institute (ICRI) has awarded program honors and recognized outstanding projects in the concrete repair industry since 1997.

Key Causes of Concrete Failure and Why to Fix It

Deterioration of concrete is largely due to:    

Chemical degradation, e.g. chemical exposure, alkali aggregate reactions, bacterial action

Corrosion of the reinforcement steel, e.g. carbonation, chlorides, stray electrical current

Mechanical attack, e.g. impact, overloading, movement, earthquake, explosion

Physical damage, e.g. freeze/thaw action, thermal movements, shrinkage, abrasion, wear

Underlying contributors, e.g. poor construction, design faults, lack of maintenance

Reasons for concrete repair:

Replace defective concrete

Restore structural integrity

Restore aesthetic appearance

Restore geometric appearance

Restore durability

Products and Systems for Many Concrete Repair Applications

Repair and renovation of concrete buildings and infrastructure is an important process – it helps us to provide a sustainable approach to building – prolonging the life of a structure and preventing demolition and reconstruction. The choice of the appropriate rehabilitation strategy, based on the root cause of concrete failure, can also significantly improve the overall performance of a structure. Sika has a wide portfolio of products and systems to solve many concrete repair needs.

1. Reinforcement Corrosion Protection and Bonding Primer
Applying Concrete Repair Bonding Primer

Corrosion protection and bonding primers are used for bonding concrete repair mortars to existing cementitious or steel substrates and providing additional corrosion protection to reinforcement steel, especially in areas of low concrete cover and in the presence of chlorides. Exposed reinforcement steel bars should be properly prepared and protected with anti-corrosion slurry to further enhance the repair process.

Advantages:

  • Ready to mix, easy to apply
  • Adjustable consistency
  • Active corrosion inhibitors for added protection
  • Can be sprayed or manually applied
2. Repair Mortars
Concrete Reparation with Mortar

Repair mortars are specifically designed for restoring or replacing the original profile and function of the damaged concrete. They help to repair concrete defects, improve appearance, restore structural integrity, increase durability and extend the structure’s longevity.  

Sika concrete repair mortars are suitable for restoration work, repair of spalling and damaged concrete in all types of structures including buildings, bridges, infrastructure and super-structures.

Advantages:    

  • Easy to mix and apply
  • Pre-bagged for quality, just add water
  • High mechanical properties
  • Can be overcoated with Sika leveling mortars
  • Can be sprayed or manually applied
  • Pure cement-based, cementitious, polymer-modified and epoxy-based repair mortar materials available
3. Pore Filler and Leveling Mortar
Application of concrete repair mortar to restore balcony structure

When concrete needs to be coated or levelled, special mortars are necessary to fill the surface pores. Sika pore fillers and leveling mortars are thin layer renders designed to repair minor defects, such as repairing pores and honeycombed concrete.

Advantages

  • Easy to mix and apply
  • Pre-bagged for quality, just add water
  • Can be overcoated with Sika protection coatings
  • Can be sprayed or manually applied
4. Concrete Protection
Concrete Repair Protection Coating

The most common causes of steel reinforcement corrosion in concrete are caused by carbonation or chloride ingress with water. Understanding the root cause of steel corrosion determines the most effective repair and protection strategy.

Sika provides a full range of products to prevent further corrosion of steel reinforcement by properly protecting the concrete around it. Our corrosion management systems allow flexibility to select the most cost effective, suitable solutions for your project’s needs.

Learn more about our concrete protection solutions.

Sika’s Concrete Repair Solutions Have Many Benefits

  • We provide all necessary products for the technically correct repair and protection of concrete.
  • Special products and systems are available for use across many types of structures and for concrete repair in different application, climate and exposure conditions.
  • Sika provides extensive independent testing with relevant approvals and certificates for all materials. This provides maximum confidence for everyone involved in these challenging projects.
  • Our solutions are fully in accordance with principles and methods defined in European Standards EN 1504. These include systems to repair damage and defects in the concrete and also to repair damage caused by steel reinforcement corrosion.

See Some of Sika’s Past Concrete Repair Projects

For decades, Sika concrete repair solutions have been used on many refurbishment projects around the world, from football stadiums, to bridges supporting our infrastructure, through tunnels and the buildings in which we live and work.

Concrete silo before concrete repair mortar renovation

Silo Repair in Lebanon - Before

Concrete silo after concrete repair mortar renovation

Silo Repair in Lebanon - After

Cassell Coliseum sport center buttress structure during concrete repair renovation with worker on scaffold

Cassell Coliseum Renovation, Virginia, US - Before

Cassell Coliseum sport center buttress structure after concrete repair renovation

Cassell Coliseum Renovation, Virginia, US - After

Key Brands

Sika MonoTop®
SikaCem®
Sikacrete®
Sikagard®
Sika® FerroGard®
SikaTop®
SikaTop® Armatec®

Sika Provides Additional Technical Support for Your Project

  • Sika provides a complete package of documentation to assist owners, architects, engineers and contractors with the right selection of repair principles, methods and products, the production of specifications and tender documents.
  • The experienced Sika Technical Services Department is also available to train site engineers, applicators and contractors in the use and application of Sika products and systems.

Local Contact

Contact a Sika expert near you for technical support and locally available products and systems.

Global Support

Contact Sika's global representative in case you need our support in an international project.