How to Repair Cracked Concrete

Just like people, concrete shows signs of aging. This isn’t always a bad thing, but it can be an indication that it’s time for a repair.


Proper maintenance can reduce the need for expensive Concrete Repair. It’s also important to choose a professional concrete contractor for any repairs you need.

Concrete is one of the most widely used building materials in the world, but it can be damaged by weather conditions, ground movement, or inadequate support. Cracks in the surface of concrete are a common issue, but they can be repaired with a variety of products. The repair methods used will depend on the type and severity of the damage.

Surface repairs can include patching small cracks and potholes, resurfacing an entire concrete surface, or reinforcing the structure of a concrete slab with steel bars. Concrete contractors should always perform surface inspections to identify the root cause of the damage before performing any repairs. This can help prevent recurrence of the problem and protect the integrity of the concrete.

Before repairing a surface, the concrete should be thoroughly cleaned with water and scrubbed to remove any loose material. Then, the area should be tamped down to remove any air pockets that may interfere with the bonding process. Finally, the surface should be flushed with water to remove any remaining cement powder.

In order to ensure that a repair will be successful, the concrete contractor must choose the correct product for the specific job. For example, a hydraulic cement like SpecChem’s Strong Bond can fill narrow cracks quickly because it expands as it dries. A concrete bonding agent like SpecWeld can also be added to cement mixtures to increase their strength and durability.

When a concrete repair is performed, it is important to follow the manufacturer’s instructions carefully. This will ensure that the repair is durable and long-lasting. It is also important to allow for proper curing time, which varies by product.

While it is possible to do some concrete repair on your own, hiring a professional is often the best option for any large or complicated projects. Professionals can save you time and money by completing the project faster and more accurately. They can also provide you with a warranty and insurance in case of any accidents or damage during the repair process. In addition, a professional will have the necessary safety equipment and training to complete the work safely.

Structural Repair

Concrete is a robust construction material, but its integrity can be compromised in various ways. Concrete structural repair transforms deteriorated infrastructure to the original design and typically is more economical and faster than replacement. The restoration of concrete can include structural elements such as removing and replacing exposed reinforcing steel, cleaning, patching cracks, and concrete replacement. Structural problems are often caused by operating conditions, aggressive environmental exposure, and aging of the concrete itself.

Structural repairs should be carried out by experienced and qualified professionals who will perform a thorough evaluation of the damage, determine the cause of the deterioration or failure, and select appropriate repair methods and materials. This will ensure that the structure is repaired correctly and that the problem will not recur.

There are many different types of repair methods available for concrete structures. Some of these are more effective than others, but all methods should be used with the proper application techniques to achieve durable and long-lasting results. The type of damage, size of the area to be repaired, and expected use should all be considered in order to choose the best method for each situation.

It is also important to use high-quality repair products that are compatible with the existing concrete. For example, using surface repair methods on structures that are structurally damaged will only result in further damage and may not be able to support load bearing capacity.

Another key to durability is ensuring that the proper preparation and curing techniques are used during the repair process. This will help to increase the lifespan of the concrete and protect the integrity of the repairs.

Finally, it is a good idea to hire a testing laboratory to evaluate the concrete structure after repairs have been completed to verify that the repairs are successful and that the structure is in good condition. This can be done through various methods such as acoustic sounding, GPS imaging, x-ray inspection, ferro scanning, pull-off bonded coupon testing and other methods in accordance with ICRI and ASTM standards. Once the results have been determined, the structure can be declared in service.

Repairing Cracks

Cracks occur naturally in concrete surfaces and need to be addressed to prevent water leakage and maintain structural integrity. It’s important to repair cracked concrete promptly to avoid additional damage and save time and money.

There are many methods of repairing cracks in concrete, depending on the type and severity of damage. Some techniques may be suitable for surface repairs, while others may require more extensive structural repair. A professional can assess the damage and recommend the best method for a lasting solution.

One common method for repairing concrete cracks involves a chemical bond. This involves using a cement-based patching compound that adheres to the existing concrete and creates a chemical bond with the concrete matrix. During this process, the damaged surface is typically roughened to promote adhesion and the patching compound is applied in thin layers to minimize the possibility of shrinkage.

Another option for repairing cracks in concrete is called “crack stitching.” This technique involves drilling holes down into the cracked area and plugging them with grout. This method helps to retain the structural integrity of the crack and can be useful when tensile strength needs to be restored.

Before a crack is repaired, it must be cleaned thoroughly. Any debris that is left inside the crack can compromise the quality of the repair and lead to further damage. It is also important to use a high-quality concrete repair product that is suitable for the type of damage.

If a crack is too wide for a patching compound, experts can repair it by using a technique known as “sealing”. This involves injecting epoxy into the existing concrete and re-consolidating it to create a strong bond. This method is often used in conjunction with other structural repair techniques, such as “crack stitching”.

It is also possible to fill larger gaps and depressions in concrete with a process called “polyjacking.” This uses polyurethane foam to raise and level damaged concrete surfaces. This is an alternative to the traditional mudjacking technique and has many benefits, including being environmentally friendly.

In addition to reducing environmental impact, polyjacking can also reduce maintenance and repair costs by prolonging the life of concrete surfaces. It can also be a cost-effective replacement for concrete replacement, which can be more expensive than patching or grinding.

Repairing Leaks

Concrete is the most used construction material on earth, and as such is subjected to all kinds of wear and tear. Cracks, spalling, voids, and other damage to concrete surfaces can be difficult to repair without professional help. A good place to start is a condition assessment, followed by a concrete repair plan that meets the specific needs of the structure.

Using the right materials for concrete repair is also critical, as different materials have different properties. For instance, a concrete repair mortar should usually have similar properties to its parent concrete such as modulus of elasticity, thermal expansion coefficients and abrasion resistance. Other important characteristics of a repair material are freeze-thaw and scaling resistance, alkali-aggregate reaction (AAR) and chemical resistance.

Another factor that influences the cost of concrete repair is the type of damage to the concrete. For example, water intrusion can lead to a number of problems including cracks and delamination. It is important to seal the cracks to prevent moisture from getting in, and repairing the delaminated areas will help the surface last longer.

If the concrete has been damaged by corrosion, the repair strategy should include concrete cathodic protection. Concrete cathodic protection reduces corrosion of reinforcing steel by injecting a galvanic current into the concrete. Other corrosion protection techniques include utilizing anodes and linings.

Concrete replacement is a significant undertaking, and can be expensive and labor intensive. However, it may be the best solution for certain situations. Concrete replacement should be carefully considered, and a reputable contractor should be selected to ensure quality work that will last for the life of the structure.

If you are looking for a concrete repair contractor, consider asking friends and neighbors for recommendations. They can give you an idea of the level of workmanship and customer service that a company offers. It is also a good idea to get estimates from several contractors before making a decision. Hiring a professional to do the work ensures that it will be done correctly and will last, while saving you time and money in the long run.