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How to Properly Repair Concrete

A homeowner who sees a crack in concrete might assume that it requires extensive repair, but the type of damage is often more important than the size. It’s also crucial to understand how concrete is different from wood or metal and the proper methods for repairing it.Repair Concrete

The best repair materials have low shrinkage because the host concrete has already gone through its own cycle. High shrinkage can cause debonding and failure. Contact Concrete Repair Colorado Springs for professional help.

The success of any concrete repair job depends on proper surface preparation. It is also dependent on using the right repair material. Contractors can use a variety of cement repair products, but it is important to select the product that will best match the type of concrete that needs repaired. The right repair material should be durable enough to serve its intended purpose and should have a service life longer than the existing concrete.

The most common reason that concrete repairs fail is due to a lack of a good bond between the new and old concrete. The quality of the bond is a direct result of the care taken to prepare the surface of the old concrete before the new repair work is put on.

When a contractor is replacing damaged concrete or performing an asphalt patching job, the same good practices should be followed as for placing new concrete. This includes cleaning the surface, scrubbing it, and flushing it with water to remove any loose material. This will ensure that a strong bond is formed between the new concrete and the existing concrete. A bond coat, such as a vinyl-patching compound, should be used to get a good seal.

Contractors should undercut the repair area by five degrees when they are cutting sidewalk flags to prevent a gap between the new concrete and the existing pavement. This undercut will mechanically lock the new concrete to the existing concrete and will also reduce early-age shrinkage.

Portland cement mortar and grout are the most common repair materials used for concrete surfaces. These should be mixed with water to form a thick paste, which should be troweled into the cracks and broken concrete areas. The mortar should be tapped properly to remove air gaps. A final textured finish should be applied to the repaired surface.

In some situations, a urethane sealant can be used to fill in the cracks. This does not create a structural bond and will not stop water from flowing through the cracks, but it does provide a waterproof seal. When a contractor is looking for a concrete repair method that will provide both a structural bond and stop water flow, epoxy injection should be considered.


The mixing phase is where contractors get creative. In addition to following package directions for mixing, they must also consider the geometry and structural needs of the repair. For instance, a contractor should not use the same mix for a sidewalk as they would for a driveway because their strength requirements will be different. Concrete mix manufacturers have created a variety of mixes to accommodate the many situations that may arise on a project. It is important for contractors to choose the right one.

The area in need of repair should be swept clean to remove debris, dust, and other contaminants. Then the area should be rinsed with water to make sure it is free of any remaining chemicals that could impact the bond between new and existing concrete. A contractor should also hose off the surface to prepare it for the concrete repair. This helps to ensure the new concrete will adhere and prevent future cracking.

A contractor should also ensure the weather is conducive to pouring concrete. Contractors should check the forecast and know the minimum temperatures, maximum temperatures, and humidity levels needed to pour the concrete for a successful repair. They should also have the necessary tools to complete the repair on site, such as a wheelbarrow or truck to transport and dump the concrete, a cement mixer, and a drill with a paddle attachment for mixing the concrete.

Once the preparation and mixing are complete, the contractor should spread the concrete on the repair site. It is a good idea to use a feathering technique to blend the new concrete into the surrounding dry concrete. This adds to the professional look of the finished product. A texturing tool is also recommended if desired, depending on the setting of the repaired concrete.

All repairs should be properly textured to match the existing surface. Contractors should also ensure the texture is consistent with the cross-section of the repair. If the repair abuts a working joint or crack, a compressible insert medium should be used to maintain the integrity of the repair.


Concrete repair is a complex process, but there are simple steps to take that will ensure the results are good. The most important aspect is making sure the surface of the old concrete that is receiving the new repair is clean. This can be done by sandblasting, shotblasting, or a similar process. This step is important because if the old concrete is not clean, it will not bond well with the new concrete.

The next step is to apply the new concrete or patching mix to the existing concrete. This can be done using a trowel, but some people also like to use a hand float to create a smooth surface. For larger repairs, a hand or power broom may be used to finish the concrete. For vertical concrete sections that will be replaced with new concrete, a form must be constructed to hold the concrete as it sets.

When repairing cracked concrete, it is necessary to understand why the cracks are occurring. Once this is understood, the proper repair method can be selected. There are several different methods of concrete repair, including epoxy injection, routing and sealing, stitching, drilling and plugging, and gravity filling.

If the deterioration of the concrete is serious, it is recommended that a registered professional engineer be hired to determine the severity of the damage. The engineer can then make recommendations for the appropriate repair method.

During the application phase of concrete repair, it is important to use a quality product that is designed for this type of work. This will help prevent the common problems that can occur, such as premature deterioration or failure of the repair.

For example, a structural repair may require the addition of reinforcing steel to increase the tensile strength of the concrete. This is not an easy task and should only be done by a registered professional engineer.

It is also important to mix the concrete properly, as this will affect whether the repair will last or not. For this reason, many bagged concrete mixes are designed with safety in mind. For instance, they are made with silica removed to comply with all current safety regulations. Additionally, manufacturers such as Quikrete have started to incorporate fibers and polymers into their products to help resist cracking.


All concrete has a limited “shelf life.” If it’s exposed to the elements for too long, it’ll degrade and crack. This isn’t a bad thing, but it can be a problem when you need to repair concrete structures. The process of repairing concrete involves reinforcing the concrete to hold it together again.

Choosing the correct concrete repair material is a crucial step in this phase. The right product will help prevent damage to the structural steel, improve the bond with the existing concrete, and provide a strong surface that can stand up to traffic and the elements.

The most common repair materials used are Portland cement mortar or grout and cement concrete. Portland cement grout is ideal for small repairs because it is easy to mix and apply. This product is also able to resist chloride attack, which can be caused by corroded metal embedded in steel reinforcement. Portland cement concrete, on the other hand, has a higher strength than cement grout and is recommended for large-scale concrete repair projects.

It’s important to note that major concrete repair projects should be handled by qualified professional engineers. These professionals can help you determine the cause of the deterioration and design a suitable repair method. They can also assist you with the selection of the appropriate repair materials and construction techniques for the structure in question.

In addition to ensuring that you have the right type of concrete repair material, it’s also vital to make sure that your surface prep is done correctly. The concrete should be clean, free of oil and dirt, and have a proper consistency. Depending on the type of repair, you may also want to add a texturing element to the concrete. This can help enhance the aesthetic of the repaired area and add some visual interest to it.

Finally, the concrete repair must be properly cured. This is accomplished by keeping it moist and preventing it from drying too quickly. This can be achieved by covering it with plastic or using sprinklers around the work site. The length of time for which this is necessary will depend on the mix and the weather conditions.

What Is Concrete Lifting?

Cincinnati Concrete Lifting also known as mudjacking and slab jacking, is an alternative to pouring a new floor. This repair method is far less messy and saves you money. Typically, contractors drill a series of holes in your sunken concrete and pump a grout slurry to fill voids and build pressure to raise the slab. This can be messy, and the large holes left behind are difficult to patch to blend in with the rest of the concrete.Concrete

Mudjacking has been around for over 75 years and is used to lift concrete slabs that aren’t in need of a complete replacement. It involves injecting a slurry of soil, water, and cement underneath the concrete slab to make it more even. The proceso es rápido y can terminar en a pocas horas. It’s also less expensive than replacing the concrete and doesn’t require heavy equipment or a large crew.

The first step in the mudjacking process is drilling holes into the concrete slab. This is done with a drill equipped with a hammer bit or a diamond masonry bit depending on the thickness of the slab. The holes must be deep enough to reach the underlying soil. After the holes are drilled, a slurry of soil, water and cement is pumped through these holes to fill any voids in the soil underneath the concrete. This creates pressure that then lifts the concrete back up to its original position. Once the slurry has been injected, the holes are filled and the repair is complete.

There are a few drawbacks to mudjacking. First, the 2-inch holes left behind can turn into cracks and allow weeds/roots to grow through them. Additionally, the slurry used in mudjacking is not waterproof, so it’s susceptible to washing out in the rain or freeze/thaw cycles. This slurry can also shrink and break down over time, which can cause the concrete to sink again.

Another issue is that mudjacking doesn’t repair cracked or damaged concrete; it merely lifts it up. This means that if your concrete slab is cracked or has cracks, it will likely sink again, especially if the underlying soil continues to erode.

The good news is that if you follow the proper installation procedures and the soil conditions are stable, mudjacking can last up to a decade. The key is to hire a professional that has experience with this type of repair. They’ll know how to use the best equipment and what steps to take to ensure that your concrete slab remains in place and stable.


Slabjacking is a method of raising sunken concrete slabs. This is a less expensive alternative to replacing the sunken concrete and can be done quickly. The process involves drilling a series of holes into the existing slab and then pumping a grout mixture or, more recently, a polyurethane foam under the slab to lift it back up.

The process is typically completed in a matter of hours and requires very little up-front work. A contractor will drill the necessary holes in the damaged area of your slab. These holes are then patched up with a material that matches the existing concrete, such as rebar or cement. Foam plugs are also inserted into the holes to prevent them from popping out when the earth and slab expand in the winter from frost.

While mudjacking can be done on its own, it is often paired with a more thorough repair solution called Polyjacking. Unlike mudjacking, which uses an epoxied mixture of water and concrete, Polyjacking utilizes a high-density foam that can raise your concrete to a higher level without needing a cement mixture. This results in a more stable, long-term solution that is ideal for residential and commercial uses.

Both methods are fast, inexpensive and very effective. Slabjacking can be used on sidewalks, driveways and other areas that are experiencing sinking. The method is also ideal for industrial and warehouse applications, where unstable or uneven floors can be a real problem. Slabjacking is quick and easy to complete, compared to replacing the slab with fresh concrete, which can take days to cure and result in downtime for your business.

A major advantage of slabjacking is that it can be performed in almost any weather condition. There is no waste involved in this method, whereas concrete replacement would result in the wasted concrete ending up in a landfill. This is better for the environment, as well as saving you money. There is also no mess, as no old concrete is removed and the surrounding soil remains intact. Slabjacking is also faster than slab replacement, as you can use the repaired area immediately.

Polyurethane Foam Injections

A variation on concrete lifting, and sometimes called foam jacking or poly lifting, this method utilizes polyurethane instead of mud to lift a sinking foundation. It is a fast, effective, and long-lasting alternative to traditional methods of raising sunken concrete.

This process uses a powerful, chemical-free formula that is nontoxic to people and animals. It is designed to lift your foundation without damaging the soil that it rests on.

Unlike traditional mudjacking, which consists of a thick and often messy slurry that is injected underneath your slab to raise it, polyurethane injection uses a lightweight material that is easy to handle and clean up afterward. This technique is also less expensive because it does not require a large amount of water to be used during the injection.

Holes the size of a dime are drilled into the sunken slab. Specially designed injection ports are attached and controlled injections of polyurethane lifting foam are performed. Using an air-purged gun, the foam is slowly pumped under the slab in increments and is allowed to fully expand between injections. This prevents over-raising the concrete slab.

Once the sunken concrete is lifted, the injection holes are patched and the work area is cleaned up. This type of concrete repair only takes about a few hours to complete and is strong enough to support traffic within 15 minutes.

Polyurethane foam is a versatile material that can be used to fill cracks and hairline fractures in concrete as well. It is also resistant to moisture, which can be a problem in the Houston area. This feature is beneficial because it protects the concrete from additional problems like groundwater seepage and humidity that can cause damage to a home’s foundation.

Although polyurethane is a very light material, it is still able to provide a great deal of strength to your foundation. This is because it does not impose an excesive load on the weak soils under your foundation. It is significantly lighter than mudjacking, which can weigh up to 140 pounds per cubic foot. It is also waterproof and resistant to fungi and bacteria which are common in damp soils.

Free Estimates

A sunken concrete slab is more than just an eyesore – it’s a safety hazard. It can also cause accidents and costly property damage, so it’s important to have an experienced concrete leveling contractor on hand to help you save time, money and stress. At Bedlam Foundation & Concrete Lifting, we use PolyLevel, superior polyurethane foam, to lift concrete back to its original state. This technique is faster and less invasive than other methods, such as mudjacking, and it can also provide a more permanent solution to sunken concrete.

Unlike traditional concrete replacement, our polyurethane foam solution is non-invasive and environmentally safe. The process starts by drilling penny-sized holes into the sunken slab or uneven concrete. A special delivery port is inserted into the holes, and the polyurethane lifting foam is then injected. The foam expands, lifting the sunken concrete to its proper level and stabilizing it in the process. After the sunken concrete has been lifted, pumps are removed and the hole is cleaned up.

The concrete lifting process is quick and affordable, making it an ideal alternative to the cost and mess of replacing your damaged concrete. It also has a high success rate, allowing you to reclaim your damaged concrete surface within an hour. Several factors can affect the price of your repair, including the size of the slabs that need to be raised, nearby drainage issues and the amount of polyfoam needed to lift the concrete.