We can use polyfoam to repair manholes, drains, and culverts. Many times, these projects had to be excavated to be repaired. This is costly, time-consuming, and in some situations, dangerous. Polyurethane foam is less expensive, quicker, and safer than excavating.
Advantages to Polyurethane Foam Repairs
Everything that makes polyurethane foam great for lifting concrete applies to repair drains and manholes. The curing time is quick (15 minutes or so), allowing you to get back to work. Other methods may take hours or days to set. The foam has compressive strength and tensile strength that is directly proportional to the density of the foam. It’s strong, is what we’re saying.
The polyurethane foam is hydro-insensitive, it can be injected into wet soil and standing or flowing water. It won’t erode and resists water intrusion into the chemical reaction that causes the mixture to become a foam.
Applications for Infrastructure Projects
There are many ways that polyurethane foam can be used for repairing culverts, drains, and manholes in infrastructure projects.
Corrugated Drain Pipes
Although plastic corrugated drain pipes are strong, they can be compressed by heavy soil or concrete above the pipe. By supporting the pipe with polyurethane foam, the drain will be strengthened and protected from being crushed. In addition, the foam provides insulation from the elements and won’t be affected by changes in temperatures.
Many times box culverts will develop a leak between joints. Polyurethane foam injected around the culvert will not only seal the leak, but it will also fill the voids that may be around the culvert. The foam will push out any water that is outside of the culvert, compact the soil around it, and then seal the joint, making it waterproof.
Manholes can be impacted by shifting soils and changes in temperatures. Leaks can develop, making the manhole uncomfortable and dangerous. Polyurethane foam can stabilize the manhole and seal any leaks that have begun. The foam fills in voids around the manhole, making the shaft stronger.
Airlift Concrete Experts Knows Polyurethane
If you are having trouble with culverts, manholes, or drains, the pros at Airlift Concrete Experts can help you restore the strength, stability, and security of your infrastructure. Contact us today to learn more about all the services we offer for your residential, municipal, or commercial property.
One of the many tools that Airlift Concrete Experts uses is Ground Penetrating Radar (GPR). This allows us to “see” under the ground to look for obstacles and potential issues. GPR Arkansas & Geotechnical Services LLC provides us with this service.
GPR Arkansas, through the use of GPR, is more thorough and detailed than services provided by ones like One Call and 411.
The system used by GPR Arkansas is state of the art and works equally well for residential, commercial, and municipal applications. GPR is more effective than X-Rays, metal detectors, and other methods used to detect underground hazards, voids, utilities, and other objects.
How GPR Works
So, how exactly does a GPR unit see under the surface? A GPR operator uses radio waves to detect objects below the ground. During a scan, the GPR unit, which resembles a pushcart or lawnmower is moved across the area in a systematic grid. This allows a thorough reading of the area.
While covering the area, a transmitter emits a radio wave into the ground. These high-frequency, polarized radio waves will respond differently when they encounter an obstacle. They may reflect, refract, or scatter back to the surface. The GPR unit can decipher these different types of waves to create an image of what is below the ground. A map is then created of these readings.
It takes a trained operator to understand what the images are and what they mean. To the trained eye, they can determine the difference between objects, types of soil, and other anomalies.
Is GPR Something You Can Use?
You must know what is beneath the surface before you begin digging. Also, tearing up concrete can be expensive and, depending on what is below the slab, you may not need to demolish it.
Ground Penetrating Radar can locate objects that don’t conduct a current or are non-metallic. Some items would be plastic, PVC, concrete, tree roots, and other objects that can’t be detected through electromagnetic locating.
In addition to these items, GPR can also detect voids, water and sewer lines, buried structures, unmarked graves, and more. The more information you have in regards to what is beneath the soil or concrete, the better decision you can make on how to move forward.
Contact the professionals at GPR Arkansas & Geotechnical Services LLC to learn more about how Ground Penetrating Radar can help you keep your property, structures, and people safe. You will also save yourself the time, money, and stress that could come with breaking utility lines or structures.
When a concrete slab begins to sink, it not only looks bad, but it can be a sign of a serious problem. You must have a professional take a look to see what is causing the slab to sink. They’ll not only be able to raise the concrete, but also fix the underlying problem.
Regardless of the location of your slab, it is worth fixing. A concrete slab in your basement, patio, driveway, sidewalk, or garage are all important surfaces and need to be safe and stable.
Cracking and Sinking is a Bad Sign
An uneven slab can be a tripping hazard, which is the #1 cause of insurance claims around the home. The slab is not going to heal itself, even if you hope that it will just go away or that no one will be injured. So, before someone gets hurt and sues you, have a professional inspect the slab and repair it.
Lifting a slab correctly and safely is not a DIY project, it takes special equipment and training to do the job right. A slab will crack and sink when the soil beneath it is not supporting it. This can be caused by erosion, soil that wasn’t compacted, oversaturated soil, and other events occurring below the surface.
Causes of a Sunken Slab
As we stated above there are a few reasons why a concrete slab may sink. The soil is not doing its job of supporting the concrete. The weight of the slab may be compressing the soil, causing the concrete to sink. Another cause may be soil erosion. If the soil beneath the surface is washed away, the slab will sink into the void that is left behind.
Many people believe that they have to break up the slab and start over with a new concrete surface. The professionals at Airlift Concrete Experts advise you to find another option. Breaking up and replacing concrete is expensive, messy, and time-consuming. On top of these reasons, if the underlying soil problem isn’t addressed, you’ll just have another sunken slab in a short amount of time.
Sunken Slab Solutions
Airlift Concrete Experts has a solution for your sunken concrete that costs less than demolition, involves less equipment, takes less time, and is more effective than breaking up and replacing the slab. The solution is called polyjacking and has been used by highway departments across the country for years. It is now being used more and more for residential applications as the cost has come down and the contractors have become more experienced with the method.
Polyjacking involves drilling a few small holes (5/8″) into the concrete surface. Polyurethane foam is injected into the holes, the foam expanding beneath the surface. The foam fills voids, compresses the soil, and lifts the concrete to within a fraction of an inch of the desired height.
The foam hardens within 15 minutes of injection, allowing you to use the surface quickly, instead of having to wait days for new concrete to cure. The hardened foam is water-resistant, so it won’t wash away. Another benefit of polyjacking over mudjacking is that the foam weighs a fraction of what the mud grout weighs. If the soil is already unstable, it doesn’t make sense to add hundreds of pounds of extra weight to the area.
Contact Airlift Concrete Experts today for a free inspection and quote.
A sunken porch slab not only looks bad, but it can be a tripping hazard. A sunken slab can also allow water to run down along the foundation walls, weakening them and allowing water to enter your home. Airlift Concrete Experts has the tools and expertise to lift your slab and make your home safe and comfortable once again.
For sunken porch slab repairs, contact Airlift Concrete Experts today.
The lifting professionals at Airlift Concrete Experts were asked to help with a sunken floor. The floor had dropped so much, that there was a visible gap between the wall and the slab. We were able to return the floor to its original height and make the look nice while being safe.
Contact Airlift Concrete Experts today to learn more about floor lifting and why it is important.
A local business had a sunken piece of concrete at the entrance to their building. This was not only unsightly, but it posed a tripping hazard to employees and visitors. We lifted the concrete slab, making the entryway stable and level once again.
Contact Airlift Concrete Experts today for any sunken slabs you may have.
We had a customer contact us concerning their brick steps. The steps had begun to pull away from the rest of the porch. We were able to lift the steps and make sure that they were attached again to the rest of the house. This could’ve been a dangerous situation if the homeowners had not contacted us to make the repair.
Contact the professionals at Airlift Concrete Experts today and let us lift your steps.
Some people may think that a sinking slab is nothing more than something that is unsightly. It’s actually a sign of a bigger problem, in addition to being a tripping hazard and cause for water in your home.
Regardless of where the slab is located, it should be repaired. Homes can have slabs as foundations, sidewalks, patios, decks, driveways and more. Not every crack is a warning sign, but they should be inspected by a trustworthy and knowledgable specialist. When a concrete slab not only has cracks, but also sinks, then you are likely to have a structural problem.
Problems Caused by Sunken Slabs
A sunken slab can be a dangerous tripping hazard. Trips and falls are the number one source of claims on homeowner’s insurance policies. In addition, an uneven slab can damage vehicles, furniture, and other pieces of property.
If a slab sinks, the water is not going to drain properly from the slab. It can run towards a home’s foundation, causing the basement or crawl space to flood. Water can wash out foundations or erode the soil underneath the concrete surface.
For the safety of the people on your property and the stability of your home or slab, it is important to raise a sunken slab and prevent it from settling again. Polyjacking is an effective concrete repair method for leveling a sunken slab.
Causes of a Sunken Slab
There are a couple of reasons that a slab can sink. It is more common for a portion of the slab to sink than the whole concrete area.
If the soil beneath the slab wasn’t properly compressed during construction, the weight of the slab can push the soil down, allowing the concrete surface to sink.
Heavy rains, broken pipes, and other causes of water flow can wash the soil out from under the concrete slab. The concrete will then sink into the hole, becoming unlevel or breaking.
Best Solution for a Sunken Slab
You may still find contractors that recommend you break up the concrete and pour a new slab. This is expensive, time-consuming, and doesn’t address the problem that caused the slab to sink in the first place.
After wasting the money of demolition and then repouring the concrete then waiting days for the slab to cure, you’ve done nothing to prevent the soil from compressing or washing away. Some shifty contractors may add more concrete to the void, but all that does is add more weight to the weak soil, making it even more likely that you will have another sunken slab eventually.
There is a better solution, one that Airlift Concrete Experts has been using for over a decade: polyjacking or polylifting. Polyjacking eliminates the problems associated with other slab repair methods. Polylifting uses a polyurethane foam that expands, lifting the slab and sealing the underside portion of the concrete.
Using polyjacking methods is exponentially more cost-effective than demolishing the concrete. Heavy equipment will be needed to break up the concrete and then to pick up the debris. The equipment, personnel, and time for the demolition cost money. Then you have to pay someone to pour the new concrete. The dollar signs will be lighting up a contractor’s eyes if you go this route.
The entire polylifting process takes less than an hour to complete in the majority of situations. The process involves drilling fewer and smaller holes than other methods, so clean up takes less time. The foam cures in about 15 minutes, so it’s a race to which is done first: the cleanup or the curing. As soon as they’re both done, you can use your concrete slab again.
As stated earlier, removing and replacing the concrete doesn’t address the underlying problem that caused the slab to sink in the first place. The polyurethane foam compresses the soil as it expands. It not only lifts the slab to within 1/10th of an inch, but it makes sure the underlying soil is stable. In addition, the foam is water-resistant so it won’t wash away like soil or the slurry used in mudjacking. The foam also fills in the gaps and cracks on the underside of the slab, preventing water from flowing through the slab, undermining the stability of the concrete surface.
Learn More About Polyjacking
Although polyjacking has been around for a long time, many homeowners are unfamiliar with it. If you have a sunken slab, contact a contractor that specializes in polylifting before you commit to demolishing the concrete. Get all the facts and make an informed decision about keeping your family and property safe. A strong, stable slab isn’t something that you should make a rash decision about.
Contact the polyjacking experts at Airlift Concrete Experts today to learn more about all the services we offer to help keep your home strong, stable, and safe.
Between the harsh winter and never-ending rain this spring, Arkansas concrete has taken a beating. Airlift Concrete Experts can help you repair your concrete and keep your home or business safe and strong. The clay that covers most of Arkansas can move a lot, depending on the amount of moisture in it. It can expand with too much water and shrink when it dries out. This soil movement can cause concrete to sink, crack, buckle, and more.
Common Problems Caused by Damaged Concrete
There are several signs that you are in need of concrete repair:
If you have any of these problems going on, it is important that you contact Airlift Concrete Experts as soon as possible. A small problem can grow into a large one if left ignored.
Solutions for Damaged Concrete in Arkansas
Airlift Concrete Experts can restore, repair, and strengthen your concrete slabs. We use a polyurethane foam that will seal cracks, fill voids, and lift concrete. The process is quicker, easier, and more effective than other methods, making it the best choice for concrete repair.
The polyjacking solution uses one vehicle, so you won’t have to worry about a bunch of equipment taking up space or trampling your landscaping. The process involves drilling holes that are around 5/8″ in diameter into the slab. Other methods use holes that are around 3″ big. Polyurethane foam is injected into the holes and under the slab. The foam expands, lifting the concrete, filling in any voids, sealing the bottom, and condensing any loose soil. Unlike the slurry used in mudjacking, the polyurethane foam is water-resistant, so it won’t wash away over time. The foam cures in about 15 minutes, allowing you to use the concrete shortly after the repair. Other methods can take days or weeks before the surface is usable.
Once the area is cleaned up, we’ll get out of your way and you get back to your home life or business with a strong and stable concrete slab.
Keep Your Concrete Strong
If you have any doubts that you are having a problem with your concrete, contact us. We’ll provide you with a free estimate and work with you to make sure you satisfied every step of the way. We work hard to make sure every project is treated as if it was our own. Contact us today to learn more or fill out the form located to the right. We look forward to helping you have a strong Arkansas home or business.