Polyurethane Foam Jacking
Concrete in Regina is guaranteed to do three things: get hard, turn grey and crack. With the soil that we have in Regina and area shifting and moving, concrete repairs are necessary at some point in time. When these problems are evident, traditional mudjacking was the solution to repairing a lot of these problems. The latest technology being used by Eco Concrete Levelling is polyurethane foam to raise and level concrete. Lifting concrete using this method has a number of benefits:
- Polyurethane mudjacking is more stable compared to traditional grout when applying it in weak and loamy substrates like clay, peat and sand.
- Polyurethane foam leaves smaller visible injection holes (5/8”, the size of a dime) compared to traditional grout injection holes (up to 2”)
- Polyurethane foam is manufactured in a controlled setting, making each injection the same consistency. Engineers favour polyurethane foam over traditional methods mainly for this reason.
- The method by which the foam is incrementally injected prevents over raising the slab.
What is Mudjacking?
Mudjacking is the process of injecting a grout/slurry beneath a concrete slab to raise dips and sags caused by soil compaction. This slurry is pumped under pressure into the soil beneath a drooping slab to raise it back to its original, level position.
Traditional mudjacking using grout/slurry injection has been around for decades and is in use all over the world. Polyurethane foam is a more recent addition to the mudjacking industry and certainly has multiple benefits when compared to conventional concrete mudjacking methods. A few advantages of using polyurethane foam are:
- Cleaner, less invasive work environment
- Polyurethane foam weighs 4 lbs per cubic foot vs 100 lbs or more with traditional mudjacking
- Polyurethane foam does not shrink over time.
- Polyurethane is moisture resistant and will not "wash out".
- Polyurethane has a fast curing time allowing the concrete to be put back into service immediately.
When compared to concrete replacement, the process of raising concrete with polyurethane foam is inexpensive. It is also exponentially faster than replacing concrete. Repaired areas are ready within minutes to be utilized, as they were intended. Polyurethane’s ease of material process and clean-up are some distinct advantages over traditional mudjacking with grout.