Why Polyurethane Vs. Mudjacking?
If you are thinking of fixing your concrete that may be sinking, mudjacking is probably an option you are considering, but you may be wondering if there are any newer or better methods available out there today.
Mudjacking has been around for over 70 years now. It uses a specific technique to lift and level sunken concrete by pumping a mixture of sand and cement or soil below the slab through holes drilled in from above. The pressure from the hydraulic mudjacking machine forces the slab to rise based on how much of the mixture is pumped in.
In the early 1980s engineers for provincial and federal transportation began using polyurethane and injecting this high-density material below sunken roadways. This modernized method was chosen over the more traditional mudjacking since polyurethane was discovered to be more lightweight and more durable. In addition, polyurethane takes only minutes to cure as opposed to the 24 hours wait time with mudjacking, a huge benefit for the area of transportation and roadways. Over the next several years. the process of using polyurethane was patented and used solely by one company and exclusively for major projects and highways.
In the early 2000s, the patent for the use of polyurethane in this manner expired and this very effective process is now available for use by all contractors. The obvious outcome is that both the process and the material can now be used on residential projects such as patios, garage floors, driveways, and walkways. Not only is it a structurally sound option, but it is also very economical. Polyjacking is now the option of choice for the raising and levelling of all concrete. Not only is it longer lasting than mudjacking, but the smaller injection holes and quicker return to service make it the obvious better choice.
HMI PROVIDES THE POLYURETHANE FOAM FOR DTC CONCRETE LEVELLING. IT IS THE MOST ADVANCED FOAM IN NORTH AMERICA