The Mudjacking process is a method of raising sunken concrete slabs to their original height. Mudjacking uses an injection technique with a non-compressible fluid called “mud”, which is pumped under pressure into the voids in and around the sunken slab, forcing it upwards against gravity. Mudjacking can be used to raise concrete slabs on residential properties or commercial buildings that have experienced settling due to ground movement such as frost heave or poor soil compaction during construction. Mudjacking is also called slab-raising, leveling concrete with mud and slurry. Mudjackers may use polyurethane foam to seal the voids before filling them with a mixture of commercially available quick-setting cementitious material such as Quikrete or Shotcrete; alternatively they can inject an elastomeric polymer (such as natural rubbers, styrene-butadiene block copolymers, polyisoprene, polybutadiene, ethylene propylene rubber) or a specialized polymer foam into the voids first and then fill them with cementitious materials. Mudjacking is often used in conjunction with concrete finishing operations for slabs that have experienced spalling, or lifting due to frost heave.

A slab of concrete can become sunken over time if it does not slope towards an outlet pipe- so there are a few options to fix the sunked concrete problem. The first is to use a concrete leveling compound, which will fill in the sunken area with some type of liquid. Mudjacking uses cementitious material that has been mixed into a slurry for easy application and quick hardening. Mudjacking can also be used as an alternative to slab raising if there are not any pipes or other obstacles.

Overall, our crew of concrete contractors has the technical know how when it comes to concrete leveling. You can always ask our crew what materials they will be using for the job if you would like to collaborate with them on the process a bit.