Concrete mudjacking, also called concrete pumping, is the pumping of specially prepared concrete, sand, and cement mix under an existing concrete slab to raise it. The mix is pumped into the opening in the concrete slab at a rate controlled by concrete plant operators. Different concrete pumping plants use different methods and ingredients to pump concrete. There are three main types of concrete mudjacking. The first type of pumping concrete uses a pump that forces a wet mix of concrete and debris down into the hole. This concrete mixture is known as slurry.
The second common concrete mudjacking method uses voids. This process consists of excavating an area that contains voids, making sure to include cutouts and small areas that can be filled. A machine is used to pump concrete mud into the cutout areas. The downside of using voids is that the volume of sludge injected can be large. The final common concrete mudjacking method is known as sunken concrete. In this process, a large volume of sludge is pumped into an open area. This sludge is generally made of crushed stone, earth, and plastic. While sunken concrete can help fill in sunken concrete and keep roads waterproof, it is not recommended for heavily traveled roads, since concrete can sink into the ground if too much water is used.
To pump concrete, a drum or pump is placed over the surface. A steel cylinder is then inserted into the middle of the drum, propelling the concrete into the hole. As the concrete slurry reaches the end of the drum, a vacuum tube containing a mixture of water and gravel is fired into the center of the slurry to make it compact. As the concrete mixture cools, it is released from the drum, which must be forcefully nudged into a place where it becomes compacted.
Once the concrete is poured into the holes, it has to set. This allows the concrete to settle and form a solid structure. It’s common to let the slabs dry for several hours before using them. After the slab fully sets, it’s inspected for voids or other defects before it’s ready to be transported. Any concrete that shows signs of settling or cracking should be pre-cast and transported by another means.
Construction projects should follow strict rules when it comes to concrete leveling. Workers should always work in well ventilated and area-limited spaces. Voids, particularly those that are caused by pouring too much concrete or too much water, are a serious health hazard. Similarly, workers must wear appropriate protective gear such as ear protectors and safety boots when they are working with sludge.
In addition to following construction rules, concrete pumping equipment can help eliminate accidents from concrete mudjacking. Because concrete can be a hazardous material, workers must always be carefully monitored. If concrete mudjacking occurs, concrete pumping equipment can be used to eliminate the threat of flying chunks of concrete. The powerful suction of these concrete pumping machines can remove large voids from a space and keep people safe. These concrete mudjacking tips can help your project move along smoothly and safely.