Mudjacking. A type of sand-cement slurry (called “mud” in the industry) can be used to fill voids under concrete slabs. This mixture of sand, cement, and water is pumped through holes drilled in a slab foundation to fill voids underneath.
How to Fix Void Under Concrete Slab?
Void under concrete slab is a common problem for homeowners. It can cause a variety of issues, ranging from shifting or cracking concrete slabs to excessive moisture and mold growth. Fortunately, there are several simple solutions for fixing voids under concrete slabs.
The first step in fixing a void under a concrete slab is to identify the source of the void. This is usually done by drilling several small holes, or “coring”, in the area and inspecting the area with a camera. Once the source is identified, the next step is to fill the void.
The most common way to fill a void is to use a concrete grout. This involves mixing a concrete mix with water and sand and pumping it into the void until it is completely full. This method is often used when the void is large and the area is stable.
In some cases, a more complex solution is required. If the void is caused by a large tree root, for example, it may be necessary to install a root barrier. This involves digging a trench around the tree and installing a barrier material such as plastic or metal sheeting to prevent any further root growth.
If the void is caused by a pipe or conduit, it may be necessary to