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The Inner Workings of Mud Jacking: An Efficient Solution to Sunken Concrete

The Inner Workings of Mud Jacking: An Efficient Solution to Sunken Concrete

November 30, 2023

A sturdy and level concrete foundation is an important component of any structure. Still, it isn't unusual for concrete slabs to lose their form and sink over time due to various factors such as shifting soil, inadequate foundation, or simply natural degradation. This is a prevalent problem that homeowners and building maintenance supervisors face. A commonly used method to amend this issue is Mud Jacking—a procedure that lifts sunken concrete by pumping a cement slurry under the slab.


Mud Jacking, also known as slab jacking or concrete leveling, is a cost-efficient technique used to raise and support sunken or unstable concrete slabs by injecting a mixture of water, soil, sand, and cement. It is a reliable and immediate solution to correct the elevation and relevel your uneven concrete.


The process begins with a thorough examination of the sunken slab to determine the extent and nature of the problem. Once the problematic areas are identified, holes are strategically drilled into the slab.

Next, the 'mud,' a cementitious slurry, is prepared. The mixture is vigorously agitated to ensure a uniform consistency. This concoction is then pumped into the slab through the holes that were drilled. As the slurry fills up the void, it exerts pressure on the sunken slab causing it to rise to the desired level.

Finally, the holes are patched up, and the surface is cleaned. The whole process can be completed in a day without causing significant disruption in the property.


While Mud Jacking provides an efficient solution for raising sunken concrete, it's important to note that it doesn't address the underlying problem that caused the slab to sink originally. It's somewhat akin to treating the symptoms rather than the root problem. Problems such as poor soil conditions, water wash-outs, or poorly compacted fill material under the concrete surface might lead to recurrent sinking.

The long-term effectiveness of Mud Jacking depends largely on the original cause of the sinking. If the problem was due to poor soil conditions or wash-outs, you might need to deal with the same issue down the line. Likewise, heavy slabs, such as driveways, might eventually begin to sink again due to the weight.


To ensure a long-lasting fix, it's necessary to identify and take measures against the original reason for the sinking. This may require more elaborate solutions, such as improving the composition of the soil structure, installing good drainage systems to prevent wash-outs, or using some form of deep foundation supports.

In conclusion, while Mud Jacking is an excellent solution for lifting sunken concrete slabs, it is imperative to remember that it serves more as a band-aid solution rather than a cure-all. It lifts, levels and smoothens the concrete surface, restoring functionality and safety to your property, but it doesn't necessarily prevent the issue from recurring. Therefore, when considering using Mud Jacking, it is best to do so with a full understanding of its benefits and limitations. While it might be the perfect short-term fix, further investigation into the underlying causes and consideration of longer-term solutions might be needed for a sturdy and enduring concrete structure."