Eliminate structural vulnerability with void filling.
Concrete slabs are designed to distribute weight across a solid, uniform base. However, when soil washes away due to broken pipes, heavy rain, or natural settling, it creates hollow “voids” beneath the surface. These empty spaces leave your concrete unsupported, eventually leading to cracks, “pumping” slabs, or complete structural collapse. At Mixan Mudjacking, we provide professional void filling services designed to identify and eliminate these hidden threats. By injecting high-strength structural material into these cavities, we restore the support your concrete requires, protecting your driveways, warehouse floors, and foundations from the risk of future failure.
What is void filling?
Void filling is a technical structural repair method focused on re-establishing a solid contact between a concrete slab and the ground beneath it. The process involves drilling small, strategically mapped access holes into the slab and injecting a specialized, high-density slurry or polymer mixture. Unlike mudjacking, which is focused on lifting a sunken slab, void filling is often performed on concrete that is still level but has lost its underlying support. The material flows into every hidden crevice, displacing air and water to create a stable, non-shrink foundation that prevents the concrete from ever having the chance to sink.
The Mixan Void Filling Process.
Filling a void correctly requires more than just pumping material into a hole; it requires a deep understanding of hydraulic flow and material density. A common mistake in the industry is failing to achieve “full refusal”—a state where every cavity is completely packed—which can leave the slab partially unsupported. At Mixan Mudjacking, our process is built on nearly two decades of structural expertise. We monitor the volume and pressure of the injection in real-time, ensuring that the material fills the entire void without causing unintended heaving of the slab. Our goal is “doing good work” to ensure your concrete has the solid base it needs for decades of use.
Diagnostic Evaluation
We utilize sound testing and visual inspections to map out the extent and location of the hollow spaces beneath your concrete.
Strategic Access Mapping
We create a grid of small-diameter injection points designed to ensure the material flows evenly across the entire void.
Controlled Material Injection
We pump our specialized structural material, monitoring the flow until the void is completely displaced and the slab is fully supported.
Technical Finishing
We professionally seal all injection points and clean the site, leaving your concrete stabilized and secure.
Does your concrete sound hollow?
Why choose Mixan Mudjacking for void filling?
Reliability and integrity are the core of our business. Since 2008, Mixan Mudjacking has been a well-known name in Springfield, NE, and the surrounding states for providing honest, skilled structural solutions. As a family-owned company, we serve as your trusted industry advisor, providing a straightforward assessment of whether your property needs a simple seal or a more technical void filling project. We prioritize quality over volume, ensuring that every project we handle is built on a foundation of precision and skill. When you choose Mixan, you are working with local experts who take pride in protecting your property and providing solutions that stand the test of time.
15+ Years of Structural Expertise
Serving the Midwest since 2008 with a track record of solving complex subgrade issues.
Honest, Simple Solutions
We provide clear, transparent guidance on the most effective ways to stabilize your concrete.
Advanced Structural Materials
We use only high-strength, non-shrink materials designed for maximum durability in Midwest soils.
Local Family Integrity
Dealing directly with a regional leader that stands behind the quality and permanence of its work.
Frequently Asked Questions
Common indicators include a hollow sound when walked upon, water disappearing quickly into cracks, or a slab that “pumps” or moves slightly when driven over.
They are very similar, but void filling is done to support a slab that hasn’t sunk yet, whereas mudjacking is used to lift a slab that has already settled.
Yes. Most cracks are caused by a lack of support. By filling the voids, you provide a solid base that prevents the stress that causes concrete to snap.
Most voids are caused by water washing away the soil, decaying organic matter (like old tree roots), or poor soil compaction during initial construction.
Most residential projects take just a few hours. Because there is no demolition, you can return to using your concrete almost immediately.