PolyLEVEL Could Be the Answer to Your Concrete Woes

April 1st, 2013

While concrete is a weighty material, even more so are the vehicles and structures that reside upon them. Sometimes, the mutual weight of the concrete and the structure that it’s supporting can cause soil settlement to occur. Once the soil beneath the concrete compresses, dangerous conditions can and will start to occur. For example, residential concrete roadways can become un-drivable due to dangerous or unusable conditions.

Solution

Originally, contractors would raise the concrete by pumping a liquid mortar beneath the section that had settled. This process is called mudjacking and is very hard to control. The added mass of the mortar puts even more weight on the soil. Luckily, foundation and masonry repair specialists have a new technique that’s proven to be more effective at raising settled concrete – with injection molding. Polymer injection harnesses the expansive force of a structural grade geopolymer to raise settled concrete, filling voids in the soil and strengthening the soil that has poor load-bearing qualities.

The polymer consists of two separate liquids that are combined at the injection nozzle to trigger a chemical reaction. That reaction turns the blended ingredients into expanding, high-density foam. The foam will flow into voids and between loose soil particles, increasing to about 15 times its initial volume. This expansive action responds quickly, effectively lifting the settled concrete. An experienced technician can control the application to create just the right amount of lifting pressure.

The polymer hardens quickly after doing its work. Within just 30 minutes, it reaches 90% of its final strength, enabling damaged concrete roads and slabs to be put back into service right away. The speed of polymer injection repairs is another huge advantage over mortar pumping or mudjacking.

In addition to lifting and realigning settled and/or shifted concrete, polymer injection can be done prior to construction to improve soil stability and strength. Injections as deep as 20ft.-30ft. are possible.

Advantages

Strong yet Light

Injected polymer weighs only about 4lbs per cubic ft., compared to 120lbs per cubic ft. for standard mudjacking fill materials. So even though it is extremely light, it’s expansive properties are strong enough to support the heavy structures and other objects that rest upon it.  PolyLEVEL’s light weight makes it useful where denser fill material might impose an undesirable load on weak soils. Despite its light weight, PolyLEVEL can support substantial loads; it typically provides greater lifting power than mudjacking.

Waterproof

Once it has been cured, the polymer injection will not wash away. PolyLEVEL’s waterproofing properties are beneficial in certain applications, where water is a constant threat for the area.

Stable

PolyLEVEL does not react with soil or moisture; nor will it leach harmful chemicals.

Quick curing

Down time is minimized with a PolyLEVEL repair. Full loading of the foundation, roadway or other structural element can usually happen about 15 minutes after the polymer is injected.

Adjustable

Adjusting the density and expansive force of the 2-part PolyLEVEL foam affords a wide range of geotechnical uses. Lifting force can be adjusted by fine-tuning the chemical reaction that causes the foam to expand. An experienced applicator can factor not only the weight of the structural element but also soil characteristics and temperature and weather conditions. Special formulations are possible for applications where water must be displaced.

Noninvasive

Polymer-injection equipment isn’t bulky, enabling applicators to access confined areas. When properly injected, PolyLEVEL is not as messy or disruptive as other slab and foundation-lifting techniques.

If the sidewalk or driveway in front of your home has settled, PolyLEVEL may be the answer. Saber Foundation Repair offers a wide range of solutions including slab raising, foundation leveling, underpinning, wall straightening and stabilizing with wall anchors, helical and push pier installation, and more! Contact Saber today to schedule your free estimate.

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