New housing developments aren't always chosen based on the suitability of the soil. That's because the soil can often be amended, which makes it possible to turn about any type of property into the perfect setting for a new subdivision. One soil treatment that helps stabilize the soil is chemical grouting. This can be done to prepare for new construction and it can also be done for your existing home if the soil underneath it has become unstable. Here's a quick overview of how it works:
It Is Similar To Cement Grouting
You've probably heard the term mud jacking. It's a type of foundation repair where a cement slurry is pumped under the foundation of your home to fill voids in the soil. The cement mixes with the soil to fill holes and raise a sunken foundation before the grout dries in place. Cement grout works in certain applications. Other times, chemical grouting works better. The two are similar but they are different because of the composition of the grout. Cement grout has a lot of particulates that make it less suitable for use in some types of rock and soil. Chemical grouts have fewer suspended particles, and some are nearly as clear as water. This helps the grout flow smoothly into tiny cracks in rocks for better stabilization.
The Grout Is Pumped Into The Soil
The chemical grout is pumped into the area to be treated. First, a pipe is lowered into the ground and then the grout is forced through it so it mixes with the soil. If you're having grout injected to level your foundation, sidewalk, or pool deck, then the contractor may drill a hole in the concrete to drop a pipe for adding the grout. The grout cures and becomes hard, which is how it stabilizes the soil and raises a foundation. Chemical grout usually lasts longer than cement grout, which is why chemical grout is often preferred for civil projects such as housing developments. There are a few types of chemical grout and each of them has different properties. Some require water to complete the chemical reaction process and others do not.
Some chemical grout types undergo a chemical reaction that causes the grout to expand before it hardens. Some of these products are waterproof so they can be used to control underground water. If the water table under your home shifts and causes problems with your foundation, the contractor may use a chemical grout rather than a cement grout to help correct the situation. While cement does an excellent job of stabilizing soil, it does little to stop water since water can seep through it.
If you have problems with the foundation of your home or if your pool deck is sinking, then injecting grout into the soil could be one way to fix it. The choice of the grout mixture depends on many factors. You'll need to discuss your options with your contractor to find out if cement or chemical grouting is the best choice for you.
Contact a company like A-PAC Pressure Grouting Inc. for more information and assistance.