Cracks and holes can occur in pretty much any surface, but there are many grouting techniques out there that can patch those voids to ensure safety and efficiency. First off, grouting is a process whereby slurry or grout is injected to fill subsurface soil and rock voids or even pores, according to Geo-Solutions. This helps to make the surface stronger and more resistant to water, thereby extending its life. With so many different variations of soil and rock grouting for a variety of projects, it’s no wonder you may feel overwhelmed when wondering which type of grouting technique is best for you. From simple to highly involved, each technique brings something different to the table in terms of cost and efficiency.
Types of Grout
You may be familiar with grout on a smaller scale when it comes to your bathroom and kitchen tiles or walls. You probably only realize grout is there when it starts to stain or crack. But other types of grout involve an even more complex purpose outside within the ground when it comes to soil and rock grouting. These types of grouting projects can range from mine grouting and dam repair to void filling and jet grouting. You may also require types like tunnel and pipe filling, and even subsidence remediation, which basically addresses the issue of sinkholes. Grouting outdoors involves the pumping of a cement-like material into the subsurface to achieve various objectives, such as structure settlement, filling voids and preventing the flow of water. Sometimes, you need to enlist the services of a geoenvironmental or geotechnical contractor that specializes in soil mixing, slurry walls, jet grouting and trenches, along with grouting services like slab jacking and mine void filling. In addition to jet grouting, other techniques include permeation, compaction, fracture/compensation, structural seepage and hot bitumen grouting. These additional techniques have been refined over the years to add to the basic services of grouting and offer more complex strength and durability properties.
When it comes to grouting on a large scale, such as for outdoor construction projects and the like, many machines and equipment are needed to ensure the precise placement of slurry or grouting. The most cost effective solution in terms of which grouting technique to use is based on the type of soil or rock involved, the project parameters and budget. This is also because there are several different types of soil involved too and no two types are the same. Take jet grouting, for example. Also referred to as jet mixing, this technique utilizes high-pressure streams to mix and cement different types of soil, featuring a rotating drill with tiny nozzles that eject the grout into columns. This is a highly versatile type of grouting due to the fact that it can be used to treat a variety of soils, from gravel to clay and beyond. It’s ideal for applications around utility lines, as it has little to no vibration and low noise.
The goal of any soil and rock grouting is to improve the construction processes of any site and fill voids that will offer an unmatched strength, durability and versatility for years to come.