Injection Division : Subsurface Columns via Permeation Grouting
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Pressure Grouting
Consel, Inc. takes great pride in offering a sound alternative to the high cost of replacing your sunken concrete. The terms "Pressure Grouting", "Slabjacking" or "Mudjacking" can be applied to the process we use to stabilize and lift your sunken concrete. Our experienced staff can evaluate your problem areas and devise a plan to stabilize and lift your sunken concrete.
The Pressure Grouting process starts with assessing the areas that require stabilizing and/or lifting. Once the problem areas are determined we strategically core a series of 2" holes in the concrete, directly over any voids or sunken areas. A grout slurry consisting of portland cement and fly ash is then mixed and pumped into these locations, filling the voids and raising the concrete with as little as 5 psi line pressure. In order for this procedure to work effectively, a moderate level of structural integrity is necessary in the existing concrete slab. Even if there are full cracks through the slab it is still possible to achieve the desired results due to the experience and control our crews have over the line pressure and slurry thickness.
Pressure Grouting is a fairly quick procedure, taking as little as one day for small projects. In many instances we install Compaction Grout Columns in the same holes used in the Slabjacking process, to add additional support and to reduce the concerns of recurring settlement. This process consists of installing a grout tube to a predetermined depth at each grouting location, previously cored for Slabjacking process. Once in place, the grout slurry is pumped through the tube, into the soils under high pressure. As the pumping takes place the grout tube is slowly withdrawn from the soil. The grout displaces, compacts and solidifies the surrounding soil thus forming a compaction grout column or piling.
Permeation Grouting
Permeation Grouting is a process used to improve or stabilize loose and/or shifting soils and is typically used in sandy soil conditions, as this type of soil is better suited to allow the grout to permeate more readily into the soil over a larger area. The technique consists of installing an injection pipe or probe into the ground, to a predetermined depth and then pumping a variety of liquefied materials into a soil and/or rock formations to fill voids encapsulate and solidify the surrounding soils into the zone(s) needing improvement. There are several techniques and materials used with this process and determining how the probes are installed, what type and size of probe is used and what material is used are all chosen by answering several questions such as; What is the desired or required results?; and What are the specifics of the repair being performed?
Consel uses a wide variety of specialized products from standard Portland cement grout mixes, Microfine Cements, engineered specifically for Permeation Grouting and Hydro Active Urethane Grouts to achieve your desired and needed results. Consel, Inc. is concerned for our environment and chooses the highest quality materials, which do not cause pollution or damage to the underground soils or water supplies.