Permeation grouting is an economical means to remediate existing and potential geological and foundation support problems, without causing major disruption to the structure or operations. The pressure grouting process consists of the direct pressure injection of liquefied material into voids, cracks, fractures, cavities or even between bearing walls. The permeation grouting methods can take the forms of compaction, curtain, chemical, slurry or any other permeation application used to install a liquefied or low-mobility permeation material. Various types of cement with admixture are available to tailor for various needs of our clients.
Compaction grouting is a soil improvement method that can increase the bearing capacity of soils. Cement grout is pumped under pressure into a specific area of ground to compact its surrounding areas of soil. Under intense pressure, injected grout pushed weak soil to the side as it forms a grouted mass, sized as needed. The compaction grouting methodology is known as pressure grouting.
Compaction grouting is used for preparation of soils, lifting structure and old building filling voids in ground cavities such as limestone Kars tic formation, relieving abutments and remediation of dangerous sinkholes. Usually, compaction grout is applied in stage beginning at the lowest point of a drilled shaft then working upward through weak ground.
On very shallow pressure grouting applications, it can be injected from top down, building a cap. This method compacts upper portions of treated area first so that it becomes a dense cap to help contain expanding grout at lower levels. This is done by placing an inflated packer in a drilled hole while pumping cement at high pressure and later sets, the pressure treated soil underneath the foundation has greater uniformity and gives maximum soil stabilization that provides solid foundation support.