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Pressure Grouting

Pressure grouting is the process of pumping cement grout into the soil beneath structures that are experiencing abnormal settlement. Grout is pumped through steel pipe injectors (needles) that have been jetted or driven into the weak soil beneath a building or other structure. The depth of each injection is dictated by the exact soil condition at that location, and by the weight of the structure being supported. Typically, grouting depths vary from 4 feet to 25 feet below the surface. Deeper injections could be required to fill sinkholes or support tall buildings. Grouting depths beneath typical homes normally do not exceed 15 feet. The pressure at which the grout is injected also depends on the soil and the weight of the structure, and usually are between 50 psi and 500 psi.

Pressure grouting is a very powerful tool when performed by qualified personnel under the direction of an engineer who is experienced in this field. Pressure grouting can be disastrous when performed by inexperienced personnel. It is easier to break things with high pressure grout than it is to fix things. It is common for inexperienced grouting crews to hump up floors, fill plumbing lines, and crack swimming pools. If you have a building or pool that may require pressure grouting make sure that the contractor you choose is state licensed, insured and working under the direction of a Professional Engineer. The smart building owner will require proof of license, insurance certificates specifically directed to them, and the name, license number and phone number of the engineer supervising their work.


Mud Jacking

Mud jacking is also the process of pumping cement grout under pressure, however, instead of pumping grout down deep into the soil it is pumped directly beneath a floor slab or pool deck to fill voids and/or lift to lift the slab. The grout acts like a hydraulic fluid to lift (mud jack) the slab back to its original position, or as close as possible. The grout then hardens to support the slab or pool deck.



Call us or just fill out the contact form to request an inspection, we will come out to your property and perform soil probe testing (soil boring) and determine if it is an unstable soil condition.



William Kinsel (321) 343-0840.

Melbourne, Florida