Permeation grouting, also known as cement grouting or pressure grouting, fills cracks or voids in soil and rock and permeates coarse, granular soils with flowable particulate grouts to create a cemented mass.
Depending on the conditions, Portland cement or microfine cement grout is injected under pressure at strategic locations through single ‘port’ or multiple ‘port’ pipes. The grout particle size and void size must be matched properly to allow the cement grout to permeate. The grouted mass has an increased strength, stiffness, and reduced permeability.
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Keller has provided permeation grouting solutions for decades. Its fleet of low headroom, tight access rigs minimises disruption to normal facility operations. Automated digital systems can also be used to monitor and record flow rates, grout volumes and grout pressures ensuring the grouting specification is achieved.