Cement Grouting

Typical Solutions

Cement grouting fills cracks or voids in soil and rock and permeates coarse, granular soils to create a cemented mass. Hayward Baker’s fleet of low headroom, tight access rigs minimizes disruption to normal facility operations.

  • Cement grout test program to grout fissures for a proposed geologic repository in Kincardine, Ontario, Canada.
  • Cement grouting to fill open fractures at the intake of a hydroelectric plant in Watertown, New York.
  • Crews performing groundwater control grouting in the LACMTA tunnels.
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Common Uses

  • Create barriers to groundwater flow
  • Underpin foundations
  • Provide excavation support
  • Stabilize and strengthen granular soils

Technical Details

Cement grouting, also known as slurry grouting or high mobility grouting, fills pores in granular soil or voids in rock/soil, with flowable particulate grouts. The grout particle size and void size must be matched properly to allow the cement grout to permeate. 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 grouted mass has an increased strength, stiffness, and reduced permeability. 

Cement grouting can offer an economic advantage for underpinning applications over alternative approaches such as removal and replacement or piling, and can be performed where access is difficult and space is limited. Since the effectiveness of cement grouting is independent of structural connections, this technique is readily adaptable to existing foundations and can typically be accomplished without disrupting normal facility operations.

Hayward Baker has developed proprietary equipment and software (iGroutTM) to allow real-time monitoring of all parameters during the cement grouting process. The operator can adjust the parameters (such as mix type, flow rate, pressure, and volume limits) based on the real-time acquisition of drilling and grouting data, while simultaneously monitoring for any movements or deflections of the ground or nearby structures. Data collected during drilling and grouting is recorded on a server that produces grouting reports, as well as CAD drawings depicting a visual representation of the completed work. Use of this advanced monitoring and control system increases accuracy, efficiency, and quality control of cement grouting.

Related Projects

  • Solutions:

    Groundwater Control

  • Market:

    Infrastructure

    Water, Sewage & Waste Disposal

  • Technique:

    Cement Grouting

  • Location:

    Thornton, IL

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Aerial

Thornton Composite Reservoir

Metropolitan Water Reclamation District of Greater Chicago
  • Solutions:

    Groundwater Control

  • Market:

    Infrastructure

    Railway

    Tunnels & Shafts

  • Technique:

    Cement Grouting

    Permeation (Chemical) Grouting

  • Location:

    Los Angeles, CA

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Lacmta Tunnel Maintenance Chemical Grouting Shotcrete

Tunnel Maintenance Contract

Los Angeles County Metropolitan Transportation Authority (LACMTA)

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