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Defining the upper viscosity limit for mineral slurries used in drilled shaft construction : [summary].
  • Published Date:
    2014-02-01
  • Language:
    English
Filetype[PDF-741.49 KB]


Details:
  • Creators:
  • Corporate Creators:
  • Publication/ Report Number:
    BDK84-977-24
  • Resource Type:
  • Geographical Coverage:
  • Format:
  • Abstract:
    Many structures built on Florida’s variable, sandy

    soils require deep foundations, such as pilings.

    Although pilings may be more familiar, drilled

    shafts are also often used. Drilled shafts require

    less expensive equipment and create less of the

    vibration that can disturb nearby structures and

    inhabitants. A drilled shaft foundation is created

    by drilling a hole of the correct diameter and

    depth. A steel reinforcing frame (cage) is placed

    in the hole, and concrete is

    added. The walls of the hole

    must remain intact during all

    phases of the installation.

    One means of doing this uses

    a clay-water mixture, called

    slurry, to fill the hole and

    stabilize the walls, especially

    where groundwater threatens

    wall integrity. After the cage

    is placed, concrete is pumped

    in, starting at the bottom;

    this displaces the slurry,

    which is captured for reuse.

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