Defining the upper viscosity limit for mineral slurries used in drilled shaft construction : [summary].

Details

• Creators:
  Mullins, Gray
• Corporate Creators:
  University of South Florida
• Subject/TRT Terms:
  Bentonite Bentonite Slurry Polymers Reinforcing Bars Shafts (Machinery) Shear Strength Slurry Viscosity
• Publication/ Report Number:
  BDK84-977-24
• Resource Type:
  Tech Report
• Geographical Coverage:
  Florida
• Corporate Publisher:
  Florida. Dept. of Transportation
• 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.
  
  
• Format:
  PDF
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  urn:sha-512:ef32a73ad0476f1b8c7c63eebfa8872e1265323c04bee18d6994790a84dcaf45338b8a3832c5c09a1fa6ef623da722f6ead3397470fd687e6a79dbf1ae9ba589
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/20371/dot_20371_DS1.pdf
• File Type:
  [PDF - 741.49 KB ]