Concrete Placement in Drilled Shafts Quiz
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Questions and Answers

What is the primary purpose of using a tremie pipe when placing concrete in a drilled shaft?

  • To discharge the concrete out the bottom of the pipe, filling the drilled hole
  • To ensure a smooth, durable, and visually appealing surface
  • To transport the concrete from the truck to the drilled hole
  • To prevent the intrusion of water or soil into the concrete (correct)
  • Which of the following is NOT a common method for placing concrete in drilled shafts?

  • Using boom and line concrete pumps
  • Screeding the concrete surface (correct)
  • Directly from the concrete truck
  • Pouring the concrete through a tremie pipe
  • What is the purpose of the hopper on top of a tremie pipe?

  • To prevent the intrusion of water or soil into the concrete
  • To stabilize the borehole during excavation
  • To transfer the concrete from the truck to the tremie pipe (correct)
  • To ensure a smooth, durable, and visually appealing surface
  • What is the typical diameter range of a tremie pipe used for placing concrete in drilled shafts?

    <p>10 to 12 inches</p> Signup and view all the answers

    What is the purpose of using a drilling fluid when the borehole is underwater or unstable?

    <p>To stabilize the borehole during excavation and displace the fluid with concrete</p> Signup and view all the answers

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