This paper describes the centrifugal shotcrete (CS) method for lining pile boreholes. The method applies mortar with equipment based on the centrifugal force generated by a rotating impeller. The CS method is modification of the traditional Chicago Method, which uses sequential excavation of a cylindrical hole and liner plates held in place by steel rings to prevent caving. In the Chicago Method, cementitious grout fills the interstice between soil and liner. The CS method uses shotcrete as a replacement for the liner plates and grout. The CS method offers several improvements over the Chicago Method, including a shortened construction period, shortened and decreased pile dimensions, and decreased dust in the working environment. More than 400 foundation piles successfully have been constructed in Japan using the CS method. By modifying the equipment, the CS method also could potentially be used for lining large-size boreholes and smaller tunnels.


  • English

Media Info

  • Features: Figures; References; Tables;
  • Pagination: p. 43-48
  • Serial:
    • Concrete International
    • Volume: 25
    • Issue Number: 9
    • Publisher: American Concrete Institute (ACI)
    • ISSN: 0162-4075

Subject/Index Terms

Filing Info

  • Accession Number: 00963334
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Sep 15 2003 12:00AM