The use of pressure grouting as a construction tool and as a design method in tunneling operations is described. It is noted that the state of the art in the U.S. is considered to be less advanced than that in Europe, although an awareness and use of the available technology has recently increased in the U.S. As long as pressure grouting is considered "contract" work, rather than a professional engineering service, U.S. design work will follow standard specifications and may be limited to portland cement, with a few modifications, and to one or two chemical grout systems. For future research, a stress-strain design criteria for different chemical grouts under different soil conditions are necessary for adequate and economic solidification of soft ground to facilitate tunnel driving and to make rational analytical predictions of surface movements. Techniques are also needed for grout filling tailpiece annular space and materials to allow filling of that space as the cavity is formed. Grout injection systems should be incorporated into tunnel machines to provide continuous grouting as the tunnel advances.

  • Record URL:
  • Availability:
  • Supplemental Notes:
    • This article appeared in TRB Special Report No. 171, Tunnel Construction: State of the Art and Research Needs. Distribution, posting, or copying of this PDF is strictly prohibited without written permission of the Transportation Research Board of the National Academy of Sciences. Unless otherwise indicated, all materials in this PDF are copyrighted by the National Academy of Sciences. Copyright © National Academy of Sciences. All rights reserved
  • Corporate Authors:

    Transportation Research Board

    500 Fifth Street, NW
    Washington, DC  United States  20001
  • Authors:
    • Graf, Edward D
  • Publication Date: 1977

Media Info

  • Media Type: Print
  • Features: Photos;
  • Pagination: p 26
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00156043
  • Record Type: Publication
  • Files: TRIS, TRB, ATRI
  • Created Date: Oct 13 1977 12:00AM