POST-TENSIONED TENDONS IN PRESTRESSED CONCRETE-TO- GROUT OR NOT TO GROUT?

The need to grout post-tensioned tendons in prestressed concrete structures is discussed in this paper. Consideration is given to the possible alternative of using unbonded tendons. Considerations involve corrosion of tendons, extent of concrete cracking, flexural strength of sections, fatigue of anchorages, energy dissipation and elastic recovery, energy release at failure, friction losses, and other factors. It is recommended that the use of unbonded tendons should be approached with caution in an earthquake country, but that consideration should be given to a revision of NZSR 32 to allow the decision as to whether to use bonded tendons or unbonded tendons with special precaustions to be made by the designer on proper engineering grounds.

  • Availability:
  • Corporate Authors:

    Technical Publications Limited

    C.P.O. 3047
    Wellington,   New Zealand 
  • Authors:
    • Park, R
  • Publication Date: 1975-11-15

Media Info

  • Features: Figures; References;
  • Pagination: p. 315-319
  • Serial:
    • NEW ZEALAND ENGINEERING
    • Volume: 30
    • Issue Number: 11
    • Publisher: Institution of Professional Engineers New Zealand
    • ISSN: 0028-808X

Subject/Index Terms

Filing Info

  • Accession Number: 00133971
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Jun 23 1976 12:00AM