TRANSMISSION LENGTHS OF PRETENSIONED TENDONS FROM MEASUREMENTS OF PULL-IN. SECOND NATIONAL STRUCTURAL ENGINEERING CONFERENCE, ADELAIDE, 3-5 OCTOBER 1990; PREPRINTS OF PAPERS

Laboratory tests on the beam sections prestressed with 12.5 mm diameter and 15.2 mm diameter seven wire strands showed that the relationship between the pull-in of a strand at transfer and its transmission length was linear. Internal cracking of the concrete surrounding a strand will produce large pull-in and long transmission lengths with poor rate of build up of the prestress force. It was established that a value for pull-in of a strand greater than 0.14 strand diameters indicates either poor transfer bonding of the strand or the presence of cracks in the bursting zone around that strand. Other factors which were found to influence the pull-in and the transmission length were the spacing of strands when this was less than 5 strand diameters and more than 250 mm of concrete below the strand at the time of casting. For the covering entry of the conference see IRRD 831067. (Author/TRRL)

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/isbn/0858255065
• Corporate Authors:

  Institution of Engineers

  11 National Circuit
  Barton, A.C.T.,   Australia 
• Authors:
  • CHANDLER, I J
• Publication Date: 1990-10

Media Info

• Features: References;
• Pagination: p. 131-135
• Serial:
  • Publication of: Institute of Transport Economics
  • Publisher: Norwegian Institute of Transport Economics

Subject/Index Terms

• TRT Terms: Beams; Concrete tests; Conferences; Flexural strength; Laboratory tests; Prestressed concrete; Prestressing; Pretensioning; Quality assurance; Structural tests; Tendons
• Uncontrolled Terms: Prestressing strands
• Subject Areas: Bridges and other structures; Geotechnology; Highways; Materials;

Filing Info

• Accession Number: 00620280
• Record Type: Publication
• Source Agency: ARRB
• ISBN: 0-85825-506-5
• Files: ITRD, TRIS
• Created Date: Mar 31 1992 12:00AM