LOCKING METHODS FOR FITTINGS ON REINFORCING RODS

A NEW TYPE HIGH-STRENGTH DEFORMED-STEEL REINFORCING ROD HAS BECOME AVAILABLE UNDER THE TRADE NAME DYWIDAG. THE BAR DEFORMATIONS ARE ROLLED IN SUCH A MANNER THAT THEY CAN BE EMPLOYED AS A THREAD AND EXTEND THE ENTIRE LENGTH OF THE BAR. THE BARS WERE DESIGNED AS A MEANS OF POST-TENSIONING CONCRETE, AND THE BASIC PURPOSE OF THE DEFORMATIONS IS TO PROVICE BONDING. A DEVICE IS REQUIRED FOR LOCKING THE FITTING ONTO THE ROD AT THE DESIRED POINT. LOCKING METHODS TESTED BY ONTARIO HYDRO ARE SUMMARIZED: THREAD STAKING, METAL WEDGES, WIRE WRAPPING, DRIVE SCREWS, LOCK NUT, STEEL DOWEL AND SET SCREW. THE LAST THREE METHODS GIVE GOOD RESULTS, BUT THE SET SCREW HAS THE ADVANTAGE OF BEING EASIER TO MANUFACTURE.

• Supplemental Notes:
  • Vol 21, No 3, PP 7-8
• Authors:
  • Ewing, H A
• Publication Date: 1969

Media Info

• Serial:
  • Ontario Hydro Research Quarterly
  • Publisher: Ontario Hydro, Research Division

Subject/Index Terms

• TRT Terms: Bonding; Canal lock operations; Concrete; Dowels (Fasteners); Material reinforcement; Posttensioning; Reinforcing steel; Rods; Screws
• Subject Areas: Construction; Highways;

Filing Info

• Accession Number: 00215286
• Record Type: Publication
• Files: TRIS
• Created Date: Jul 21 1970 12:00AM