Recent Topics on Prestressing Steel
By M. Yamada
Concrete Journal, Vol.47, No.11, Nov. 2009
- Synopsis
- Recent topics on prestressing steel in Japan is described., especially 2008-JIS-revision, various factory applied corrosion protection and their advantages. Delayed curing epoxy resin pre-gouted strands are now applied for longitudinal prestressing as well as transversial prestressing. Since external cables and stay cables are increased, epoxy coated & filled stands and galvanized strands are also getting popular in bridge construction. Advantages and the ductility of 2 230 MPa grade high strength steel are also introduced. Some particular cautions on the handling of prestressing steel on sites are also described.
- Keywords:
- JIS revision, factory applied corrosion protection, delayed-curing epoxy-resin pre-grouted strands, epoxy coated & filled strands, galvanized strands, enhanced anti-fretting fatigue behavior, 2 230 MPa grade high strength strands, S-shaped strands and Z-shaped strands
