High-strength prestressing strand, method for manufacturing the same, and concrete construction using the same
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Jan 4, 2011
Issued Date -
N/A
app pub date -
Feb 21, 2007
filing date -
Feb 23, 2006
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
or more, and a load at 0.2% permanent elongation is 266 kN or more. A relaxation value measured after a 1000-hour relaxation test is 2.5% or lower and a diameter of the core wire is 5.35±0.3 mm and a diameter of the outer wires is 5.15±0.25 mm. The core wire and the outer wires each have a composition of at least 0.90% carbon. The prestressing strand is manufactured by stranding the core wire and outer wires, giving a stretching treatment, and giving a bluing treatment at a temperature of 380° C. or more and 430° C. or less after or at the same time with the stretching treatment.
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully