University of Illinois Urbana-Champaign

Relaxation Characteristics of Prestressing Strand

Buckler, J.D.; Scribner, C.F.

Content Files
SRS-520.pdf

Permalink

https://hdl.handle.net/2142/14128

Description

Title
Relaxation Characteristics of Prestressing Strand
Author(s)
  • Buckler, J.D.
  • Scribner, C.F.
Issue Date
1985-08
Keyword(s)
  • Prestressed concrete
  • Steel -- Relaxation
Date of Ingest
2009-10-30T17:19:41Z
Abstract
Relaxation characteristics of seven-wire prestressing strand were studied in this experimental investigation. Tests were conducted on both stress-relieved strand and low-relaxation strand. Two series of tests were carried out on both types of strand.. First, strand specimens were tested under conditions of constant strain. Second 3 stress in the strand specimens was reduced at a time of 24 hours after the initial tensioning3 then held at the strain accompanying their reduced stress for the remainder of the test. A quadratic equation was developed to predict losses of stress due to relaxation. The effects of stress reduction were accounted for by the use of a load reduction variable included in the quadratic equation.
Publisher
University of Illinois Engineering Experiment Station. College of Engineering. University of Illinois at Urbana-Champaign.
Series/Report Name or Number
Civil Engineering Studies SRS-520
Type of Resource
text
Genre of Resource
Technical Report
Language
en
Permalink
http://hdl.handle.net/2142/14128

Owning Collections

Civil Engineering Studies: Structural Research Series PRIMARY