Stress-strain response of A706 grade 80 reinforcing steel. (1st August 2017)

• Record Type: Journal Article
• Authors: Overby, David; Kowalsky, Mervyn; Seracino, Rudolf
• Is Part Of: Construction & building materials. Volume 145(2017)
• Page Start: 292
• Page End: 302
• Publication Date: 2017-08-01
• Subjects: Seismic -- Reinforced concrete -- Reinforcing steel -- Grade 80; Building materials -- Periodicals; 624.18
• DOI: 10.1016/j.conbuildmat.2017.03.200
• Languages: English
• ISSNs: 0950-0618

Abstract

Highlights: A706 grade 80 use in seismic design is currently restricted. 788 tensile tests of A706-80 rebar were conducted. Values of five major stress-strain parameters were statistically identified. No observable susceptibility to strain aging. Abstract: Before ASTM A706 grade 80 rebar may be specified in the seismic design of structures, its mechanical properties must be well understood and calibrated on a statistical basis. Based on the results of 788 tensile tests of A706 grade 80 rebar encompassing bar sizes No. 4–No. 18 (approx. metric No. 13–No. 57), five major stress-strain parameters are statistically evaluated and used to develop recommendations for an expected monotonic stress-strain curve. An existing material model is shown to accurately capture the shape of the monotonic stress-strain curve. Additional tests are used to evaluate the strain-aging performance of the steel.