Abstract

There have been historical concerns regarding the ductility of welded wire reinforcement (WWR). Recent changes in ACI 318-19 now require all grades of A615 and Grade 100 A706 nonprestressed steel reinforcement to have a ratio of tensile strength to yield strength greater than 1.10 and 1.17 respectively. Although this code requirement does not currently apply to WWR, this preemptive study investigated the current state of the art of WWR manufactured in North America in preparation for such a possibility. This project included the tensile-testing of approximately 365 WWR material specimens of various cross-sectional sizes to determine the ratio of tensile-to-yield strength for comparison with the recent code changes for A615 and A706 grade steel. Additionally, six 20-ft concrete beams reinforced with WWR mats were cast and tested to validate that strains assumed in design are actually achieved prior to failure.

Degree

College and Department

Ira A. Fulton College of Engineering; Civil and Environmental Engineering

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