In today’s market, it is imperative to be knowledgeable and have an edge over the competition. ACI members have it…they are engaged, informed, and stay up to date by taking advantage of benefits that ACI membership provides them.
Read more about membership
Become an ACI Member
Founded in 1904 and headquartered in Farmington Hills, Michigan, USA, the American Concrete Institute is a leading authority and resource worldwide for the development, dissemination, and adoption of its consensus-based standards, technical resources, educational programs, and proven expertise for individuals and organizations involved in concrete design, construction, and materials, who share a commitment to pursuing the best use of concrete.
American Concrete Institute
38800 Country Club Dr.
Farmington Hills, MI
Feedback via Email
Home > Publications > International Concrete Abstracts Portal
The International Concrete Abstracts Portal is an ACI led collaboration with leading technical organizations from within the international concrete industry and offers the most comprehensive collection of published concrete abstracts.
Title: High-Strength Reinforcement in Columns under High Shear Stresses
Author(s): Drit Sokoli and Wassim M. Ghannoum
Publication: Structural Journal
Appears on pages(s): 605-614
Keywords: columns; high-strength steel; reinforced concrete; seismic
Abstract:This study investigated the performance of seismically detailed concrete columns reinforced with high-strength steel. Columns were subjected to high shear stresses and relatively high axial load to investigate the ability of high-strength reinforcement in maintaining the integrity of concrete shear-transfer mechanisms. Two columns (CS60 and CS80) were respectively reinforced with conventional Grade 60 (420 MPa) and Grade 80 (550 MPa) ASTM A706 bars. A third column, CS100, was reinforced with newly developed Grade 100 (690 MPa) bars. Columns had almost identical reinforcement layouts and flexural strengths. Shear and axial failure occurred at comparable drift levels in CS60 and CS80. CS100 sustained bond degradation around the longitudinal bars at relatively low drifts, raising questions about bar development lengths and allowable lengths of concrete members reinforced with high strength steel. Strain demands in longitudinal and transverse bars were significantly higher in the specimens reinforced with high strength steel.
Click here to become an online Journal subscriber