Bond performance of reinforced concrete beams with electric arc furnace slag aggregates. (30th May 2020)

• Record Type: Journal Article
• Authors: Lee, Yong-Jun; Kim, Hyeong-Gook; Kim, Min-Jun; Kim, Dong-Hwan; Kim, Doo-San; Kim, Kil-Hee
• Is Part Of: Construction & building materials. Volume 244(2020)
• Publication Date: 2020-05-30
• Subjects: Concrete -- Electric arc furnace oxidizing slag aggregates -- Bond strength -- Bond behavior; Building materials -- Periodicals; 624.18
• DOI: 10.1016/j.conbuildmat.2020.118366
• Languages: English
• ISSNs: 0950-0618

Abstract

Highlights: Method of using EAF (electric arc furnace) oxidizing slag aggregates to efficiently reduce environmental loads. Bond strength of RC beams using EAF oxidizing slag aggregates. Excellent bond performance of concrete with EAF oxidizing slag aggregates. Performance evaluation of RC members with EAF oxidizing slag aggregates, reflecting mechanical properties. Abstract: The present study was conducted to evaluate the bonding performance of reinforced concrete beams with electric arc furnace oxidizing slag aggregates. The specimens were tested by varying the aggregates, and the top and bottom longitudinal reinforcement position, depending on concrete placement. The specimens containing electric arc furnace oxidizing slag aggregates showed bond performance that was on average of about 8% to 20% higher than that of the specimens using natural aggregates. The bond strength was higher at the corner longitudinal reinforcement than at the inner longitudinal reinforcement and higher at the bottom reinforcement than at the top reinforcement, regardless of the aggregate type. The experimental results were consistent with results from previous studies with concrete containing natural aggregates. Comparison with previous studies confirmed the excellent bond performance of the concrete with electric arc furnace oxidizing slag aggregates, and demonstrated the use of concrete containing electric arc furnace oxidizing slag aggregates for structural members.