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Advances in Materials Science and Engineering
Volume 2017, Article ID 8208079, 11 pages
Research Article

Compression Behavior of Confined Columns with High-Volume Fly Ash Concrete

1Department of Civil and Environmental Engineering, Gachon University, Seongnam-si, Gyeonggi-do 13120, Republic of Korea
2Department of Architectural Engineering, Gachon University, Seongnam-si, Gyeonggi-do 13120, Republic of Korea

Correspondence should be addressed to Wonchang Choi; moc.liamg@iohc.gnahcnow

Received 10 May 2017; Accepted 18 June 2017; Published 30 July 2017

Academic Editor: Prinya Chindaprasirt

Copyright © 2017 Sung-Won Yoo et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


The use of fly ash in ordinary concrete provides practical benefits to concrete structures, such as a gain in long-term strength, reduced hydration heat, improved resistance to chloride, and enhanced workability. However, few studies with high-volume fly ash (HVFA) concrete have been conducted that focus on the structural applications such as a column. Thus, there is a need to promote field applications of HVFA concrete as a sustainable construction material. To this end, this study investigated the compressive behavior of reinforced concrete columns that contain HVFA with a 50 percent replacement rate. Six columns were fabricated for this study. The study variables were the HVFA replacement rate, tied steel ratio, and tie steel spacing. The computed ultimate strength by the American Concrete Institute (ACI) code conservatively predicted the measured values, and, thus, the existing equation in the ACI code is feasible for confined RC columns that contain HVFA. In addition, an analysis model was calibrated based on the experimental results and is recommended for predicting the stress-strain relationship of confined reinforced concrete columns that contain HVFA.