Evaluation of Compressive and Shear Strength Characteristics in High Volume Fly Ash Concrete

Yoo, Sung Won; Jung, Sang Hwa; Kwon, Seung Jun

doi:10.4028/www.scientific.net/amm.584-586.1282

Cited by 3 publications

(1 citation statement)

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“…The use of fly ash in OPC provides practical benefits to concrete, such as a gain in long-term strength, reduced hydration heat, improved resistance to chloride, and enhanced workability. The mix proportion used in this study has been developed based on the related research results by the authors [16]. To determine material properties of concrete, three cylindrical specimens (100 mm × 200 mm) were made and cured in moisture condition for 28 days with 23 ∘ C ± 3.…”

Section: Test Parameters and Specimen Fabricationmentioning

confidence: 99%

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

Yoo

Choi

2017

Advances in Materials Science and Engineering

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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.

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Section: Test Parameters and Specimen Fabricationmentioning

confidence: 99%