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Title |
Strength Properties of High-Strength Concrete Piles Using an Industrial by-Product
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Authors |
신경수(Kyoung-Su Shin) ; 임병훈(Byung-Hoon Lim) ; 황선경(Sun-Kyung Hwang) |
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DOI |
https://doi.org/10.11112/jksmi.2020.24.6.85 |
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Keywords |
산업부산물; 고강도 콘크리트; 압축강도; 고로슬래그 미분말 Industrial by-product; High-strength concrete; Compressive strength; Ground granulated blast-furnace slag |
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Abstract |
The necessity for ground reinforcement of structures has been increasing in South Korea because buildings have encountered constructional problems such as inclined structures and collapses caused by earthquakes or differential settlement of the foundations. With regard to a ground reinforcement method, an increasing number of high-strength concrete piles have been used based on their advantages, including a wide range of penetration depth and a high load-bearing capacity. However, problems such as the destruction of a pile head during on-site placement work can occur when the pile has insufficient strength. For this reason, the strength of such piles should be managed more thoroughly. Thus, this study analyzed the strength properties of high-strength concrete piles using blast furnace slag (BFS) powder as a cement replacement, which was generated as an industrial byproduct. The analysis results indicated that the compression strength of the concrete piles increased when 10% to 20% of the cement was replaced with ground granulated blast-furnace slag (GGBS). In addition, the compression strength of the concrete piles was calculated to be 80.6 MPa when 20% of the cement was replaced with GGBS, which was greater by 5% than that of an ordinary Portland cement (OPC) specimen
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