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Title |
Shear Strength of Concrete Beams According to Biochar Replacement Ratio
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Authors |
여남구(Nam-Goo Yeo) ; 하니프, 무함마드 로샹(Muhammad Roshaan Hanif) ; 서수연(Soo-Yeon Seo) ; 윤현도(Hyun-Do Yun) ; 최원창(Won-Chang Choi) ; 석승욱(Seung-Wook Seok) |
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DOI |
https://doi.org/10.4334/JKCI.2026.38.3.355 |
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Keywords |
목질계 바이오차; 철근 콘크리트 보; 치환율; 전단경간비; 전단강도 wood-based biochar; reinforced concrete beam; replacement ratio; shear span-to-depth ratio; shear strength |
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Abstract |
This study experimentally investigated the shear strength of reinforced concrete beams incorporating wood-based biochar as a partial replacement for cement. Four specimens were fabricated with biochar replacement ratios of 0 % and 5 % and shear span-to-depth ratios of 1.5 and 2.5. Experimental results showed that the porous structure of the biochar reduced the compressive strength of the concrete, thereby reducing the shear strength of the beams. Shear testing of beams without shear reinforcement resulted in shear failures in all specimens, with shear crack angles ranging between 30 and 40 degrees. When compared with design standard prediction values, the current standard equations were found to appropriately predict the experimental strengths of specimens.
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