바이오차로 치환된 콘크리트 보의 전단강도

초록

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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