축력을 받는 바이오차 섬유보강 철근 콘크리트 부재의 휨-압축 거동 특성에 관한 실험 연구

초록

This study evaluated the flexural behavior of reinforced concrete members as a function of biochar replacement and axial load. The experimental variables were biochar replacement ratios (0%, 5%, and 10%) and axial loads (0%, 10%, and 20%). Nine specimens were fabricated. All specimens were tested during flexural loading while maintaining a constant axial load. The load–deflection response, crack patterns, and characteristic points (yield, peak, and ultimate load) were analyzed. The results revealed that increasing the axial load enhanced the initial stiffness, yield, and peak loads, whereas it reduced the deformation capacity and durability factor. In addition, increasing the biochar replacement ratio decreased the initial stiffness and peak load, resulting in earlier flexural cracking.

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