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Effects of frost-damaged reinforced concrete beams on their impact resistance behavior
Highlights Impact loading resistance behavioral tests were performed on frost-damaged RC beams. Beams underwent freezing-thawing and compressive strengths were quantified. The influences of the frost damage on the deflection of the RC beam were small. The frost degradation area of the RC beam was damaged by the impact of the load. The degraded bottom cover concrete peeled off during elastic stress wave propagation.
Abstract Impact loading experiments were conducted to clarify the impact resistance behavior of frost-damaged reinforced concrete (RC) beams. The load-bearing performance and their response deflections were evaluated based on the energy conservation concept. The experimental results indicated that 1) when frost deterioration occurred on the top face, the compressive failure of the top concrete was significant; and the response deflection increased, and 2) when frost deterioration occurred at the bottom face, the response waveform was almost identical to that generated when no deterioration occurred; however, the bottom cover concrete peeled off during elastic stress wave propagation.
Effects of frost-damaged reinforced concrete beams on their impact resistance behavior
Highlights Impact loading resistance behavioral tests were performed on frost-damaged RC beams. Beams underwent freezing-thawing and compressive strengths were quantified. The influences of the frost damage on the deflection of the RC beam were small. The frost degradation area of the RC beam was damaged by the impact of the load. The degraded bottom cover concrete peeled off during elastic stress wave propagation.
Abstract Impact loading experiments were conducted to clarify the impact resistance behavior of frost-damaged reinforced concrete (RC) beams. The load-bearing performance and their response deflections were evaluated based on the energy conservation concept. The experimental results indicated that 1) when frost deterioration occurred on the top face, the compressive failure of the top concrete was significant; and the response deflection increased, and 2) when frost deterioration occurred at the bottom face, the response waveform was almost identical to that generated when no deterioration occurred; however, the bottom cover concrete peeled off during elastic stress wave propagation.
Effects of frost-damaged reinforced concrete beams on their impact resistance behavior
Kurihashi, Yusuke (author) / Konno, Hisashi (author) / Hama, Yukio (author)
2020-12-17
Article (Journal)
Electronic Resource
English
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