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Title |
Flexural Behavior of Reinforced Recycled Aggregate Concrete Beams
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Authors |
송선화 ; 최기선 ; 유영찬 ; 김긍환 ; 윤현도 |
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Keywords |
순환굵은골재 ; 순환잔골재 ; 강도특성 ; 치환율 ; 건설폐기물 recycled coarse aggregate ; recycled fine aggregate ; strength properties ; replacement level ; construction and demolition waste |
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Abstract |
These days the amount of demolished concrete waste has been increasing due to reconstruction and redevelopment of aged buildings. So the use of recycled aggregates is recommended to solve environmental problems. Some investigations have been carried out to study the flexural behavior of reinforced concrete beams with recycled aggregates. But these have some limitation due to the use of low quality recycled aggregates and small-scale specimens in the laboratory. The purpose of this experimental study is to evaluate the flexural behavior of simply supported RC beams subjected to four-point monotonic loading and made with recycled aggregates. Seven full-scale RC beams were manufactured with different replacement level of recycled aggregates. The main parameters of the study are combination of aggregates. From the test results, the flexural behavior of the beam is described in terms of crack patterns and failure modes. And the flexural strength of RC beam with different types of recycled coarse aggregates and recycled fine aggregates is compared with the provision of KCI code.
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