Torsional Strength of Recycled Coarse Aggregate Reinforced Concrete Beams
Ju H. Serik A.
March 2023MDPI
CivilEng
2023#4Issue 155 - 64 pp.
This study discusses the torsional capacity of recycled coarse aggregate (RCA) reinforced concrete beams under pure torsion based on the experimental findings available in the literature. The experimental data on RCA specimens were collected and compared with the conventional concrete specimens with key variables, such as compressive strength and longitudinal and transverse reinforcement ratios, as those variables affect the torsional capacity of reinforced concrete beams. Overall, the database consisted of experimental results from 30 RCA specimens and 256 natural coarse aggregate (NCA) specimens. The result shows that specimens with a 100 % replacement ratio have the lowest strength. In addition, as the structural mechanism of torsion is similar to the shear mechanism in reinforced concrete beams, a comparative analysis was performed with RCA specimens subjected to shear force. It was concluded that the RCA has a similar effect in strength reduction for the specimens subjected to torsion or shear with a 100% replacement ratio. However, further study and experimental evidence are required to confirm the applicability of the recycled aggregate to produce and design the structural members.
natural coarse aggregate , recycled coarse aggregate , torsional cracking strength , torsional strength
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School of Architecture and Design Convergence, Hankyong National University, 327 Jungang-ro, Gyeonggi, Anseong, 17579, South Korea
Department of Civil and Environmental Engineering, School of Engineering and Digital Sciences, Nazarbayev University, 53 Kabanbay Batyr Avenue, Astana, 010000, Kazakhstan
School of Architecture and Design Convergence
Department of Civil and Environmental Engineering
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