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oai:riubu.ubu.es:10259/80582023-11-21T01:05:24Zcom_10259_6171com_10259_5086com_10259_2604col_10259_6172

Effect of fine recycled concrete aggregate on the mechanical behavior of self-compacting concrete Revilla Cuesta, Víctor Ortega López, Vanesa Skaf Revenga, Marta Manso Villalaín, Juan Manuel Self-compacting concrete Recycled concrete aggregate Flowability Mechanical performance at different curing ages Stress-strain curves Desing values Ingeniería civil Materiales de construcción Civil engineering Building materials The high flowability of Self-Compacting Concrete (SCC) is achieved by adding large amounts of fine aggregate. Therefore, the addition of fine Recycled Concrete Aggregate (RCA) in this type of concrete can very noticeably change its behavior. SCCs with different percentages of fine RCA (0%, 25%, 50%, 75%, and 100%) and 100% coarse RCA were manufactured in this study, to evaluate their performance, and to analyze the effect of fine RCA in an SCC when a high amount of coarse RCA is also added. Both the fresh properties (flowability, density, and air content) and their mechanical behavior (strengths, non-destructive tests, stress–strain curves, and Poisson coefficient) at different curing ages were studied. These mechanical properties were compared with the values calculated using the formulas from two of the most common structural design standards. High values of strength and modulus of elasticity were obtained up to a fine RCA content of 50%. Additionally, any increase in fine RCA increased flowability and elastic and plastic deformability of the SCC. The theoretical values overestimated the experimental ones by around 25%. From the mechanical point of view, SCC with up to 50% fine RCA could be used for structural applications, although service requirements regarding deformability recommend that its content should be limited to 25%. The authors wish to express their gratitude to: the Spanish Ministry MCI, AEI, EU and ERDF [grant number FPU17/03374]; the Junta de Castilla y León (Regional Government) and ERDF [grant numbers UIC-231, BU119P17]; Youth Employment Initiative (JCyL) and ESF [grant number UBU05B_1274]; and finally, the University of Burgos [grant numbers SUCONS, Y135.GI]. 2023-11-20T08:30:52Z 2023-11-20T08:30:52Z 2020-12 info:eu-repo/semantics/article info:eu-repo/semantics/acceptedVersion 0950-0618 http://hdl.handle.net/10259/8058 10.1016/j.conbuildmat.2020.120671 eng Construction and Building Materials. 2020, V. 263, 120671 https://doi.org/10.1016/j.conbuildmat.2020.120671 Attribution-NonCommercial-NoDerivatives 4.0 Internacional http://creativecommons.org/licenses/by-nc-nd/4.0/ info:eu-repo/semantics/openAccess Elsevier https://riubu.ubu.es/bitstream/10259/8058/4/Revilla-cbm_2020.pdf.jpg Hispana TEXT http://creativecommons.org/licenses/by-nc-nd/4.0/ RIUBU. Repositorio Institucional de la Universidad de Burgos http://hdl.handle.net/10259/8058