2026-05-07T13:37:20Zhttps://riubu.ubu.es/oai/request

oai:riubu.ubu.es:10259/80592023-11-21T01:05:21Zcom_10259_6171com_10259_5086com_10259_2604col_10259_6172

Revilla Cuesta, Víctor Skaf Revenga, Marta Chica Páez, José Antonio Fuente Alonso, José Antonio de la Ortega López, Vanesa 2023-11-20T08:40:41Z 2023-11-20T08:40:41Z 2020-11 0167-577X http://hdl.handle.net/10259/8059 10.1016/j.matlet.2020.128417 Recycled Concrete Aggregate (RCA) has greater elasticity than natural aggregate, due to the presence of adhered hydrated mortar in the coarse fraction, and mortar particles in the fine fraction. To evaluate this aspect under temperature variations, four Self-Compacting Concretes (SCC) made with 100% coarse and/ or fine RCA were subjected to cyclical temperature variations between 70 C and 20 C and between 15 C and 20 C. The addition of RCA, especially in the coarse fraction, increased the thermal deformability, although the difference tended to decrease with the number of cycles, especially in positive temperature variations. This study concludes that the traditional upper limit of the linear thermal expansion coefficient for concrete (1.210 5 C 1) is also suitable when RCA is incorporated. This work was supported by MCI, AEI, and ERDF [FPU17/03374]; JCyL and ERDF [UIC-231, BU119P17]; JCyL and ESF [UBU05B_1274]; and the University of Burgos [SUCONS, Y135.GI]. eng Elsevier Materials Letters. 2020, V. 278, 128417 https://doi.org/10.1016/j.matlet.2020.128417 Attribution-NonCommercial-NoDerivatives 4.0 Internacional http://creativecommons.org/licenses/by-nc-nd/4.0/ info:eu-repo/semantics/openAccess Recycled concrete aggregate (RCA) Self-compacting concrete (SCC) Cyclical temperature variations Thermal deformability Thermal remaining strain Linear thermal expansion coefficient Ingeniería civil Materiales de construcción Civil engineering Building materials Thermal deformability of recycled self-compacting concrete under cyclical temperature variations info:eu-repo/semantics/article info:eu-repo/semantics/acceptedVersion Materials Letters 278