2026-06-19T13:10:33Zhttps://riubu.ubu.es/oai/request

oai:riubu.ubu.es:10259/79962023-11-14T01:05:44Zcom_10259_6171com_10259_5086com_10259_2604col_10259_6172

Revilla Cuesta, Víctor Shi, Jin-yan Skaf Revenga, Marta Ortega López, Vanesa Manso Villalaín, Juan Manuel 2023-11-13T08:05:40Z 2023-11-13T08:05:40Z 2022-12 2666-1659 http://hdl.handle.net/10259/7996 10.1016/j.dibe.2022.100097 Non-destructive tests that cause no damage to concrete components can be used in rehabilitation works to determine concrete mechanical properties, such as the modulus of elasticity. In this paper, models are presented to predict the modulus of elasticity of Self-Compacting Concrete (SCC) with Recycled Aggregate (RA) and slag cement through the hammer rebound index and ultrasonic pulse velocity. Simple- and multiple-regression models were developed to estimate the modulus of elasticity according to the monotonic relation between variables shown by Spearman correlations. In these models, the modulus of elasticity was always inversely proportional to the square root of the non-destructive property under consideration, and the hardened density raised to the power of 2.5 as correction factor always increased estimation accuracy and robustness. The multiple-regression model with density correction yielded the most precise estimations of the elastic modulus with deviations below ±10% and ±20% in 82% and 94% of cases, respectively. This research work was supported by the Spanish Ministry of Universities, MICINN, AEI, EU, ERDF and NextGenerationEU/PRTR [grant numbers PID2020-113837RB-I00; 10.13039/501100011033; TED2021-129715B–I00; FPU17/03374]; the Junta de Castilla y León (Regional Government) and ERDF [grant number UIC-231]; and, finally, the University of Burgos [grant number SUCONS, Y135.GI]. eng Elsevier Developments in the Built Environment. 2022, V. 12, 100097 https://doi.org/10.1016/j.dibe.2022.100097 Attribution-NonCommercial-NoDerivatives 4.0 Internacional http://creativecommons.org/licenses/by-nc-nd/4.0/ info:eu-repo/semantics/openAccess Self-compacting concrete Recycled aggregate Ground granulated blast-furnace slag Aggregate powder Modulus of elasticity Non-destructive testing Ingeniería civil Materiales de construcción Civil engineering Building materials Non-destructive density-corrected estimation of the elastic modulus of slag-cement self-compacting concrete containing recycled aggregate info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Developments in the Built Environment 12