2026-07-31T01:00:54Zhttps://riubu.ubu.es/oai/request

oai:riubu.ubu.es:10259/99402025-01-16T01:05:39Zcom_10259_6171com_10259_5086com_10259_2604col_10259_6172

Hernando Revenga, Manuel Revilla Cuesta, Víctor Chica Páez, José Antonio Ortega López, Vanesa Manso Villalaín, Juan Manuel 2025-01-15T17:24:01Z 2025-01-15T17:24:01Z 2024 2076-3417 http://hdl.handle.net/10259/9940 10.3390/app14219946 2076-3417 The production of raw-crushed wind-turbine blade (RCWTB) and its addition to conventionally designed self-compacting Concrete (SCC) enable us to provide a second life to wind-turbine blades. However, SCC containing RCWTB must show proper fresh behavior, an aspect evaluated in this paper both experimentally and through simulations based on computational fluid dynamics (CFD) for RCWTB additions up to 3.0% by volume. In experimental terms, RCWTB reduced the flowability and passing ability of SCC, and slowed SCC flow, although the performance of SCC with 1.5% RCWTB was adequate under free-flow conditions. In terms of modeling, RCWTB did not impact yield stress and increased plastic viscosity. CFD modeling under free flow, regardless of the presence or not of obstacles simulating concrete reinforcement, was successful, especially in the long term. Nevertheless, the modeling of the passing ability was not accurate; precision could be improved by simulating the effect of the individual GFRP fibers within the SCC flow. Finally, the mechanical properties of SCC were negatively impacted by RCWTB, the stitching effect of the GFRP fibers not being effective in an SCC with a conventional design. A specific SCC design when adding RCWTB is therefore needed to advance in the use of this waste in this concrete type. This research was funded by the MICIU, AEI, EU, ERDF and NextGenerationEU/PRTR [grant numbers PID2023-146642OB-I00; 10.13039/501100011033; TED2021-129715B-I00]; the Junta de Castilla y León (Regional Government) and ERDF [grant number UIC-231; BU033P23]; and, finally, the University of Burgos [grant number SUCONS, Y135.GI]. application/pdf eng MDPI Applied Sciences. 2024, V. 14, n. 21, 9946 https://doi.org/10.3390/app14219946 Atribución 4.0 Internacional http://creativecommons.org/licenses/by/4.0/ info:eu-repo/semantics/openAccess Raw-crushed wind-turbine blade Self-compacting concrete Flowability Passing ability Computational fluid dynamics Bingham equation Ingeniería civil Civil engineering Materiales de construcción Building materials Hormigón-Ensayos Concrete-Testing Initial Approach to Self-Compacting Concrete with Raw-Crushed Wind-Turbine Blade: Fresh, CFD and Mechanical Analysis info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Applied Sciences 14 21 9946