2026-05-07T23:57:04Zhttps://riubu.ubu.es/oai/request

oai:riubu.ubu.es:10259/108762025-09-16T00:05:36Zcom_10259_6171com_10259_5086com_10259_2604col_10259_6172

Low-Strength Concrete with Raw-Crushed Wind Turbine Blade and Coarse Recycled Aggregate Hurtado Alonso, Nerea Manso Morato, Javier Revilla Cuesta, Víctor Skaf Revenga, Marta Manso Villalaín, Juan Manuel Coarse recycled aggregate Glass fiber–reinforced polymer Wind turbine blade Concrete Mechanical performance Flexural strength Materiales de construcción Hormigón Resistencia de materiales Building materials Concrete Strength of materials Nonselective crushing of wind turbine blades results in raw-crushed wind turbine blade (RCWTB), a material that can be used in concrete production. Wind farm decommissioning can also generate coarse recycled aggregate (CRA) from the demolition of wind turbine concrete footings. This paper proposes a first approach for the joint management of both wastes through their simultaneous use in low-strength concrete, with a target compressive strength of 25 MPa. Mixes with 50% and 100% CRA, and 0% and 10% RCWTB as a cement addition, were designed, with the effect of CRA content not being statistically significant, to analyze its interaction with RCWTB. The results showed that, on the one hand, RCWTB reduced strength and stiffness under compression by a maximum of 9%–15%, although the target strength was achieved in all mixes; the presence of balsa wood and polymer particles in RCWTB, with high flexibility, could explain these reductions. On the other hand, the stitching effect of the glass fiber–reinforced polymer fibers present in RCWTB largely improved the bending-tensile mechanical properties. For example, flexural strength was almost doubled (from 2.51 to 4.99 MPa) when RCWTB was combined with 50% CRA. Additionally, RCWTB reduced both the embodied carbon and cost of low-strength concrete, resulting in doubled flexural-strength efficiency (flexural strength per unit of embodied carbon and cost), regardless of the CRA content. Overall, the best interaction was observed with 10% RCWTB and 50% RCA. Therefore, this study opens the possibility of simultaneously using RCWTB and CRA in low-strength concrete for applications where bending stresses predominate. This research work was supported by the Ministerio de Ciencia, Innovación y Universidades (MICIU), Agencia Estatal de Investigación (AEI), European Union (EU), European Regional Development Fund (ERDF), and NextGenerationEU/PRTR (Grant Nos. PID2020-113837RB-I00, PID2023-146642OB-I00, 10.13039/501100011033, TED2021-129715B-I00, and FPU21/04364); the Junta de Castilla y León (Regional Government) and ERDF (Grant Nos. UIC-231, BU033P23, and BU066-22), and, finally, the University of Burgos (Grant No. SUCONS, Y135.GI). Authors Nerea Hurtado-Alonso and Javier Manso-Morato contributed equally to this paper. 2025-09-15T11:38:42Z 2025-09-15T11:38:42Z 2025-10 info:eu-repo/semantics/article info:eu-repo/semantics/acceptedVersion 0899-1561 https://hdl.handle.net/10259/10876 10.1061/JMCEE7.MTENG-20380 1943-5533 eng Journal of Materials in Civil Engineering. 2025, V. 37, n. 10, 04025373 https://doi.org/10.1061/JMCEE7.MTENG-20380 info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020/PID2020-113837RB-I00/ES/ESTUDIO A ESCALA REAL DE HORMIGONES SOSTENIBLES, HIDRAULICOS Y BITUMINOSOS, DE ALTAS PRESTACIONES, FABRICADOS CON RESIDUOS SIDERURGICOS Y DE CONSTRUCCION/ info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica, Técnica y de Innovación 2021-2023/PID2023-146642OB-I00/ES/Análisis integral de hormigones, con triturado de palas de aerogeneradores y árido reciclado de sus cimentaciones, diseñados para la industria de la prefabricación/WINDPRE/ info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica, Técnica y de Innovación 2021-2023/TED2021-129715B-I00/ES/Reciclaje de palas y cimentaciones de aerogeneradores en hormigón para nuevos parques eólicos de alta potencia/ info:eu-repo/grantAgreement/MIU/Plan Estatal de Investigación Científica, Técnica y de Innovación 2021-2023/FPU21%2F04364/ES/ info:eu-repo/grantAgreement/Junta de Castilla y León//BU033P23//Reciclaje de palas de aerogenerador para una industria eólica sostenible: estudio del tratamiento en origen y optimización de su contenido en mezclas de hormigón/EOLOOP/ info:eu-repo/grantAgreement/Junta de Castilla y León//BU066-22/ info:eu-repo/grantAgreement/UBU//Y135.GI/ info:eu-repo/semantics/openAccess application/pdf American Society of Civil Engineers