2026-09-06T19:01:54Zhttps://riubu.ubu.es/oai/request

oai:riubu.ubu.es:10259/99332025-01-16T01:05:48Zcom_10259_6171com_10259_5086com_10259_2604col_10259_6172

Revilla Cuesta, Víctor Faleschini, Flora Pellegrino, Carlo Skaf Revenga, Marta Ortega López, Vanesa 2025-01-15T13:07:13Z 2025-01-15T13:07:13Z 2024 2666-1659 http://hdl.handle.net/10259/9933 10.1016/j.dibe.2024.100374 Raw-Crushed Wind-Turbine Blade (RCWTB) is a novel material from the recycling and non-selective crushing of wind-turbine blades composed of fiberglass-composite fibers and polyurethane and balsa-wood particles. This research evaluates for the first time the water-transport and porosity behaviors of concrete with RCWTB through water-penetration-under-pressure, full-immersion water-absorption, capillarity-water-absorption and mercury-intrusion-porosimetry tests. RCWTB contents of 1.5%, 3.0%, 4.5%, and 6.0% were considered. All the RCWTB concretes yielded adequate results for depth of water penetration under pressure and water-absorption rate, although this waste slightly worsened both properties. RCWTB also increased the proportion of pores between 100 and 250 nm in size, which increased total and capillary effective porosities to maximum values of 13.54% and 13.51%, respectively, and sharply decreased the compression-related mechanical properties of concrete. Capillary effective porosity included the porosity effect of balsa-wood particles on concrete mechanical performance, so it allowed estimating the compression-related mechanical properties with a deviation lower than ±10%. This research work was supported by the Spanish Ministry of Universities within the framework of the State Program for the Promotion of Talent and Employability in R + D + i, State Mobility Subprogram, of the State Plan for Scientific and Technical Research and Innovation 2021–2023 [CAS22/00013]; MICINN, AEI, EU, ERDF and NextGenerationEU/PRTR [grant numbers PID2020-113837RB-I00; PID2023-146642OB-I00; 10.13039/501100011033; TED2021-129715B–I00]; the Junta de Castilla y León (Regional Government) and ERDF [grant number UIC-231; BU033P23]; the University of Burgos [grant number SUCONS, Y135.GI]; and, finally, the University of Padova. application/pdf eng Elsevier Developments in the Built Environment. 2024, V. 17, 100374 https://doi.org/10.1016/j.dibe.2024.100374 Attribution-NonCommercial-NoDerivatives 4.0 Internacional http://creativecommons.org/licenses/by-nc-nd/4.0/ info:eu-repo/semantics/openAccess Raw-crushed wind-turbine blade Porous balsa wood Concrete Water absorption Effective porosity Porosity-based strength estimation Ingeniería civil Materiales de construcción Hormigón-Ensayos Civil engineering Building materials Concrete-Testing Water transport and porosity trends of concrete containing integral additions of raw-crushed wind-turbine blade info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Developments in the Built Environment 17 100374