2026-04-17T11:43:26Zhttps://riubu.ubu.es/oai/request

oai:riubu.ubu.es:10259/99352025-01-16T01:05:40Zcom_10259_6171com_10259_5086com_10259_2604col_10259_6172

Ortega López, Vanesa Faleschini, Flora Hurtado Alonso, Nerea Manso Morato, Javier Revilla Cuesta, Víctor Raw-crushed wind-turbine blade Concrete Stress-strain curve Transverse deformation Load-deflection curve Deformability under indirect-tensile stresses End-of-life wind-turbine blades undergo non-selective crushing to produce Raw-Crushed Wind-Turbine Blade (RCWTB), which can be recycled as a raw material in concrete. RCWTB contains fibers from glass fiber-reinforced polymer that can add ductility and load-bearing capacity to concrete. Concrete mixes with percentage additions of between 0.0 % and 6.0 % RCWTB by volume are produced to analyze their compressive stress–strain performance, their deflection under bending forces, and their deformability under indirect-tensile stresses. Higher RCWTB contents increased deformability in the longitudinal direction under compression, the concrete material absorbing energy levels that were up to 111.4 % higher, even though additions of only 6.0 % RCWTB were sufficient to strengthen the load-bearing capacity. RCWTB fiber stitching effect was most noticeable in the transverse direction under compression, as it reduced elastic deformability and failure strain, removed the yield step caused by vertical-splitting cracking, and increased the fracture strain by up to 94.4 %. With regard to deflection, RCWTB fibers conditioned concrete compliance at advanced ages without any dependence on the modulus of elasticity, and percentage additions from 3.0 % provided load-bearing capacity. This advantage was also noted in indirect-tensile stresses for 6.0 % RCWTB. In summary, RCWTB successfully increased the ductility and load-bearing capacity of concrete per unit strength and carbon footprint. 2025-01-15 2025-01-15 2024 info:eu-repo/semantics/article 0263-8223 http://hdl.handle.net/10259/9935 10.1016/j.compstruct.2024.118170 eng Composite Structures. 2024, V. 340, 118170 https://doi.org/10.1016/j.compstruct.2024.118170 http://creativecommons.org/licenses/by-nc-nd/4.0/ info:eu-repo/semantics/openAccess Attribution-NonCommercial-NoDerivatives 4.0 Internacional Elsevier