RT info:eu-repo/semantics/article
T1 Analysis of raw-crushed wind-turbine blade as an overall concrete addition: Stress–strain and deflection performance effects
A1 Ortega López, Vanesa
A1 Faleschini, Flora
A1 Hurtado Alonso, Nerea
A1 Manso Morato, Javier
A1 Revilla Cuesta, Víctor
K1 Raw-crushed wind-turbine blade
K1 Concrete
K1 Stress-strain curve
K1 Transverse deformation
K1 Load-deflection curve
K1 Deformability under indirect-tensile stresses
K1 Ingeniería civil
K1 Civil engineering
K1 Materiales de construcción
K1 Building materials
K1 Hormigón-Ensayos
K1 Concrete-Testing
AB 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.
PB Elsevier
SN 0263-8223
YR 2024
FD 2024
LK http://hdl.handle.net/10259/9935
UL http://hdl.handle.net/10259/9935
LA eng
NO This research work was supported by the Spanish Ministry of Universities within the framework of the State Program for the Promotion of Talent and its Employability in the 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; FPU21/04364]; the Junta de Castilla y León (Regional Government) and ERDF [grant number UIC-231; BU033P23; BU066-22]; the University of Burgos [grant number SUCONS, Y135.GI]; and, finally, the University of Padova.
DS Repositorio Institucional de la Universidad de Burgos
RD 21-ene-2025