RT info:eu-repo/semantics/article
T1 Deformational and energy-absorption performance of low-strength structural concrete with joint additions of raw-crushed wind-turbine blade and coarse recycled aggregate
A1 Manso Morato, Javier
A1 Hurtado Alonso, Nerea
A1 Revilla Cuesta, Víctor
A1 Serrano López, Roberto
A1 Ortega López, Vanesa
K1 Low-strength
K1 Coarse recycled aggregate
K1 Raw-crushed wind-turbine blades (RCWTB)
K1 Load-deflection bending curve
K1 Stress-strain compression curve
K1 Transverse deformability
K1 Ingeniería civil
K1 Civil engineering
K1 Materiales de construcción
K1 Building materials
K1 Materiales-ensayos
K1 Materials-Testing
AB Raw-Crushed Wind-Turbine Blade (RCWTB) is yielded through non-selective cutting and crushing of wind-turbine blades,which has a high content of fiberglass-composite fibers. These fibers can potentially increase the energy-absorption capacity and ductility of concrete, and even partially compensate for the higher brittleness because of the addition of CoarseRecycled Aggregate (CRA). This paper therefore analyzes the behavior under monotonic compressive and bending loading of low-strength structural concrete (target compressive strength of 25 MPa) produced with CRA amounts of 50% and100% and RCWTB contents of 0% and 10%. Both the under-bending load-deflection curves and the under-compressionstress-strain curves in both the longitudinal and transverse directions showed that RCWTB increased concrete deformability. Thus, it decreased the elastic stiffness and increased the fracture and peak strains and deflections, improvingthe load-bearing capacity. Compressive and flexural strengths were not adversely affected by RCWTB, so that a higherdeformability augmented the absorbed energy. This gain was as high as 469% when a bending load was applied to lowstrength concrete with 50% CRA. The pre-failure beneficial effect of RCWTB was more noticeable for a CRA content of100% in the under-compression longitudinal stress-strain performance, due to the higher tensile stress supported by theRCWTB fibers prior to failure. However, the most suitable CRA content in the under-bending load-deflection performanceand the under-compression stress-strain behavior in the transverse direction was 50%, which limited the micro-cracking ofthe cementitious matrix. The interaction between both wastes was statistically key to define the deformational and energyabsorption behavior of the low-strength structural concrete made with CRA and RCWTB simultaneously.
PB Springer
SN 2522-5731
YR 2025
FD 2025-03
LK https://hdl.handle.net/10259/10969
UL https://hdl.handle.net/10259/10969
LA eng
NO This research work was supported by MICIU, AEI, EU, ERDF and NextGenerationEU/PRTR [grant numbers PID2020-113837RB-I00; PID2023-146642OB-I00; https://doi.org/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]; and, finally, the University of Burgos [grant number SUCONS, Y135.GI].
DS Repositorio Institucional de la Universidad de Burgos
RD 05-may-2026