RT info:eu-repo/semantics/article
T1 Long-term mechanical performance of concrete with high amounts of wind turbine blade mixed waste: Analysis of temporal evolution mechanisms
A1 Manso Morato, Javier
A1 Hurtado Alonso, Nerea
A1 Serrano López, Roberto
A1 Revilla Cuesta, Víctor
A1 Ortega López, Vanesa
K1 Fiber-reinforced concrete
K1 Raw-crushed wind-turbine blade
K1 Temporal strength development mechanism
K1 Abrasion
K1 Thermal conductivity
K1 Materiales de construcción
K1 Building materials
K1 Hormigón
K1 Concrete
K1 Resistencia de materiales
K1 Strength of materials
AB Fiber-Reinforced Concrete (FRC) was manufactured by the addition of high percentages of mechanically recycled wind-turbine blades, known as Raw-Crushed Wind-Turbine Blade (RCWTB). This sustainable material was added as aggregate replacement up to 10 % vol., while keeping the cement content equal for all mixes, and the effects on several fields were evaluated. First, strength (compressive, tensile splitting and flexural testing) and stiffness were evaluated at 7, 28, 90 and 180 days of age. Results showed that low RCWTB contents improved compressive (above 60 MPa) and tensile strengths (over 6.50 MPa under bending) due to enhanced matrix compactness. Nevertheless, the large proportions of deformable particles when using high RCWTB contents slightly hindered mechanical performance. Second, temporal strength development mechanism was evaluated through Scanning Electron Microscopy (SEM) on specimens that underwent mechanical testing and explained through schematics by the authors. This analysis revealed that the porous particles of RCWTB, acting as water reservoirs, accelerated matrix hydration and improved Interfacial Transition Zones (ITZ) around the Glass Fiber-Reinforced Polymer (GFRP) fibers of RCWTB, globally enhancing early-age strength. Third, low RCWTB levels improved abrasion resistance (up to 14.73 %), while high contents reduced surface quality but maintained acceptable performance. Finally, thermal conductivity remained stable following RCWTB incorporation at low levels and increased at higher contents (up to 35.75 %) but remained within typical FRC ranges. Therefore, this research ensures proper early-age and long-term overall performance of FRC produced with RCWTB, enhancing sustainability while yielding an improved concrete material suitable for a wide variety of applications.
PB Elsevier
SN 2214-5095
YR 2025
FD 2025-12
LK https://hdl.handle.net/10259/10877
UL https://hdl.handle.net/10259/10877
LA eng
NO This research work was supported by the Spanish Ministry of Science, Innovation and Universities MICIU, AEI, EU, ERDF and NextGenerationEU/PRTR [grant numbers 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]; and, finally, the University of Burgos [grant number SUCONS, Y135.GI].
DS Repositorio Institucional de la Universidad de Burgos
RD 05-may-2026