RT info:eu-repo/semantics/article
T1 Evaluation of the durability of structural concrete with low contents of Raw-Crushed Wind Turbine Blade
A1 Hurtado Alonso, Nerea
A1 Bravo Díez, Pedro Miguel
A1 de Brito, Jorge
A1 Revilla Cuesta, Víctor
A1 Skaf Revenga, Marta
K1 Raw-crushed wind-turbine blades (RCWTB)
K1 Concrete
K1 Durability
K1 Thermal conductivity
K1 Shrinkage
K1 Environmental impact
K1 Materiales de construcción
K1 Building materials
K1 Hormigón-Ensayos
K1 Concrete-Testing
AB The raw crushing of wind turbine blades that have reached the end of their service life has led to the emergence of a waste material known as Raw-Crushed Wind Turbine Blade (RCWTB). Its heterogeneous composition primarily consists of fibres of glass fibre-reinforced polymer (GFRP), polymeric and balsa wood particles. This study explores the incorporation of RCWTB at low contents in concrete mixes, with a focus on its effects on durability. To this end, four concrete mixes were prepared with RCWTB contents of 0 %, 0.5 %, 1.25 %, and 2.5 %. After fresh-state and strength characterization, the mixes were evaluated for water absorption, chloride penetration resistance, carbonation resistance, thermal conductivity and shrinkage. In terms of slump and compressive strength, the incorporation of RCWTB resulted in moderate reductions in both properties. Nonetheless, all mixes reached 28-day strength values widely exceeding 30 MPa, meeting structural performance criteria. Water absorption, chloride penetration, and carbonation depth increased with RCWTB content due to the presence of porous particles within RCWTB, reaching a maximum at 1.25 % RCWTB, then stabilizing for 2.5 % RCWTB. Conversely, thermal conductivity decreased with RCWTB content due to the low-density particles of balsa wood, also stabilizing beyond 1.25 % RCWTB. All these properties followed a logarithmic evolution with the RCWTB content. Finally, the stiffness provided by GFRP fibres when incorporating 1.25 % and 2.5 % of RCWTB slightly reduced concrete shrinkage. These durability findings allow identifying potential fields of application of concrete containing low RCWTB amounts, such as façade cladding elements, interior beams and columns of buildings, or pavements.
PB Elsevier
SN 0950-0618
YR 2025
FD 2025-07
LK http://hdl.handle.net/10259/10516
UL http://hdl.handle.net/10259/10516
LA eng
NO This research work was supported by the Spanish Ministry of Universities, MICIU, AEI, EU, ERDF and NextGenerationEU/PRTR [grant numbers PID2023–146642OB-I00; 10.13039/501100011033; TED2021–129715B-I00]; the Junta de Castilla y Leon ´ (Regional Government) and ERDF [grant number UIC-231; BU033P23; BU066–22]; and the University of Burgos [grant number SUCONS, Y135.GI]. The authors also acknowledge the support of the Foundation for Science and Technology, through funding UIDB/04625/2020, CERIS Research Centre and Instituto Superior T´ecnico. Open access funding provided by University of Burgos.
DS Repositorio Institucional de la Universidad de Burgos
RD 19-abr-2026