RT info:eu-repo/semantics/article
T1 Deepening the effect of selectively crushed wind-turbine blade on the dimensional stability and high-temperature resistance of concrete
A1 Revilla Cuesta, Víctor
A1 Skaf Revenga, Marta
A1 Manso Morato, Javier
A1 Hurtado Alonso, Nerea
A1 Manso Villalaín, Juan Manuel
K1 Selectively crushed wind-turbine blade
K1 Concrete
K1 Dimensional stability
K1 Accelerated aging
K1 Thermal shock
K1 Hormigón-Ensayos
K1 Concrete-Testing
K1 Materiales de construcción
K1 Building materials
AB Selectively Crushed Wind-Turbine Blade (SCWTB) is obtained through knife crushing of panels from wind-turbine blades. Two thirds of SCWTB weight consist of GFRP-composite fibers, which may improve both dimensional stability and high-temperature resistance of concrete. In this investigation, the evaluation of such aspects in concrete containing 1.5 %, 3.0 %, 4.5 % and 6.0 % SCWTB by volume is addressed. For this purpose, plastic shrinkage, drying shrinkage, total shrinkage, and thermal expansion were evaluated regarding dimensional stability, while resistance to high temperatures was assessed through accelerated-aging and thermal-shock tests. The results revealed that 6.0 % SCWTB reduced by half concrete plastic shrinkage, and total shrinkage by 40–50 % at 7 days and by 10–20 % at 91 days. Furthermore, the initial thermal strain was decreased from SCWTB contents of 3.0 %, which in turn reduced the linear thermal expansion coefficient, which had a value of 1.49·10−5 °C−1 in concrete with 6.0 % SCWTB. Finally, concrete with SCWTB maintained adequate compressive strength after accelerated aging and air-heating thermal shock, reaching values above 40 MPa, and halved the loss of flexural strength when added in a content of 6.0 %. Scanning electron microscopy revealed that high temperatures caused micro-cracks that started in weak zones and propagated along the glass fibers of GFRP, but the bond between the cementitious matrix and the GFRP-composite fibers was ideal, so the matrix fractured instead of the fibers slipping when loading. The improvements induced by SCWTB were statistically significant, so this waste can be considered a value-added material in terms of the concrete behavior analyzed.
PB Elsevier
SN 2352-7102
YR 2025
FD 2025-10
LK https://hdl.handle.net/10259/10707
UL https://hdl.handle.net/10259/10707
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 17-abr-2026