RT info:eu-repo/semantics/article
T1 Strength-based RSM optimization of concrete containing coarse recycled concrete aggregate and raw-crushed wind-turbine blade
A1 Hurtado Alonso, Nerea
A1 Manso Morato, Javier
A1 Revilla Cuesta, Víctor
A1 Skaf Revenga, Marta
K1 Recycled concrete aggregate (RCA)
K1 Raw-crushed wind-turbine blade (RCWTB)
K1 Concrete
K1 Optimization
K1 Response surface method (RSM)
K1 Mechanical strength
K1 Materiales de construcción
K1 Building materials
K1 Hormigón-Ensayos
K1 Concrete-Testing
K1 Resistencia de materiales
K1 Strength of materials
AB Recycled Concrete Aggregate (RCA) and Raw-Crushed Wind-Turbine Blade (RCWTB) are waste materials obtained from decommissioned wind turbines after crushing their foundations and blades, respectively. Their use as raw materials in concrete allows their recycling. RCA increases concrete sustainability, while the fibers of Glass Fiber-Reinforced Polymer (GFRP) in RCWTB (66.8 % wt.) improve its bending performance. Nevertheless, only balanced waste combinations provide an adequate concrete behavior. Following a characterization of concrete in terms of fresh and strength performance, Response Surface Method (RSM) was conducted based on the experimental results to define the optimum waste combinations to reach a concrete strength performance adequate for engineering applications. RSM highlighted the need to limit the RCWTB content to 3 % to reach a compressive strength higher than 45 MPa, while amounts below 3 % and above 7 % would allow obtaining a flexural strength over 5.5 MPa. In both cases, the maximum content of coarse RCA should be 80 %. 70 % coarse RCA and a RCWTB amount between 6 % and 10 % would enable to develop concrete mixes with conventional strengths of 30–40 MPa under compression and 5 MPa under bending. RSM results revealed that RCWTB and their GFRP fibers properly behave in concrete with coarse RCA.
PB Elsevier
SN 0263-8223
YR 2025
FD 2025-02
LK http://hdl.handle.net/10259/10179
UL http://hdl.handle.net/10259/10179
LA eng
NO This research work was supported by the Spanish Ministry of Universities, MICINN, AEI, EU, ERDF and NextGenerationEU/PRTR [grant numbers PID2020-113837RB-I00; 10.13039/501100011033; TED2021-129715 B–I00; PID2023-146642OB-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 10-mar-2025