Manso-Morato Javier, Hurtado-Alonso Nerea, Revilla-Cuesta Víctor, Ortega-López Vanesa
Department of Civil Engineering, Escuela Politécnica Superior, University of Burgos, c/ Villadiego s/n, 09001, Burgos, Spain.
Department of Construction, Escuela Politécnica Superior, University of Burgos, c/ Villadiego s/n, 09001, Burgos, Spain.
J Environ Manage. 2025 Jan;373:123995. doi: 10.1016/j.jenvman.2024.123995. Epub 2025 Jan 2.
The management of end-of-life wind-turbine blades in the coming years will be necessary, as a clear solution for their recycling is yet to be found due to their complex composition. The suitability of their mechanical recycling is therefore evaluated in this paper, obtaining Raw-Crushed Wind-Turbine Blade (RCWTB) for subsequent incorporation in high amounts of up to 10% vol. in concrete, replacing the aggregates to achieve Fiber-Reinforced Concrete (FRC). Compressive strength levels of 40 MPa were at all times reached, although with steadily decreasing elastic moduli, properties that could be precisely related by regression using a hardened-density correction. Besides, tensile splitting strength increased by 0.03 MPa per 1% RCWTB and Poisson's coefficient was reduced, while maintaining flexural strength levels. Finally, life cycle assessment showed lower global warming potential for mixes with RCWTB, even compared to other FRC mixes, as the contents related to high-emitting raw materials of FRC were reduced. The results were promising and reveal a path towards greater sustainability of the wind-energy sector in alliance with the concrete industry.
由于风力涡轮机叶片的成分复杂，目前尚未找到明确的回收解决方案，因此未来几年对其进行报废管理将是必要的。本文因此评估了其机械回收的适用性，获得了粗碎风力涡轮机叶片（RCWTB），以便随后以高达10%体积分数的大量掺入混凝土中，取代骨料以制成纤维增强混凝土（FRC）。尽管弹性模量不断下降，但始终能达到40MPa的抗压强度水平，这些性能可以通过使用硬化密度校正的回归精确关联。此外，每1%的RCWTB，劈裂抗拉强度提高0.03MPa，泊松系数降低，同时保持抗弯强度水平。最后，生命周期评估表明，与其他FRC混合料相比，含RCWTB的混合料的全球变暖潜能值更低，因为FRC中高排放原材料的含量降低了。结果很有前景，揭示了一条风能行业与混凝土行业联合实现更大可持续性的道路。
