This article examines the viability of valorizing waste glass fiber-reinforced polymer (GFRP) materials extracted from wind-turbine blades (WWTB) — (WWTB-GFRP) — into concrete. A comprehensive material characterization was carried out and the influence of WWTB-GFRP as powder, aggregate, or fiber on concrete performance was investigated. Cement replacement rates of 10–30% were attempted. Coarse aggregate replacement levels of 33–100% were considered, while fiber addition rates of 1–1.75 vol.% were investigated. Resulting concretes were characterized for their compressive strength and flexural capacity. Resulting concretes were characterized in terms of compressive strength and flexural capacity. Results show that the form at of WWTB-GFRP (as a powder, aggregate, or fiber) significantly impacts the properties of resulting concretes. Thus, while WWTB-GFRP powder leads to substantial increase in the setting time (owing to the wooden content and its associated soluble sugars) as well as to a significant drop in compressive and flexural strengths, it should be noted that mixtures with 10% cement replacement by WWTB-GFRP powder (after removal of wooden content) demonstrated comparable compressive strength as that of the reference mixture (without WWTB-GFRP) at 90 days. When WWTB-GFRP is incorporated in concrete as a fiber reinforcement, an enhancement in flexural capacity of up to 15% was achieved without noticeable drop in compressive strength. Therefore, it is feasible to valorize WWTB-GFRP in concrete to obtain mixtures with comparable long-term compressive strength while achieving higher flexural capacity and contributing to promoting the sustainable development.

本文研究了将从风力涡轮机叶片 (WWTB) — (WWTB-GFRP) — 中提取的废弃玻璃纤维增​​强聚合物 (GFRP) 材料转化为混凝土的可行性。进行了全面的材料表征，并研究了 WWTB-GFRP 作为粉末、骨料或纤维对混凝土性能的影响。尝试了 10-30% 的水泥替代率。粗骨料替代水平为 33-100% 被考虑，而纤维添加率为 1-1.75 vol.%。对所得混凝土的抗压强度和抗弯能力进行表征。所得混凝土的特征在于抗压强度和抗弯能力。结果表明，WWTB-GFRP 的形状（作为粉末、骨料或纤维）显着影响所得混凝土的性能。因此，虽然 WWTB-GFRP 粉末会导致凝固时间显着增加（由于木质含量及其相关的可溶性糖）以及抗压和抗弯强度显着下降，但应该注意的是，用 10% 的水泥替代的混合物WWTB-GFRP 粉末（去除木质成分后）在 90 天时表现出与参考混合物（不含 WWTB-GFRP）相当的抗压强度。当 WWTB-GFRP 作为纤维增强材料掺入混凝土中时，抗弯能力提高了 15%，而抗压强度没有明显下降。因此，在混凝土中利用 WWTB-GFRP 获得具有相当长期抗压强度的混合物，同时实现更高的抗弯能力，促进可持续发展是可行的。