Upcycling GFRP wastes from end-of-life wind turbine blades into Ultra-High-Strength Geopolymer Concrete (UHSGC)

IF 11.2 1区环境科学与生态学 Q1 ENGINEERING, ENVIRONMENTAL

Resources Conservation and Recycling Pub Date : 2025-06-20 DOI:10.1016/j.resconrec.2025.108453

Dan-Dan Shi , Bo-Tao Huang , Zhi-Liang Zhang , Ling-Yu Xu , Jian-Guo Dai

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引用次数: 0

Abstract

In this study, recycled glass fiber-reinforced polymer (rGFRP) powders derived from End-of-Life Wind Turbine Blades (EoL-WTB) were successfully used in partial replacement of raw precursors to produce Ultra-High-Strength Geopolymer Concrete (UHSGC) with compressive strengths exceeding 110 MPa. A comprehensive investigation was conducted on their mechanical performances, reaction mechanisms, microstructures and sustainability. The results indicated that higher rGFRP powder contents reduced compressive strengths of UHSGC, but a 20 % rGFRP/precursor replacement yielded the highest flexural strength (14.68 MPa). Chemical and microstructural analyses revealed a transformation in reaction products from layered C-(A)-S-H gels to highly polymerized N-A-S-H gels under higher rGFRP powder contents. Furthermore, compared to rGFRP-incorporated geopolymer/cementitious concrete from existing literature, UHSGC with 20 % rGFRP powder content in this study recorded the best sustainability and highest cost efficiency. These research findings provided valuable technological insights to promote the value-added utilization of EoL-WTB wastes and advance the development of sustainable and high-performance construction materials.

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将废弃风力涡轮机叶片中的玻璃钢废料升级为超高强度地聚合物混凝土（UHSGC）

在这项研究中，从报废风力涡轮机叶片（el - wtb）中提取的回收玻璃纤维增强聚合物（rGFRP）粉末成功地用于部分替代原始前驱体，以生产抗压强度超过110 MPa的超高强度地聚合物混凝土（UHSGC）。对其力学性能、反应机理、微观结构和可持续性进行了全面研究。结果表明，rGFRP粉含量越高，UHSGC的抗压强度越低，但当rGFRP/前驱体含量为20%时，UHSGC的抗折强度最高（14.68 MPa）。化学和微观结构分析表明，在rGFRP粉含量较高的情况下，反应产物从层状C-(a)- s - h凝胶转变为高度聚合的N-A-S-H凝胶。此外，与现有文献中含有rGFRP的地聚合物/胶凝混凝土相比，本研究中含有20% rGFRP粉的UHSGC具有最佳的可持续性和最高的成本效益。这些研究成果为促进EoL-WTB废弃物的增值利用和推进可持续高性能建筑材料的发展提供了有价值的技术见解。

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来源期刊

Resources Conservation and Recycling 环境科学-工程：环境

CiteScore

22.90

自引率

6.10%

发文量

625

审稿时长

23 days

期刊介绍： The journal Resources, Conservation & Recycling welcomes contributions from research, which consider sustainable management and conservation of resources. The journal prioritizes understanding the transformation processes crucial for transitioning toward more sustainable production and consumption systems. It highlights technological, economic, institutional, and policy aspects related to specific resource management practices such as conservation, recycling, and resource substitution, as well as broader strategies like improving resource productivity and restructuring production and consumption patterns. Contributions may address regional, national, or international scales and can range from individual resources or technologies to entire sectors or systems. Authors are encouraged to explore scientific and methodological issues alongside practical, environmental, and economic implications. However, manuscripts focusing solely on laboratory experiments without discussing their broader implications will not be considered for publication in the journal.