使用选择性压碎风力轮机叶片的混凝土混合物的机械性能:与原料压碎的比较
Víctor Revilla-Cuesta1, Ana B Espinosa2, Roberto Serrano-López1
1Department of Civil Engineering, University of Burgos, 09001 Burgos, Spain.
Materials (Basel, Switzerland)
|January 8, 2025
概括
回收风力轮机叶片废弃物 (SCWTB) 可以用作混凝土添加剂. 这项研究表明,SCWTB增强了混凝土的性能.
科学领域:
- 材料科学 材料科学 材料科学
- 土木工程 土木工程是指土木工程.
- 可持续建筑 可持续建筑
背景情况:
- 风力轮机叶片废弃物,主要是玻璃纤维增强聚合物 (GFRP),存在重大处置挑战.
- 将GFRP废料回收成混凝土添加剂为风能行业提供了一个可持续的解决方案.
研究的目的:
- 调查使用选择性压碎风力轮机叶片 (SCWTB) 废弃物作为混凝土生产中的原材料的可行性.
- 评估混凝土的新鲜性和机械性质,包括SCWTB的不同百分比.
主要方法:
- 混凝土混合物中含有1.5%,3.0%,4.5%和6.0%的SCWTB重量.
- 评估了新鲜性质 (沉降) 和机械性能 (压力强度,分裂拉力强度,屈曲强度,波松系数).
- 扫描电子显微镜 (SEM) 用于检查纤维粘附在水泥基质内.
主要成果:
- 加入SCWTB稍微减少了混凝土的沉降,但确保了足够的纤维粘附性.
- 压力强度仍然很高 (28天45MPa),除了长期下降至6.0%的SCWTB.
- 分裂拉伸强度保持在高达3.0%的SCWTB,曲强度在几个混合物中是可比的.
- 与原始粉碎刀片废物相比,SCWTB改善了大多数机械性能.
结论:
- 在许多情况下,SCWTB是用于混凝土生产的可行的材料,在许多情况下提供了更好的机械性能.
- 使用SCWTB的混凝土适用于压缩应力占主导地位的应用.
- 这种回收方法解决了风能行业的一个关键环境问题.
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