风电叶片回收纤维在水泥基材料中的应用研究
Research on the application of wind turbine blade recycled fiber in cement-based materials
关键词:
Research on the application of wind turbine blade recycled fiber in cement-based materials
Key words:
Wind turbine blade recycled fiber; Mortar; Fluidity; Bending strength; Deflection; Aging resistance
刊期:
2025年第9期
DOI:
10.19761/j.1000-4637.2025.09.089.05
文章编号:
基金项目:
国家重点研发计划项目(2018YFD1101000)。
作者:
赵娇娇1,2,李清海2,*,高建伟1,吴玉姣1,张 鑫1,周胜男2
单位:
赵娇娇1,2,李清海2,*,高建伟1,吴玉姣1,张 鑫1,周胜男2
摘要
摘 要:将废旧风电叶片经机械破碎、筛分成3种不同尺寸的纤维(长径比:A纤维>B纤维>C纤维)分别掺入砂浆中,研究了其掺量对砂浆流动度、抗弯强度、耐老化性能的影响。结果表明:随着纤维掺量的增加,砂浆的流动度逐渐降低;当纤维掺量相同时(≤10%),试件的抗弯强度大小排序为掺A纤维试件>掺B纤维试件>掺C纤维试件;随着纤维掺量的增加,试件的抗弯强度基本呈增加趋势,试件的挠度增加;当纤维掺量相同时,试件的挠度大小排序为掺A纤维试件>掺B纤维试件>掺C纤维试件;随着老化龄期的延长,试件的抗弯强度降低;掺不同纤维的试件在相同老化龄期时的耐老化性能基本一致。
Abstract: The waste wind turbine blades were mechanically crushed and sieved into three different sizes of fibers(length-diameter ratio: A fiber>B fiber>C fiber) and mixed into mortar. The effect of the fibers content on the fluidity, bending strength, and aging resistance of the mortar was studied. The results indicate that as the fiber content increases, the fluidity of the mortar gradually decreases. When the fiber content is the same(≤10%), the bending strength of the specimens is ranked as follows: specimens with A fiber>specimens with B fiber>specimens with C fiber. With the increase of fiber content, the bending strength of the specimen basically shows an increasing trend, and the deflection of the specimen increases. When the fiber content is the same, the order of deflection of the specimens is ranked as follows: specimens with A fiber>specimens with B fiber>specimens with C fiber. As the aging age increases, the bending strength of the specimens decreases. The aging resistance of specimens with different fibers is basically the same at the same aging age.
结论
(1)随着纤维掺量的增加,砂浆的流动度逐渐降低,其中,掺A纤维砂浆的流动度下降最快,掺C纤维砂浆的流动度下降最慢。
(2)当纤维掺量相同时(≤10%),试件的抗弯强度大小排序为掺A纤维试件>掺B纤维试件>掺C纤维试件,即纤维的长径比越大,试件的抗弯强度越高。随着纤维掺量的增加,试件的抗弯强度基本呈增加趋势,试件的挠度增加。当纤维掺量相同时,试件的挠度大小排序为:掺A纤维试件>掺B纤维试件>掺C纤维试件。
(3)随着老化龄期的延长,试件的抗弯强度降低,掺不同纤维的试件在相同老化龄期时的抗弯强度损失率基本一致,故试件的耐老化性能基本一致。风电叶片回收纤维可以在一定程度上替代常规玻璃纤维作为水泥基材料的增强材料使用。
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引用本文
赵娇娇,李清海,高建伟,等.风电叶片回收纤维在水泥基材料中的应用研究[J].混凝土与水泥制品,2025(9):89-92,96.
ZHAO J J,LI Q H,GAO J W,et al.Research on the application of wind turbine blade recycled fiber in cement-based materials[J].China Concrete and Cement Products,2025(9):89-92,96.
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