回收风机叶片纤维与玻璃纤维对硅酸盐水泥性能的影响

doi:10.16552/j.cnki.issn1001-1625.2026.0062

摘要/Abstract

摘要：

为解决废弃风机叶片的固废处理难题，并探究其在建筑材料中的高价值化利用潜力，本文对比分析了不同掺量（0.5%、1.0%、1.5%，质量分数）的回收风机叶片纤维（RWTBF）和玻璃纤维对硅酸盐水泥水化进程的影响，重点探究了两种纤维对水泥基体力学性能和显微结构的作用规律。结果表明，两种纤维的引入均延长了水泥的初凝和终凝时间，对早期水化过程产生了一定缓凝作用。在力学性能方面，回收风机叶片纤维表现出更显著的增强效果。28 d龄期时，添加1.5%回收纤维组的抗折强度达11.7 MPa，显著优于对照组的8.8 MPa及同等掺量玻璃纤维组的9.4 MPa。同时，相较于对照组68.7 MPa的抗压强度，添加1.5%回收纤维组提升至71.4 MPa，同等掺量的玻璃纤维组的抗压强度提升至70.9 MPa。微观结构分析显示，与玻璃纤维相比，回收风机叶片纤维在水泥基体中构建了更有效的网络结构，从而大幅提高了净浆的抗折强度。回收风机叶片纤维用于水泥胶凝材料不仅能有效提升材料性能，还为解决风电废弃物的高值化回收利用提供了可行途径。

关键词: 硅酸盐水泥, 回收风机叶片纤维, 玻璃纤维, 水化产物, 力学性能, 显微结构

Abstract:

To tackle the disposal dilemma of decommissioned wind turbine blades and explore their potential for high-value utilization in construction materials， this study comparatively analyzed the effects of recycled wind turbine blade fibers （RWTBF） and glass fibers at different dosages （0.5%， 1.0%， and 1.5%， mass fraction） on the hydration process of Portland cement. The research focused on the effects of these two fiber types on the mechanical properties and microstructure of the cement matrix. The results indicate that the incorporation of both fibers prolongs the initial and final setting time of the cement， exerting a slight retarding effect on the early hydration process. Regarding mechanical performance， RWTBF demonstrates a more pronounced reinforcing effect. At 28 d， the specimens with 1.5% RWTBF achieve a peak flexural strength of 11.7 MPa， significantly outperforming the 8.8 MPa of the control group and the 9.4 MPa of the equivalent glass fiber group. Concurrently， compared to the baseline compressive strength of 68.7 MPa for the control group， the compressive strength of the 1.5% RWTBF group increases to 71.4 MPa， while that of the equivalent glass fiber group rises to 70.9 MPa. Microstructural analysis reveals that， compared to glass fibers， RWTBF constructs a more effective network structure within the cement matrix， thereby substantially enhancing the flexural strength of the paste. In conclusion， the application of RWTBF in cementitious materials not only effectively improves material performance but also provides a viable pathway for the high-value recycling of wind energy waste.

Key words: Portland cement, recycled wind turbine blade fiber, glass fiber, hydration product, mechanical property, microstructure

中图分类号:

TU528.58

余哲俊, 王景然, 张锦化, 韩兵强, 倪月娥. 回收风机叶片纤维与玻璃纤维对硅酸盐水泥性能的影响[J]. 硅酸盐通报, 2026, 45(7): 2408-2418.

YU Zhejun, WANG Jingran, ZHANG Jinhua, HAN Bingqiang, NI Yue’e. Effects of Recycled Wind Turbine Blade Fibers and Glass Fibers on Properties of Portland Cement[J]. BULLETIN OF THE CHINESE CERAMIC SOCIETY, 2026, 45(7): 2408-2418.

图/表 13

表1 硅酸盐水泥和两种纤维的主要化学成分

Table 1 Main chemical composition of Portland cement and two types of fibers

Material	Mass fraction/%
Material	CaO	SiO₂	Al₂O₃	Fe₂O₃	SO₃	MgO	TiO₂	Na₂O and K₂O	LOI
Portland cement	63.25	21.08	6.95	2.36	1.94	1.32	—	0.09	3.01
Recycled fiber	15.93	48.24	11.28	0.60	—	3.12	0.33	0.40	18.65
Glass fiber	23.97	54.68	14.93	0.31	—	3.78	0.20	1.32	0.81

图1 两种纤维的实物图

Fig.1 Physical photos of two fiber varieties

表2 两种纤维的物理性质对比

Table 2 Physical properties of two types of fibers

Fiber type	Average length/mm	Diameter range/μm	Aspect ratio	Density/（kg·m^-3）
Glass fiber	10	13~15	~700	2 540
Recycled fiber	8~12	50~100	80~240	1 874

表3 两种纤维对水泥水化影响的试验配比

Table 3 Experimental mix proportion for analyzing effects of two types of fibers on cement hydration

Sample	Mass fraction/%
Sample	Portland cement	Fiber	Water	Water reducer
W	100	—	26	0.1
Xa	100	0.5	26	0.1
Ya	100	1.0	26	0.1
Za	100	1.5	26	0.1
Xc	100	0.5	26	0.1
Yc	100	1.0	26	0.1
Zc	100	1.5	26	0.1

图2 水泥试样制作流程

Fig.2 Fabrication process of cement specimens

图3 添加不同掺量两种纤维的硅酸盐水泥浆体的水化放热曲线

Fig.3 Hydration heat evolution curves of Portland cement pastes with different dosages of two types of fibers

图4 添加不同掺量的两种纤维的硅酸盐水泥浆体的流动度和凝结时间

Fig.4 Fluidity and setting times of Portland cement pastes with different dosages of two types of fibers

图5 添加不同掺量两种纤维的硅酸盐水泥试样在不同龄期的抗折强度和抗压强度

Fig.5 Flexural and compressive strength of Portland cement specimens with different dosages of two types of fibers at different ages

图6 经养护28 d并完成抗折强度测试的硅酸盐水泥试样及其断口面SEM照片

Fig.6 SEM images of Portland cement specimens and their fracture surfaces after flexural strength testing at 28 d

图7 经养护28 d的硅酸盐水泥试样抗压破坏形态及纤维分布示意图

Fig.7 Compressive failure patterns of Portland cement specimens at 28 d and schematic of fiber distribution

图8 经养护28 d添加不同掺量的两种纤维的硅酸盐水泥试样的XRD谱

Fig.8 XRD patterns of Portland cement specimens with different dosages of two types of fibers at 28 d

图9 水化28 d硅酸盐水泥试样中的水化产物示意图

Fig.9 Schematic diagram of hydration products in Portland cement specimens at 28 d

图10 硅酸盐水泥试样水化28 d断口的SEM照片

Fig.10 SEM images of fracture surfaces of Portland cement specimens hydrated for 28 d

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