再生风机叶片纤维对混凝土力学和抗冻性能的影响

硅酸盐通报 ›› 2023, Vol. 42 ›› Issue (1): 231-238.

所属专题：资源综合利用

再生风机叶片纤维对混凝土力学和抗冻性能的影响

王富平¹, 张默^2,3,4, 周博宇²

1.国能联合动力技术(保定)有限公司,保定 071051;
2.河北工业大学土木与交通学院,天津 300401;
3.天津市装配式建筑与智能建造重点实验室,天津 300401;
4.智慧基础设施研究院,天津 300401

收稿日期:2022-08-29 修订日期:2022-09-24 出版日期:2023-01-15 发布日期:2023-02-15
通信作者: 周博宇,博士研究生。E-mail:zby_hgd@163.com
作者简介:王富平(1981—),男,工程师。主要从事复合材料成型的研究。E-mail:fuping.wang.m@chnenergy.com.cn
基金资助:
国电联合动力技术有限公司项目(LHDL-2021-14);河北省重点研发计划(20373803D)

Effect of Recycled Wind Turbine Blade Fiber on Mechanical Properties and Frost Resistance of Concrete

WANG Fuping¹, ZHANG Mo^2,3,4, ZHOU Boyu²

1. Guoneng United Power Technology Baoding Co., Ltd., Baoding 071051, China;
2. School of Civil and Transportation Engineering, Hebei University of Technology, Tianjin 300401, China;
3. Tianjin Key Laboratory of Prefabricated Building and Intelligent Construction, Tianjin 300401, China;
4. Smart Infrastructure Research Institute, Tianjin 300401, China

Received:2022-08-29 Revised:2022-09-24 Online:2023-01-15 Published:2023-02-15

摘要/Abstract

摘要： 为解决废弃风机叶片大量堆存、难以处理的问题,通过机械粉碎方法得到再生风机叶片纤维,研究不同掺量(0%、10%、20%和30%,质量分数)再生纤维对混凝土力学性能和抗冻性能的影响,探讨废弃风机叶片在混凝土中利用的经济和环境价值。结果表明:掺10%、20%和30%再生风机叶片纤维混凝土的抗弯强度和劈裂抗拉强度较素混凝土提高明显,抗弯强度分别提高了2.8%、2.8%和11.1%,劈裂抗拉强度分别提高56.3%、68.8%和 40.6%。掺20%再生风机叶片纤维混凝土冻融寿命可达75次,远超素混凝土的冻融寿命(25次),混凝土抗冻性能显著提高。但是,再生纤维掺量过高(30%)时,混凝土吸水率上升明显,抗压强度和抗冻性能下降。相比传统的焚烧处理,在混凝土中掺入20%再生风机叶片纤维,可降低混凝土成本69.2元/m³,减少CO₂排放0.04 t/m³。

关键词: 混凝土, 废弃风机叶片, 再生纤维, 力学性能, 破坏形态, 抗冻性能, 资源化再利用

Abstract: To solve the problem of massive piling and overcome the difficulty of treatment for waste wind turbine blade (WTB), the recycled WTB (rWTB) fiber was obtained by mechanical crushing, and the influence of rWTB fiber content (0%, 10%, 20% and 30%, mass fraction) on the mechanical properties and frost resistance of concrete were investigated. The economic and environmental benefits of the reuse of waste WTB in concrete were discussed. It is revealed that adding 10%, 20% and 30% rWTB fiber significantly increase the flexural strength and splitting tensile strength of concrete, the flexural strength of concrete increases by 2.8%, 2.8% and 11.1%, and the splitting tensile strength increases by 56.3%, 68.8% and 40.6%, respectively. The freeze-thaw cycles of 20% rWTB fiber concrete are 75 times, far exceeding that of plain concrete (25 times), illustrating the highly improved frost resistance. However, the compressive strength and frost resistance decrease with excessive addition of rWTB fiber (30%), and the water absorption increases obviously. Compared with the incineration treatment, adding 20% rWTB fiber can reduce the cost of concrete by 69.2 yuan/m³ and the CO₂ emission by 0.04 t/m³.

Key words: concrete, waste wind turbine blade, recycled fiber, mechanical property, failure mode, frost resistance, resource utilization

中图分类号:

TU528

王富平, 张默, 周博宇. 再生风机叶片纤维对混凝土力学和抗冻性能的影响[J]. 硅酸盐通报, 2023, 42(1): 231-238.

WANG Fuping, ZHANG Mo, ZHOU Boyu. Effect of Recycled Wind Turbine Blade Fiber on Mechanical Properties and Frost Resistance of Concrete[J]. BULLETIN OF THE CHINESE CERAMIC SOCIETY, 2023, 42(1): 231-238.

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再生风机叶片纤维对混凝土力学和抗冻性能的影响

Effect of Recycled Wind Turbine Blade Fiber on Mechanical Properties and Frost Resistance of Concrete

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