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再生轮胎钢纤维对混凝土的增强效果

Effectiveness of Concrete Reinforcement with Recycled Tyre Steel Fibres.

作者信息

Michalik Agnieszka, Chyliński Filip, Bobrowicz Jan, Pichór Waldemar

机构信息

Building Structures, Geotechnics and Concrete Department, Instytut Techniki Budowlanej, ul. Filtrowa 1, 00-611 Warsaw, Poland.

Certification Department, Instytut Techniki Budowlanej, ul. Filtrowa 1, 00-611 Warsaw, Poland.

出版信息

Materials (Basel). 2022 Mar 26;15(7):2444. doi: 10.3390/ma15072444.

DOI:10.3390/ma15072444
PMID:35407777
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC9000085/
Abstract

The role of searching for industrial waste management solutions in construction is key for environmental protection. Research in recent years has focused on solutions aimed at reducing the carbon footprint. This paper presents the results of tests conducted on concrete reinforced with treated recycled tyre steel fibres (RTSFs) compared to the same amount of manufactured steel fibres (MSFs). The effectiveness of concrete reinforcement with RTSFs was analysed using the fracture mechanics parameters of cementitious composites. Rheological tests, residual flexural tensile strength tests, work of fracture measurements, toughness indices, examinations of the fibre distribution in the concrete, and SEM observations of the concrete fractures with fibres were performed. Determining the work of fracture and toughness indices was an innovative aspect of this paper. As the amount of RTSFs increased, a decrease in the consistency was observed, although the distribution of fibres in the concrete was uniform, as proven by the results of computer tomography tests. Concrete reinforced with RTSFs that is purified and refined during the recycling process might have better properties than concrete reinforced with the same amount of MSFs. The application of RTSFs in construction has environmental and economic benefits in addition to the strengthening of cementitious composites.

摘要

在建筑领域寻找工业废物管理解决方案对于环境保护至关重要。近年来的研究集中在旨在减少碳足迹的解决方案上。本文展示了对用经处理的再生轮胎钢纤维（RTSF）增强的混凝土与相同数量的人造钢纤维（MSF）增强的混凝土进行测试的结果。使用胶凝复合材料的断裂力学参数分析了RTSF增强混凝土的有效性。进行了流变试验、残余弯曲拉伸强度试验、断裂功测量、韧性指数测定、混凝土中纤维分布的检测以及含纤维混凝土断裂面的扫描电子显微镜观察。确定断裂功和韧性指数是本文的创新之处。随着RTSF用量的增加，观察到稠度有所降低，不过计算机断层扫描测试结果证明，纤维在混凝土中的分布是均匀的。在回收过程中经过净化和精炼的RTSF增强混凝土可能比相同用量的MSF增强混凝土具有更好的性能。RTSF在建筑中的应用除了增强胶凝复合材料外，还具有环境和经济效益。

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本文引用的文献

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Mechanical Performance and Environmental Assessment of Sustainable Concrete Reinforced with Recycled End-of-Life Tyre Fibres.废旧轮胎纤维增强可持续混凝土的力学性能与环境评估
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2
Prediction Models for the Mechanical Properties of Self-Compacting Concrete with Recycled Rubber and Silica Fume.含有再生橡胶和硅灰的自密实混凝土力学性能预测模型
Materials (Basel). 2020 Apr 12;13(8):1821. doi: 10.3390/ma13081821.
3
Use of steel fibres recovered from waste tyres as reinforcement in concrete: pull-out behaviour, compressive and flexural strength.
将从废旧轮胎中回收的钢纤维用作混凝土中的增强材料：拔出性能、抗压强度和抗弯强度。
Waste Manag. 2009 Jun;29(6):1960-70. doi: 10.1016/j.wasman.2008.12.002. Epub 2009 Jan 22.