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再生钢纤维和钢筋增强混凝土梁的实验室测试

Laboratory Tests of Concrete Beams Reinforced with Recycled Steel Fibres and Steel Bars.

作者信息

Pająk Małgorzata, Wandzik Grzegorz

机构信息

Department of Structural Engineering, Silesian University of Technology, Akademicka 5, 44-100 Gliwice, Poland.

出版信息

Materials (Basel). 2021 Nov 9;14(22):6752. doi: 10.3390/ma14226752.

DOI:10.3390/ma14226752
PMID:34832154
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC8619042/
Abstract

This paper explores the possibility of the partial replacement of the longitudinal reinforcement in reinforced concrete (RC) beams with recycled steel fibres (RSF). Testing was focused on the contribution of two volume ratios of the RSF-0.5%, 1.0%. Basic compression and flexural tensile tests were performed to evaluate the effectiveness of the fibres following current standards. Additionally, the full-scale beams with and without conventional reinforcement were subjected to four-point bending tests. The results indicate that RSF improved the load-bearing capacity of the RC beams. Cooperation of RSF with the steel bars in carrying loads was proved. Findings from the Digital Image Correlation (DIC) revealed no impact on the cracking pattern of the RC beams.

摘要

本文探讨了用再生钢纤维（RSF）部分替代钢筋混凝土（RC）梁中纵向钢筋的可能性。测试重点在于两种体积比的RSF——0.5%和1.0%的作用。按照现行标准进行了基本压缩和弯曲拉伸试验，以评估纤维的有效性。此外，对有和没有传统配筋的全尺寸梁进行了四点弯曲试验。结果表明，RSF提高了RC梁的承载能力。证明了RSF与钢筋在承载方面的协同作用。数字图像相关（DIC）的结果显示，对RC梁的裂缝模式没有影响。

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