Analysis of the influence of iron tailings sand on the properties of concrete mixtures and cyclic compressive behavior.

IF 3.9 2区综合性期刊 Q1 MULTIDISCIPLINARY SCIENCES

Scientific Reports Pub Date : 2025-07-24 DOI:10.1038/s41598-025-10745-0

Liang Chen, Yu Tang

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Abstract

This study investigates the effects of varying iron tailings sand (ITS) content on the workability, mechanical properties, and cyclic compressive behavior of concrete. The results show that increasing ITS content reduces slump and increases water absorption and pressure bleeding rate, with workability dropping below standard thresholds when ITS exceeds 40%. Compressive strength improves with ITS content up to 40%, reaching a maximum of 45.6 MPa, followed by a decline at higher replacement levels. Cyclic loading tests reveal that concrete with 30-40% ITS exhibits enhanced energy dissipation, deformation capacity, and stable hysteresis behavior. Statistical analysis confirms the significance of strength variation across mixes (p < 0.01). The study identifies 30-40% ITS as the optimal range for balancing strength, ductility, and durability. These findings contribute to the sustainable utilization of metallurgical waste in structural concrete and offer practical guidance for its application in seismic-resistant and cyclic load-bearing structures.

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铁尾砂对混凝土混合料性能及循环压缩性能的影响分析。

本研究探讨了不同铁尾矿砂（ITS）含量对混凝土和易性、力学性能和循环压缩性能的影响。结果表明：增加ITS含量可降低坍落度，提高吸水率和压出血率，当ITS含量超过40%时，可和易性降至标准阈值以下；当ITS含量达到40%时，抗压强度有所提高，最高可达45.6 MPa，随着ITS含量的增加，抗压强度有所下降。循环加载试验表明，含有30-40% ITS的混凝土表现出增强的能量耗散、变形能力和稳定的滞回性能。统计分析证实了混合料强度变化的显著性(p

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Scientific Reports Natural Science Disciplines-

CiteScore

7.50

自引率

4.30%

发文量

19567

审稿时长

3.9 months

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