张海军, 李涛, 展猛. 纤维增强铁尾矿砂水泥基材料力学性能和孔隙结构实验[J]. 矿产综合利用, 2024, 45(4): 203-210. DOI: 10.3969/j.issn.1000-6532.2024.04.030
    引用本文: 张海军, 李涛, 展猛. 纤维增强铁尾矿砂水泥基材料力学性能和孔隙结构实验[J]. 矿产综合利用, 2024, 45(4): 203-210. DOI: 10.3969/j.issn.1000-6532.2024.04.030
    ZHANG Haijun, LI Tao, ZHAN Meng. Mechanical properties and pore structure of fiber reinforced iron tailings cement-based materials[J]. Multipurpose Utilization of Mineral Resources, 2024, 45(4): 203-210. DOI: 10.3969/j.issn.1000-6532.2024.04.030
    Citation: ZHANG Haijun, LI Tao, ZHAN Meng. Mechanical properties and pore structure of fiber reinforced iron tailings cement-based materials[J]. Multipurpose Utilization of Mineral Resources, 2024, 45(4): 203-210. DOI: 10.3969/j.issn.1000-6532.2024.04.030

    纤维增强铁尾矿砂水泥基材料力学性能和孔隙结构实验

    Mechanical Properties and Pore Structure of Fiber Reinforced Iron Tailings Cement-based Materials

    • 摘要: 这是一篇陶瓷及复合材料领域的论文。本文详细研究和讨论了铁尾矿砂和PVA纤维对水泥基复合材料抗压强度、四点抗弯强度、弯曲韧性、孔隙结构。此外,建立了抗压强度与四点抗弯强度之间换算关系。结果表明:铁尾矿砂掺入对力学性能有增强效果,并且这种增强效果随着取代率的增加呈现先增加后减小趋势。而PVA纤维掺入后力学性能进一步提升,并且呈现出良好韧性。此外,铁尾矿砂取代率40%和PVA纤维复合时,基体内部孔隙明显降低。因此,认为当铁尾矿砂取代率为40%与PVA纤维结合,水泥基复合材料拥有良好的力学性能。

       

      Abstract: This is an article in the field of ceramics and composites. In this article, the effects of IOT and polyvinyl alcohol (PVA) fiber (PF) on the compressive strength, four-point flexural strength, flexural toughness, pore structure of cement-based composites were studied and discussed in detail. The conversion relationship between compressive strength and four-point flexural strength was established. The results showed that the incorporation of IOT had an enhanced effect on the mechanical properties, and this enhanced effect showed a trend of first increasing and then decreasing with the increase in the substitution rate of IOT. However, when PF was added, the mechanical properties under the combined effect of PF and IOT were further improved and showed good toughness. In addition, the internal pores of the matrix with IOT substitution rate of 40% and PF were obviously reduced. Thus, it was concluded that the cement-based composite material had good mechanical properties when the 40% IOT was combined with PF.

       

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