Exploring the potential of aramid nanofibers in advancing green-engineered cementitious composites

IF 14.2 1区材料科学 Q1 ENGINEERING, MULTIDISCIPLINARY

Composites Part B: Engineering Pub Date : 2025-06-15 DOI:10.1016/j.compositesb.2025.112724

Huayang Sun , Yan Wan , Zhichao Xu , Yanlin Huo , Minjie Jia , Yingzi Yang

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引用次数: 0

Abstract

This study developed an environmentally friendly engineered cementitious composite (ECC) reinforced with aramid nanofibers (ANFs) derived from recycled aramid fibers. ANFs were incorporated into ECC containing high-volume fly ash to improve their strength and ductility. Results showed that adding 0.05 wt % ANFs increased the compressive strength, tensile strength, and tensile strain of ECC by 46.71 %, 46.23 %, and 51.45 %, respectively. The mechanisms through which ANFs enhance the mechanical properties of ECC were investigated through single-fiber pull-out tests, micromechanical analysis, and microstructural analysis. ANFs contributed to filling the pores within the matrix, reducing the matrix porosity and inhibiting crack propagation, which consequently enhanced the compressive properties of ECC. Furthermore, ANFs significantly narrowed the interfacial transition zone (ITZ) at the fiber/matrix interface, thereby improving the frictional bond strength and pull-out energy, ultimately enhancing the tensile ductility of ECC. This study demonstrates the potential of ANFs-reinforced ECC as a sustainable and high-performance material.

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探索芳纶纳米纤维在推进绿色工程胶凝复合材料中的潜力

本研究开发了一种环境友好型的芳纶纳米纤维增强工程胶凝复合材料（ECC）。将ANFs掺入高掺量粉煤灰的ECC中，以提高其强度和延性。结果表明，添加0.05 wt %的ANFs可使ECC的抗压强度、抗拉强度和拉伸应变分别提高46.71%、46.23%和51.45%。通过单纤维拉伸试验、微观力学分析和微观结构分析，探讨了ANFs增强ECC力学性能的机理。ANFs有助于填充基体孔隙，降低基体孔隙率，抑制裂纹扩展，从而提高ECC的抗压性能。此外，ANFs显著缩小了纤维/基体界面的界面过渡区（ITZ），从而提高了摩擦结合强度和拉出能，最终提高了ECC的拉伸延性。这项研究证明了anfs增强ECC作为一种可持续的高性能材料的潜力。

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来源期刊

Composites Part B: Engineering 工程技术-材料科学：复合

CiteScore

24.40

自引率

11.50%

发文量

784

审稿时长

21 days

期刊介绍： Composites Part B: Engineering is a journal that publishes impactful research of high quality on composite materials. This research is supported by fundamental mechanics and materials science and engineering approaches. The targeted research can cover a wide range of length scales, ranging from nano to micro and meso, and even to the full product and structure level. The journal specifically focuses on engineering applications that involve high performance composites. These applications can range from low volume and high cost to high volume and low cost composite development. The main goal of the journal is to provide a platform for the prompt publication of original and high quality research. The emphasis is on design, development, modeling, validation, and manufacturing of engineering details and concepts. The journal welcomes both basic research papers and proposals for review articles. Authors are encouraged to address challenges across various application areas. These areas include, but are not limited to, aerospace, automotive, and other surface transportation. The journal also covers energy-related applications, with a focus on renewable energy. Other application areas include infrastructure, off-shore and maritime projects, health care technology, and recreational products.