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<p>Concrete is one of the most utilized cement-based building materials and possesses certain inherent drawbacks, including a low value of tensile strength and a vulnerability to cracking. Incorporating e-waste plastic aggregates in concrete presents a modern and innovative strategy for sustainable concrete production, offering the dual benefits of reducing solid waste generation and mitigating environmental pollution. However, existing research consistently reports that substituting natural aggregates with e-waste plastic tends to diminish the strength characteristics of concrete. To resolve this issue, significant research has focused on enhancing its properties. Nanotechnology has recently emerged as a valuable method for boosting the performance of cementitious materials as well as plastic-modified concrete in construction, with graphene oxide (GO) standing out as one of the most widely studied nanomaterials. Even in small amounts, graphene oxide can extensively increase the strength of mortar, concrete, and cement paste because it has a long surface area, outstanding mechanical characteristics, effective heat conduction, and many oxygen-rich groups attached to the material’s surface. This review therefore examines the fresh properties, mechanical behavior, and microstructural characteristics of GO-modified cementitious composites, with particular focus on their application in e-waste plastic aggregate concrete. Most of the existing research has focused on cement paste and mortar, while the application of graphene oxide in concrete and e-waste plastic-based concrete has been relatively underexplored. Previous studies have shown that effective dispersion of graphene oxide significantly enhances the mechanical properties of mostly cementitious composites, including compressive strength, tensile strength, and flexural strength. Accordingly, this review aims to highlight the strengthening potential of graphene oxide in cementitious systems such as concrete and e-waste plastic aggregate-based concrete, with a focus on advancing its application in sustainable construction and fostering future innovations in building practices.</p>

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A Review on the Fresh, Mechanical, and Microstructural Characteristics of Cementitious Materials Modified with E-Waste Plastic Aggregate and Graphene Oxide

  • 期刊论文

  • 发表日期：

    2025年9月16日

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  • Sanjeet Kumar,
  • Sanjay Kumar

摘要

Concrete is one of the most utilized cement-based building materials and possesses certain inherent drawbacks, including a low value of tensile strength and a vulnerability to cracking. Incorporating e-waste plastic aggregates in concrete presents a modern and innovative strategy for sustainable concrete production, offering the dual benefits of reducing solid waste generation and mitigating environmental pollution. However, existing research consistently reports that substituting natural aggregates with e-waste plastic tends to diminish the strength characteristics of concrete. To resolve this issue, significant research has focused on enhancing its properties. Nanotechnology has recently emerged as a valuable method for boosting the performance of cementitious materials as well as plastic-modified concrete in construction, with graphene oxide (GO) standing out as one of the most widely studied nanomaterials. Even in small amounts, graphene oxide can extensively increase the strength of mortar, concrete, and cement paste because it has a long surface area, outstanding mechanical characteristics, effective heat conduction, and many oxygen-rich groups attached to the material’s surface. This review therefore examines the fresh properties, mechanical behavior, and microstructural characteristics of GO-modified cementitious composites, with particular focus on their application in e-waste plastic aggregate concrete. Most of the existing research has focused on cement paste and mortar, while the application of graphene oxide in concrete and e-waste plastic-based concrete has been relatively underexplored. Previous studies have shown that effective dispersion of graphene oxide significantly enhances the mechanical properties of mostly cementitious composites, including compressive strength, tensile strength, and flexural strength. Accordingly, this review aims to highlight the strengthening potential of graphene oxide in cementitious systems such as concrete and e-waste plastic aggregate-based concrete, with a focus on advancing its application in sustainable construction and fostering future innovations in building practices.