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<p>This study investigates the mix proportions of modified concrete using various aggregates and additives to enhance the performance and sustainability of construction materials. The research focuses on the substitution of coarse and fine aggregates with plastic aggregates and steel slag, respectively, and the incorporation of fly ash and lime to improve the concrete properties. The control mixture (M40) serves as the baseline, with subsequent modifications involving different percentages of plastic aggregates, steel slag, fly ash, and lime. Study shows that, when the steel slag substitution reached 40%, the strength improved by 14%. However, the workability of the mixes decreased significantly with more than 40% steel slag replacement. Also, A steady increase in split tensile strength was observed with higher proportions of steel slag. SAI values for strength parameters when steel slag is used as a replacement for fine aggregates. The data indicates that the flexural strength of the mixes falls within the acceptable range. Overall, the strength of all mixes using steel slag replacements remains satisfactory. This approach aims to address environmental concerns associated with conventional concrete production by utilizing waste materials and industrial by-products, thereby reducing the carbon footprint and promoting sustainable construction practices. The mix proportions and their corresponding acronyms are detailed, providing a comprehensive overview of the modified concrete mixtures evaluated in this study.</p>

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Incorporating recycled plastic aggregates with coarse and fine aggregates for enhancing the properties of concrete

  • 期刊论文

  • 发表日期：

    2025年4月11日

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  • Pardeep Kuhar,
  • Amardeep Boora

摘要

This study investigates the mix proportions of modified concrete using various aggregates and additives to enhance the performance and sustainability of construction materials. The research focuses on the substitution of coarse and fine aggregates with plastic aggregates and steel slag, respectively, and the incorporation of fly ash and lime to improve the concrete properties. The control mixture (M40) serves as the baseline, with subsequent modifications involving different percentages of plastic aggregates, steel slag, fly ash, and lime. Study shows that, when the steel slag substitution reached 40%, the strength improved by 14%. However, the workability of the mixes decreased significantly with more than 40% steel slag replacement. Also, A steady increase in split tensile strength was observed with higher proportions of steel slag. SAI values for strength parameters when steel slag is used as a replacement for fine aggregates. The data indicates that the flexural strength of the mixes falls within the acceptable range. Overall, the strength of all mixes using steel slag replacements remains satisfactory. This approach aims to address environmental concerns associated with conventional concrete production by utilizing waste materials and industrial by-products, thereby reducing the carbon footprint and promoting sustainable construction practices. The mix proportions and their corresponding acronyms are detailed, providing a comprehensive overview of the modified concrete mixtures evaluated in this study.