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Recycled aggregates (RA), derived from construction and demolition (C&D) waste, offer a sustainable alternative to natural coarse aggregates in construction. This study evaluates the feasibility of recycled concrete aggregates (RCA) and recycled brick aggregates (RBA) for use in road subbase applications. Laboratory tests, including proctor compaction and California Bearing Ratio (CBR) tests, were conducted to determine their Optimum Moisture Content (OMC) and Maximum Dry Density (MDD). Results indicate that RCA and RBA achieved dry densities of up to 1330 kg/m3 and CBR values suitable for subbase layers, demonstrating their potential for practical use. Utilizing RA reduces landfill waste, conserves natural resources, and minimizes environmental impact. By assessing the performance of RA and identifying future research directions, this study advocates for its adoption in sustainable construction, contributing to a lower carbon footprint.

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Comparative Study of the Laboratory Compaction Methods Using Pristine and Recycled Aggregates

  • 会议论文

  • 发表日期：

    2026年

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  • S. Aarabhi,
  • Poushali Pal,
  • R. Suja

摘要

Recycled aggregates (RA), derived from construction and demolition (C&D) waste, offer a sustainable alternative to natural coarse aggregates in construction. This study evaluates the feasibility of recycled concrete aggregates (RCA) and recycled brick aggregates (RBA) for use in road subbase applications. Laboratory tests, including proctor compaction and California Bearing Ratio (CBR) tests, were conducted to determine their Optimum Moisture Content (OMC) and Maximum Dry Density (MDD). Results indicate that RCA and RBA achieved dry densities of up to 1330 kg/m3 and CBR values suitable for subbase layers, demonstrating their potential for practical use. Utilizing RA reduces landfill waste, conserves natural resources, and minimizes environmental impact. By assessing the performance of RA and identifying future research directions, this study advocates for its adoption in sustainable construction, contributing to a lower carbon footprint.