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<p>Sustainable management of construction and demolition waste (CDW) has become a crucial aspect of the construction industry’s endeavor to reduce waste generation and promote resource conservation. This paper encompasses the recovery of CDW through recycled coarse aggregate (RCA) and recycled fine aggregate (RFA), different shortcomings and measures already taken for recycled aggregate (RA), and its application in various construction sectors. The RA offers benefits over natural aggregate (NA), reducing the cost of construction. It helps to mitigate excess carbon emissions and provides benefits such as waste reduction, resource conservation, and energy saving. The water absorption capacity of RCA and RFA exhibits higher values, 5.09% and 9.0% compared to natural coarse aggregate (NCA) and natural fine aggregate (NFA), 0.87% and 1.01%, respectively. The sp. gravity of RCA and RFA is a lower value of 2.41 and 2.34 vs. 2.68 and 2.64 for NCA and NFA, respectively. Physical and chemical treatment methods can improve the quality of RA by reducing water absorption capacity and increasing sp. gravity. Among all the treatment methods, pozzolanic slurry treatment is the most economical method. Recycle and reuse of RA in roads and structural applications are recommended for improved waste management.</p>

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Effective utilization of construction and demolition waste through recycling coarse and fine aggregate: a critical review

  • 期刊论文

  • 发表日期：

    2025年9月30日

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  • Subhadip Pramanik,
  • Debabrata Mazumder

摘要

Sustainable management of construction and demolition waste (CDW) has become a crucial aspect of the construction industry’s endeavor to reduce waste generation and promote resource conservation. This paper encompasses the recovery of CDW through recycled coarse aggregate (RCA) and recycled fine aggregate (RFA), different shortcomings and measures already taken for recycled aggregate (RA), and its application in various construction sectors. The RA offers benefits over natural aggregate (NA), reducing the cost of construction. It helps to mitigate excess carbon emissions and provides benefits such as waste reduction, resource conservation, and energy saving. The water absorption capacity of RCA and RFA exhibits higher values, 5.09% and 9.0% compared to natural coarse aggregate (NCA) and natural fine aggregate (NFA), 0.87% and 1.01%, respectively. The sp. gravity of RCA and RFA is a lower value of 2.41 and 2.34 vs. 2.68 and 2.64 for NCA and NFA, respectively. Physical and chemical treatment methods can improve the quality of RA by reducing water absorption capacity and increasing sp. gravity. Among all the treatment methods, pozzolanic slurry treatment is the most economical method. Recycle and reuse of RA in roads and structural applications are recommended for improved waste management.