Recycled concrete aggregate is derived from recycled construction and demolition concrete materials and is produced by crushing old concrete for subsequent utilization as aggregate in pavement construction. The primary application of RCA has been in base and subbase layers of pavement systems. This review explores the potential for utilizing RCA derived from earthquake-generated debris for sustainable pavement construction. While direct research on RCA derived from earthquake debris in pavement construction are notably limited, extensive studies on RCA from conventional construction and demolition sources demonstrates its technical viability in pavement construction. Since the fundamental properties of concrete remain the same in regardless of the source origin, findings from this RCA researches provide a deep foundation for evaluating earthquake debris utilization in pavement construction. Over the past few decades, RCA has been extensively studied as a sustainable alternative to natural aggregates in pavement engineering. Numerous studies have focused on laboratory-scale evaluations of RCA's mechanical, physical, and chemical properties, providing insights into its suitability for pavement construction. However, a significant gap remains between laboratory findings and field performance, limiting the widespread adoption of RCA in field projects. This study builds on existing knowledge by conducting an extensive literature review of RCA applications in pavement construction, with the objective of bridging the gap between laboratory results and real-world applications. The research aims to determine optimal RCA and virgin aggregate mixture criteria and propose implementation strategies for RCA in earthquake-prone regions. Key findings indicate that while laboratory tests demonstrate promising results in terms of strength and durability, field applications often reveal limitations such as compaction issues, and reduced structural capacity under heavy traffic loads. Given the devastating earthquakes in Türkiye, this research underscores the importance of utilizing RCA derived from earthquake debris as a sustainable solution for disaster waste management.

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Sustainable Use of Recycled Concrete Aggregate for Pavement Construction: A Review Bridging Laboratory Insights and Field Performance in Post-earthquake Scenarios

  • Thomas Ndeya Elago,
  • Emre Akmaz,
  • Aşkın Özocak,
  • Ertan Bol

摘要

Recycled concrete aggregate is derived from recycled construction and demolition concrete materials and is produced by crushing old concrete for subsequent utilization as aggregate in pavement construction. The primary application of RCA has been in base and subbase layers of pavement systems. This review explores the potential for utilizing RCA derived from earthquake-generated debris for sustainable pavement construction. While direct research on RCA derived from earthquake debris in pavement construction are notably limited, extensive studies on RCA from conventional construction and demolition sources demonstrates its technical viability in pavement construction. Since the fundamental properties of concrete remain the same in regardless of the source origin, findings from this RCA researches provide a deep foundation for evaluating earthquake debris utilization in pavement construction. Over the past few decades, RCA has been extensively studied as a sustainable alternative to natural aggregates in pavement engineering. Numerous studies have focused on laboratory-scale evaluations of RCA's mechanical, physical, and chemical properties, providing insights into its suitability for pavement construction. However, a significant gap remains between laboratory findings and field performance, limiting the widespread adoption of RCA in field projects. This study builds on existing knowledge by conducting an extensive literature review of RCA applications in pavement construction, with the objective of bridging the gap between laboratory results and real-world applications. The research aims to determine optimal RCA and virgin aggregate mixture criteria and propose implementation strategies for RCA in earthquake-prone regions. Key findings indicate that while laboratory tests demonstrate promising results in terms of strength and durability, field applications often reveal limitations such as compaction issues, and reduced structural capacity under heavy traffic loads. Given the devastating earthquakes in Türkiye, this research underscores the importance of utilizing RCA derived from earthquake debris as a sustainable solution for disaster waste management.