Mechanical and durability properties of recycled aggregate concrete: effect of recycled aggregate properties and content

Togay Ozbakkaloglu, Aliakbar Gholampour, Tianyu Xie

Research output: Contribution to journalArticle

46 Citations (Scopus)

Abstract



The use of recycled concrete aggregates as an alternative aggregate material in concrete has been studied over the past two decades. It is now recognized that the recycled aggregate concrete (RAC), where natural aggregates are replaced with recycled concrete aggregates, is a promising technology for conserving natural resources and reducing the environmental impact of concrete. This paper presents a study on mechanical and durability properties of concretes manufactured with recycled aggregates of different sizes and contents. A total of 14 batches of RACs were manufactured. Tests were undertaken to establish the compressive strength, elastic modulus, flexural strength, splitting tensile strength, workability, drying shrinkage, and water absorption of each batch. Test parameters comprised the recycled aggregate replacement ratio, size of coarse aggregates, and mixing method used in the preparation of concrete. The results indicate that the compressive strength is not the only decisive factor on mechanical and durability-related properties of RACs. It is shown that the properties of different RAC mixes of the same compressive strength are affected by the size and content of the coarse aggregates.
Original languageEnglish
Article number04017275
Number of pages13
Journal Journal of Materials in Civil Engineering
Volume30
Issue number2
DOIs
Publication statusPublished - Feb 2018
Externally publishedYes

Keywords

  • Recycled aggregate concrete
  • Recycled Aggregate Properties
  • Durability
  • Mechanical
  • Properties
  • Mechanical properties
  • Compressive strength
  • Water absorption
  • Shrinkage
  • Recycled aggregate concrete (RAC)
  • Recycled concrete aggregate

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