Optimal mix approach for recycled aggregate concrete

Vivian W. Y. Tam, Duangthidar Kotrayothar, Jianzhuang Xiao

Research output: Contribution to journalArticlepeer-review

Abstract

Based on the experimental work on recycled aggregate concrete (RAC) from different mix designs, including recycled coarse aggregate (RCA) replacement ratios, water-to-cement ratios and aggregate-to-cement ratios, this paper develops an optimal mix approach for RAC. The optimal mix approach for RAC with seven accurate prediction equations is developed in this paper using linear regression analysis and proved with high accuracy. The developed equations can be used to predict characteristic compressive, tensile and flexural strength of RAC by providing parameters of mix designs or from one of the characteristic strengths of RAC. The optimal mix approach developed in this paper can significantly help the industry to efficiently and effectively use RCA and RAC in all applications; that is, not limited to non-structural applications.
Original languageEnglish
Pages (from-to)37-45
Number of pages9
JournalConcrete in Australia
Volume42
Issue number2
Publication statusPublished - 2016

Keywords

  • concrete
  • recycling
  • aggregates (building materials)

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