Parametric study of functionally graded concretes incorporating steel fibres and recycled aggregates

Ricardo Chan*, Xingzi Liu, Isaac Galobardes

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

47 Citations (Scopus)

Abstract

Even presenting several drawbacks, especially regarding environmental impact, concrete is the most consumed human-made material worldwide. In this sense, incorporating steel fibres and recycled aggregates, and applying the functionally graded material concept may help in the sustainability of concrete. In this paper, relationships between mechanical properties, embodied CO2, cost, among other parameters of functionally graded concretes (FGC) incorporating steel fibres and recycled aggregates were studied. The test results show that the FGC mechanical performance is inferior to fibre reinforced concrete but superior to fibre reinforced recycled aggregate concrete. Therefore, the FGC studied could be used in lower loading capacity applications, such as car parks and cycling lanes. In terms of embodied CO2 and cost, the FGC studied are more affected by the content of fibre than the content of recycled aggregates. Also, equations correlating design and sustainability parameters with reinforced thickness and content of fibre were proposed.

Original languageEnglish
Article number118186
JournalConstruction and Building Materials
Volume242
DOIs
Publication statusPublished - 10 May 2020

Keywords

  • Correlation
  • Fibre reinforced concrete
  • Fibre reinforced recycled aggregate concrete
  • Functionally graded concrete
  • Parametric study
  • Recycled aggregate concrete
  • Sustainability

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