Properties of Concrete Incorporating Fine Recycled Aggregate

This article reports on a study of the properties of concrete containing fine recycled aggregate, such as crushed concrete (CC) or crushed brick (CB), with particles less than 5mm in diameter. The water/cement (w/c) ratio was kept constant for all mixes. The fine aggregate in concrete was replaced with 0%, 25%, 50% and 100% CC or CB. General results showed a strength reduction of 15 to 30% for concrete containing CC. However, concrete incorporating up to 50% CB exhibits similar long-term strength to that of the control. Even at 100% replacement of fine aggregate with CB, the reduction in strength is only 10%. In addition, an increase in CC content causes an increase in shrinkage. For CB, an initial increase in shrinkage occurs at low CB content; as the CB content increases, the shrinkage begins to decline. The expansion of concrete increases for concrete containing CC or CB.

Language

  • English

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Filing Info

  • Accession Number: 01000519
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Jun 2 2005 9:12AM