Efficient utilization of recycled concrete aggregate in structural concrete

Nyok Yong Ho, Yang Pin Kelvin Lee, Wee Fong Lim, Tarek Zayed, Keat Chuan Chew, Giau Leong Low, Seng Kiong Ting

Research output: Journal article publicationJournal articleAcademic researchpeer-review

60 Citations (Scopus)

Abstract

In Singapore, the applications of recycled concrete aggregate (RCA) are limited to nonstructural concrete, road construction, and backfilling. To realize the beneficial use of RCA, an in-depth study was conducted to evaluate its use in structural concrete. This paper reports the test results of a study that is part of extensive research intended to evaluate the properties of RCA concrete produced by a proposed rational approach in concrete mix design. The key parameters studied include compressive strength, elastic modulus,and drying shrinkage. The results showed that the RCA concrete can be designed to achievecomparable compressive strength and elastic modulus, relative to the corresponding properties of concrete containing natural coarse aggregate (NCA). RCA concrete tends to exhibithigher drying shrinkage strains relative to NCA concrete, but the values are within the recommended limits.
Original languageEnglish
Pages (from-to)318-327
Number of pages10
JournalJournal of Materials in Civil Engineering
Volume25
Issue number3
DOIs
Publication statusPublished - 5 Jul 2013
Externally publishedYes

Keywords

  • Concrete mix design
  • Construction and demolition waste
  • Natural coarse aggregate
  • Recycled concrete aggregate

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Building and Construction
  • Materials Science(all)
  • Mechanics of Materials

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