Sewage Sludge Ash Characteristics and Potential for Use in Concrete

Ciaran Lynn, Ravindra Dhir, Gurmel Ghataora, Roger West

Research output: Contribution to journalArticlepeer-review

118 Citations (Scopus)
1483 Downloads (Pure)


Sewage sludge ash (SSA) use in concrete related applications is assessed through systematic review involving analysis and evaluation of the global literature found published since 1983. The material characteristics indicate potential for various applications: in small dosages as raw feed in Portland cement production, as fine and filler aggregates, or in ground form as cement component, with manageable effects on performance. Using manufactured SSA aggregate, concrete strength suitable for structural applications and lightweight properties comparable to Leca are attainable. SSA can be used in bulk, in controlled low strength materials (CLSM), aerated and foamed concretes. Reported case studies give encouraging signals.
Original languageEnglish
Pages (from-to)767-779
JournalConstruction and Building Materials
Early online date3 Sept 2015
Publication statusPublished - 15 Nov 2015


  • Sewage sludge ash
  • Systematic Review
  • Concrete


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