Comparing the use of sewage sludge ash and glass powder in cement mortars

Zhen Chen, Chi Sun Poon

Research output: Journal article publicationJournal articleAcademic researchpeer-review

16 Citations (Scopus)

Abstract

This study explored the suitability of using sewage sludge ash (SSA) and mixed-colored glass powder (MGP) as construction materials in cement mortars. Positive findings from this study may help promote the recycling of waste SSA and MGP in construction works. The results indicated that the SSA decreased while MGP improved the mortar workability. The SSA exhibited very low pozzolanic activity, but the cement mortar prepared with 20% SSA yielded strength values slightly superior to those of the glass mortars due to its water absorption ability. MGP can serve as a pozzolan and when 20% of cement was replaced by MGP, apparent compressive strength gains were found at later curing ages. The SSA could be used to mitigate ASR expansion while the MGP was superior in resisting drying shrinkage.
Original languageEnglish
Pages (from-to)1390-1398
Number of pages9
JournalEnvironmental Technology (United Kingdom)
Volume38
Issue number11
DOIs
Publication statusPublished - 3 Jun 2017

Keywords

  • alkali-silica reaction
  • cement mortars properties
  • glass powder
  • recycling
  • Sewage sludge ash

ASJC Scopus subject areas

  • Environmental Chemistry
  • Water Science and Technology
  • Waste Management and Disposal

Cite this