Recycling of incinerated sewage sludge ash and cathode ray tube funnel glass in cement mortars

Jiang Shan Li, Ming Zhi Guo, Qiang Xue, Chi Sun Poon

Research output: Journal article publicationJournal articleAcademic researchpeer-review

52 Citations (Scopus)


For comparison purposes, fly ash (FA) and ground granulated blast furnace slag (GGBS) were also used. Fresh and hardened properties of the cement mortars, as well as potential lead (Pb) leaching were investigated. The experimental results showed that the incorporation of ISSA to replace cement reduced the workability, hardened density and compressive strength but increased the water adsorption, drying shrinkage and flexural strength of the mortars. The influence of the different mineral admixtures on the properties of cement mortars was closely related to their pozzolanic activities and water adsorption abilities. ISSA was superior to FA and GGBS in enhancing the flexural strength and reducing Pb leaching of the mortar samples. It is noteworthy that Pb leaching from the mortar samples prepared with both ISSA and CRT glass was greatly reduced and it complied with the local regulatory limits, and increasing the replacement ratio of cement by ISSA led to a corresponding reduction in the Pb leachate concentrations mainly due to the adsorption and precipitation of Pb by ISSA.
Original languageEnglish
Pages (from-to)142-149
Number of pages8
JournalJournal of Cleaner Production
Publication statusPublished - 20 May 2017


  • Cathode ray tubes funnel glass
  • Cement mortar
  • Incinerated sewage sludge ash
  • Pb leaching

ASJC Scopus subject areas

  • Renewable Energy, Sustainability and the Environment
  • General Environmental Science
  • Strategy and Management
  • Industrial and Manufacturing Engineering


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