Sustainable reuse of waste glass and incinerated sewage sludge ash in insulating building products: Functional and durability assessment

Jian Xin Lu, Y. Zhou, Pingping He, Shengnan Wang, Peiliang Shen, Chi Sun Poon

Research output: Journal article publicationJournal articleAcademic researchpeer-review

9 Citations (Scopus)

Abstract

Using thermal insulating materials for internal walls construction is an effective way for improving the energy-saving of buildings. This study reports the development a green concrete partition wall block using recycled glass as aggregates and incinerated sewage sludge ash (ISSA) as a partial replacement of Portland cement. Functional (density, porosity, compressive strength, thermal conductivity) and durability (drying shrinkage, fire resistance) performances were assessed. The experimental results showed that the eco-friendly blocks had sufficiently high strength to serve as a building partition material. Furthermore, the densities of the blocks were reduced with the incorporation of the glass aggregates and ISSA. Encouragingly, the combined use of glass aggregates and ISSA significantly reduced the drying shrinkage of the partition blocks. In terms of thermal insulation, the thermal conductivity of the blocks decreased considerably when the recycled glass and the ISSA were utilized simultaneously. Especially, the fire resistance of the partition blocks was improved effectively when the glass aggregates were used to totally replace the fine aggregates. Based on the findings, joint applications of waste glass and ISSA in producing partition wall blocks are appealing as it not only provides an alternative approach to reuse the wastes, but also achieve superior performance as an insulating wall material.

Original languageEnglish
Article number117635
JournalJournal of Cleaner Production
Volume236
DOIs
Publication statusPublished - 1 Nov 2019

Keywords

  • Fire resistance
  • Incinerated sewage sludge ash (ISSA)
  • Partition blocks
  • Thermal conductivity
  • Waste glass

ASJC Scopus subject areas

  • Renewable Energy, Sustainability and the Environment
  • Environmental Science(all)
  • Strategy and Management
  • Industrial and Manufacturing Engineering

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