An Attempt to Maximize the Use of Used Cooking Oil and Fly Ash in the Production of Green Roofing Tile

Teoh Wei Ping, Chee Swee Yong, Noor Zainab Habib, Ng Choon Auna*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)
27 Downloads (Pure)


This study introduces a novel attempt of utilizing used cooking oil (UCO) and fly ash in the production of green roofing tile, namely UCO-GRT. UCO was utilized as an alternative binder to fully replace the cement and clay, while fly ash was used as a fine aggregate instead of virgin sand. This can maximize the percentage of waste substitution in the manufacturing process, consequently reducing the waste disposal issues encountered in Malaysia. The optimization process was carried out to investigate the optimal manufacturing parameters, by considering the curing duration, the composition of UCO and fly ash, and the composition of catalyst incorporated. The mechanical properties of UCO-GRT produced, including density, dry and wet transverse strength, percentage of water absorption, and permeability have been investigated. Findings reveal that the utilization of catalysed UCO and fly ash solely in the production of roofing tiles is feasible. The optimized UCO-GRT fulfilled the basic requirements of a high-profile roofing tile as per ASTM standards. The embodied carbon and embodied energy of the novel roofing tile was also studied and compared with the cementitious and clay roofing tiles.

Original languageEnglish
Pages (from-to)273-281
Number of pages9
JournalInternational Journal of Sustainable Construction Engineering and Technology
Issue number1
Publication statusPublished - 16 May 2022


  • fly ash
  • green production
  • roofing tile
  • Used cooking oil

ASJC Scopus subject areas

  • Environmental Engineering
  • Civil and Structural Engineering
  • Building and Construction


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