Webfill before landfill: an e-commerce model for waste exchange in Hong Kong

Zhen Chen, Heng Li, Conrad T. C. Wong

Research output: Contribution to journalArticlepeer-review

15 Citations (Scopus)


Although the Trip-ticket System (TTS) has been implemented to manage construction and demolition (C&D) waste in Hong Kong for over three years, problems still exist in the landfill disposal of the C&D waste. For example, it is reported that fees are difficult to collect from waste transporters for tipping the C&D waste at the landfill site. Based on an examination of the flexibility of the TTS, this paper proposes an e-commerce model, namely the Webfill system, in order to enhance the TTS. The computational structure of the Webfill system is described and the usefulness of Webfill is evaluated based on a simulation which provides a direct comparison between the existing TTS and the Webfill-enhanced TTS.

Original languageEnglish
Pages (from-to)27-43
Number of pages17
JournalConstruction Innovation
Issue number1
Publication statusPublished - 1 Mar 2003
Externally publishedYes


  • construction and demolition
  • e-commerce
  • Hong Kong
  • simulation
  • trip-ticket system (TTS)
  • waste exchange


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