Study on the mechanical and environmental properties of concrete containing cathode ray tube glass aggregate

Diego Romero, Jacqueline James, Rodrigo Mora, Carol D. Hays

Research output: Contribution to journalArticle

31 Scopus citations

Abstract

Cathode ray tube (CRT) glass is considered a hazardous material due to its lead toxicity. In addition, current disposal practices are being phased out due to their adverse environmental impacts. In this project, CRT glass was used as a fine aggregate replacement in concrete. Life-cycle material characterization was conducted by evaluating the durability and strength of the CRT-Concrete. Leaching tests were also conducted to investigate whether the material meets drinking water limits for Pb. Test results show that the plastic state of the CRT-Concrete was affected by the angularity of the glass particles. Moreover, the compressive strength of CRT-Concrete met and exceeded that of the control specimen. However, CRT-Concrete was susceptible to expansive alkali-silica reactions when more than 10% CRT replacement was used. Environmental leaching results show that lead concentrations from CRT-Concrete are below the drinking water limits depending on the CRT volume replacement and if biopolymers are used.

Original languageEnglish (US)
Pages (from-to)1659-1666
Number of pages8
JournalWaste Management
Volume33
Issue number7
DOIs
StatePublished - Jul 1 2013

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Keywords

  • CRT
  • Durability
  • Glass recycling
  • Heavy metals
  • Sustainable concrete
  • Waste management

ASJC Scopus subject areas

  • Waste Management and Disposal

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