Study on the mechanical and environmental properties of concrete containing cathode ray tube glass aggregate | The BCIT cIRcuit

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

Mora, R., James, J., Romero, D., & Hays, C. D. (2013). Study on the mechanical and environmental properties of concrete containing cathode ray tube glass aggregate. Waste Management, 33(7), 1659-1666. doi:https://doi.org/10.1016/j.wasman.2013.03.018

Description

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., Peer reviewed, Peer reviewed article, Received 26 July 2012 ; Accepted 24 March 2013 ; Available online 28 April 2013., Durability, CRT, Heavy metals, Glass recycling, Waste management, Sustainable concrete