title: Study on the mechanical and environmental properties of concrete containing cathode ray tube glass aggregate.
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.
authors.affiliation: Department of Civil, Architectural, and Environmental Engineering, University of Miami, 1251 Memorial Drive Room MEB 325, Coral Gables, FL 33146, USA. d.romero3@umiami.edu
authors.forename: Diego
authors.initials: D
authors.lastname: Romero
authors.forename: Jacqueline
authors.initials: J
authors.lastname: James
authors.forename: Rodrigo
authors.initials: R
authors.lastname: Mora
authors.forename: Carol D
authors.initials: CD
authors.lastname: Hays
mesh_terms: D055984:Cathode Ray Tube; D019245:Compressive Strength; D003252:Construction Materials; D060766:Drinking Water / Q000592:standards; D005898:Glass; D006256:Hazardous Waste / Q000032:analysis*; D006863:Hydrogen-Ion Concentration; D007854:Lead / Q000633:toxicity; D055595:Mechanical Phenomena; D059027:Recycling; D012037:Refuse Disposal / Q000379:methods
chemical_list: D060766:Drinking Water; D006256:Hazardous Waste; D007854:Lead