Reutilisation of hazardous spent fluorescent lamps glass waste as supplementary cementitious material
Ángel M. Pitarch, Lucía Reig, Antonio Gallardo Izquierdo, Lourdes Soriano, M.V. Borrachero, S. Rochina
Abstract
Spent fluorescent lamps glass (SFLG) waste, manually and mechanically processed in a lamps waste treatment plant, was used to partially replace up to 50 wt% Portland cement (PC). Both waste types exhibited similar pozzolanic activity. The mortars containing up to 35 wt% SFLG met the specifications for other pozzolanic materials (e.g. fly ash) and, after 90 curing days, their compressive strength values were similar to or higher than those of the 100% PC sample (58.8 MPa). Our results provide an alternative reutilization process for this hazardous waste to reuse SFLG as-received (no washing to reduce mercury) and contributes to less PC use.
Topics & Concepts
CementitiousHazardous wasteWaste managementMercury (programming language)Curing (chemistry)Materials scienceGlass recyclingPozzolanEnvironmental scienceCementComposite materialPortland cementProgramming languageEngineeringComputer scienceConcrete and Cement Materials ResearchRecycling and utilization of industrial and municipal waste in materials productionBuilding materials and conservation