Recycling of glass waste into foam glass: A review

Abstract

Waste glass can be transformed into a foam by addition of suitable substance (foaming agent) which generated gaseous products by decomposition or reaction at temperatures above its softening temperature (corresponding to a viscosity of 106.6 Pas). This paper provides a concise overview of the latest research in the field of improving the glass foam production process. Some of the possibilities for reducing the environmental impact of glass foam production are also presented. Some of the new production techniques, new foaming agents as well as the possibility of including other solid waste in the composition of glass foams are presented. At the end, the glass foam produced in the Laboratory for glass and ceramics, Institute for Technology of Nuclear and other Mineral Raw Materials, was shown.