The effect of firing temperature, time, batch composition and waterslag particle size upon the glass phase and foam formation as well as distribution in slag foamed glass was investigated.
Sulfur dioxide gas produced by the oxidation and reduction of metal sulfide in waterslag was attributed to foam forming agent.
Slag foamed glass matrix was mainly composed of 35-60% glass phase and melilite crystalline phase.
The increment of bentonite addition in the batch lowered the foam forming temperature in studied system.
The results showed also that the foam size distribution was broadened as the firing temperature and soaking time were increased, but was not influenced by waterslag particle size.
