Expanded Products from Glasses Foam Glass

3 Expanded Products from Glasses (Foam Glass) 

Perlite expands at ca. I000 C upon evaporation of entrapped water 

Both naturally occurring and industrial glasses, preferably waste glass, are suitable for the manufacture of bloated products from glasses. 

Perlite is a glassy volcanic rock with water trapped in its fine pores. The rock is pulverized and then heated to ca. 1000°C, whereupon the material melts and the entrapped water evaporates bloating the molten glass to many times its initial volume. 

Advantages of expanded products low weight, good insulation properties 

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S.3.6.3 Expanded Products from Glasses (Foam Glass)... 

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