Foam Glass
foam glass
[′fōm ‚glas] (materials)
A light, black, opaque, cellular glass made by adding powdered carbon to crushed glass and firing the mixture.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.
Foam Glass
a cellular material that is obtained by heating to fusion finely ground glass powder with a pore-forming material, such as coke, chalk, or dolomite. It is a good thermal and acoustic insulator and is easily worked and cemented. The average density varies from 100 to 700 kg/m3.
Foam glass is used for the thermal insulation of refrigeration cars and underground piping and as a buoyant material in rescue devices and pontoons. Filters for acids and alkalies are made from foam glass with open pores.
The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.
foam glass, cellular glass, expanded glass
A thermal insulation made by foaming softened glass to produce many sealed bubbles; has a closed-cell structure. Molded into board and blocks, usually with a density of about 9 to 10 lb per cu ft (14.4 to 16 kg per cu m).
McGraw-Hill Dictionary of Architecture and Construction. Copyright © 2003 by McGraw-Hill Companies, Inc.