Foam Glass

foam glass

[′fōm ‚glas]
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 It might be outdated or ideologically biased.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.
References in periodicals archive ?
M2 PRESSWIRE-July 29, 2019-: Foam Glass (Open Cell and Closed Cell) Market - Global Forecast to 2024
Good growth is also expected for foam glass in thermal insulation applications, particularly as an insulating base for liquified natural gas tanks.
These lightweight foam glass bricks remove paint, varnish, wax, rust and mineral stains just as effectively, and without the chemicals and odors, of harsher alternatives.