BLOWING AGENT FOR PRODUCING FOAM GLASS FROM GLASS POWDER AND PROCESS FOR ITS MANUFACTURE

摘要

The swelling agent is provided to obtain glass foam formed mainly of closed cells of pulverized glass. It is provided in the form of a colloidal dispersion, stable, that can be diluted with water. It contains water, soluble glass and a liquid hydrocarbonate compound, soluble in the soluble glass, preferably glycerin. It also contains, preferably, an alkaline bentonite, for example sodium bentonite, in an appropriate amount from 1 to 10% by weight. The swelling agent provides a particularly thin cell foams, of regular size and showing a good pressure resistance.