Foamable glass composition and glass foam.

摘要

Foamable glass composition suitable for making glass foam, which starts from water glass material and contains 100 parts by weight of anhydrous modified sodium silicate and 0.5-4 parts by weight of CaC0<Sub>3</Sub> as a foaming agent. A foam in the closed-cell form, which is light is in weight, and excellent water resistance, strength and heat resistance, is obtained, wherein C0<Sub>2</Sub> in a gas existing in the cell is 50% by volume or more.