Porous, lightweight, particulate aggregates and process of manuf

Details Porous, lightweight, particulate aggregates and process of manuf Porous, lightweight, particulate aggregates and process of manuf

1978-05-01

1979-07-24

Poer, James

Compositions: coating or plastic

Coating or plastic compositions

Metal-depositing composition or substrate-sensitizing...

106 75, C04B 3102

Patent

active

041621662

ABSTRACT:
A porous lightweight particulate aggregate for use in concretes, mortars, building blocks and other building elements, comprises expanded and vitrified low alkalinity particles of a material composed of an alkali metal silicate having an M.sub.2 O/SiO.sub.2 ratio of from about 1:2 to 1:4 wherein M is an alkali metal; silica in an amount of from about 0.1 to about 50% by weight of said alkali metal silicate; and an alkaline earth metal silicate in an amount of from 0.1 to 200% by weight of said alkali metal silicate, said particles having a density of not more than about 60 g/dm.sup.3 and a compression strength of up to about 275 kg/cm.sup.2 and having an expansion ratio of up to 15 times their original collapsed volume. Suitable fillers and additives may be added to said aggregate to provide specific and useful properties for a variety of uses thereof.

REFERENCES:
patent: 3990901 (1976-11-01), Engstrom et al.

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