Acid and heat resistant mortars for cellular glass bodies

Compositions: coating or plastic – Coating or plastic compositions – Metal-depositing composition or substrate-sensitizing...

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C04B 3514

Patent

active

040563995

ABSTRACT:
A mortar composition for use in bonding cellular glass bodies includes a mixture, as expressed by percentage weight, of finely powdered reactive glass, such as cellular glass powder, in the range of between about 26 to 48 percent, inert aggregate filler in the range of between about 26 and 61 percent, and a silica sol binder in the range of between about 13 and 26 percent. The cellular glass powder has substantially the same composition as the cellular glass bodies being bonded. The inert aggregate filler preferably comprises round grained silica sand having a particle size wherein substantially all of the particles pass through a U.S. Standard #35 Screen and coarse cellular glass particles wherein substantially all the particles pass through a U.S. Standard #35 Screen. The ratio of finely powdered reactive glass to sol binder is maintained between about 1.8 to 1 and 2.0 to 1. By controlling the particle size of the finely ground cellular glass powder, the sol demand is substantially minimized. Furthermore, the finely ground cellular glass powder is operative as a setting agent in place of conventionally known setting agents.

REFERENCES:
patent: 3957520 (1976-05-01), Linton

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