Acid brick
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Acid brick or acid resistant brick is a specially made form of masonry brick that is chemically resistant and thermally durable.[1] Acid brick is created from high silica shale and fired at higher temperatures than those used for conventional brick. Some manufacturers create the brick by baking it for over a week. It has an average compressive strength of approximately 23,000 PSI.
The ASTM specification C-279 creates specifications for acid brick properties. Acid brick is not resistant against hydrofluoric acid or strong alkali.
Varieties
[edit]Acid brick comes in multiple varieties. The most frequently used variety is red shale. Others include fireclay, silica brick, and carbon brick.
References
[edit]- ^ Sulphuric Acid on the Web: Knowledge for the Sulphuric Acid Industry. Retrieved December 5, 2016.