Acid brick

Acid brick or acid resistant brick is a specially made form of masonry brick that is and .^[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[]

Acid brick comes in multiple varieties. The most frequently used variety is . Others include fireclay, , and .

References[]