air entrainment

noun

: the incorporation in concrete or mortar of minute air bubbles (as by addition of soap or grease) to increase resilience and resistance to wear and weathering

air-entrained adjective

Air-entrained concrete is generally easier to work with and can be used even if not specifically called for in the plans and specifications.

—Gil L. Taylor, Construction Codes and Inspection Handbook, 2006

Word History

First Known Use

1949, in the meaning defined above

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