2.3. Admixtures
The most important application of air-entraining admixtures is for concrete
mixtures designed to resist freezing and thawing cycles. A side effect from entrained
air is the improved workability of concrete mixtures, particularly those containing
less cement and water, rough textured aggregates or lightweight
aggregates. Air entrainment is, therefore, commonly used in making mass concrete
and lightweight concrete mixtures [7].