A condition whereby gas (usually air) is dispersed in a liquid ( 0301)
The incorporation of air in the form of bubbles dispersed in a fluid. Common when an improper amount of antifoam agent is added to reduce foaming.
The intentional introduction of air on the form of minute, disconnected uniform bubbles (less than 1mm) during the mixing of Portland cement plaster to improve cohesion and workability, and after cure, to improve in durability during freeze thaw cycles. Created with an admixture specially designed for use in Portland cement. Common household detergent is not a recognized admixture.
microscopic air bubbles in the cement paste that allows space for expanding moisture during freeze cycles.
millions of tiny air bubbles that are intentionally placed (or entrained) into the concrete mix by using a chemical admixture. These air bubbles provide the concrete with the ability to resist damage from freezing and thawing cycles. A typical desirable air content for residential concrete would be in the range of 5 - 7% (by volume).
Microscopic air bubbles in concrete. Air entraining admixtures are frequently used in exterior concrete to increase its entrained air content in order to improve concrete's resistance to freeze-thaw damage. MetaMax® is compatible with air entraining admixtures.
The incorporation of air in the form of bubbles as a dispersed phase in the bulk liquid. Air may be entrained in a liquid through mechanical means and/or by release of dissolved air due to a sudden change in environment. The presence of entrained air is usually readily apparent from the appearance of the liquid (i.e., bubbly, opaque, etc.) while dissolved air can only be determined by analysts.
Adding an air-entraining admixture to fresh concrete to cause the development of microscopic air bubbles. Helps to improve the freeze-thaw resistance and durability of hardened concrete.
Microscopic air bubbles introduced in to the concrete to improve freeze/thaw durability.
Air entrainment is the intentional creation of tiny air bubbles in concrete. The bubbles are introduced into the concrete by the addition to the mix of an air entraining agent, a surfactant (surface-active substance, a type of chemical that includes detergents). The air bubbles are created during mixing of the plastic (flowable, not hardened) concrete, and most of them survive to be part of the hardened concrete.