Jenkins said the county testing lab would not have detected the air entrainment issue.

Air entrainment' is blowing little bubbles in the concrete before it sets.

At the base of each module, there is a pipe to act as an air entrainment skirt.

The air entrainment stacks were each fitted with two additional connections into the tanks.

It then weakened as wind shear increased and dry air entrainment occurred.

Without adequate air entrainment, concrete cracks and crumbles more easily.

Constructed to increase water depth in order to reduce vortex formation and air entrainment.

An 'air entrainment' agent is used in the mix to provide workability and increased frost protection.

Includes active anti-foam agents to reduce incidence of damage due to air entrainment during use.

Air entrainment is the intentional creation of tiny air bubbles in concrete.

Thereafter, unfavorable conditions, including dry air entrainment caused the storm to weaken slightly.

Air Entrainment: For best results, air content of the concrete should not exceed 3%.

This is due to the potential for non-ideal hydraulic conditions such as partially full pipe flow and air entrainment.

Air entrainment on stepped-channel chutes is also recognized for its contribution to the oxygen transfer.

Depending on the tunnel length, both air entrainment and air detrainment processes are significant.

"Air entrainment" - The intentional entrapment of air bubbles into concrete.

Key words: air entrainment, aerator, scale effect, jet length, cavity subpressure.

However, in the production process, air entrainment occurs without the use of an admixture, and prolonged moist curing is not required.

Later air entrainment technology made boards lighter and less brittle, then joint treatment materials and systems also evolved.

However, vertical wind shear and dry air entrainment weakened Gordon to a tropical storm later that day.

That included checking the content of the concrete mix for the proper level of what construction professionals call "air entrainment."

Key words: bottom aeration devices, aerators, spillways, air entrainment, detrainment.

An aerator without a ramp may be subjected to excessive pressure fluctuations at the impact region due to insufficient air entrainment.

Air entrainment admixtures are often used in freeze-thaw climates to minimize the possibility of frost damage.

This paper investigates sharp-crested weirs having different cross-sectional geometry and their effect on the air entrainment rate.