Laboratory testing and field experience have shown that highway concrete should be properly air entrained to resist the action of freezing and thawing, particularly in wet climates. TRB hosted a ...

Hard Trowel Finish on Air-entrained concrete (Position Statement #1) published by the American Society of Concrete Contractors, 2025 S. Brentwood Blvd, Suite 105, St. Louis, MO 63144 | Phone: 314 ...

For example, a stationary narrow fog entrains approximately 10,000 cfm of air. If that fog stream is rotated in an O-pattern, the air entrainment can increase to values of more than 15,000 cfm.

R. S. Brewster, Effect of Vibration Time upon Loss of Entrained Air from Concrete Mixes As shown in Figure 4, the greater the slump, air content and vibration time, the more entrained air is lost.

Which indicates that fresh state entrained air due to PEG-PVA addition is not stable and air gets released during concrete consolidation. PEG-PVA-modified and AEA samples were proven to improve freeze ...

Thinking this air-entrained concrete mix would set in an affordable period of time, the contractor next added water to the concrete to maintain fluidity and ease of use. However, the surplus water ...

Letter Published: 01 February 1966 Surface Entrainment of Air by a Water Jet A. T. SHERIDAN Nature 209, 799–800 (1966) Cite this article ...