Jun 29, 2022 · An air-entrained mix is best to use for concrete projects where the surface will be exposed to the freeze-thaw cycle during the winter months. Even in climates where the winters aren’t as harsh, but still reach occasional temperatures below freezing, using air-entrained concrete is a safe idea.

Air-entrained portland cement is a special cement which has air bubbles introduced in the cement or concrete that provides the space for expansion of minute droplets of waters in the concrete due to freezing and thawing and protects from cracks and damage of concrete.

Air entraining was introduced in the 1930s and most modern concrete, especially if subjected to freezing temperatures, is air-entrained. The bubbles contribute to workability by acting as a sort of lubricant for all the aggregates and large sand particles in a concrete mix.

Apr 13, 2021 · What is Air Entrained Concrete? Air entrained concrete contains microscopic air bubbles that help alleviate internal pressure on the concrete by providing small pockets for water to expand into when exposed to freeze-thaw conditions.

Mar 28, 2023 · Most specifications for exterior decorative concrete flatwork require air entrainment, which involves the use of an admixture to intentionally incorporate tiny air bubbles throughout the concrete matrix to improve its durability to freeze-thaw exposure.

Aug 23, 2024 · Air-entraining cement adds tiny air bubbles to concrete, improving workability, durability, and resistance to freeze-thaw cycles, ideal for roads, bridges.

With both plasticizing (decrease in the water–cement ratio) and air-entraining effects (increase in the amount of entrained air content), the frost resistance of concrete increases, scaling decreases exponentially, and it is possible to obtain great frost resistance for cement-based material.

It is an admixture that causes the development of a system of microscopic air bubbles in cement paste during mixing, usually to increase its resistance to freezing and thawing and to improve workability (ACI 212.3R).

Nov 22, 2022 · What is Air Entrained Concrete? Air Entrained Concrete is like the normal concrete but has an additional feature, which is the introduction of controlled amounts of air into concrete in the form of microscopic bubbles.

Jun 21, 2022 · Utilizing air-entraining Portland cement or air-entraining mechanisms such as admixture, air entrainment is accomplished in concrete. The quantity of air in such concrete is commonly between 4 to 7% of the volume of concrete.