air entraining การใช้

• Air entraining agents have been the salvation of wet cast concrete as it pertains to its durability.
• The AFIT instrument quantifies the dynamic foaming properties of air entraining agents, surfactants and foaming materials.
• Air entraining was introduced in the 1930s and most modern concrete, especially if subjected to freezing temperatures, is air-entrained.
• A concrete maker introduces the bubbles by adding to the mix an air entraining agent, a surfactant ( surface-active substance, a type of chemical that includes detergents ).