DURASPRED AEA is a dark brown liquid based on polymeric resin. It produces microscopic airbubbles evenly distributed throughout the concrete.Standards :Conforms to IS : 9103-1979 and ASTM C 260Uses :It is most suitable for concrete for Concrete Runways and Bridges, Canal linings, Dam reservoir, Tunnel linings etc.Features :* Increased durability : Resistant to attack by frost and deicing salts, thermalmovent. Crack free concrete.* Increased cohesion : Increased pumpability with lean mixes. The concrete intransit will show no segregration.* High workability : Around 5 to 9% water reduction is possible. Impartsworkability retention.* Less vibrating effort through the ball bearing action of the air bubbles.* Most economical, as it increases the yield of concrete by the percentage of air entrained.* Reliability produced under strict quality control system, quality shall never vary.* Improves impermeability.Application :DURASPRED AEA should be added along with gauging water. The quantity of air entrained will varywith respect to the proportion of sand and the plasticity of the concrete mix. A site trial is alwaysadvisable for the entrained air content with an air meter and accordingly dosage is adjusted to keep the air content within required limit. Approved mix design of concrete with air entraining agent should be followed.Dosage :The dosage of DURASPRED AEA will vary according to mix design and aggregate grading. But as aguide line, dosage = 15-60 ml per 50 kg cement. This additioin rate will have to be increased, if more fine material like more cement or Fly Ash is used in the concrete.