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  • What is a superplasticizer used for?
  • Superplasticizers (SPs), also known as high range water reducers, are additives used for making high strength concrete or to place self-compacting concrete. Plasticizers are chemical compounds enabling the production of concrete with approximately 15% less water content. Superplasticizers allow reduction in water content by 30% or more.
  • How does super-plasticizer affect Slump values?
  • The time when the super-plasticizer is added to concrete affects the slump values. By adding the super-plasticizer with the mixing water, the slump value is increased considerably. Even higher slump values are possible by the addition of the admixture a few minutes after the concrete is mixed with water.
  • When were superplasticizers used?
  • In North America they were used from 1974.1’1 The advantages derived by the use of superplasticizers include pro-duction of concrete having high workability for easy placement, and pro- duction of high strength concrete with normal workability but with a lower water content.
  • What is the difference between a plasticizer and a superplasticizer?
  • Plasticizers are chemical compounds enabling the production of concrete with approximately 15% less water content. Superplasticizers allow reduction in water content by 30% or more. These additives are employed at the level of a few weight percent. Plasticizers and superplasticizers also retard the setting and hardening of concrete.
  • What are the ASTM standards for superplasticizers?
  • The ASTM standards C 494-92 and C 1017-92 provide information on the specifications for superplasticizers. Two types of superplasticizers, Type F water-reducing, high range, and Type G water- reducing, high range, and retarding, are described.
  • Can superplasticizers be used to produce jlowing concrete?
  • To produce jlowing concrete. Superplasticizers have been used to produce self-compacting, self-leveling flowing concretes. In this application, no attempt is made to reduce either the water-to-cement ratio or the cement content.