Plasticizers: Types, Uses, Classification, Selection & Regulation

                                               
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Admixtures | Super Plasticizers - RussTech

                                               
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Superplasticizer: Types, Advantages & Disadvantages

                                               
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polycarboxylate super plasticizer for high strength dry mix

                                               
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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.
  • 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.
  • Which superplasticizer admixture is better?
  • Based on the findings, out of three superplasticizers, PC—based admixture showed a better improvement in strength aspects compared to other mix. Compressive strength of UHPC (a) SNF admixture (b) SMF admixture (c) PC admixture
  • What is a polycarboxylate superplasticizer?
  • Polycarboxylate superplasticizer stabilizing a colloidal suspension through steric interactions thanks to its lateral chains. Note: the PCE molecules are adsorbed onto positively-charged cement particles (tricalcium aluminate (C3A) mineral phase). The polymers used as plasticizers exhibit surfactant properties.
  • What are the different types of superplasticizers?
  • According to their dispersing functionality and action mode, one distinguishes two classes of superplasticizers: Steric effects: Polycarboxylates - ether (PCE) synthetic polymers bearing lateral chains (third generation).
  • Why do Superplasticizers have split tensile strength compared to compressive strength?
  • Pre-cracking is influenced by the elastic shear transfer mechanism whereas post-cracking is due to the combined effects of matrix stress softening and fiber bridging . By assessing the strength in critical aspects of superplasticizers, the results of split tensile strength are parallel to the compressive strength.