Sika® Technologies for Retarder Concretes

  • Purpose of retardation: To extend the working time at a specific temperature.
  • Working time: The time after mixing during which the concrete can be correctly vibrated.
  • Free retardation: The initial setting is certain to start only after a specific time.
  • Targeted retardation: The initial setting starts at a specific time.

Critical factors influencing the retardation of concrete

  • The cement type
  • The cement content
  • The concrete temperature
  • The ambient temperature
  • The w/c ratio
  • The volume of concrete
  • Combination with other admixtures

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