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High Early Strength Accelerator | SikaRapid® 1

Supplier: Sika Australia

SikaRapid 1 is a high early strength accelerator for concrete and mortar. It increases the early strengths of concrete without negatively influencing final strengths, or reinforcement.

Price Guide: POA


SikaRapid® 1 is recommended for use in concrete where high early strengthsare required. This includes:

  • Precast concrete, enabling efficient mould utilisation and eliminating or reducing steam curing.
  • Prestressed concrete, where early release of stressing cables is necessary.
  • Ready-mix concrete, where minimum time delays are critical.
  • Colder temperatures, where accelerated strength development is necessary.
  • In tidal conditions, where wave action may damage fresh concrete.


  • High early strength development within Sika high strength development window.
  • When used in conjunction with a superplasticiser the SikaRapid 1 will not change the properties of the concrete influenced by the superplasticiser.
  • Will not affect long term strength of the concrete.
  • Chloride free – can be used in reinforced concrete.