Portland-Fly Ash Cement. CEM II/B-V 42,5N

Sulfacrete is a Portland-fly ash cement with a high sulfate resistance and a moderate heat of hydration conforming to BS EN 197-1 CEM II/B-V 42,5N. 


  1. Reduce Sulfate Attack

    Reducing damage to concrete, mortar and grout exposed to sulfate attack and minimising the risk of alkali silica reaction.
  2. Thermal Stress

    Reducing the thermally-induced stresses in large pours.
  3. Aggressive environment

    Suitable for concrete exposed to the marine environment.


  • Concreting
  • Mortar Jointing & Pointing
  • Repairing Chimneys
  • Brownfield Sites

Technical information

Portland-fly ash cement with special sulfate-resisting properties for use in all sulfate conditions (except DC-4m), as defined in Building Research Establishment Special Digest 1: 2005 and BS 8500: Concrete – Complementary British Standard to BS EN 206-1.

Equivalent sulfate resistance to BS 4027 SRPC.

Reduced alkali (declared mean equivalent Na2O not exceeding 0.6%).

Reduced water demand.

Slower early age strength development than Portland cement (CEM I).

Better resistance to chloride ingress than Portland cement (CEM I).

  • Achillies Building Confidence
  • Carbon Trust Standard

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