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Trojan Cements

Our Trojan cements generally contain between 21% and 35%  fly ash, (Pulverised Fuel Ash). Our primary product is Trojan T27, which contains 27% fly ash and has been designed to optimise performance in terms of workability and long-term durability, without compromising early strength.


ScotAsh's Trojan cement meets the requirements of BS EN 197-1 for CEM II A/B-V and CEM IV A/B cements. Trojan cements also meet the requirements of BS 6610 and our Trojan T27 meets the requirements of 42.5N cement.

Uses and Benefits

Blended fly ash-based cements can be used in virtually any application where Portland cement would normally be used.

As fly ash is a pozzolana, reacting with free lime liberated from the hydration of Portland cement to form additional cementitious hydrates, it continues to gain strength with time. Trojan cements offer a lower heat of hydration, reduced shrinkage and creep and are resistant to sulfate attack and reduced chloride ingress.

Recommended Construction Uses of Fly Ash Based Blended Cements


Potentially alkali-reactive aggregates
Mass concrete sections
Effluent treatment plants
Marine environments
Pumped concretes
For high quality finishes
Sulfate-bearing environments
Chloride-bearing environments
Water retaining structures


Air-entrained concrete
Thin sections
Cold weather

Use with care

In high early strength applications unless hydration is accelerated by increasing temperature

Trojan blended cements are also used for:

  • Mortars for the laying and grouting of granite setts in roads and pavements
  • As a hydraulic binder in foamed bitumen Macadam
  • As cementitious content in grout for mine void filling
  • To provide cementitious content in concrete blocks