From this project it can be concluded that adding SSA to concrete is a possibility with regards to the bearing capacity of beams and columns. The capacities of the members are sufficient to be used in real projects, especially for the beams, which have an insignificant reduction in carrying capacity though lowering the compression strength of the concrete.
The durability demand of the characteristic compressive strength for concrete in passive exposure classes is only 12MPa [4]. The concrete with 50% cement replaced with SSA also fulfils this demand. About 2/3rds [5] of all concrete in Denmark is used in passive exposure class. This gives a potential saving of CO2 of up to 1/3rd of all cement related CO2 emissions corresponding to a total reduction in CO2 emissions of 1.66 %.
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