If blended cement is used, the temperature rise will be proportionately lower.
As the specification always allows the use of OPC, it appeared that the use of OPC will be most flexible.
However, when necessary, different percentage of ggbs or fly ash can be added to lower the temperature rise and enhance the durability.
The early strength will be reduced when higher percentage of ggbs or fly ash is used.
Related Topic: What is low heat cement?