type IV cement

low-heat cement, type IV cement

A cement in which there is only limited generation of heat during setting, achieved by modifying the chemical composition of normal portland cement.
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638, and the cements covered do not include Type IV Cement.
If one wanted to lower the C3S to 34% to avoid the heat of hydration performance test on Type IV cement, what change in f would be required?
Additional changes in the composition likely would need to be made to meet the ASTM Standard Specification for Type IV Cement.