US 2020/0079694 A1

Composite cement and method of manufacturing composite cement

(22) 04.06.2018

(43) 12.03.2020

(57) The present invention relates to a composite cement obtainable by grinding Portland cement clinker and latent hydraulic material together, preferably in the presence of at least one amine grinding aid, to provide a ground mixture and combining the ground mixture with a mineral filler. It further relates to a method of manufacturing the composite cement comprising the steps of grinding a latent hydraulic material and a Portland cement clinker together, preferably in the presence of at least one amine, to provide a ground mixture and combining the ground mixture with one or more mineral fillers as well as to binders and to using the cement or binders as building material.

(71) HeidelbergCement AG, Heidelberg (DE)

(73) HeidelbergCement AG, Heidelberg (DE)

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