Calcium sulfoaluminate composite
binders

(22) 02.09.2014

(43) 25.10.2017

(57) The present invention relates to composite binders containing calcium sulfoaluminate cement and supplementary cementitious material, wherein a weight ratio of calcium sulfate to the sum of ye‘elimite, aluminates and ferrites (R$(Y+A+F)) ranges from 0.5 to 0.85, to a method of manufacturing them comprising the steps: a) providing at least one calcium sulfoaluminate cement h) providing at least one supplementary cementitious material c) mixing 10 to 90 % by weight calcium sulfoaluminate cement(s) with 10 to 90 % by weight supplementary cementitious material(s), and to their use for making hydraulically setting building materials and special construction chemical compositions.

(71) HeidelbergCement AG (DE)