Composite binder comprising calcium sulfoaluminate cement and calcium nitrate or calcium nitrite

摘要

The present invention relates to composite binders comprising calcium sulfoaluminate cement and supplementary cementitious materials with a weight ratio of calcium sulfate to the sum of ye'elimite, aluminates and ferrites in the range from 0.1 to 0.9, that further comprise calcium nitrate and/or calcium nitrite, a method of enhancing the strength development of composite binders comprising calcium sulfoaluminate cement and supplementary cementitious materials by adding calcium nitrate and/or calcium nitrite and to the use of calcium nitrate and/or calcium nitrite as strength enhancing additive for composite binder comprising calcium sulfoaluminate cement and supplementary cementitious materials.