Inerting clay minerals and improving the effect of liquefiers in clay-containing mineral binder compositions

摘要

The use of an amine compound and/or of a salt of the amine compound to inert clay minerals with respect to dispersants in a mineral binder composition containing clay minerals and/or to improve or increase the effect of a dispersant in a mineral binder composition containing clay minerals, wherein the amine compound has a structure according to formula I:H₂N—(CHR²¹)_e—[NR²²—(CHR²³)_f]_s—[NR²⁴—(CHR²⁵)_g]_t—NH₂  (I)and wherein: each s and t, independently of each other, has a value of 0-2; each e, f, and g, independently of each other, has a value of 2-10; each R²¹, R²², R²³, R²⁴, and R²⁵, independently of each other, represents hydrogen or —CH₃.