PROCESS FOR MANUFACTURING A HYDRAULIC BONDING AGENT, CORRESPONDING ADDITIVE AND ITS USE

摘要

The invention relates to a method for producing a hydraulic binder, comprising contacting a composition comprising cement clinker, before, during or after the grinding procedure, with (a) a defoaming agent and (b) 0.0005% to 2% by weight, based on the total composition, of at least one air-introducing compound, the defoaming agent (a) comprising 0.0001 % to 0.5% by weight, based on the total composition, of at least one defoaming agent of the formula R10 - (CmH2m-O-)x -(CdH2d-O-)c -H and the ratio of (a) to (b) being between 1:1 to 1:200.