FIELD: chemistry.
SUBSTANCE: present invention relates to use, when preparing an aqueous composition based on hydraulic binder combinations, of at least one comb-like copolymer containing a (meth)acrylic backbone on which are grafted side chains containing a hydrophilic group and at least one comb-like copolymer containing a (meth)acrylic backbone on which side chains ending with a hydrophobic group are grafted. The invention also relates to a hydraulic binder-based aqueous composition containing: a) at least one comb-like (meth)acrylic copolymer containing at least one side chain bearing at least one hydrophilic alkoxy group or a hydroxyl group of polyalkylene glycol, b) at least one comb-like (meth)acrylic copolymer containing at least one side chain bearing at least one hydrophobic group. The invention is developed in subclaims.
EFFECT: ensuring processability of said composition without triggering off segregation.
14 cl, 10 ex, 1 tbl, 2 dwg
