Two-component water-based cementitious adhesive with reduced viscosity

A two-component composition comprising:

• A) a first component A, comprising, based on the total weight of component A:
• a1) between 68 and 99.9 wt.-% of an aqueous dispersion of at least one polymer P, the aqueous dispersion of at least one polymer P comprising the polymer P with an amount of between 20 and 90 wt.-%, based on the weight of the dispersion;
• a2) between 0 and 2 wt.-% of a nonionic or ionic dispersing agent D;
• B) a second component B, comprising, based on the total weight of component B:
• b1) between 10 and 30 wt.-% of a nonionic, non-aqueous liquid carrier LC,
• b2) between 0 and 20 wt.-% of calcium sulfate,
• b3) between 10 and 89.9 wt.-% of at least one hydraulic binder H,
• b4) between 0 and 10 wt.-% of a thixotropy agent T;
• wherein both components A and B are prepared and stored separately and mixed directly before application;
• and
• with the proviso that the first component A furthermore comprises:
• a3) between 0.1 and 15 wt.-% of a monovalent metal salt M,
• and the second component B furthermore comprises:
• b5) between 0.1 and 25 wt.-% of a polyamine PA.