Single component epoxy resin cement mortar

A composition comprising

• at least one cement,
• at least one inorganic filler,
• at least one powder comprising at least one polymer P, the polymer P having covalently bound epoxy groups and having an epoxide value in a range from 0.8 to 3.0 mmol of epoxide groups per g of polymer P,
• at least one compound containing epoxide groups,
• where the at least one compound containing epoxide groups is identical to or different from the polymer P, and
• at least one amine having at least three amine hydrogens which are reactive toward epoxide groups, wherein
• the composition contains more than 10% by weight of cement and at room temperature is present as storage-stable free-flowing powder and/or granular material, and
• the compound containing epoxide groups is identical to the polymer P and is a copolymer having covalently bound epoxide groups.