Setting and hardening accelerator for hydraulic binders in the solid state

摘要

Disclosed is a setting and hardening accelerator in the solid state which is obtainable by a process characterized in that the process comprises at least step (a) wherein at least one liquid component A comprising at least the reaction product of acid and aluminum hydroxide is brought into the solid state to receive a solid component A; and at least step (b) wherein the solid component A obtained in step (a) is mixed with at least one solid component B, wherein the solid component B comprises or consists of aluminum sulfate.