ground granular blast furnace slag-based hydraulic binder having improved hardening and improved cure

摘要

ground granular blast furnace slag-based hydraulic binder having improved hardening and improved cure. The present invention relates to a hydraulic binder composition comprising at least 50% by weight of ground granulated blast furnace slag and a system for activating said slag, said system comprising at least one calcium sulfate, at least one product chosen from a portland clinker source and lime, at least one aluminum derivative and at least one alkali metal or alkaline earth metal salt. The present invention also relates to a ready-to-mix building material composition comprising such a hydraulic binder and aggregates of inert material capable of being agglomerated in the presence of an aqueous phase. The present invention also relates to a process for employing the ready-mix composition according to the invention, comprising a stage of mixing said composition with water for the purpose of preparing a building material such as a concrete or mortar, and in particular a sticking mortar, jointing mortar or leveling or coating mortar.