| abstract |
The present invention relates to a slag-based binder or a mortar or concrete composition comprising said slag-based binder. The object of the present invention is to propose a binder which is an attractive alternative to OPC-based compositions, which is environmentally friendly, inexpensive and competitive, and which is more desirable than OPC-based compositions in terms of hygiene and safety Satisfactory, it produces wet formulations with suitable rheological properties, i.e. stable rheological properties over the setting times typically required by users of said wet formulations (eg one hour to several hours - 3 hours), without Increasing the W/B ratio of the hardened material obtained from the wet formulation also does not impair its mechanical properties. To achieve this object, the present invention is a slag-based binder comprising: A. at least one slag; A', optionally, at least one CO3 -containing mineral powder; B. optionally, at least one Co-binder other than binder A and different from CO powder A ';C'. Optionally, at least one co-activator C' other than C; C. At least one activator for water/slag reaction D. at least one chelating agent and/or at least one source of chelating agent, the chelating agent is preferably a scale inhibitor; E. and at least one superplasticizer different from the chelating agent D. The invention also relates to a kit for producing a binder, a dry concrete or mortar comprising a binder and aggregates, a method for preparing a wet formulation (binder/water or cement mortar/water) and the manufacture of a building from a wet formulation or methods of civil engineering or its elements, coatings, fillers, screeds, tile adhesives and/or interior or exterior insulation systems. |