Patent attributes
An accelerator composition for use with sprayed cementitious compositions, which is an aqueous solution or dispersion of a blend of the essential Components 1–3Component 1—aluminium sulphateComponent 2—at least one of an alkanolamine and an alkylene diamine or triamineComponent 3—hydrofluoric acidoptionally with at least one of Components 4–7, with the proviso that at least one of Component 4 or Component 5 be present:Component 4—at least one of sodium hydroxide, potassium hydroxide, lithium hydroxide, magnesium hydroxide, lithium carbonate, sodium carbonate, potassium carbonate, magnesium carbonate, sodium sulphate, potassium sulphate, magnesium sulphate and lithium sulphate;Component 5—C1–C10 aliphatic mono- and dicarboxylic acids and their metal salts;Component 6—aluminium hydroxide;Component 7—at least one of phosphoric acid and phosphorous acid.
