Abstract: A method includes providing a hydraulic composition, wherein a setting time of the hydraulic composition is greater than or equal to 12 hours without triggering the setting of the hydraulic composition and a variation of the slump of the hydraulic composition measured according to the EN 12350-2 Standard, is less than 50 mm or a variation of the spread of the hydraulic composition measured with a cone according to the EN 12350-2 Standard, is less than 100 mm for at least 12 hours without triggering the setting of the hydraulic composition; and storing the hydraulic composition in a closed container; wherein storing of the hydraulic composition occurs for at least 12 hours without mixing, after which the hydraulic composition is useable without further mixing.

Abstract: A hydraulic composition including from 220 to 500 kg per cubic metre of fresh hydraulic composition, of a hydraulic binder including Portland cement; from 400 to 1200 kg per cubic metre of the fresh hydraulic composition, of a sand having a D10 greater than 0.1 mm and a D90 less than 6 mm; from 0.1 to 5 % by mass of dry extract relative to the mass of the hydraulic binder of a retarding agent; from 0.05 to 5 % by mass of dry extract relative to the mass of the hydraulic binder of a superplasticizer; and from 0.01 to 2% by mass of dry extract relative to the mass of the hydraulic binder of a rheology-modifying agent.