Hydraulic compositions with low paste surplus

Abstract

The present invention relates to an adjuvanted hydraulic composition comprising: - a hydraulic composition comprising: - a hydraulic binder composition; - water; and - aggregates; - at least one water-reducing or highly water-reducing adjuvant selected from among polyalkoxylated polycarboxylate polymers and polyalkoxylated phosphonate polymers, and any mixtures thereof; and - at least one rheological agent, the hydraulic composition having a water surplus volume (E) less than or equal to 11 litres of water per cubic metre of hydraulic composition, the water surplus volume (E) being able to be expressed by the following relationship: (E) where: Veffective water: the effective water volume of the hydraulic composition, expressed in litres of water per cubic metre of hydraulic composition; D: the water demand of the hydraulic binder composition, expressed in litres of water per kg of hydraulic binder composition; mbinders: the mass of the hydraulic binder composition, expressed in kg of hydraulic binder composition per cubic metre of hydraulic composition; Vº: the initial volume of paste, expressed in litres per cubic metre of hydraulic composition; C: the aggregate compactness, expressed in litres per cubic metre of hydraulic composition; Vaggregates: the volume of aggregates, expressed in litres per cubic metre of hydraulic composition.

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