Patent ID: 8246739
Filing Date: 2012-08-21
Classification: C04B,Y02P,Y02W

Abstract:
1. A process for the preparation of a wet concrete composition, comprising a stage of mixing of: Portland clinker in the form of grains having a Dv97 from 10 to 30 μm or having a Blaine specific surface greater than or equal to 5300 cm slag, of which the minimum quantity in kg/m calcium sulphate; complementary materials, having a Dv90 less than or equal to 200 μm, of which the minimum quantity in kg/m from 1500 to 2200 kg/m a plasticizer; optionally an accelerator and/or an air-entraining agent and/or a thickening agent and/or a retarder and/or a clay-inerting agent; with 140 to 220 l/m the total quantity of clinker in the wet concrete being less than or equal to 200 kg/m