Fecha de publicación: 21/12/2022 Fuente: WIPO (eseential oils OR extracts) Use of a CO2-containing gaseous effluent (10), whereby at least part of the CO2 present in the effluent is captured as a mixture (25, 35) of CO2 particles and liquid nitrogen (20) which is brought into contact with one or more ingredients (100, 101, 102, 121) of a wet concrete (125) before and/or during and/or after the preparation of the wet concrete (125), so that the mixture (25, 35) extracts heat from said one or more ingredients (100, 101, 102, 121) and CO2 from the mixture (25, 35) partially carbonates Ca-compounds present in the wet concrete (125).