BOPI 05 BR / 2025 REPERTOIRE NUMERIQUE 19 Fig. 1 ________________________________________ (11) 21897 Consulter le mémoire (51) C04B 28/00 (2023.01); C04B 28/02 (2023.01); C04B 28/08 (2023.01); C04B 28/26 (2023.01); C04B 33/04 (2023.01); C04B 38/00 (2023.01) (21) 1202400018 - PCT/EP2022/070571 (22) 21/07/2022 (30) FR n° FR2107891 du 21/07/2021 (54) Compressed concrete block with low mass per unit area comprising a raw clay matrix and associated methods. (72) Neuville MATHIEU (FR) et Mercé MANUEL (FR) (73) MATERRUP, 440 rue des Estagnots, 40230 SAINT-GEOURS-DE-MAREMNE (FR) (74) Cabinet ISIS CONSEILS (SCP), Bastos, Rue 1.862, face de l'Agence Turque de Coopération et de Coordination, B.P. 15067, YAOUNDE (CM). (57) The invention relates to a compressed concrete block comprising a raw clay matrix, a calcined metal oxide composition and aggregates, said compressed concrete block having a mass per unit area of less than or equal to 600 kg/m2. The invention also relates to a method for preparing (100) a compressed concrete block having a mass per unit area of less than or equal to 600 kg/m2, said method comprising the following steps: - mixing (110) a raw clay matrix, a calcined metal oxide composition, aggregates and water; - placing (120) the resulting mixture in moulds; - applying (140) pressure to one surface of the moulded mixture, preferably the top surface; and - removing (160) the compressed concrete blocks from the moulds to obtain a compressed concrete block having a mass per unit area of less than or equal to 600 kg/m2.
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