Body assembled with a macroporous hardened cement

Details Body assembled with a macroporous hardened cement Body assembled with a macroporous hardened cement

C - Chemistry, Metallurgy

04

B

C04B 26/10 (2006.01) B01D 46/24 (2006.01) C04B 26/14 (2006.01) C04B 37/00 (2006.01) C04B 38/00 (2006.01)

Patent

CA 2740723

The invention relates to an assembled ceramic body comprising blocks rigidly connected to one another by means of a joint, the side surface of the ceramic body being coverable with a peripheral covering, the joint and/or the peripheral covering comprising a hardened cement, having, on a cutting plane perpendicular to at least one of the surfaces opposite the blocks assembled by said joint, pores having an equivalent diameter of between 200 microns and 40 mm, hereinafter referred to as macropores, in such an amount that, in said cutting plane, the total surface taken up by said macropores is more than 15 % and less than 80 % of the total observed surface. The invention can be used in the filtration of automobile exhaust fumes.

Corps céramique assemblé comportant des blocs solidarisés les uns aux autres au moyen d'un joint, la surface latérale du corps céramique pouvant être revêtue d'un revêtement périphérique, le joint et/ou le revêtement périphérique comportant un ciment durci présentant, dans un plan de coupe perpendiculaire à au moins une des faces en regard des blocs assemblés par ledit joint, des pores présentant un diamètre équivalent compris entre 200 microns et 40 mm, appelés ci-après macropores , en une quantité telle que, dans ledit plan de coupe, la surface totale occupée par lesdits macropores représente plus de 15 % et moins de 80 % de la surface totale observée. Application à la filtration de gaz d'échappement de véhicules automobiles.

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