B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
B29C73/00—Repairing of articles made from plastics or substances in a plastic state, e.g. of articles shaped or produced by using techniques covered by this subclass or subclass B29D
B29C73/16—Auto-repairing or self-sealing arrangements or agents
B29C73/163—Sealing compositions or agents, e.g. combined with propellant agents
Mélanges cimentaires à base de clinkers sulfoalumineux et ferroalumineux et leur utilisation dans la construction d'ouvrages cimentaires au contact de solutions agressives
Béton de sable de haute résistance en traction ainsi que pièces, notamment plaques minces destinées à l'industrie du bâtiment réalisées en un tel béton de sable et procédé de fabrication de ces pièces.