A method of making a composite core includes forming first and second cores of refractory metal and ceramic material. Each of the first and second cores is formed with two layers of a material. The layers are bonded together to form a laminate master pattern, and a flexible mold is formed around the pattern. The pattern is removed from the flexible mold, and slurry material, either pulverulent refractory metal material or ceramic material, is poured into the flexible mold. The slurry material is sintered to form each core. The first core is used as an insert while making the second core to create a final composite core.

An insulated tank for storing flammable and combustible liquid comprises an outer containment tank and an inner storage tank that defines a reservoir for storing flammable and combustible liquid. The inner storage tank is received within the outer containment tank such that a space is defined between the walls of the inner storage tank and the walls of the outer containment tank. The space contains one or more perlite boards to insulate the inner tank.

An insulated tank for storing flammable and combustible liquid comprises an outer containment tank and an inner storage tank that defines a reservoir for storing flammable and combustible liquid. The inner storage tank is received within the outer containment tank such that a space is defined between the walls of the inner storage tank and the walls of the outer containment tank. The space contains one or more perlite boards to insulate the inner tank.

A method of slip forming a concrete structure can include using a first slip form mold that travels along a path to form a portion of a concrete structure by delivering a first flow of concrete into the first mold through a first hopper. The first hopper can be configured to receive the first flow of concrete. The portion of the concrete structure can be modified using a second slip form mold different from the first mold by advancing the second mold along the concrete structure and, while advancing the second mold, delivering a second flow of concrete into the second mold through a second hopper that is configured to receive the second flow of concrete.

The invention relates to a plaster-based composition comprising nanometric boehmite and/or nanometric aluminium trihydroxide, this composition making it possible to obtain products having better dimensional stability at high and in particular at very high temperature. The invention also relates to the method of obtaining the products, and the products produced.

The invention relates to a plaster-based composition comprising nanometric boehmite and/or nanometric aluminium trihydroxide, this composition making it possible to obtain products having better dimensional stability at high and in particular at very high temperature. The invention also relates to the method of obtaining the products, and the products produced.

A composite fireproof board easy for processing, splicing and installation is disclosed. The structure thereof includes, from top to bottom, a bottom layer, a lower reinforcement mesh layer, a middle layer, an upper reinforcement mesh layer, and a surface layer. The middle layer includes an organic frame and an inorganic fireproof material filled within the frame. The frame is provided with fixed grooves on edges adjacent to the fireproof material, and is further provided with through holes. A preparation method of the composite material fireproof board is also disclosed. The present invention adopts the inorganic material as a major material of the board, which has good fireproof performance and waterproof performance, is capable of phase-change energy storage, and achieves high stability and strength. The organic frame disposed on the periphery of the inorganic material enables the board to have good processability. Providing fixed grooves and through holes on the frame can achieve a firmer combination between the fireproof material and the frame, and prevent the frame from stripping off or cracking. Covering a reinforcement mesh layer and a thin-bedded inorganic material above and below the middle layer can increase the tenacity and strength, prevent cracking at the joint, and achieve a fireproof effect.

A composite fireproof board easy for processing, splicing and installation is disclosed. The structure thereof includes, from top to bottom, a bottom layer, a lower reinforcement mesh layer, a middle layer, an upper reinforcement mesh layer, and a surface layer. The middle layer includes an organic frame and an inorganic fireproof material filled within the frame. The frame is provided with fixed grooves on edges adjacent to the fireproof material, and is further provided with through holes. A preparation method of the composite material fireproof board is also disclosed. The present invention adopts the inorganic material as a major material of the board, which has good fireproof performance and waterproof performance, is capable of phase-change energy storage, and achieves high stability and strength. The organic frame disposed on the periphery of the inorganic material enables the board to have good processability. Providing fixed grooves and through holes on the frame can achieve a firmer combination between the fireproof material and the frame, and prevent the frame from stripping off or cracking. Covering a reinforcement mesh layer and a thin-bedded inorganic material above and below the middle layer can increase the tenacity and strength, prevent cracking at the joint, and achieve a fireproof effect.

A composite ultra-high performance porcelain concrete includes cement in an amount between 500 and 680 kg/m.sup.3; and porcelain sand in an amount between 500 and 1200 kg/m.sup.3. The porcelain sand replaces a portion of cement which would normally be needed, thereby reducing environmental impact of the cement, and also creating a beneficial use for waste porcelain source material. The disclosure also relates to a method for producing thin-walled composites CA-UHPPC facade panels and elements for building envelopes.

Disclosed are an organic binder-based coating; a composite gypsum board containing face and back cover sheets, an outside surface of the back cover sheet bearing the coating; and a method of preparing composite board where the back cover sheet contains the coating on its outer surface. The coating is formed from a composition comprising an alkaline silicate, a solid filler, and optionally, a borate. An enhancing layer can also be applied to the back cover sheet.