摘要:
The present invention describes a fire resistant building material composition, useful for example as a fire door core and to a method of making this composition. The building material of the present invention is prepared from an aqueous mixture of predominately expanded perlite, a small amount of a binder component consisting essentially of calcined gypsum and an organic binder, and optionally a fibrous reinforcement.
摘要:
A lightweight structural concrete with screw-ability and nail-ability similar to wood is composed of a non-structural and ultra lightweight aggregate such as expanded perlite or a combination of expanded perlite and polystyrene beads of a particular size distribution and volume amount, entrained air cells of another specific size distribution and volume amount, and dense cementitious composition of a cement binder, a fine grade structural filler no larger than concrete sand grade, a pozzolan, and optional micro-fibers for reinforcement. This structural concrete matrix is optimized to hold 13 gauge T-nails and bugle head wood screws with thread ranging from 8 to 11 threads per inch and diameter of 0.10″ to 0.137″. The resulting concrete will have consistent screw-ability and nail-ability similar to that of wood.
摘要:
A lightweight structural concrete with screw-ability and nail-ability similar to wood is composed of non-structural and ultra lightweight aggregate such as expanded perlite of a particular size distribution and amount, entrained air cells of another specific size distribution and amount, and dense cementitious composition of a cement binder, a fine grade structural filler no larger than masonry sand grade, a pozzolan, and optional micro-fibers for reinforcement. This structural concrete matrix is optimized to hold 13 gauge T-nails and bugle head wood screws with thread ranging from 8 to 11 threads per inch and diameter of 0.10″ to 0.137″. The resulting concrete will have consistent screw-ability and nail-ability similar that of wood.
摘要:
The present invention describes an improved building material composition, useful for example as a fire door core. The building material of the present invention is prepared by compressing an aqueous mixture of expanded perlite and a fast setting, cementitious composition consisting essentially of a hydraulic cement, preferably Portland cement, and a pozzolan additive selected from the group consisting of metakaolin, VCAS and mixtures thereof, and preferably also includes an organic binder and a fibrous reinforcement.
摘要:
The present invention describes a fire resistant building material composition, useful for example as a fire door core and to a method of making this composition. The building material of the present invention is prepared from an aqueous mixture of predominately expanded perlite, a small amount of a binder component consisting essentially of calcined gypsum and an organic binder, and optionally a fibrous reinforcement.
摘要:
The invention provides a poultice or sacrificial render comprising fibrous material and diatomaceous earth. Preferably, the ratio of fiber to diatomaceous earth is in the range 1:6 to 6:1 and the fibrous material contains relatively long fibers, such as would be obtained from the manufacturing or pulping of quality paper, for example fibers in the range 1 mm to 4 mm. The invention also provides a poultice mixture comprising fiber, diatomaceous earth and water and optional additives such as a binder or thickening agent and a biocide. The invention also provides a method of removing salt from a salt permeable object comprising the step of applying the poultice mixture to the salt permeable object.
摘要:
A sandstone refurbishing compound is shown comprising a mixture of ordinary ingredients, namely a plaster/perlite mixture, portland cement, water, an acrylic resin, wood filling means, and silica sand. It can be used on existing sculptures, walls, or similar objects made of sandstone or similar materials.
摘要:
The invention provides a poultice or sacrificial render comprising fibrous material and diatomaceous earth. Preferably, the ratio of fiber to diatomaceous earth is in the range of 1:6 to 6:1 and the fibrous material contains relatively long fibers, such as would be obtained from the manufacturing or pulping of quality paper, for example, fibers in the range of 1mm to 4mm. The invention also provides a poultice mixture comprising fiber, diatomaceous earth and water and optional additives such as a binder or thickening agent and a biocide. The invention also provides a method of removing salt from a salt permeable object comprising the step of applying the poultice mixture to the salt permeable object.
摘要:
A method and a mixture for preparing an ablative material for fire and heat protection is provided. The mixture includes calcium sulfate hemihydrate and a hydrated salt and the ablative material is prepared by adding water to the mixture.
摘要:
The invention relates to an improved sound absorbing cementitious composition and method of making involving a preformed foam solution made from a surfactant, such as an ammonium salt of a sulfated linear alcohol ethoxylate surfactant, preblended with water at a dilution ratio in a range of water to surfactant of from about 40:1 to 10:1. Thereafter, the preformed foam solution is combined with components including cement(s), aggregate(s), water and optional additives. The composition provides for an open cellular surface capable of absorbing sound.