Mineral Fibers Or Glass Fibers Containing (e.g., Slag Wool, Cotton Wool, Mineral Wool, Rock Wool, Etc.) Patents (Class 106/711)
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Patent number: 5749961Abstract: Reinforced concrete members consisting of a high-strength concrete are subject to explosive spalling. Such spalling can be prevented by the introduction of a capillary system into the concrete of such members, containing substantially linear capillaries having a diameter of at least 3 .mu.m and a length of at least 5 mm. This capillary system can be built during or after the hardening of the concrete without impairing the other desired properties of the concrete or mortar, or it can first be produced under the fire attack. This can be effected with fibers which form the capillaries by dissolution, softening, decomposition, shrinkage or melting and which, due to their shape, i.e. diameter and length, and the incorporated amount, correspond to the desired capillaries.Type: GrantFiled: April 10, 1997Date of Patent: May 12, 1998Inventor: Hans Jaklin
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Patent number: 5732363Abstract: There are provided a solidifying material used for radioactive waste which comprises a latent hydraulic material, an ultra-fine powder substance and a dispersing agent, and a process for the solidification of radioactive wastes which comprises kneading the above solidifying material with a cure stimulating agent, radioactive waste and, as occasion demands, water, and then curing the mixture by aging. Since the solidifying material of the present invention has excellent properties such as large treating capacity, excellent water resistance and large compressive strength, not only temporary storage but also permanent storage of radioactive wastes can be made.Type: GrantFiled: October 24, 1995Date of Patent: March 24, 1998Assignees: JGC Corporation, Nippon Kayaku Kabushiki KaishaInventors: Kazunori Suzuki, Shigeru Mihara, Takuro Yagi, Yoshimitsu Karasawa, Koichi Ikeda, Yasuo Kuroda
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Patent number: 5728209Abstract: An additive for concrete, mortar or grout comprises at least one admixture material in a compacted unit of selected amount, the unit having strength sufficient to maintain structural integrity during handling and storage, but having sufficient solubility or friability upon mechanical agitation within a wet mixing environment of a cementitious composition mixture to dissolve or fragment for uniform dispersal throughout the cementitious composition mixture.Type: GrantFiled: August 15, 1997Date of Patent: March 17, 1998Assignee: MBT Holding AGInventors: Jeffrey Bury, David F. Factor, Zvi Grauer
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Patent number: 5725652Abstract: An improved lightweight cementitious product made up of an aqueous cementious mixture using cement and expanded shale, clay and slate mix, that can incorporate fly ash, lime, and the weight saving component, which is micronized polystyrene particles having particle sizes in the range of 50 to 2000 microns, and characterized by having water contents in the range of from about 0.5% to 50% v/v. The ultra low water compositions can be extruded and can be molded under high pressure.Type: GrantFiled: August 21, 1996Date of Patent: March 10, 1998Inventor: David M. Shulman
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Patent number: 5718759Abstract: A cementitious composition useful for water-resistant construction materials, including floor underlayments, backing boards, self-leveling floor materials, road patching materials, fiberboard, fire-proofing sprays, and fire-stopping materials includes about 20 wt. % to about 75 wt. % calcium sulfate beta-hemihydrate, about 10 wt. % to about 50 wt. % Portland cement, about 4 wt. % to about 20 wt. % silica fume and about 1 wt. % to about 50 wt. % pozzolanic aggregate. The Portland cement component may also be a blend of Portland cement with fly ash and/or ground blast slag.Type: GrantFiled: October 18, 1996Date of Patent: February 17, 1998Assignee: National Gypsum CompanyInventors: Elisha Stav, Edward A. Burkard, Ronald S. Finkelstein
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Patent number: 5718757Abstract: The invention relates to a phosphomagnesium cement obtained by mixing water and a binding phase based on at least one phosphorus compound, at least one magnesium compound and at least one inorganic compound, characterized in that the inorganic compound is introduced in the form:- either of particles (1) of size smaller than 0.1 .mu.m,- or of aggregates (2) of size smaller than 0.1 .mu.m,- or of agglomerates (3) capable of deagglomerating at least partially during the mixing of the said binding phase and of water, into particles of size smaller than 0.1 .mu.m or into aggregates of size smaller than 0.1 .mu.m.Type: GrantFiled: December 3, 1996Date of Patent: February 17, 1998Assignee: Rhone-Poulenc ChimieInventors: Bruno Le Guillou, Giiies Orange
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Patent number: 5700557Abstract: A composition for producing an unsaturated polyester is provided. The composition comprises an unsaturated polyester resin; cement; sand; bleaching agent; and curing agent.Type: GrantFiled: December 5, 1996Date of Patent: December 23, 1997Inventor: Li-Ching Lin
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Patent number: 5685902Abstract: A carbon fiber-reinforced concrete containing a cement, a coarse aggregate, a fine aggregate, a carbon fiber and water, the carbon fiber having an average length not less than the maximum size of the coarse aggregate and also a tensile strength of at least 300 kgf/mm.sup.2.Type: GrantFiled: December 15, 1995Date of Patent: November 11, 1997Assignee: Mitsubishi Chemical CorporationInventors: Mitsuharu Tezuka, Mitsuru Awata, Akira Shiraki
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Patent number: 5663218Abstract: Process for protecting articles from shock comprising encasing such articles in a plurality of molded blocks of a composition capable of progressively and irreversibly deforming in response to such shocks, said composition comprising cellulosic fibers dispersed in a matrix of at least one non-hydrated hydraulic binder, wherein from 2.5 to 75 parts by weight of the cellulosic fibers are dispersed per 100 parts by weight of said binder, said composition, upon curing and drying, exhibiting a density between 0.15 and 0.60.Type: GrantFiled: July 24, 1996Date of Patent: September 2, 1997Assignee: Lafarge Materiaux de SpecialitesInventor: Jacques Chappuis
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Patent number: 5660624Abstract: Self-repairing, fiber reinforced matrix materials include a matrix material including inorganic as well as organic matrices. Disposed within the matrix are hollow fibers having a selectively releasable modifying agent contained therein. The hollow fibers may be inorganic or organic and of any desired length, wall thickness or cross-sectional configuration. The modifying agent is selected from materials capable of beneficially modifying the matrix fiber composite after curing. The modifying agents are selectively released into the surrounding matrix in use in response to a predetermined stimulus be it internal or externally applied. The hollow fibers may be closed off or even coated to provide a way to keep the modifying agent in the fibers until the appropriate time for selective release occurs.Type: GrantFiled: September 29, 1995Date of Patent: August 26, 1997Inventor: Carolyn M. Dry
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Patent number: 5641815Abstract: In order to be able to produce formed elements or building elements with a significantly increased strength with a building material or structural material, it is suggested to provide the material with a largely uniform fine pore structure or a microcellular structure. These fine pores preferably have a diameter in the range of approx. 0.01.mu. to approx. 5.mu. and are self-contained. The material contains a reactive binding agent or a reactive matrix material, which can be a cement/water mixture or also a synthetic resin, for example polyurethane, epoxy resin, etc.Type: GrantFiled: October 11, 1994Date of Patent: June 24, 1997Inventor: Hans Beat Fehlmann
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Patent number: 5637412Abstract: The present invention relates to hydraulically bonded cement compositions and methods. More particularly, the present invention is directed to novel compositions and methods of hydrating hydraulic cement without mechanical mixing of the cement and water. The present invention includes materials prepared by manipulating under pressure powdered hydraulic cement compositions using known or novel powder packing, casting, or expanding techniques, such that air within the powdered hydraulic cement is substantially removed while the cement is formed into a self-supporting near net final position. Thereafter, the formed hydraulic cement is hydrated without mechanical mixing of the cement and water.Type: GrantFiled: September 26, 1994Date of Patent: June 10, 1997Assignee: E. Khashoggi IndustriesInventors: Hamlin M. Jennings, Per J. Andersen, Simon K. Hodson
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Patent number: 5624491Abstract: The present invention relates to concrete, mortar and other hardenable mixtures comprising cement and fly ash for use in construction. The invention includes a method for predicting the compressive strength of such a hardenable mixture, which is very important for planning a project. The invention also relates to hardenable mixtures comprising cement and fly ash which can achieve greater compressive strength than hardenable mixtures containing only concrete over the time period relevant for construction. In a specific embodiment, a formula is provided that accurately predicts compressive strength of concrete containing fly ash out to 180 days. In other specific examples, concrete and mortar containing about 15% to 25% fly ash as a replacement for cement, which are capable of meeting design specifications required for building and highway construction, are provided. Such materials can thus significantly reduce construction costs.Type: GrantFiled: May 20, 1994Date of Patent: April 29, 1997Assignee: New Jersey Institute of TechnologyInventors: John W. Liskowitz, Methi Wecharatana, Chai Jaturapitakkul, Anthony E. Cerkanowicz, deceased
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Patent number: 5622556Abstract: An improved lightweight cementitious product made up of an aqueous cementious mixture that can incorporate fly ash, portland cement, sand, lime, and the weight saving component, which is micronized polystyrene particles having particle sizes in the range of 50 to 2000 microns, and characterized by having very low water contents, in the range of from about 0.5% to 5% v/v. The ultra low water compositions can be extruded and can be molded under high pressure.Type: GrantFiled: October 2, 1995Date of Patent: April 22, 1997Inventor: David M. Shulman
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Patent number: 5580378Abstract: An improved lightweight cementitious product made up of an aqueous cementitious mixture that can incorporate fly ash, portland cement, sand, lime, and the weight saving component, which is micronized polystyrene particles having particle sizes in the range of 50 to 2000 microns. The final mix can be poured into molded products such as foundation walls, roof tiles, bricks and the like. The product can also be used as a mason's mortar, a plaster, a stucco or a texture.Type: GrantFiled: December 19, 1994Date of Patent: December 3, 1996Inventor: David M. Shulman
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Patent number: 5575841Abstract: A cementitious material, such as concrete, contains carriers having within them an agent for improving the physical properties of the cementitious material. The agent is released from the carriers into the cementitious material at a desired time after setting by the action of an external stimulus.Type: GrantFiled: December 29, 1993Date of Patent: November 19, 1996Assignee: Carolyn M. DryInventor: Carolyn M. Dry
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Patent number: 5558708Abstract: A system and method for dispersing pigment in cement based compositions comprising a predetermined and prepackaged amount of a cement based component and a predetermined and prepackaged amount of an aqueous dispersion of a pigment containing component.Type: GrantFiled: May 11, 1995Date of Patent: September 24, 1996Assignee: C-Cure CorporationInventors: Charles J. Johansen, Jr., Ernest D. Hollas, Robert L. Vecchio, Hani Zoumut
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Patent number: 5542976Abstract: A blend for producing refractory imitation fireplace objects comprises between 30% and 50% amorphous aluminum siliceous mineral silicate, between 1% and 5% fibre and between 40% and 60% high temperature cement. A method of producing a slurry for casting the refractory objects consists of blending the amorphous aluminum siliceous mineral silicate, the fibre, an aggregate and colorant, adding and blending a high temperature cement and a dispersant and adding between 35% and 45% by weight of water.Type: GrantFiled: May 24, 1995Date of Patent: August 6, 1996Assignees: Ed Martin, Claude SimardInventors: Ed Martin, Claude Simard, Brad Thompson
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Patent number: 5529624Abstract: An improved fire retardant insulation material for buildings is disclosed. The insulation material comprises a mixture of perlite and natural or synthetic zeolite bound together by a lime-cement mixture. The insulation is reinforced by a three dimensional inorganic fiber network which bonds with the other materials to form exceptionally stable insulation materials. Natural volcanic rock may also be added to the lime cement binder as a replacement for a part of the perlite/zeolite mixture.Type: GrantFiled: April 12, 1994Date of Patent: June 25, 1996Inventor: Norbert Riegler
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Patent number: 5525153Abstract: The present invention relates to a ready mixed cement product for home or commercial use which is premixed and prepackaged incorporating recycled construction and demolition debris in place of virgin stone. The present invention also relates to methods for making and using this ready mixed cement product.Type: GrantFiled: April 4, 1995Date of Patent: June 11, 1996Inventor: Michael Cosola
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Patent number: 5482550Abstract: The present application is directed to a structural building unit formed from a set solid mixture consisting essentially of about 30% to about 75% by weight portland cement, about 1% to about 25% by weight percent ground expanded cellular polystyrene, about 1% to about 35% by weight ground cellulosic fiber, about 2% to about 15% by weight fly ash, about 1% to about 10% by weight silica fume, about 1% to about 15% by weight bentonite, about 25% to about 50% by weight water, about 0% to about 3% by weight air entrainer, about 0% to about 10% by weight paraffin wax emulsion and about 0% to about 15% by weight rubber emulsion.Type: GrantFiled: November 28, 1994Date of Patent: January 9, 1996Inventor: Mark C. Strait
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Patent number: 5472497Abstract: Reinforced concrete members consisting of a high-strength concrete are subject to explosive spalling. Such spalling can be prevented by the introduction of a capillary system into the concrete of such members, containing substantially linear capillaries having a diameter of at least 3 .mu.m and a length of at least 5 mm.Type: GrantFiled: June 21, 1993Date of Patent: December 5, 1995Inventor: Hans Jaklin
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Patent number: 5447564Abstract: Conductive cement-based compositions exhibiting both good electrical conductivity and mechanical strength have been obtained by ensuring proper dispersion of conductive phase within the composition. The content of the ingredients depends on the preparation method, for instance conventional mixing or slurry infiltration, and on the type of the composition, i.e. conductive paste, mortar or concrete. The broad content ranges of the conductive composition are:a cement binder,a conductive phase consisting of one or more of the following:conductive fibers in the amount from 0 to 15% by volume of the composition;conductive particles in the amount from 0 to 80% by volume of the composition;water, at the weight ratio relative to cement binder from 0.2 to 0.75,fine agregates at the weight ratio relative to cement binder from 0.0 to 2.0, andcoarse aggregates at the weight ratio relative to cement binder from 0.0 to 2.0,conventional additives or admixtures, and optionally a dispersant.Type: GrantFiled: February 16, 1994Date of Patent: September 5, 1995Assignee: National Research Council of CanadaInventors: Ping Xie, Ping Gu, Yan Fu, James J. Beaudoin
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Patent number: 5435842Abstract: Vibration damping thick-film coating composition comprising a coating composition comprising 100 parts by weight of a binder, from 20 to 200 parts by weight of a hydraulic inorganic filler, from 10 to 150 parts by weight of a filler other than the hydraulic inorganic filler, and from 10 to 7 parts by weight of (a) a cored filler or (b) a cored filler and a synthetic resin powder, and a method of forming the same.Type: GrantFiled: August 11, 1992Date of Patent: July 25, 1995Assignees: Cosmo Research Institute, Cosmo Oil Co., Ltd.Inventors: Heihachiro Mukaida, Takashi Hemmi, Seiichi Takano, Yoshiyuki Hattori
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Patent number: 5431730Abstract: A mortar composition based on aluminous cement which provides an attractive ceramic tile-like surface gloss and other desirable properties including superb hardness, reduced water absorption, high strength, high acid resistance, and good heat and weather resistance, is disclosed. Also disclosed is a molded article of manufacture which comprises the mortar composition, as well as fiber-reinforced mortar compositions and molded articles of manufacture made therefrom.Type: GrantFiled: November 19, 1993Date of Patent: July 11, 1995Inventor: Jiro Fujimasu
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Patent number: 5399195Abstract: A method for producing a cement material with reduced development of self-induced cracking, the method comprising:adding to a concrete, mortar or cement mix to which water has been added, an amount of 0.Type: GrantFiled: June 28, 1994Date of Patent: March 21, 1995Assignee: Danaklon A/SInventors: Anders S. Hansen, Derek Davies
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Patent number: 5397516Abstract: A process of molding a building panel which includes the steps of combining about 25 pounds of Portland Cement Type I, about 15 pounds of water at around 21.degree. Centigrade, added about 1 ounce of aluminum, calcium, magnesium, and silica, respectively, and about 12 ounces of synthetic fibers with about 0.1 ounce of ferro chloride in 40% solution by volume, and pouring the mixture into the lower portion of a mold to about 1/2 its depth and waiting for approximately 4 hours for the mixture to increase by about 100% of its original volume to fill the mold and thereafter stripping the mold from the form and placing it in a heated environment for curing for a period of approximately 24 hours and thereafter removing the panel from the heated environment.Type: GrantFiled: March 25, 1993Date of Patent: March 14, 1995Assignee: Thermo Cement Engineering Corp.Inventor: Faiz Sikaffy
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Patent number: 5366549Abstract: A method is provided for making a fiber-reinforced slag gypsum cement lightweight hardened product. The method consists essentially of mixing (1) from 5 to 140 parts by weight of aggregates having a maximum size of not larger than 2000 .mu.m to (2) 100 parts by weight of a mixture which comprises 100 parts by weight of Portland cement, (3) from 20 to 350 parts by weight of slag fine powder which has a fineness ranging from 6,000 to 12,000 cm.sup.2 /g as Blaine's specific surface area, (4) from 0 to 20 parts by weight of lime, (5) from 20 to 100 parts by weight of calcium aluminate and gypsum fine powder, (6) 0.01 to 1.5 parts of a setting retardant; mixing water, prefoamed foams and reinforcing fibers with the mixture to obtain a slurry; subjecting the slurry to molding to obtain a molded product; removing the molded product to obtain a hardened product; and curing the hardened product with steam.Type: GrantFiled: March 24, 1994Date of Patent: November 22, 1994Assignees: Kyowa Giken Co., Ltd., Takeda Chemical Industries, Ltd., Dai-Ichi Cement Co., Ltd., Naigai Technos Corporation, Obayashi CorporationInventors: Shokichi Imaizumi, Tsuyoshi Aoyama, Nagao Hori, Katsumi Takenami, Kiyoshi Koibuchi, Youich Ishikawa, Seiji Kazama, Koji Nasu
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Patent number: 5360476Abstract: A thin protective coating for foam surfaced objects achieving high compression and impact strengths without the need of water curing.Type: GrantFiled: August 2, 1993Date of Patent: November 1, 1994Inventor: Burton K. Whatcott
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Patent number: 5346868Abstract: The invention relates to inorganic fibers, and a process for their production. The inorganic fibers lose their fiber form factor after a short contact period with water or a physiological body fluid, so that danger to health is not expected from such fibers remaining for a prolonged period of time in or on human tissue. The fiber of the invention is characterized by the fact that at least 90% of it comprises 20-50% by weight of CaO and 50-80% by weight of Al.sub.2 O.sub.3. The rest comprises a maximum of 10% by weight of typical impurity oxides.Type: GrantFiled: June 8, 1993Date of Patent: September 13, 1994Assignee: Didier-Werke AGInventor: Axel Eschner
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Patent number: 5342566Abstract: A method and apparatus for producing gypsum board. The method includes the steps of mixing a predetermined amount of fibers, absorbent, and water to form a mixture of wetted, loose fibers, mixing the wetted fibers with predetermined amount of dry calcined gypsum, forming the mixture into a matt having a substantially uniform consistency and compressing the matt to form a board composed of bonded fibers and gypsum. The resulting board has a smooth exterior and can be a homogeneous or a multilayer board.Type: GrantFiled: August 23, 1990Date of Patent: August 30, 1994Assignees: Carl Schenck AG, Lousiana Pacific CorporationInventors: Karl K. Schafer, Gerhard M. Melzer, Jorg Scriba, Suda G. Bhagwat, James Eisses
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Patent number: 5338349Abstract: A fire resistant and high temperature insulating composition is provided. The composition generally comprises a carbonate material in an amount from about 20% to about 80% by weight, an aluminosilicate in amount from about 0.5% to about 15% by weight, talc in amount from about 0.5% to about 10% by weight, cellulose in amount from about 1% to about 30% by weight, a binder in an amount from about 1% to about 45% by weight, and a gelling agent in an amount from about 1% to about 45% by weight. The binder is preferably a mixture of an organic adhesive such as a polymeric resin, and a non-organic adhesive such as cement, but other adhesives can be used alone or in combination therewith. The gelling agent is preferably a polymeric substance that swells in the presence of a liquid such as superabsorbent polymers. The components are combined and water may be added in an amount from about 1 to about 50% by weight to obtain a composition of the desired consistency.Type: GrantFiled: May 24, 1993Date of Patent: August 16, 1994Assignee: FireComp, Inc.Inventor: Randolph C. Farrar
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Patent number: 5334242Abstract: An improved composition for baking stones for use in commercial ovens and a method of manufacture of the improved baking stones are disclosed. The baking stone composition is asbestos-free, non-hazardous and is ideal for commercial ovens designed for baking pizza and bread. The improved composition includes portland cement, mortar or mason sand, glass fiber strands, water and a plasticizer. A novel method of manufacture is also disclosed which includes the preferred mixing speeds, mixing times, vibrating speeds, vibrating times and cure times.Type: GrantFiled: May 4, 1992Date of Patent: August 2, 1994Inventor: Mark J. O'Toole
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Patent number: 5324356Abstract: A tracer material having an identifiable property associated with a particular type product and/or a particular manufacturer is blended with dry, powder hydraulic cement-based building materials, which set to a hardened product after admixing with water or another hardening agent, to provide the capability of making a simple analysis of the hardened product to determine the presence or absence of the tracer material and thereby positively identify whether the building material used to produce the hardened product was a particular type and/or supplied by a particular manufacturer. The building material can be analyzed in the dry powder form prior to use to make the same type determination.Type: GrantFiled: June 24, 1992Date of Patent: June 28, 1994Assignee: ChemRex Inc.Inventor: Frederick R. Goodwin
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Patent number: 5308397Abstract: A stucco coating for interior and exterior walls of buildings that provides increased bonding strength over the prior art.Type: GrantFiled: February 16, 1993Date of Patent: May 3, 1994Inventor: Burton K. Whatcott
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Patent number: 5298071Abstract: A fiber-hydratable cement composition comprising a uniform dispersion of from 0.0001 to 10 volume percent interground fiber in hydratable cement powder is prepared by introducing fiber precursors and cement clinker to a grinding mill and grinding the mixture until the clinker has been reduced to a fine powder. The fiber can be steel, alkaline resistant glass, ceramic, carbon or organic polymer, and preferably are steel, polyolefin or mixtures thereof.Type: GrantFiled: July 16, 1993Date of Patent: March 29, 1994Assignee: Vontech International CorporationInventor: Gary L. Vondran
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Patent number: 5292366Abstract: A composition for forming a waterproof, high strength, hard material having good insulation properties, comprising a mixture of crushed pumice and type S mortar, and preferably refractory additives or fillers, which forms the hard material upon the addition of water and after allowing the mixture to cure. The material has superior insulation properties to conventional compositions formed using portland cement instead of type S mortar.Type: GrantFiled: September 26, 1991Date of Patent: March 8, 1994Inventor: Joseph J. Miceli
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Patent number: 5268032Abstract: The present inventions relates to a method for the controlled hardening of cid-setting cements and binders by first providing an acid-setting binder within a selected mold. Mixing with the binder an electrolyte to form a paste or slurry within the mold. Subjecting the paste or slurry mixture to electrolysis for a selected period of time or until the binder is sufficiently hardened whereby a hardened article is produced. Finally, removing the produced article from the mold.Type: GrantFiled: October 16, 1992Date of Patent: December 7, 1993Assignee: The United States of America as represented by the Secretary of the ArmyInventors: Philip G. Malone, William N. Brabston
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Patent number: 5256349Abstract: A light weight formed body used for building materials, heat-insulating materials, furnitures, backing materials and the like, and a method for producing the same. In the light weight formed body and in the manufacturing method thereof, the principal material is a surface-reformed slag of which the reforming involves reforming through the dissolution reaction and the hydration reaction of glass and the reforming through dehydration of the surface-reformed slag above mentioned under heating, and one or more of a polymer dispersion, a reinforcing fiber, a coagulant, a light weight aggregate, a thickener, a dispersing agent, a pigment, a synthetic pulp, a needle- to fiber-shaped calcium silicate hydrate and a hydraulic gypsum are further used together with the above principal material.Type: GrantFiled: August 26, 1992Date of Patent: October 26, 1993Assignee: NKK CorporationInventors: Kazuyoshi Sato, Masakazu Hara, Hisaya Kamura
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Patent number: 5242649Abstract: A hydrated calcium silicate slurry composition is made up of 100 parts by weight of hydrated calcium silicate, 5 to 40 parts by weight of a powdered resin and water and molded articles are produced therefrom. In addition to the above components, 1 to 30 parts by weight of a reinforcing fiber and/or 20 to 35 parts by weight (as solids) of a latex or emulsion may be used. When the latex or emulsion is used, the powdered resin is reduced to an amount of 5 to 20 parts by weight. Since the molded calcium silicate articles have a superior workability and a good thermal dimensional stability, they are very useful especially in the preparation of molds or models where high levels of processing precision and thermal stability are required.Type: GrantFiled: April 19, 1991Date of Patent: September 7, 1993Assignee: Ube Industries, Ltd.Inventors: Akio Yamamoto, Hideo Uchiyama, Naohide Torigoe, Masaaki Nagai
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Patent number: 5228914Abstract: A composition for forming a hard material having good high temperature insulation, reflection and diffusion properties, comprising a mixture of crushed pumice, calcium aluminate cement and glass fibers, which forms the hard material upon the addition of water and after allowing the mixture to cure.Type: GrantFiled: June 22, 1992Date of Patent: July 20, 1993Inventor: Joseph J. Miceli
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Patent number: 5185039Abstract: A hydraulic composition comprises a hydraulic component and an organic hydrogel, and optionally aggregate, a reinforcing material and other additives and has a slump value, determined by the testing method of JIS A1101, of not more than about 1 cm in a concrete formulation and a flow value, determined by the testing method of JIS R5201, of not more than about 120 mm in a mortar or paste formulation.Type: GrantFiled: July 20, 1989Date of Patent: February 9, 1993Assignee: Nippon Zeon Co., Ltd.Inventors: Tetsuo Hamaguchi, Tsunehisa Ueda, Tadao Natsuume
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Patent number: 5173364Abstract: Glass fibre reinforced plasterboard comprising a gypsum matrix of high density with embedded staple glass fibres therewith forming a pressure resistant solid body frame in which are embedded a plurality of very small hollow spaces of 5-350 .mu.m diameter, produced by a fine-pore foam or at least partially by small particles of non-porous and non-water absorbing fillers. During the manufacturing process of such glass fibre reinforced gypsum board, the gypsum and the fibre pieces are given only so much water that the water/gypsum ratio does not exceed 0.6, whereafter a foam and/or pourable or free-flowing fillers are added in such quantities that the apparent density of the entire board is at least 20% smaller than the density of the bonding means component of the matrix and the paste are subjected while being formed, to a vibration.Type: GrantFiled: April 5, 1991Date of Patent: December 22, 1992Assignee: Redco, N.V.Inventor: Emmanuel H. C. A. Geeraert
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Patent number: 5167710Abstract: Process for making a cement mixture containing fibers wherein a paste is formed by mixing cement and, per 100 parts by weight of cement, approximately 5 to 20 parts by weight of a first pulverized material of which the grains have an average diameter of between 1/5 and 1/10 of the average diameter of the grains of the cement and approximately 20 to 35 parts by weight of water. The paste is then mixed with reinforcing fibers. The paste may also include a second pulverized material the average grain diameter of which is between 1/5 and 1/10 of the average diameter of the first pulverized material. The invention further includes products made from a cement mixture manufactured according to one of the foregoing processes.Type: GrantFiled: September 6, 1990Date of Patent: December 1, 1992Assignee: Saint-Gobain RechercheInventors: Michel Leroux, Francois Toutlemonde, Jean-Luc Bernard
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Patent number: 5120367Abstract: A device comprising a solid or powdered concrete admixture contained in a water-soluble container such that when the container and its contents are introduced into a wet mixer and agitated for a period of time, the water-soluble container is dissolved and the contents are released into the wet mixer. A separate water-insoluble receptacle is used to house and store the water-soluble container and its contents. In addition, there is disclosed a method for modifying the properties of a concrete by introducing a pre-weighed amount of solid admixture contained in a water-soluble container into a wet mixer and thereafter agitating the resulting mix.Type: GrantFiled: October 4, 1990Date of Patent: June 9, 1992Assignee: Fritz Chemical CompanyInventors: Dwight Smith, Jack L. Edwards
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Patent number: 5108679Abstract: A process for the production of concrete roofing products of reduced weight loading having a thickness in section of not greater than 15 mm. The process involves forming an asbestos-free cementitious composition comprising (i) lightweight aggregate, (ii) hydraulic cement, (iii) water and (iv) reinforcing fibers in an amount of not more than 4% by weight of the total weight of the composition but the fibers being present in an amount sufficient to provide a reinforcing effect and impact strength in the roofing product, the cementitious composition being capable of being shaped by a roller and slipper method, and thereafter shaping the cementitious composition by the method to provide a shaped extrudate, dividing the extrudate to form sections and curing the sections to provide roofing products, wherein the reinforcing fibers have lengths of 0.5 mm to 20 mm. The impact resistant roofing products are useful as roofing tiles, or a replacement for shingles, shakes and slates.Type: GrantFiled: November 2, 1990Date of Patent: April 28, 1992Assignee: Redland Roof Tile LimitedInventors: Eric Rirsch, Jeremy Wingfield
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Patent number: 5100474Abstract: A glass fibre reinforced composition of a settable mix of plaster, a water-based phenol formaldehyde resin, an acid hardener and a reinforcement of glass fibres. A product of this composition can be produced by spraying the fluid mix and fibre component separately but simultaneously onto a surface.Type: GrantFiled: August 16, 1990Date of Patent: March 31, 1992Assignee: Panel Craft-Benncroft LimitedInventor: Peter J. Hawkins
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Patent number: 5062897Abstract: A carbon fiber-reinforced hydraulic composite material having excellent mechanical strength, workability, and freezing-and-thawing resistance, wherein chopped carbon fibers having a monofilament tensile strength of from 140 kg/mm.sup.2 to 270 kg/mm.sup.2, and a monofilament diameter of from 15 .mu.m to 30 .mu.m are blended as the carbon fibers at a ratio of from 1% to 4% by volume with respect to the entire composite material to bring a flow index of the composite material before its hardening to 120 mm or above.Type: GrantFiled: February 16, 1990Date of Patent: November 5, 1991Assignee: Mitsubishi Kasei CorporationInventors: Haruo Katsumata, Hiromichi Sakai, Keisuke Takahashi, Hirofumi Ootaguro, Masashi Matsumoto, Moriyasu Nakamura, Tatsuo Ando
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Patent number: 5049196Abstract: A simple and inexpensive method of wetting a cement or gypsum-bonded fibrous mixture of building materials using water is characterized in that the water is added to the mixture of building materials at least partially in the form of a foam containing at least one foam forming surfactant and at least one foam stabilizer, or is added to the mixture of building materials in combination with at least one foam forming surfactant and at least one foam stabilizer prior to foam formation, and then at least partially foamed in situ, such that a sufficient quantity of water is present in the mixture to provide a final mixture exhibiting a powdery-crumbly consistency.Type: GrantFiled: April 20, 1989Date of Patent: September 17, 1991Assignee: Maschinenfabrik Gustav EirichInventor: Hans B. Ries
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Patent number: 5039345Abstract: An article and method for its manufacture are described. The article is preferably a ladle used in the manufacture of metals and receives molten metal for further chemical processing in the ladle or for transportation. The ladle is transparent to a wide range of electromagnetic radiation wavelengths which allows the metal to be heated or stirred by induction without heating the ladle itself. The ladle is made of glass fibers and an inorganic cement, and this provides strength along with high temperature resistance. The article is manufactured by winding glass fiber around a mandrel, the glass fiber having an inorganic cement adhered to it. In one technique, the cement is provided on the fiber as an aqueous slurry, and the product is allowed to air cure after winding. In a second technique, the cement is adhered to the fiber by electrostatic attraction.Type: GrantFiled: February 27, 1990Date of Patent: August 13, 1991Assignee: Advanced Metals Technology Corp.Inventor: John R. Mott