Perlite Or Vermiculite Containing (e.g., Jeffersite, Etc.) Patents (Class 106/675)
-
Patent number: 11346061Abstract: The present invention relates to a road surfacing system, in particular an asphalt road, which comprises at least one main layer which is at least partially and at least in places permeable to liquids and gases for absorbing compressive and shear forces generated on the main layer by load bodies, for example vehicles, travelling and/or standing on the main layer, wherein the main layer is arranged on a drainage layer through which liquids and/or gases can flow, and further where-in the drainage layer is again arranged on top of a drainage layer which is arranged and intended to at least partially drain liquids from the road surfacing system passing through the main and drainage layers, characterized in that the main layer is substantially free from aggregates and instead is formed with adhering ball elements formed with a plastic and/or a metal.Type: GrantFiled: July 21, 2020Date of Patent: May 31, 2022Inventor: Andreas Stieglbauer
-
Patent number: 11198645Abstract: The present invention provides calcium sulphate-based product having reduced shrinkage after exposure to high temperatures, the product comprising gypsum, a pozzolan source e.g. in an amount between 4-27 wt %) and a metal salt additive in an amount between 0.5 and 10 wt %). The pozzolan source may be selected from a kaolinitic clay material, fly ash, rice husk ash, diatomaceous earths, volcanic ashes and pumices, micro-silica, silica fume and silicone oil, The metal salt additive may be a metal salt which decomposes between a temperature of 300-500° C. to yield a metal oxide, e.g. magnesium nitrate.Type: GrantFiled: March 18, 2020Date of Patent: December 14, 2021Assignee: SAINT-GOBAIN PLACOInventors: Laura Brooks, Robin Fisher, Jan Rideout
-
Patent number: 11011147Abstract: A sheet material with a cellular structure wherein the sheet material is produced by preparing a composition including PVC, a filler material and a plasticiser and providing a cellular structure within the composition prior to curing to form the sheet material. The composition may further include a cellular structure promoting agent. The sheet material with a cellular structure may be used in building applications and has advantageous sound attenuation, thermal conductivity, resilience and impact resistance properties.Type: GrantFiled: February 12, 2016Date of Patent: May 18, 2021Inventors: Philippe Pierre Marie Joseph Doneux, Bela Takacs
-
Patent number: 10816535Abstract: The present invention relates to the field of material determination or analysis, and provides a method of assessing drying depth of cementitious materials including the following steps: preparing a plurality of cementitious material specimens; drying the cementitious material specimens; conducting electrochemical impedance spectrum measurement on each cementitious material specimen; accordingly determining a model for analyzing the drying depth of the cementitious material specimen. The method of assessing drying depth of the cementitious material provided by the present invention takes the influence of the resistivity changes on the model into consideration, and the drying depth of the cementitious material is reflected and reckoned with regularly changes of the electrochemical parameters, not only increasing the accuracy but also saving much testing labor, time and cost.Type: GrantFiled: January 10, 2018Date of Patent: October 27, 2020Assignee: SHENZHEN UNIVERSITYInventors: Hongfang Sun, Feng Xing, Zhili Ren, Dawang Li, Jian Liu, Bing Fan
-
Patent number: 10752550Abstract: The present invention refers to a new concrete composition comprising fiberglass waste and an air-entraining additive. The concrete presents a thermo-insulating performance far superior to conventionally produced concretes. The present invention is mainly intended for the construction industry, in non-structural applications for thermal insulation. The use of fiberglass waste reduces the consumption of natural aggregates and allows for the use of waste which is expense to dispose of.Type: GrantFiled: May 16, 2019Date of Patent: August 25, 2020Assignees: VALE S.A., Universidade Federal De Ouro Preto—UFOPInventors: Renata Eliane Frank Vasconcelos, Júlia Castro Mendes, Ricardo Andre Fiorotti Peixoto
-
Patent number: 10392308Abstract: This application relates to making magnesium oxychloride boards. A magnesium oxychloride slurry is mixed by directing magnesium chloride, magnesium oxide, at least one phosphate, at least one inorganic salt, and water into a mixer and mixing these ingredients together to form a slurry. At least one filler is then mixed with the slurry. The slurry is directed to a mold. The mold is formed with the slurry to form a magnesium oxychloride board. The magnesium oxychloride board is then cured.Type: GrantFiled: April 4, 2016Date of Patent: August 27, 2019Inventor: Futong Cui
-
Patent number: 10029947Abstract: Hydrophobic aggregates for use in refractory castables and gunning mixtures and methods of their preparation. The aggregates here are formed by crushing insulating fire brick and coating the resulting particles with a hydrophobic component. The hydrophobic component may be a polydimethylsiloxane having a terminal silanol group. As a result of the coating process, the coated aggregate has very low levels of alkalis. The aggregates may be used to form refractory castables that do not undergo substantial alkaline hydrolysis due to the reduced levels of alkalis. The castables made from these aggregates display superior physical properties, including lower water content, lower permanent linear change, high strength, and superior thermal conductivity/insulation properties, while at the same time possessing lower density and requiring less water to be used during castable formation. These improved properties also are observed in gunning mixtures formed from these aggregates.Type: GrantFiled: May 16, 2014Date of Patent: July 24, 2018Assignee: BNZ Materials, Inc.Inventors: Kenneth J. Moody, Bryan K. Doerr
-
Patent number: 9732524Abstract: Disclosed herein are low density fiber cement articles, such as fiber cement building panels and sheets, comprised of multiple overlaying fiber cement substrate layers having small and uniform entrained air pockets and low density fillers distributed throughout. The combination of entrained air pockets and low density fillers provide a low density fiber cement matrix with physical and mechanical properties similar to comparable low density fiber cement matrix without entrained air pockets.Type: GrantFiled: November 26, 2014Date of Patent: August 15, 2017Assignee: James Hardie Technology LimitedInventors: Sarah Grundy, Kelvin Lau, Xiangyuan Liu, Thomas Patrick Mueller, Joe Zhou Peng, Steven Terzian
-
Patent number: 9688933Abstract: The charcoal-foam heating material is formed by combining a charcoal mixture with an aqueous surfactant and water to create a semi-homogenous charcoal-foam slurry. The slurry is poured into shaping molds so that the slurry dries into the charcoal-foam heating material. In the preferred embodiment, a concrete surfactant is used during the mixing process and the charcoal-foam slurry is formed into briquettes and used as a cooking fuel.Type: GrantFiled: September 11, 2009Date of Patent: June 27, 2017Assignee: The United States of America, as represented by The Secretary of AgricultureInventors: Gregory M. Glenn, Syed Hussain Imam, Artur Klamczynski
-
Patent number: 9670096Abstract: A density controlled cold fusion concrete cementitious spray applied fireproofing material including a mixture of water, one or more of silicon dioxide, expanded glass, vermiculite, bottom ash, perlite, expanded shale, or other lightweight aggregates of various diameter sizes ranging from about 0.025 mm to about 12.5 mm in diameter; anhydrous or hydrous sodium or potassium metasilicate; waste from steel production consisting of Granulated Ground Blast Furnace Slag (GGBFS); high calcium or low calcium waste from coal combustion (fly ash or bottom ash); sodium tetraborate, sodium citrate dihydrate, citric acid, or boric acid; and an alkali-resistant micro-.Type: GrantFiled: August 4, 2016Date of Patent: June 6, 2017Assignee: GEOPOLYMER SOLUTIONS LLCInventor: Rodney Zubrod
-
Patent number: 9593797Abstract: According to one aspect, a hybrid high temperature thermal insulation includes a mix of inorganic granules. The granular mix includes at least 70 weight percent porous inorganic granules in the form of expanded perlite, and at most 30 weight percent second porous inorganic granules other than expanded perlite. The hybrid insulation also includes a binder. In example formulations, the second porous inorganic particles may be made from crushed aerogel, from fumed silica, from precipitated silica, or from other substances. The hybrid insulation may be formed into preferred shapes, for example a board shape or a semi-cylindrical shape configured to fit over a round tube of a predetermined diameter.Type: GrantFiled: January 30, 2015Date of Patent: March 14, 2017Assignee: Johns ManvilleInventors: Ames Kulprathipanja, Rick Lee Dolin, Severiano Almidon Lopez
-
Patent number: 9446988Abstract: Various building materials constructed from different recycled components are provided. Such materials include boards, bricks, and the like, and exhibit differing levels of tensile strength, heat resistance, and other physical and chemical properties. The capability of introducing varied collected items, including paper, paperboard, clothing fibers, wood chips and strips, raffia bags, used engine oil, etc., and produce a resilient and dimensionally stable building material is presented herein. Replacement of timber and concrete is permitted with such a new material based upon renewable resources. The method of production and use of such materials is encompassed herein as well.Type: GrantFiled: January 20, 2015Date of Patent: September 20, 2016Assignee: Ahmed Maher GhalayiniInventor: Ahmed Maher Ghalayini
-
Patent number: 9316342Abstract: This invention pertains to a layered sheet comprising a flame resistant wet-laid nonwoven carrier having a first and second surface and an inorganic refractory layer adjacent to at least one surface of the carrier wherein the refractory layer has a dry area weight of from 15 to 50 gsm, the bond strength between the refractory layer and the surface of the carrier is at least 0.25 lb/in, wherein the carrier comprises from 40 to 70 weight percent of aramid fibers and from 30 to 60 weight percent of polymeric binder, is hydrophilic, has a smoothness on at least one surface of no less than 250 Sheffield units, a thickness of from 0.025 to 0.175 mm and a density of from 0.25 to 0.60 g/cc. Preferably the carrier is in the form of a paper.Type: GrantFiled: April 17, 2013Date of Patent: April 19, 2016Assignee: E I DU PONT DE NEMOURS AND COMPANYInventor: Dariusz Wlodzimierz Kawka
-
Patent number: 9260347Abstract: A formulation of a spray applied fire-resistive engineered cementitious composite (SFR-ECC) which is made by addition of polymeric fibers, vermiculite, bonding agent and lightweight aggregates to cement and water. The SFR-ECC formulation is made in wet cement and can be spray-applied. The durable SFR-ECC exhibits thermal conductivities sufficient for fire resistance with increased tensile ductility and impact resistance.Type: GrantFiled: March 25, 2015Date of Patent: February 16, 2016Assignee: The Regents Of The University Of MichiganInventors: Victor C. Li, Qian Zhang
-
Patent number: 9126864Abstract: A concrete mix for producing freeze-thaw durable concrete having enhanced strength properties, like compressive strength, abrasion resistance, impact strength, toughness, is disclosed. The novel concrete mix contains deformable solid elements in place of 4-8% entrained air for good durability of concrete under freeze-thaw cycles.Type: GrantFiled: November 13, 2014Date of Patent: September 8, 2015Assignee: NAVS, LLCInventor: Ashok H. Shah
-
Patent number: 9090514Abstract: An expandable refractory for high temperature sealing, the expandable refractory includes un-expanded vermiculite and one or more mixtures of ceramic fibers in a water based refractory binder.Type: GrantFiled: September 5, 2013Date of Patent: July 28, 2015Assignee: FUELCELL ENERGY, INC.Inventors: Dennis Robert Farrenkopf, Michael Quatannens
-
Patent number: 9034097Abstract: A composition for the preparation of a fire protection mortar comprising 45 to 70% by weight of cement binder, 8 to 20% by weight calcite, 8 to 20% by weight mica, 0 to 5% by weight of xonotlite, 0.1 to 20% by weight of expanded perlite, 0.1 to 10% by weight of fibers, 0.01 to 2% by weight of air entrainer and foaming agent, 0.01 to 2% by weight of processing aids.Type: GrantFiled: February 4, 2014Date of Patent: May 19, 2015Assignee: Promat Research and Technology Centre NVInventors: Xiao Wu, Ann Opsommer
-
Publication number: 20150122153Abstract: A process for producing insulating foam, wherein certain especially small inorganic minerals such as silica fume are directly integrated into bubble fluid to better mechanically strengthen bubbles formed and thus allow the formation of smaller bubbles to be reformed by mechanical means. In this process where these same bubbles are now in some part composed of inorganic solids. A process whereby these minerals are maintained as to their median size and dispersion within the bubble fluid by the following; rotor stator mixing and or a recirculating pump, the inclusion within exotherming calcium-chloride salt, the use of other physical exciters such as hydrogen-peroxide, and by straining out outliers of unwanted size or form.Type: ApplicationFiled: November 7, 2014Publication date: May 7, 2015Applicant: AIR KRETE, INC.Inventors: Terry P. Warner, R. Keene Christopher
-
Publication number: 20150107490Abstract: Methods and compositions are provided that related to cementing operations. Methods and compositions that include pumice and/or perlite as a replacement for fly ash.Type: ApplicationFiled: December 29, 2014Publication date: April 23, 2015Applicant: HALLIBURTON ENERGY SERVICES, INC.Inventors: Jeffery D. Karcher, D. Chad Brenneis, Lance E. Brothers
-
Patent number: 9011708Abstract: The present invention relates to a thermal insulator using closed cell expanded perlite. The thermal insulator using closed cell expanded perlite of the present invention includes: expanded perlite 10 to 84 wt %ç, including dried and expanded perlite ore particles, having a surface with a closed cell shape, as an active ingredient; a liquid binder 15 to 85 wt %; and a reinforcing fiber 0.25 to 5 wt %. Accordingly, the present invention provides a thermal insulator, which enhances the rigidity of expanded perlite, minimizes porosity and gaps between the expanded perlite particles, by reducing compression ratio during compression molding, which results in lower density, improves constructability by lowering thermal conductivity, reduces material and energy costs and can reduce the area required for equipment installation by reducing the thickness of the thermal insulator.Type: GrantFiled: March 3, 2011Date of Patent: April 21, 2015Assignee: Kyungdong One CorporationInventors: Bum-Gyu Baek, Sang-Yun Lee
-
Publication number: 20140264140Abstract: A composite binder comprises: one or more Class F fly ash materials, one or more gelation enhancers, and one or more hardening enhancers, wherein each of the one or more Class F fly ash materials comprises 15 wt. % or less calcium oxide, and wherein the composite binder is a Portland cement-free binder for concrete. Also provided are Geopolymer Composite Cellular Concretes (GCCCs) including the composite binder and methods of making these GCCCs.Type: ApplicationFiled: February 28, 2014Publication date: September 18, 2014Applicant: The Catholic University of AmericaInventors: Weiliang GONG, Werner LUTZE, Ian L. PEGG
-
Publication number: 20140123878Abstract: The invention relates to a process for the production of binders by calcinating mineral raw material mixtures. In order to improve the process and the quality of the binders, it is proposed that oil shale and/or oil sand fills are converted by targeted agglomeration into particles of a certain size and consistency, wherein the water content for the mechanical stabilization of the agglomerate is adjusted to less than 25 percent and the agglomerates are calcinated to form binders at temperatures between 800 and 1500° C. under reductive conditions over the entire process with a Lambda value <1 in a vertical shaft furnace with updraft gasification. The binding properties are adjusted by the targeted addition of CaO-containing substances and/or existing sulfur fractions of the oil sands and/or oil shales are bound by means of the CaO that is present in the starting material and/or added.Type: ApplicationFiled: March 16, 2012Publication date: May 8, 2014Applicant: ECOLOOP GmbHInventors: Thomas Stumpf, Ulf Boenkendorf, Leonhard Baumann, Roland Möller
-
Publication number: 20140060389Abstract: Embodiments relate to cementing operations and, more particularly, in certain embodiments, to settable compositions that comprise kiln dust and wollastonite and methods of use in subterranean formations. An embodiment discloses a method of cementing comprising: providing a settable composition comprising kiln dust, wollastonite, and water; and allowing the settable composition to set.Type: ApplicationFiled: November 13, 2013Publication date: March 6, 2014Applicant: Halliburton Energy Services, Inc.Inventors: Jiten Chatterji, Darrell Chad Brenneis, Baya Adams, Craig Wayne Roddy
-
Publication number: 20130126166Abstract: Methods and compositions are provided that related to cementing operations. Methods and compositions that include pumice and/or perlite as a replacement for fly ash.Type: ApplicationFiled: November 21, 2011Publication date: May 23, 2013Applicant: HALLIBURTON ENERGY SERVICES, INC.Inventors: Jeffery Dwane Karcher, Chad Brenneis, Lance E. Brothers
-
Patent number: 8398763Abstract: Embodiments include a method, mixture, and system for increasing a friction coefficient of a surface or increasing or maintaining traction of an object on the surface. In one embodiment, the mixture comprises pulverized lime, fine sand, granite fines, gypsum, and expanded perlite. The mixture may optionally further comprise dye. In an embodiment, the method comprises mixing pulverized lime, fine sand, granite fines, and gypsum with one another to form a first mixture; and mixing expanded perlite with the first mixture to provide a product mixture for increasing the friction coefficient of the surface or increasing or maintaining traction of an object on the surface. In some embodiments, the expanded perlite may be mixed with dye prior to mixing the expanded perlite with the first mixture.Type: GrantFiled: April 17, 2012Date of Patent: March 19, 2013Assignee: Unstuck, LLCInventor: Douglas J. Bonnizzio
-
Patent number: 8329785Abstract: A wall repair compound useful for filling and repairing cracks, holes, and other imperfections in a wall surface includes a conventional filler material, a conventional binder material, and a dust reducing additive which reduces the quantity of airborne dust particles generated when sanding the hardened joint compound. Airborne dust reducing additives include oils, surfactants, solvents, waxes, and other petroleum derivatives. The additive can be added to conventional ready-mixed joint compounds and to setting type joint compounds. A method of reducing the quantity of airborne dust generated when sanding a fully hardened joint compound includes mixing a sufficient quantity of the dust reducing additive with the joint compound prior to when the joint compound has been applied to the wall.Type: GrantFiled: May 21, 2008Date of Patent: December 11, 2012Assignee: 3M Innovative Properties CompanyInventor: Nathaniel P. Langford
-
Publication number: 20120256340Abstract: Disclosed is an anthropic stone material made by the introduction of water to a particulate casting mix comprising a lightweight component comprising a mixture of exfoliated vermiculite and a volcanic component selected from the group consisting of exfoliated perlite, pumice, and mixtures thereof, said exfoliated vermiculite and volcanic component mixed in a ratio range of 2:1 to 1:2 by volume, a cementitious component, and wherein said lightweight component and cementitious component are mixed in a ratio range of from about 3:2 to 2:3 by volume.Type: ApplicationFiled: April 10, 2012Publication date: October 11, 2012Inventor: JOAN M. BARGER
-
Collapsible material, placement rack, incineration method, lost-wax mold, and mold collapsing method
Patent number: 8250994Abstract: A collapsible material is provided which maintains a predetermined strength and shape until it is heated and increased in temperature to a desired temperature and then can collapse, after a lapse of a predetermined time. The collapsible material of the present invention is characterized by comprising a base formed of a hydrate of a hydraulic material and unexpanded vermiculite particles dispersed in the base. In the collapsible material of the present invention, it is preferable that the hydraulic material is formed of at least one of cement and gypsum and the unexpanded vermiculite particles are contained in an amount of 0.5 to 15 wt %. Also, in the collapsible material of the present invention, it is preferable that ash balloon particles are contained in an amount of 0.5 to 20 wt %. Further, in the collapsible material of the present invention, it is preferable that a coating film formed of a hydrate of the hydraulic material and silica powder is formed on the surface of the base.Type: GrantFiled: June 16, 2008Date of Patent: August 28, 2012Assignees: Kazo Shirasaki, Norihito ShirasakiInventors: Kazuo Shirasaki, Yozaburo Osawa -
Publication number: 20120192767Abstract: A durable concrete composition includes a cementitious material comprising cement and ground expanded perlite, coarse aggregate, fine aggregate, and sufficient water for adequate workability. The resulting concrete displays a number of superior properties to conventional concrete, including extremely high thermal resistance coupled with high strength, low chloride ion permeability, and good early strength. The ground expanded perlite is a readily available material and the finished concrete is extremely cost effective for applications where a high strength structural concrete must withstand high temperatures. The mixture can be handled and placed by conventional methods and is compatible with existing conventional concrete additives.Type: ApplicationFiled: January 24, 2012Publication date: August 2, 2012Inventors: Terry L. Anderson, John Andrew Coleman, Neal S. Berke
-
Calcium Aluminate Clinker as a Refractory Aggregate with and without Barium Addition and Use Thereof
Publication number: 20120180703Abstract: The present invention provides for a refractory aggregate composition comprising an improved calcium aluminate clinker having the formula CnAx wherein C is calcium oxide and A is aluminum oxide, wherein n is an integer from about 1 to about 12, wherein x is an integer from about 1 to about 24, and wherein said clinker has from zero to less than about fifty weight percent C12A7, and including a source of barium that is substituted for calcium in said calcium aluminate clinker. Analogs, derivatives and hydrates of the improved calcium aluminate clinker are provided. A refractory composition and a sprayable refractory composition are disclosed comprising the improved calcium aluminate clinker. A method for improving the insulating character and/or penetration resistance of a liner in contact with molten aluminum in an aluminum manufacturing process or during aluminum transport is provided.Type: ApplicationFiled: January 25, 2012Publication date: July 19, 2012Inventor: Kenneth A. McGowan -
Patent number: 8172938Abstract: A silica cement blend having an insulating, fire retarding and high temperature characteristic capable of withstanding temperatures ranging from ambient to greater than 40000 F without degradation of the concrete structure. In addition to its high temperature capabilities the blend can be produced as ultra light weight to heavy weight concrete. The silica based mixture when added to cementitious materials such as Portland cement, Class C Fly Ash, silica fume and other cementitious materials. Presented also are methods for reducing fire damage by coating interior/exterior walls, ceiling, and roofs of a building with a water based latex coating containing a fire retardant material and low heat conductivity silicas. Methods for painting internal/external walls, ceilings, and roof are also presented.Type: GrantFiled: June 30, 2009Date of Patent: May 8, 2012Assignee: Specialty Concrete Design, Inc.Inventors: John Alright, David Wayne Taylor
-
Patent number: 8172937Abstract: A lightweight pervious cellular concrete is provided. The concrete has an internal structure comprising interconnected channels, resulting in a permeability K value of less than about 1×10?5, and as low as about 1. The cellular concrete has a density range of between 10 to about 100 pounds per cubic foot, with a compressive strength of between about 10 to about 1000 psi.Type: GrantFiled: October 11, 2007Date of Patent: May 8, 2012Assignee: Cellular Concrete, LLCInventors: Brian Masloff, Richard Palladino
-
Publication number: 20120040165Abstract: Cementitious compositions and methods for making same, in which the cementitious compositions include 35-60 wt. % cementitious reactive powder (also termed Portland cement-based binder), 2-10 wt. % expanded and chemically coated perlite filler, 20-40 wt. % water, entrained air, and optional additives such as water reducing agents, chemical set-accelerators, and chemical set-retarders. In addition, the lightweight cementitious compositions may contain 0-25 wt. % on a wet basis secondary fillers such as expanded clay, shale aggregate, and pumice.Type: ApplicationFiled: October 27, 2011Publication date: February 16, 2012Applicant: United States Gypsum CompanyInventor: Ashish DUBEY
-
Patent number: 8110040Abstract: A lightweight structural concrete is composed of coarse structural aggregate sized between ¼? to ½? occupying 15% to 25% of total concrete volume, large non-structural lightweight aggregate such as expanded polystyrene bead of a particular size distribution and volume amount, small size non-structural lightweight aggregate or entrained air cells of another specific size distribution and volume amount, and a dense cementitious composition comprising cement binder, pozzolan, and fine structural filler no larger than concrete sand ASTM C33.Type: GrantFiled: April 4, 2009Date of Patent: February 7, 2012Inventor: Thuan Bui
-
Publication number: 20110297048Abstract: A foaming agent solution, cement material and concrete replacement product are described which include blood hydrolysates. The blood hydrolysates may be present in the foaming agent solution in the range 5-30% by volume of the solution.Type: ApplicationFiled: December 30, 2009Publication date: December 8, 2011Applicant: GENESIS GLOBAL LIMITEDInventor: Anthony S.M. George
-
Patent number: 8038790Abstract: Structural cement panel for resisting transverse and shear loads equal to transverse and shear loads provided by plywood and oriented strain board, when fastened to framing for use in shear walls, flooring and roofing systems. The panels provide reduced thermal transmission compared to other structural cement panels. The panels employ one or more layers of a continuous phase resulting from curing an aqueous mixture of calcium sulfate alpha hemihydrate, hydraulic cement, coated expanded perlite particles filler, optional additional fillers, active pozzolan and lime. The coated perlite has a particle size of 1-500 microns, a median diameter of 20-150 microns, and an effective particle density (specific gravity) of less than 0.50 g/cc. The panels are reinforced with fibers, for example alkali-resistant glass fibers. The preferred panel contains no intentionally added entrained air. A method of improving fire resistance in a building is also disclosed.Type: GrantFiled: December 23, 2010Date of Patent: October 18, 2011Assignee: United States Gypsum CompanyInventors: Ashish Dubey, Cesar Chan
-
Publication number: 20110155019Abstract: A silica cement blend having an insulating, fire retarding and high temperature characteristic capable of withstanding temperatures ranging from ambient to greater than 40000 F without degradation of the concrete structure. In addition to its high temperature capabilities the blend can be produced as ultra light weight to heavy weight concrete. The silica based mixture when added to cementitious materials such as Portland cement, Class C Fly Ash, silica fume and other cementitious materials. Presented also are methods for reducing fire damage by coating interior/exterior walls, ceiling, and roofs of a building with a water based latex coating containing a fire retardant material and low heat conductivity silicas. Methods for painting internal/external walls, ceilings, and roof are also presented.Type: ApplicationFiled: June 30, 2009Publication date: June 30, 2011Inventors: John Albright, David Wayne Taylor
-
Publication number: 20100310846Abstract: Lightweight cementitious foams of the invention have excellent dynamic and dimensional stability due to use of foaming system comprising polycarboxylate surfactant foam generating agent, foam stabilizer (e.g., PVOH), and shrinkage reducing admixture to inhibit plastic shrinkage and micro-cracking of cement. The foaming system can be used in conventional cement mortars or concretes as well as with exemplary cementitious slurry systems of the invention, which include an expansive agent, a cross-linking agent for the foam stabilizer. Microfibers can be used in the foam, slurry, or both, to prevent micro-cracking. Cementitious foams can be made without use of autoclave or lightweight aggregates to achieve enhanced compressive strength and thermal insulation properties that compare favorably with conventional foams and insulation materials at comparable densities.Type: ApplicationFiled: June 5, 2009Publication date: December 9, 2010Inventors: Neal S. Berke, Jordan S. Merritt, Lianfang Li, Antonio J. Aldykiewicz, JR., Robert A. Wiercinski, Michael D. Morgan
-
Patent number: 7731792Abstract: Disclosed herein is a method for producing a recycled hardened material using waste gypsum. The method comprises treating acidic wastewater generated in the production of copper, zinc or titanium or the production of sodium hydroxide (caustic soda) and chlorine using saline water, with calcium hydroxide (slaked lime), so as to precipitate sludge, and mixing the precipitated sludge with pulp sludge ashes having pozzolanic properties.Type: GrantFiled: July 7, 2005Date of Patent: June 8, 2010Inventor: Jong-Won Park
-
Publication number: 20100101457Abstract: Sheathing panels are produced by methods which do not require natural resources such as wood and use significantly reduced embodied energy when compared with the energy used to fabricate gypsum sheathing panels. A novel binder, consisting in one embodiment of monopotassium phosphate and magnesium oxide, and combined with various fillers, is used to provide a controlled exothermic reaction to create a gypsum board-like core which can be formed into a suitable sheathing panel handled and installed in a typical manner. The panel is manufactured to have a desirable shear resistance and water vapor permeability, important performance elements in building envelope design. The manufacturing process results in a panel that does not require mature trees as source material, does not off gas, and involves much lower greenhouse gas emissions than the processes used to make traditional wood or gypsum-based sheathing panels.Type: ApplicationFiled: May 25, 2007Publication date: April 29, 2010Inventors: Kevin J. Surace, Brandon D. Tinianov
-
Publication number: 20090151603Abstract: 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.Type: ApplicationFiled: December 13, 2007Publication date: June 18, 2009Applicant: Georgia-Pacific Gypsum LLCInventor: Hubert C. Francis
-
Publication number: 20090151602Abstract: 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.Type: ApplicationFiled: December 13, 2007Publication date: June 18, 2009Applicant: Georgia-Pacific Gypsum LLCInventor: Hubert C. Francis
-
Publication number: 20090130452Abstract: Wallboards, as well as other building materials, are produced by methods which use significantly reduced embodied energy, generating far less greenhouse gases when compared with the energy used to fabricate gypsum wallboard. A novel cementitious core, consisting in one embodiment of post-industrial waste such as slag and combined with pH modifiers, provides a controlled exothermic reaction to create a gypsum-wallboard-like core which can be wrapped in a selected material such as recycled paper and manufactured on a conveyor system to appear, weigh and handle similar to gypsum wallboard, but without the large amounts of energy required to make gypsum wallboard. The manufacturing process results in lower greenhouse gas emissions than the processes used to make gypsum wallboard.Type: ApplicationFiled: March 31, 2008Publication date: May 21, 2009Inventors: Kevin Surace, Meredith Ware, Denise Hoover, Jiaping Han, Tiandan Chen
-
Publication number: 20090071376Abstract: A lightweight pervious cellular concrete is provided. The concrete has an internal structure comprising interconnected channels, resulting in a permeability K value of less than about 1×10?5, and as low as about 1. The cellular concrete has a density range of between 10 to about 100 pounds per cubic foot, with a compressive strength of between about 10 to about 1000 psi.Type: ApplicationFiled: October 11, 2007Publication date: March 19, 2009Applicant: Cellular Concrete, LLCInventors: Brian Masloff, Richard Palladino
-
Publication number: 20090011207Abstract: Cementitious compositions and methods for making same, in which the cementitious compositions include 35-60 wt. % cementitious reactive powder (also termed Portland cement-based binder), 2-10 wt. % expanded and chemically coated perlite filler, 20-40 wt. % water, entrained air, and optional additives such as water reducing agents, chemical set-accelerators, and chemical set-retarders. In addition, the lightweight cementitious compositions may contain 0-25 wt. % on a wet basis secondary fillers such as expanded clay, shale aggregate, and pumice.Type: ApplicationFiled: July 5, 2007Publication date: January 8, 2009Applicant: United States Gypsum CompanyInventor: Ashish DUBEY
-
Patent number: 7407996Abstract: A wall repair compound useful for filling and repairing cracks, holes, and other imperfections in a wall surface includes a conventional filler material, a conventional binder material, and a dust reducing additive which reduces the quantity of airborne dust particles generated when sanding the hardened joint compound. Airborne dust reducing additives include oils, surfactants, solvents, waxes, and other petroleum derivatives. The additive can be added to conventional ready-mixed joint compounds and to setting type joint compounds. A method of reducing the quantity of airborne dust generated when sanding a fully hardened joint compound includes mixing a sufficient quantity of the dust reducing additive with the joint compound prior to when the joint compound has been applied to the wall.Type: GrantFiled: February 17, 2006Date of Patent: August 5, 2008Assignee: 3M Innovative Properties CompanyInventor: Nathaniel P. Langford
-
Publication number: 20080176967Abstract: 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.Type: ApplicationFiled: February 12, 2008Publication date: July 24, 2008Inventor: Thuan BUI
-
Publication number: 20080149285Abstract: This invention is directed to a method of reducing the water demand of expanded perlite that includes obtaining a vibrating screen supported at an angle and placing expanded perlite on the vibrating screen. The expanded perlite is moved over the screen past toward a burner at a rate that heats the expanded perlite to a temperature sufficient to anneal it. The expanded perlite is then moved away from the burner and allowed to cool. Another embodiment of this invention is directed to a method of making a gypsum product. The method includes annealing perlite by the method described above, then preparing a slurry of calcium sulfate hemihydrate, additives, water and the annealed perlite. The slurry is formed into the shape of the gypsum product and allowed to set. This process is particularly useful in making gypsum panels and acoustical panels that benefit from the use of lightweight materials.Type: ApplicationFiled: December 21, 2006Publication date: June 26, 2008Inventor: Christopher R. Nelson
-
Patent number: 7381261Abstract: This invention is directed to a method of reducing the water demand of expanded perlite that includes obtaining a vibrating screen supported at an angle and placing expanded perlite on the vibrating screen. The expanded perlite is moved over the screen past toward a burner at a rate that heats the expanded perlite to a temperature sufficient to anneal it. The expanded perlite is then moved away from the burner and allowed to cool. Another embodiment of this invention is directed to a method of making a gypsum product. The method includes annealing perlite by the method described above, then preparing a slurry of calcium sulfate hemihydrate, additives, water and the annealed perlite. The slurry is formed into the shape of the gypsum product and allowed to set. This process is particularly useful in making gypsum panels and acoustical panels that benefit from the use of lightweight materials.Type: GrantFiled: December 21, 2006Date of Patent: June 3, 2008Assignee: United States Gypsum CompanyInventor: Christopher R. Nelson
-
Patent number: RE42511Abstract: Bonded aggregate compositions such as concrete, concrete repair products, high temperature refractories, high temperature insulation and fire resistant insulation are made from an aqueous solution of phosphoric acid and a separate, storable dry mixture of suitable aggregate, monocalcium phosphate, and calcium in the form of calcium aluminate cement or calcium oxide. The proportion of wet to dry constituents is variable so as to select the working time and strength of the aggregate composition, typically on the order of ten to fifteen minutes. The mixture of the preferred dry constituents, and the binder to be mixed with the aggregate to yield the preferred dry mixture, are also disclosed.Type: GrantFiled: September 10, 2004Date of Patent: July 5, 2011Assignee: Stellar Materials IncorporatedInventors: Jean Tremblay, David Mintz, Neil Mintz