Aluminous Cement (e.g., High Alumina, Calcium Aluminate, Etc.) Patents (Class 106/692)
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Publication number: 20140109799Abstract: The present invention relates to a current composition for cementing oil or gas wells. The composition comprises calcium aluminate cement in which the proportion of HC203 is at least 50% by weight, dispersant, microsilica, mineral particles, water and optionally a retarder.Type: ApplicationFiled: September 26, 2011Publication date: April 24, 2014Applicant: ELKEM ASInventors: Phillippe Revil, Hong Peng
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Publication number: 20140096705Abstract: A process for treating fly ash to activate the fly ash so that it may be used as a substitute for Portland cement, with the process including the use of a specialized rotary mill having variably sized and shaped media to increase the surface area of one fly ash component by grinding, avoiding milling a second fly ash component, while roughing up the surface of the second component to increase its surface area.Type: ApplicationFiled: October 9, 2012Publication date: April 10, 2014Inventor: Clinton Wesley Pike, SR.
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Patent number: 8668010Abstract: A method of servicing a wellbore comprising preparing a composition comprising a calcium aluminate cement, water, and a fluid loss additive wherein the fluid loss additive comprises an acid gelling polymer, placing the composition in the wellbore, and allowing the composition to set. A method of servicing a wellbore comprising placing into a wellbore having a bottom hole static temperature of greater than about 50° F. and/or a pH of from about 3 to about 9 a cement slurry comprising a calcium aluminate cement having an aluminum oxide content of greater than about 60 wt. % based on the total weight of the calcium aluminate cement and an acid-gelling polymer wherein the cement slurry has a fluid loss at 10 cc/10 min. to about 600 cc/30 min.Type: GrantFiled: December 6, 2010Date of Patent: March 11, 2014Assignee: Halliburton Energy Services, Inc.Inventors: Trissa Joseph, Pankaj Phani Chakraborty, B. Raghava Reddy
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Publication number: 20140060767Abstract: The disclosure relates generally to mold compositions comprising calcium aluminate and calcium titanate. The disclosure also relates to methods of molding and the articles so molded using the mold compositions. More specifically, the disclosure relates to calcium aluminate/calcium titanate mold compositions and methods for casting titanium-containing articles, and the titanium-containing articles so molded.Type: ApplicationFiled: August 29, 2012Publication date: March 6, 2014Applicant: GENERAL ELECTRIC COMPANYInventors: Bernard Patrick BEWLAY, Joan MCKIEVER, Brian Michael ELLIS, Nicholas Vincent MCLASKY
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Publication number: 20140054038Abstract: Well cement compositions comprise water, an inorganic cement and one or more fillers having a thermal expansion coefficient (CTE) that is lower than about 3×10?6/° C. The presence of low-CTE fillers may reduce cement-sheath shrinkage when the well temperature falls during stimulation treatments, cyclic steam injection or when the well temperature reaches equilibrium at the top of a long casing string.Type: ApplicationFiled: August 27, 2012Publication date: February 27, 2014Inventor: Simon Gareth James
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Patent number: 8652248Abstract: A cement mix for preparation of a magnesium silico-phosphate cement (MSPC) with an altered hardening rate is provided. The cement mix comprises on the order of 1% of an [MF6]n? salt or acid. Upon addition of water, the mix produces a final set cement that has similar physical properties to those of a cement prepared from a mix lacking the additive, but with a significantly altered setting time. In some embodiments of the invention, the additive is provided in the form of a coating for the MgO component of the mix. In preferred embodiments, H2TiF6, Na2TiF6 and/or K2TiF6 are used as retarders, while K3AlF6 is used as an accelerant. Other embodiments use M?nMF6 compounds wherein M? is an alkali metal, an alkaline earth metal, or H, and M is chosen from inter alia Ti (n=2), Zr (n=2), P (n=1), Al (n=3), and Sb (n=1).Type: GrantFiled: February 4, 2013Date of Patent: February 18, 2014Assignee: Imi Tami Institute For Research and Development LtdInventors: Aharon Weissman, Yelena Gorelik, Eyal Yehihel Vultz, Dorit Perle, Basam Masri, Gideon Shikolsky, Ezrah Hanuka, Ron Frim, Eyal Ginzberg
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Patent number: 8636068Abstract: Methods and compositions that protect cement compositions from corrosion, particularly from wet carbon dioxide, are provided. A soluble salt additive is provided to react with reaction products generated during the reactions that occur when cement is exposed to wet carbon dioxide. The soluble salt reacts to form an insoluble salt that forms a protective layer on the surface of the cement that protects it from further corrosion from exposure to wet carbon dioxide.Type: GrantFiled: July 28, 2008Date of Patent: January 28, 2014Assignee: Baker Hughes IncorporatedInventors: Mark Alan Vorderbruggen, Richard F. Stevens, Qi Qu
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Patent number: 8623936Abstract: Methods and compositions are provided that relate to weighted elastomers. The weighted elastomers may comprise an elastomer and a weighting agent attached to an outer surface of the elastomer. An embodiment includes a method of cementing that comprises providing a cement composition containing cement, water, and a weighted elastomer. In addition, the cement composition may be introduced into a subterranean formation and allowed to set therein.Type: GrantFiled: July 29, 2009Date of Patent: January 7, 2014Assignee: Halliburton Energy Services, Inc.Inventors: Craig W. Roddy, Jeffery D. Karcher, Rickey L. Morgan
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Publication number: 20130319294Abstract: The use of a binder system comprising compounds containing aluminium oxide and silicon oxide for producing a hydrophilic building product, characterized in that the sum of the oxides calculated as Al2O3 and SiO2 in the binder system is ?40% by weight, based on the water-free binder system, and the contact angle of an oil drop placed on the surface of the cured building product is ?90°, where the contact angle determination is carried out under water, is proposed. The said hydrophilicity makes the building product easy to clean, with simple rinsing with water often being sufficient.Type: ApplicationFiled: August 11, 2011Publication date: December 5, 2013Applicant: CONSTRUCTION RESEARCH & TECHNOLOGY GmbHInventors: Uwe Gehrig, Florian Ellenrieder, Michael Melchart, Joachim Riedmiller, Steffen Wache, Mathias Degenkolb, Michael Kutschera, Katja Voland
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Patent number: 8574359Abstract: The invention relates to a sulfo-aluminous clinker with optimal setting time and short term compressive strengths, comprising a mixture of the following phases: —calcium sulfoaluminate, or C4A3$, in amounts higher than 50% by weight of the mixture, —belite, or C25, in amounts between 2 and 23%, —3C25 3C$ CaX2, X being fluorine or chlorine, between 3 and 15% —C11A7CaX2, X being fluorine or chlorine, between 2 and 12%, both fluorine and chlorine being altogether present in the mixture, and phase C5S2$ being absent. The invention also relates to a method for preparing this sulfo-aluminous clinker, and hydraulic binders comprising this clinker.Type: GrantFiled: November 15, 2011Date of Patent: November 5, 2013Assignee: ItalcementiInventors: Maurizio Iler Marchi, Stefano Allevi
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Patent number: 8551245Abstract: Hydraulic cements, such as Portland cements and other cements that include substantial quantities of tricalcium silicate (C3S), dicalcium silicate (C2S), tricalcium aluminate (C3A), and/or tetracalcalcium alumino-ferrite (C4AF), are particle size optimized to have increased reactivity compared to cements of similar chemistry and/or decreased water demand compared to cements of similar fineness. Increasing hydraulic cement reactivity increases early strength development and release of reactive calcium hydroxide, both of which enhance SCM replacement and 1-28 day strengths compared to blends of conventional Portland cement and one or more SCMs, such as coal ash, slag or natural pozzolan. Decreasing the water demand can improve strength by decreasing the water-to-cement ratio for a given workability. The narrow PSD cements are well suited for making blended cements, including binary, ternary and quaternary blends.Type: GrantFiled: March 13, 2013Date of Patent: October 8, 2013Assignee: Roman Cement LLCInventors: John M. Guynn, Andrew S. Hansen
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Publication number: 20130255542Abstract: Provided herein are systems, methods, and compositions related to mixtures of calcium aluminate cements with compositions comprising carbonate. The compositions comprising carbonates may be formed by sequestering carbon dioxide.Type: ApplicationFiled: September 27, 2012Publication date: October 3, 2013Applicant: CALERA CORPORATIONInventors: Laurence Clodic, Samuel O. Morgan, Irvin Chen
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Publication number: 20130233207Abstract: The invention relates to a sulfo-aluminous clinker with optimal setting time and short term compressive strengths, comprising a mixture of the following phases: calcium sulfoaluminate, or C4A3$, in amounts higher than 50% by weight of the mixture, belite, or C2S, in amounts between 2 and 23%, 3C2S 3C$ CaX2, X being fluorine or chlorine, between 3 and 15% C11A7CaX2, X being fluorine or chlorine, between 2 and 12%, both fluorine and chlorine being altogether present in the mixture, and phase C5S2$ being absent. The invention also relates to a method for preparing this sulfo-aluminous clinker, and hydraulic binders comprising this clinker.Type: ApplicationFiled: November 15, 2011Publication date: September 12, 2013Inventors: Maurizio Iler Marchi, Stefano Allevi
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Patent number: 8523998Abstract: A process for producing a geopolymer includes combusting at least one of oil shale and mineral residues originating from a production of oil using the oil shale so as to produce a combustion product. The combustion product is ground. An alkaline activator is added to the combustion product to form a geopolymer mixture. Water is added to the geopolymer mixture. The geopolymer mixture is adjusted so as to obtain a mol ratio of Si:Al of 2 to 5, a mol ratio of K:Al of 0.6 to 0.7, a mol ratio of Si:K of 3 to 10, a mol ratio of Ca:Al of 0.1 to 0.4, and a mol ratio of Si:CA of 4.9 to 41. The geopolymer mixture is hardened.Type: GrantFiled: November 9, 2010Date of Patent: September 3, 2013Assignee: Outotec OyjInventors: Edgar Gasafi, Katja Dombrowski-Daube
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Publication number: 20130220181Abstract: Microparticles having crystalline needle or rod-shaped structures of, for example, an ettringite mineral grown and attached radially from their surface. A method including nucleating and growing crystalline needles/rods from the surface of a particle in the presence of a solution of calcium, sulfur, and aluminum such as calcium sulfoaluminate, lime and calcium sulfate is described. One example is the radial growth of ettringite needles on the surface of fly ash particles in calcium sulfoaluminate-based cement paste and concrete.Type: ApplicationFiled: February 29, 2012Publication date: August 29, 2013Applicant: MACAEL, INC.Inventors: Eric P. Bescher, Jacob W. Stremfel, Grant M. Kao, John T. Salkowski, Walter J. Hoyle, John Kenneth Vallens, Edward K. Rice
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Publication number: 20130192493Abstract: Hydraulic cements, such as Portland cements and other cements that include substantial quantities of tricalcium silicate (C3S), dicalcium silicate (C2S), tricalcium aluminate (C3A), and/or tetracalcalcium alumino-ferrite (C4AF), are particle size optimized to have increased reactivity compared to cements of similar chemistry and/or decreased water demand compared to cements of similar fineness. Increasing hydraulic cement reactivity increases early strength development and release of reactive calcium hydroxide, both of which enhance SCM replacement and 1-28 day strengths compared to blends of conventional Portland cement and one or more SCMs, such as coal ash, slag or natural pozzolan. Decreasing the water demand can improve strength by decreasing the water-to-cement ratio for a given workability. The narrow PSD cements are well suited for making blended cements, including binary, ternary and quaternary blends.Type: ApplicationFiled: March 13, 2013Publication date: August 1, 2013Applicant: ROMAN CEMENT LLCInventor: Roman Cement LLC
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Patent number: 8476203Abstract: Methods and compositions that comprise sub-micron alumina for accelerating setting of a cement composition. An embodiment includes a method of cementing in a subterranean formation. The method may comprise introducing a cement composition into the subterranean formation, wherein the cement composition comprises hydraulic cement, sub-micron alumina, and water. The method further may comprise allowing the cement composition to set in the subterranean formation. Another embodiment includes a cement composition that may comprise hydraulic cement, sub-micron alumina, and water.Type: GrantFiled: January 4, 2010Date of Patent: July 2, 2013Assignee: Halliburton Energy Services, Inc.Inventors: Rahul Chandrakant Patil, B. Raghava Reddy, Abhimanyu Deshpande, Christopher L. Gordon, Craig W. Roddy, Jiten Chatterji, Roger S. Cromwell
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Patent number: 8470088Abstract: A low-water-content castable composition produces cast products with an increased modulus of rupture, an increased cold crushing strength, and decreased porosity. The composition employs closed fractions of constituent particles with specified populations and specified gaps in the particle size distribution to produce these properties. The composition is suitable for refractory applications.Type: GrantFiled: August 28, 2008Date of Patent: June 25, 2013Assignee: Vesuvivs Crucible CompanyInventor: Justin Teiken
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Calcium aluminate clinker as a refractory aggregate with and without barium addition and use thereof
Patent number: 8465585Abstract: 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: GrantFiled: January 25, 2012Date of Patent: June 18, 2013Assignee: Westmoreland Advanced Materials, Inc.Inventor: Kenneth A. McGowan -
Publication number: 20130133555Abstract: Inorganic polymer compositions and methods for their preparation are described herein. The compositions include the reaction product of a reactive powder, an activator, and optionally a retardant. The reactive powder includes fly ash and a tricalcium aluminate additive. In some examples, the reactive powder comprises less than 5% by weight portland cement. The tricalcium aluminate is present in an amount of 0.5% or greater by weight of the reactive powder. Also described herein are building materials including the compositions.Type: ApplicationFiled: November 30, 2011Publication date: May 30, 2013Applicant: Boral Material Technologies Inc.Inventors: Redmond Richard Lloyd, Louise Margaret Keyte, Russell L. Hill, Zhaozhou Zhang, Mark Hollett, Li Ai
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Patent number: 8450391Abstract: Methods and compositions are provided that relate to weighted elastomers. The weighted elastomers may comprise an elastomer and a weighting agent attached to an outer surface of the elastomer. An embodiment includes a method of cementing that comprises providing a cement composition containing cement, water, and a weighted elastomer. In addition, the cement composition may be introduced into a subterranean formation and allowed to set therein.Type: GrantFiled: June 23, 2010Date of Patent: May 28, 2013Assignee: Halliburton Energy Services, Inc.Inventors: Craig W. Roddy, Jeffery D. Karcher, Rickey L. Morgan, D. Chad Brenneis
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Publication number: 20130098271Abstract: A dry mortar mixture based on at least one hydraulic and/or latently hydraulic binder which in the made-up and not yet cured state has firm properties is claimed. The novel dry mortar mixture is characterized in that it contains at least one representative of a dispersant and at least one compound having superabsorbent properties. This mixture makes it possible to carry over the advantages of known tile adhesives for horizontal application to vertical application possibilities.Type: ApplicationFiled: October 28, 2010Publication date: April 25, 2013Inventors: Michael Eberwein, Christian Trieflinger, Michael Schinabeck, Jutta Karin Langlotz, Stefan Friedrich, Gregor Herth
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Patent number: 8425679Abstract: It is the object of the invention to provide a cement admixture, and a cement composition that can impart good enough rustproofness to reinforcing bars in hardened cement concrete, and can have resistance to penetration of chloride ions entering from the outside, prevent the hardened cement concrete from getting porous due to reduced leaching of Ca ions and have a self-recovery capability. The invention provides a cement admixture characterized by containing a calcium ferroaluminate compound comprising a CaO—Al2O3—Fe2O3 system, and having a Fe2O3 content of 0.5 to 15% by mass and a CaO.2Al2O3 structure with a CaO/Al2O3 molar ratio ranging from 0.15 to 0.7.Type: GrantFiled: November 25, 2010Date of Patent: April 23, 2013Assignee: Denki Kagaku Kogyo Kabushiki KaishaInventors: Taiichiro Mori, Kazuto Tabara, Kenji Yamamoto, Minoru Morioka, Takayuki Higuchi
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Publication number: 20130092054Abstract: A method of making Portland cement, white cement, calcium aluminates, calcium aluminum silicates and similar oxides using solid state combustion synthesis is described. The method uses less energy and produces lower CO2 emissions than conventional processes. The method uses green fuels like biomass and lignin and eliminates most of the coal used in traditional cement production. A batch reactor and a semi-continuous reactor that can be used for the combustion synthesis are also described.Type: ApplicationFiled: October 17, 2011Publication date: April 18, 2013Applicant: SRIYA GREEN MATERIALS, INC.Inventor: Srinivas KILAMBI
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Patent number: 8414700Abstract: Hydraulic cements, such as Portland cements and other cements that include substantial quantities of tricalcium silicate (C3S), dicalcium silicate (C2S), tricalcium aluminate (C3A), and/or tetracalcalcium alumino-ferrite (C4AF), are particle size optimized to have increased reactivity compared to cements of similar chemistry and/or decreased water demand compared to cements of similar fineness. Increasing hydraulic cement reactivity increases early strength development and release of reactive calcium hydroxide, both of which enhance SCM replacement and 1-28 day strengths compared to blends of conventional Portland cement and one or more SCMs, such as coal ash, slag or natural pozzolan. Decreasing the water demand can improve strength by decreasing the water-to-cement ratio for a given workability. The narrow PSD cements are well suited for making blended cements, including binary, ternary and quaternary blends.Type: GrantFiled: July 14, 2011Date of Patent: April 9, 2013Assignee: Roman Cement, LLCInventors: John M. Guynn, Andrew S. Hansen
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Publication number: 20130081773Abstract: The present disclosure relates to a titanium-containing article casting mold composition comprising calcium aluminate and an X-ray or Neutron-ray detectable element. Furthermore, present embodiments teach a method for detecting sub-surface ceramic inclusions in a titanium or titanium alloy casting by combining calcium aluminate, an element more radiographically dense than the calcium aluminate, and a liquid to form a slurry; forming a mold having the calcium aluminate and the radiographically dense element from the slurry; introducing a titanium aluminide-containing metal to the radiographically dense element-bearing mold; solidifying said titanium aluminide-containing metal to form an article in the mold; removing the solidified titanium aluminide-containing metal article from said mold; subjecting the solidified titanium aluminide-containing article to radiographic inspection to provide a radiograph; and examining said radiograph for the presence of the radiographically dense element on or in the article.Type: ApplicationFiled: September 30, 2011Publication date: April 4, 2013Applicant: General Electric CompanyInventors: Bernard Patrick BEWLAY, Michael WEIMER, Joan McKIEVER, Brian ELLIS
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Patent number: 8409344Abstract: Cement compositions and methods for making cement compositions are provided. The cement compositions can comprise at least one oxide having a particle size of less than about 600 nm. The methods for making cement may include: providing a mixture of compounds containing the required calcium, silicon, aluminum, and iron to provide at least one of tricalcium silicate, dicalcium silicate, tricalcium aluminate, tetracalcium aluminoferrite, other calcium silicates, aluminates, ferrites, and silicates or combinations thereof; adding a fuel source and an oxidizer to the mixture of compounds; and heating the mixture of compounds, the fuel source, and the oxidizer such that the mixture of compounds, the fuel source, and the oxidizer ignite to form the at least one tricalcium silicate, dicalcium silicate, tricalcium aluminate, and tetracalcium aluminoferrite, or combinations thereof.Type: GrantFiled: February 26, 2008Date of Patent: April 2, 2013Assignee: MetaMateria Technologies LLCInventors: Richard J. Schorr, Suvankar Sengupta, Richard L. Helferich, Gary M. Gordon, Debabrata Rautaray
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Publication number: 20130043026Abstract: Resilient graphitic carbon may be an effective lost-circulation control agent for well-cementing compositions. During primary or remedial cementing, the carbon particles may hinder or prevent the egress of the well-cementing composition from the wellbore into subterranean formations via formation fissures or cracks. The carbon particles may also be added to spacer fluids, chemical washes or both.Type: ApplicationFiled: August 15, 2011Publication date: February 21, 2013Applicant: SCHLUMBERGER TECHNOLOGY CORPORATIONInventors: Salim Taoutaou, Shameed Ashraf, Khalid Abdel Hadi
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Patent number: 8377201Abstract: Hydraulic cements, such as Portland cements and other cements that include substantial quantities of tricalcium silicate (C3S), dicalcium silicate (C2S), tricalcium aluminate (C3A), and/or tetracalcalcium alumino-ferrite (C4AF), are particle size optimized to have increased reactivity compared to cements of similar chemistry and/or decreased water demand compared to cements of similar fineness. Increasing hydraulic cement reactivity increases early strength development and release of reactive calcium hydroxide, both of which enhance SCM replacement and 1-28 day strengths compared to blends of conventional Portland cement and one or more SCMs, such as coal ash, slag or natural pozzolan. Decreasing the water demand can improve strength by decreasing the water-to-cement ratio for a given workability. The narrow PSD cements are well suited for making blended cements, including binary, ternary and quaternary blends.Type: GrantFiled: December 8, 2011Date of Patent: February 19, 2013Assignee: Roman Cement, LLCInventors: John M. Guynn, Andrew S. Hansen
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Patent number: 8377195Abstract: A wearing compound slurry comprising an inorganic binder, ceramic particles, ceramic powder, diluent and optionally filler and discontinuous fibers. The slurry is applied to a wearable surface and exposed to heat to remove diluent and cure the wearing compound into a hard layer. The cured wearing compound layer remains intact after exposure to extremely high temperatures.Type: GrantFiled: September 12, 2011Date of Patent: February 19, 2013Assignee: Henkel CorporationInventors: Prakash S. Patel, Shabbir Attarwala
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Patent number: 8317915Abstract: A composition includes at least, in % expressed by mass relative to the total mass of the composition, from 0.01 to 3% of polycarboxylic acid or salts thereof, the polycarboxylic acid including 2 to 4 carboxyl groups per molecule; and from 97 to 99.99% of a Belite-Calcium-Sulphoaluminate-Ferrite clinker (BCSAF clinker).Type: GrantFiled: July 20, 2010Date of Patent: November 27, 2012Assignee: LafargeInventors: Gunther Walenta, Ellis Gartner, Vincent Morin
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Patent number: 8309483Abstract: A binder for monolithic refractories characterized by containing ingredients comprised of a chemical composition of at least one of CaxSr1-xAl2O4, and CaySr1-yAl4O7 or these plus 12(CaO)z(SrO)1-z.7Al2O3 (where, 0<x<1, 0<y<1, and 0<z<1) and a binder for monolithic refractories and monolithic refractories superior in erosion resistance to slag or molten iron by monolithic refractories comprised of this binder and refractory aggregates are provided.Type: GrantFiled: October 27, 2008Date of Patent: November 13, 2012Assignees: Nippon Steel Corporation, Denki Kagaku Kogyo Kabushiki KaishaInventors: Yoshitoshi Saito, Atsunori Koyama
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Publication number: 20120255462Abstract: The present invention relates to the production of geopolymers from oil shale and/or mineral residues, which originate from the production of oil by means of oil shale. To use the residues left in the combustion of oil shale for the production of geopolymers, the oil shale and/or also mineral residues, which originate from the production of oil by means of shale are burnt and subsequently ground, before they are mixed with an alkaline activator and water and cured.Type: ApplicationFiled: November 9, 2010Publication date: October 11, 2012Applicant: OUTOTEC OYJInventors: Edgar Gasafi, Katja Dombrowski-Daube
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Patent number: 8273674Abstract: A refractory self-flow filler mortar, includes in mass % with relation to the basic refractory material, at least 1% and at most 10% of non-granulated spherical particles with median size greater than 0.1 ?m and less than or equal to 2 mm and further includes in mass % with relation to the total dry mass of the mortar, less than 4.5% of silica (SiO2) and between 1% and 8% water, the standard deviation of the non-granulated spherical particle size being less than 100%.Type: GrantFiled: December 15, 2006Date of Patent: September 25, 2012Assignee: Saint-Gobain Centre de Recherches et d'Etudes EuropeanInventors: Thibault Champion, Christian Claude His, Franceline Marguerite Louise Villermaux
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Patent number: 8268071Abstract: The invention relates to a novel sulfoaluminous clinker, to a method for preparing said clinker, and to the use of said clinker for preparing a hydraulic binder and subsequently grout, concrete, or mortar.Type: GrantFiled: January 28, 2010Date of Patent: September 18, 2012Assignee: VICATInventors: Michel Pasquier, Laury Barnes-Davin, Guy Beauvent
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Publication number: 20120216720Abstract: Methods for preventing, reducing, or eliminating construction heave, expansion, distresses, and damage primarily caused by the formation of ettringite are disclosed including introducing fluoride ion releasing agent/salt(s), such as sodium fluoride, calcium fluoride, and potassium fluoride, to expansive soil layers or concrete structural elements and allowing the fluoride ion releasing agent/salt(s) at ambient temperature to react with formed ettringite and to prevent the formation of ettringite of the expansive soil layers or concrete structural elements. Other embodiments are described and claimed.Type: ApplicationFiled: May 10, 2012Publication date: August 30, 2012Applicant: AMERICAN ACCUTECH LTD. CO.Inventors: Yun Deng, Lianxiang Du
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Publication number: 20120204764Abstract: A wellbore servicing method comprises converting a water into an electrochemically activated water, preparing a wellbore servicing composition comprising the electrochemically activated water, and placing the wellbore servicing composition in a wellbore. Also, cement composition comprises a cement and an electrochemically activated water.Type: ApplicationFiled: April 24, 2012Publication date: August 16, 2012Applicant: HALLIBURTON ENERGY SERVICES, INC.Inventors: Jim Weaver, Mark Savery, Billy Slabaugh, Roger Cromwell
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Patent number: 8226762Abstract: The self-leveling fluid screed cement composition with limited shrinkage, formed by a mixture of a cement binder, a fluidizing adjuvant, granulates and water, is characterized in that the binder includes 70% to 85% by weight of Portland cement, 7% to 18% by weight of sulfo-aluminous clinker, and 6% to 14% by weight of calcium sulfate, with a calcium sulfate C$/calcium sulfo-aluminate C4A3$ molar ratio of between 5 and 7 and a water/binder ratio by weight of between 0.60 and 0.90. The self-leveling fluid screed that is thus produced has a mechanical resistance to its compression at 24 hours that is at least equal to 1 MPa, shrinkage at 7 days, measured under a relative hygrometry of 50%, less than 500 ?m/m, and an endogenic expansion value that is measured at 7 days, less than 1,000 ?m/m, as well as a very slight lifting of edges.Type: GrantFiled: March 18, 2010Date of Patent: July 24, 2012Assignee: Ciments FrancaisInventors: Bruno Le Rolland, Andre Roux, Sylvia Vespasien
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Publication number: 20120160131Abstract: Cement compositions containing biowaste ash and methods of cementing in subterranean formations using such cement compositions. Examples of suitable biowaste ash include agricultural waste ash, municipal waste ash, waste-water treatment waste ash, animal waste ash, non-human-non-animal industrial waste ash, and combinations thereof.Type: ApplicationFiled: March 12, 2012Publication date: June 28, 2012Applicant: Halliburton Energy Services, Inc.Inventor: Craig W. Roddy
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Publication number: 20120152152Abstract: A low-calcium-cementitious material having a calcium oxide content less than or equal to 10 wt % which is processed at room temperature into a low calcium cement mainly composed of mullite and a method manufacturing of the low calcium cement are provided. The low-calcium-cementitious material includes low calcium fly ash, an alkaline agent, and a congealing agent, wherein the calcium oxide content of the low-calcium-cementitious material is less than or equal to 10 wt %. The low calcium fly ash has a calcium oxide content less than or equal to 10 wt %. The low calcium cement manufacturing method includes providing a low calcium fly ash having a calcium oxide content less than or equal to 10 wt %; providing an alkaline agent; providing a congealing agent; and mixing the low-calcium-content fly ash, the alkaline agent, and the congealing agent and standing the mixture at room temperature to form a low calcium cement.Type: ApplicationFiled: June 17, 2011Publication date: June 21, 2012Applicant: Ruentex Engineering & Construction Co., LTD.Inventors: Samuel Yin, Ching-Ting Yang, Yuan-Kai Li
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Patent number: 8177903Abstract: The present invention relates to a composition including at least a Portland clinker and a Belite-Calcium-Sulphoaluminate-Ferrite clinker (BCSAF).Type: GrantFiled: December 18, 2009Date of Patent: May 15, 2012Assignee: LafargeInventors: Günther Walenta, Cédric Comparet, Vincent Morin, Ellis Gartner
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Publication number: 20120085263Abstract: Hydraulic cements, such as Portland cements and other cements that include substantial quantities of tricalcium silicate (C3S), dicalcium silicate (C2S), tricalcium aluminate (C3A), and/or tetracalcalcium alumino-ferrite (C4AF), are particle size optimized to have increased reactivity compared to cements of similar chemistry and/or decreased water demand compared to cements of similar fineness. Increasing hydraulic cement reactivity increases early strength development and release of reactive calcium hydroxide, both of which enhance SCM replacement and 1-28 day strengths compared to blends of conventional Portland cement and one or more SCMs, such as coal ash, slag or natural pozzolan. Decreasing the water demand can improve strength by decreasing the water-to-cement ratio for a given workability. The narrow PSD cements are well suited for making blended cements, including binary, ternary and quaternary blends.Type: ApplicationFiled: December 8, 2011Publication date: April 12, 2012Applicant: Roman Cement, LLCInventors: John M. Guynn, Andrew S. Hansen
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Patent number: 8147993Abstract: The present invention provides a ceramic porous body for in-vitro and in-vivo use comprising a composition comprising a calcium aluminate (CA) containing phase and optionally at least one of an accelerator, a retarder, a surfactant, a foaming agent, a reactive alumina, water, a fiber, and a biologically active material, and combinations thereof. Ceramic compositions are provides as well as method of using the ceramic compositions and methods of manufacturing a ceramic porous body. The ceramic porous bodies of this invention may be used as artificial bones, joints, in-vitro support structures, and in-vivo support structures for cells, tissues, organs, and nerve growth and regeneration.Type: GrantFiled: May 29, 2007Date of Patent: April 3, 2012Assignee: Cabertech, Inc.Inventor: Kenneth A. McGowan
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Patent number: 8123854Abstract: A method of treating marine or river dredging sediments, especially harbour zone sediments, whose free water content is between 40% and 80% by weight, for the purpose of obtaining a solid material which is easy to handle, includes the following successive steps: mixing the sediments with a treatment composition including a sulphoaluminate binder and at least one other component selected from a sulphate source and a catalyst of the hydration reactions of the sulphoaluminate binder; a step of setting of the mixture, leading to a compact mixture having a free water content of less than 20% by weight; then fractionating the compact mixture. The sediment thus treated may be incorporated into concrete or mortar formulas, which then have leachable fractions of less than 1% by weight.Type: GrantFiled: September 29, 2009Date of Patent: February 28, 2012Assignee: Ciments FrancaisInventors: Pierre Cassat, Emmanuel Moudilou, Bruno le Rolland
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Calcium aluminate clinker as a refractory aggregate with and without barium addition and use thereof
Patent number: 8123853Abstract: 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. 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: GrantFiled: September 27, 2010Date of Patent: February 28, 2012Assignee: Westmoreland Advanced Materials, Inc.Inventor: Kenneth A. McGowan -
Patent number: 8105433Abstract: It is an object of the invention to provide a cement admixture that can form concrete having a sufficient self-healing capability and satisfactorily maintaining its self-healing capability for prolonged periods. The cement admixture of the invention contains an expanding material and an alumina-silicate with swelling properties. The cement admixture is combined with cement to form a cement composition. The cement composition is mixed with water and an aggregate to provide concrete with an excellent self-healing capability.Type: GrantFiled: February 13, 2009Date of Patent: January 31, 2012Assignees: The University of Tokyo, National University Corporation Yokohama National University, East Japan Railway CompanyInventors: Toshiharu Kishi, Tae-Ho Ahn, Akira Hosoda, Kaoru Kobayashi
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Patent number: 8092593Abstract: Compositions for fabricating architectural works wherein the compositions utilize one or more cement materials, additives, fibers and recycled glass. Exemplary cement materials include Portland cement, calcium aluminate, fly ash and/or E glass. Exemplary additives include boric acid, citric acid, lithium, plasticizer and/or methylcellulose ethers. Exemplary fibers include polyvinyl alcohol (PVA) and/or micro-fibers. Crushed recycled glass is used as an aggregate or non-reactive material. Other ingredients may be used including: sodium hydroxide, potassium hydroxide and hydrated lime to alter the PH; ferrous sulfate, mono-potassium phosphate, or manganese carbonate and magnesium sulfate as color enhancements; and/or pozzolans (Vcas) to neutralize the ASR efflorescence.Type: GrantFiled: June 17, 2010Date of Patent: January 10, 2012Inventor: Melvin Scott McCombs
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Publication number: 20110308431Abstract: The invention relates to a novel sulfoaluminous clinker, to a method for preparing said clinker, and to the use of said clinker for preparing a hydraulic binder and subsequently grout, concrete, or mortar.Type: ApplicationFiled: January 28, 2010Publication date: December 22, 2011Applicant: VicatInventors: Michel Pasquier, Laury Barnes-Davin, Guy Beauvent
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Publication number: 20110297047Abstract: A calcium sulfoaluminate-based concrete with a permeability of less than 1000 Coulombs. Rapid-setting low chloride-ion permeability calcium sulfoaluminate (CSA) cements and concretes include CSA and a suitable polymer such as a sol-gel derived, organic-inorganic, silica based hybrid coating solutions of polystyrene-butylacrylate polymers containing active silanol groups protected by hydroxyl groups containing polyalcohol, or other polymers. Such polymers may be added as powders or as liquid in the finish mill. Other rapid-setting low chloride-ion permeability (CSA) cements and concretes include CSA with selected particle size distributions, and do not require use of any polymer. These CSA cements and concretes have low chloride-ion permeability, high early strength, fast setting times, low-shrinkage, and high freeze-thaw resistance.Type: ApplicationFiled: May 6, 2011Publication date: December 8, 2011Inventors: Edward K. Rice, Grant M. Kao, Eric P. Bescher
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Publication number: 20110290493Abstract: Disclosed are compositions and methods for providing fluid-loss control in subterranean wells. Well-completion fluids contain fine particulate additives whose glass-transition temperatures are below the anticipated bottomhole temperature. The particles soften upon injection into the well, whereupon they soften and become deformable. The particles then migrate to the borehole wall and form a seal that reduces further fluid flow from the borehole into the formation. The additive may be supplied as a powder or in the form of a liquid suspension.Type: ApplicationFiled: December 3, 2009Publication date: December 1, 2011Applicant: SCHLUMBERGER TECHNOLOGY CORPORATIONInventor: Simon James