Soil, Diatomaceous Earth, Clay, Shale, Slate, Or Rock-type Material Containing Or Material For Treating Soil Or Earth (e.g., Soil Stabilization, Etc.) Patents (Class 106/694)
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Patent number: 7150786Abstract: Clinkered materials containing high concentrations of {(C,K,N,M)4(A,F,Mn,P,T,S)3(cl,{overscore (S)})} (crystal X), and {(C2S)3(C{overscore (S)})3 Ca(f,cl) 2} or {(C2S)3(C{overscore (S)})3Ca(f,cl)2} (crystal Y), and/or {C5S2{overscore (S)}) (crystal Z) directly from the kiln, rapidly hardening ultra-high early strength cement including these clinkered materials, methods for forming and using said compositions and the cements so produced are claimed. The methods include the steps of forming a mixture of raw material containing CaO, MgO, Al2O3, Fe2O3, TiO2, Mn2O3, SiO2, SO3, Na2O, K2O, P2O5 and F, respectively designated C, M, A, F, T, Mn, S, {overscore (S)}, N, K, P and f, and heating said mixture to an elevated temperature between 900° C. and 1,200° C.; before determining average amount of crystals X, Y, and Z.Type: GrantFiled: July 6, 2004Date of Patent: December 19, 2006Assignee: Ultimax CorporationInventor: Hassan Kunbargi
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Patent number: 7070647Abstract: A novel cement is alkalescent, capable of solidifying a wide range of soil and applicable to biological environment. The cement composition contains 100 parts by weight of magnesium oxide, 5 to 25% by weight of at least one of silicic acid, alumina and iron oxide, 3 to 35 parts by weight of a phosphate, 2 to 30 parts by weight of gypsum and 0.005 to 7 parts by weight of a hydroxycarboxylic acid or a ketocarboxylic acid.Type: GrantFiled: February 21, 2001Date of Patent: July 4, 2006Assignee: National Institute for Rural EngineeringInventors: Shinsaku Fujimori, Shigeji Kobori
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Patent number: 6989057Abstract: A method and cement composition is provided for sealing a subterranean zone penetrated by a well bore, wherein the cement composition comprises zeolite, cementitious material, and water sufficient to form a slurry.Type: GrantFiled: December 10, 2002Date of Patent: January 24, 2006Assignee: Halliburton Energy Services, Inc.Inventors: Donald A. Getzlaf, Karen Luke, Keith A. Rispler, Russell M. Fitzgerald, Glen C. Fyten
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Patent number: 6960253Abstract: Dry mixes for hydraulic cement coatings for masonry, above ground concrete structures and below ground concrete structures. Hydraulic cement, sand and particular aggregates are combined to form the dry mix, which is combined with a controlled quantity of a water base emulsion binder and water to form the hydraulic cement coating. The water base emulsion binder may be replaced with a redispersible polymer binder and a quantity of water.Type: GrantFiled: October 30, 2003Date of Patent: November 1, 2005Assignee: Kretekote, LLCInventor: Clifford J. Radtke, Jr.
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Patent number: 6923857Abstract: A non-efflorescing cementitious body is formed from sources of calcium aluminate, calcium silicate, calcium sulphate and reactive silica, these ingredients being present in such relative proportions that, upon hydration, both monosulphate (C3A.C?.12H) and hydrated alumina (AH3) are formed. Also disclosed is a hydraulic binder and a paste from which such bodies can be formed and a method for forming such bodies. In addition to exhibiting low efflorescence, these bodies retain satisfactory physical properties, especially good durability to natural weathering conditions.Type: GrantFiled: March 26, 2001Date of Patent: August 2, 2005Assignee: Lafarge AluminatesInventors: Anastasia George Constantinou, Colin Dow, Charles Hubert Fentiman, Mary Ruth Hoy, Karen Louise Scrivener
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Patent number: 6881257Abstract: A machinable light weight sisal-based concrete structural building material and a method of making the same are disclosed. The material includes short sisal fibers in a range from about 22% (v/v) to about 33% (v/v); a cement in a range from about 12% (v/v) to about 22% (v/v); and perlite in a range from about 51% (v/v) to about 59% (v/v). The method includes the steps of mixing an amount of cement with an amount of perlite to form a solid mixture; adding water and mixing water with the solid mixture to form a sludge; adding an amount of sisal fibers and mixing the sisal fibers into the sludge to form an uniform final composition; and pouring the final composition into a mold and setting the final composition to a solid form structural building material. The produced structural building material can be machined, screwed, cut, and nailed.Type: GrantFiled: July 10, 2003Date of Patent: April 19, 2005Inventor: Seymour Beauboeuf
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Publication number: 20040211564Abstract: The present invention provides cement compositions with improved corrosion resistance, and methods of using the compositions in a subterranean formation. The cement composition comprises a high alumina cement, vitrified shale, a soluble phosphate, and water sufficient to form a slurry. Optionally, other additives may be included, such as accelerants, retardants, dispersants, and the like.Type: ApplicationFiled: April 24, 2003Publication date: October 28, 2004Inventors: Lance E. Brothers, William J. Caveny
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Publication number: 20040211562Abstract: The present invention relates to subterranean well cementing operations, and more particularly, to cement compositions having improved corrosion resistance and methods of using such compositions in subterranean formations. The cement compositions generally include an unhydrated cement that includes a high alumina cement, a silica source, and a soluble phosphate; and a set retarder that includes a water soluble carboxylic acid. Optionally, other additives may be included, such as accelerants, dispersants, weighting agents, and the like.Type: ApplicationFiled: February 9, 2004Publication date: October 28, 2004Inventors: Lance E. Brothers, Anthony V. Palmer, William J. Caveny
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Patent number: 6758896Abstract: Clinkered materials containing high concentrations of {(C,K,N,M)4 (A,F,Mn,P,T,S)3 Cl,{overscore (S)})}(crystal X), and {C2S)3(C{overscore (S)})3Ca(f,Cl)2} or C9S3{overscore (S)}3Ca(f,cl)2 crystal Y), and/or {C5S2{overscore (S)}) (crystal Z) directly from the kiln, rapidly hardening ultra-high early strength cement including these clinkered materials, methods for forming and using said compositions and the cements so produced are claimed. The methods include the steps of forming a mixture of raw material containing CaO, MgO, Al2O3, Fe2O3, TiO2, Mn2O5, SiO2, SO3, Na2O, K2O, P2O5 and F, respectively designated C, M, A, F, T, Mn, S, {overscore (S)}, N, K, P and f, and heating said mixture to an elevated temperature between 900° C. and 1,200° C.; before determining average amount of crystals X, Y, and Z.Type: GrantFiled: July 18, 2001Date of Patent: July 6, 2004Inventor: Hassan Kunbargi
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Publication number: 20040107877Abstract: A method and cement composition is provided for sealing a subterranean zone penetrated by a well bore, wherein the cement composition comprises zeolite, cementitious material, and water sufficient to form a slurry.Type: ApplicationFiled: December 10, 2002Publication date: June 10, 2004Applicant: Halliburton Energy Services, Inc.Inventors: Donald A. Getzlaf, Karen Luke, Keith A. Rispler, Russell M. Fitzgerald, Glen C. Fyten
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Patent number: 6739806Abstract: The present invention provides cement compositions comprising an improved fluid loss control additive, and methods for cementing in a subterranean formation using such cement compositions. The cement compositions comprise a hydraulic cement, water, and a fluid loss control additive comprising at least two polymers connected by a pH-sensitive crosslink. Optionally, other ingredients may be included in the compositions.Type: GrantFiled: June 13, 2003Date of Patent: May 25, 2004Assignee: Halliburton Energy Services, Inc.Inventors: Michael J. Szymanski, Larry S. Eoff, John Michael Wilson, Samuel J. Lewis
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Publication number: 20040025752Abstract: A chemically-bonded cement material and concrete which includes a calcium aluminate component, a calcium silicate component, a sodium phosphate compound, and bottom ash which chemically reacts with the sodium phosphate compound to produce calcium phosphates. The chemically bonded cement may include a polymeric compound, such as acrylic-styrene copolymer, and fibrous materials, such as E-glass fibers, carbon fibers, or polypropylene. The concrete includes the chemically-bonded cement and aggregates. The materials are well suited as rapid setting repair patching and fill for damaged roads, remediating material for contaminated soil and as backfill underlayment, and as high strength precast concrete products.Type: ApplicationFiled: June 26, 2003Publication date: February 12, 2004Inventor: Toshifumi Sugama
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Publication number: 20040007163Abstract: The present invention provides methods, lightweight well cement compositions and additives for the well cement compositions. The methods of the invention for sealing pipe in a well bore penetrating a zone or formation which readily fractures at low hydrostatic pressure is basically comprised of the steps of providing a lightweight cement composition comprised of a hydraulic cement, water and an additive comprising an aqueous suspension of microspheres containing a water swellable clay suspending agent, placing the cement composition in the annulus between the pipe and the well bore and allowing the cement composition to set.Type: ApplicationFiled: June 25, 2003Publication date: January 15, 2004Inventors: Lance E. Brothers, Krista L. Keener, James A. Braden, Jan Pieter Vijn, Bach Dao
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Patent number: 6641660Abstract: The present invention provides stable well cementing methods and compositions for sealing subterranean zones penetrated by well bores. The improved thermally stable and degradation resistant well cement compositions are basically comprised of a hydraulic cement, sufficient water to form a pumpable slurry, an aqueous hydrogenated styrene-butadiene rubber latex and a latex stabilizer present in an amount sufficient to stabilize the hydrogenated styrene-butadiene latex.Type: GrantFiled: November 13, 2002Date of Patent: November 4, 2003Assignee: Halliburton Energy Services, Inc.Inventors: Jiten Chatterji, Roger S. Cromwell, Bobby J. King, Darrel C. Brenneis, Ronald J. Crook
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Publication number: 20030121661Abstract: Methods and compositions for sealing subterranean zones penetrated by well bores are provided. The methods basically comprise the steps of introducing a sealing composition into the subterranean zone comprised of a hydraulic cement, sufficient water to form a slurry and a rapidly acting thixotropy providing gelling agent, and allowing the sealing composition to remain at rest in the zone whereby the sealing composition rapidly gels and then sets into a hard impermeable mass therein.Type: ApplicationFiled: December 11, 2001Publication date: July 3, 2003Inventors: B. Raghava Reddy, Karen Luke
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Patent number: 6572696Abstract: New additive for projectable agglomerating materials in the building industry, said additive comprising at least one clay of rheologic grade, preferably sepiolite, a water reducer/fluidifier and an aeration agent, as well as the utilization of said additive as component of projectable agglomerating materials such as mortars and concretes.Type: GrantFiled: November 10, 2000Date of Patent: June 3, 2003Assignee: Tolsa, S.A.Inventors: Antonio Alvarez Berenguer, Francisco Javier Limpo Orozco, Bernardo Enrique Del Valle Álvarez, Manuel Hidalgo Martín
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Patent number: 6537365Abstract: Cement clinker, characterized in that it comprises Al2O3 and Fe2O3 wherein the mass ratio of Al2O3/Fe2O3 is 0.05-0.62, and alkali components and C2S wherein the content Y (mass %) of alkali components and the content X (mass %) of C2S satisfy the formula: 0.0025X+0.1≦Y≦0.01X+0.8. The production of the clinker allows the incorporation of alkali components into cement with an advantageous effect of enhancement of the hydration of belite and also with suppression of the lowering of flowability, which leads to the reuse of wastes containing alkali components as a cement raw material.Type: GrantFiled: October 8, 2001Date of Patent: March 25, 2003Assignee: Sumitomo Osaka Cement Co., Ltd.Inventors: Tatsuo Ikabata, Tatsushi Akiyama, Kazuhiro Kano
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Patent number: 6475275Abstract: A cement composition contains 35-85% by weight of a cement, 3-15% by weight of a clay, 1-50% by weight of an aggregate and/or a fibrous material, and 0.2-5% by weight of a high efficiency retarder. A benefit of the present invention is that equipment used to apply cement compositions need not be cleaned every night when used on a construction site.Type: GrantFiled: October 21, 1999Date of Patent: November 5, 2002Assignee: Isolatek InternationalInventors: Edward Nebesnak, Robert Ostertog
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Patent number: 6472061Abstract: A moisture control construction material is enhanced in decorativeness and improved in stain-resistance by glazing the surfaces thereof. The material is prepared by mixing soil material and clay, molding the mixture to a body, applying glate on the body and firing the body. The body may be performed biscuit firing before glazing. The moisture-absorbing-and-desorbing-performance thereof in each 8-hour cycle is more than 80 g/m2. The body has prosity of 20-25%. More than 40% of pores of the body have a radius of less than 0.1 &mgr;m.Type: GrantFiled: April 11, 2001Date of Patent: October 29, 2002Assignee: Inax CorporationInventors: Makoto Kotama, Hiroshi Fukumizu, Yukio Matsumoto, Masanari Toyama, Katsumi Yamamoto, Mitsunori Endo
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Patent number: 6406534Abstract: Clinkered materials containing high concentrations of {(C,K,N,M)4 (A,F,Mn,P,T,S)3 Cl,{overscore (S)})}(crystal X), and {C2S)3 (C{overscore (S)})3Ca(f,Cl)2} or C9S3{overscore (S)}3Ca(f,cl)2 (crystal Y), and/or {C5S2{overscore (S)}) (crystal Z) directly from the kiln, rapidly hardening ultra-high early strength cement including these clinkered materials, methods for forming and using said compositions and the cements so produced are claimed. The methods include the steps of forming a mixture of raw material containing CaO, MgO, Al2O3, Fe2O3, TiO2, Mn2O5, SiO2, SO3, Na2O, K2O, P2O5 and F, respectively designated C, M, A, F, T, Mn, S, {overscore (S)}, N, K, P and f, and heating said mixture to an elevated temperature between 900° C. and 1,200° C.; before determining average amount of crystals X, Y, and Z.Type: GrantFiled: November 20, 2000Date of Patent: June 18, 2002Inventor: Hassan Kunbargi
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Patent number: 6279655Abstract: A settable thixotropic material comprises a thixotrope and a settable substance, the material being capable of gelling reversibly in a gelling time of less than 60 seconds. The thixotrope conveniently comprises a fine grained clay, especially smectite clays, e.g. hectorites. It is preferred to use synthetic smectite type clay colloids, and goods results have been obtained with the synthetic clay known as Laponite RDS. The settable material conveniently comprises cement, particularly Portland cement. The thixotropic material finds use generally in oilwell applications, e.g. to plug lost circulation zones, to repair damaged or corroded casing, as grouts, and to limit annular gas migration. The material also finds particular application in techniques for completion of horizontal wells completed with slotted or pre-drilled liners.Type: GrantFiled: March 17, 2000Date of Patent: August 28, 2001Assignee: Schlumberger Technology CorporationInventors: Demosthenis Georgeou Pafitis, Stephen Nigel Davies, Geoffrey Colin Maitland
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Patent number: 6221148Abstract: In one embodiment, the present invention relates to a method of making a highly reactive pozzolan, involving the steps of forming a slurry comprising metakaolin and a liquid; wet milling the slurry; and separating the metakaolin from the liquid to provide the highly reactive pozzolan. In another embodiment, the present invention relates to a method of making a cement-based composition involving the steps of providing a highly reactive pozzolan by forming a slurry comprising metakaolin and a liquid, wet milling the slurry, and separating the metakaolin from the liquid; and combining the highly reactive pozzolan with at least one cementitious material.Type: GrantFiled: November 30, 1999Date of Patent: April 24, 2001Assignee: Engelhard CorporationInventors: Sharad Mathur, Karen Ann Gruber, Harry J. Reid
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Patent number: 6113684Abstract: Clinkered materials containing high concentrations of {(C,K,N,M).sub.4 (A,F,Mn,P,T,S).sub.3 Cl,S)}(crystal X), and {C.sub.2 S).sub.3 (CS).sub.3 C(f,Cl)} or C.sub.10 S.sub.3 S.sub.3 (f,cl) (crystal Y), and/or {C.sub.5 S.sub.2 S) (crystal Z) directly from the kiln, rapidly hardening ultra-high early strength cement including these clinkered materials, methods for forming and using said compositions and the cements so produced are claimed. The methods include the steps of forming a mixture of raw material containing CaO, MgO, Al.sub.2 O.sub.3, Fe.sub.2 O.sub.3, TiO.sub.2, Mn.sub.2 O.sub.5, SiO.sub.2, SO.sub.3, Na.sub.2 O, K.sub.2 O, P.sub.2 O.sub.5 and F, respectively designated C, M, A, F, T, Mn, S, S, N, K, P and f, and heating said mixture to an elevated temperature between 900.degree. C. and 1,200.degree. C.; before determining average amount of crystals X, Y, and Z.Type: GrantFiled: April 16, 1999Date of Patent: September 5, 2000Inventor: Hassan Kunbargi
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Patent number: 6093241Abstract: Certain wastewater streams coming out of boilers have temperatures higher than 180.degree. Fahrenheit. Organoclay granules where a quaternary amine acts as a binder will dissolve at that temperature. A cementitious binder is used to pelletice an organoclay made of sepiolite to overcome this problem.Type: GrantFiled: March 8, 1999Date of Patent: July 25, 2000Assignee: Biomin, Inc.Inventor: George R. Alther
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Patent number: 6080234Abstract: An ultra-high performance composite concrete, with low cement and fiber content and having good mechanical properties as well as good impacts, shocks and projectile protection properties, includes hydraulic binder, aggregates, an admixture of metal fibers. Particularly, the composite concrete includes 70% to 85% of particles (A) having a particle size distribution which ranges from 0.01 to 3 mm up to particle size distribution which ranges from 0.01 to 0.50 mm; 2% to 10% of particles (B) having particle size of between 0.01 and 1 .mu.m; 3% to 20% of hydraulic binder; 0.1 to 3% of a dispersant or plasticizer; 0.05% to 8.5% of fibers; and, mixing water, wherein the percentages being weight percentages based on the sum of the weights of constituents a) to d).Type: GrantFiled: July 24, 1997Date of Patent: June 27, 2000Assignee: Lafarge Materiaux de SpecialitesInventors: Bernard Clavaud, Gerard Cochet, Claudie Gnagne, Jean-Pierre Targe
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Patent number: 6027561Abstract: In one embodiment, the present invention relates to a cement-based composition containing at least one cementitious material and at least one highly reactive pozzolan, wherein the highly reactive pozzolan comprises spray-dried metakaolin. In another embodiment, the present invention relates to a cement-based composition containing at least one cementitious material and at least one highly reactive pozzolan, wherein the highly reactive pozzolan is characterized as comprised of agglomerated beads of microparticles, the agglomerated beads having a median diameter of at least about 10 microns and the microparticles having a median diameter of about 5 microns or less.Type: GrantFiled: April 12, 1999Date of Patent: February 22, 2000Assignee: Engelhard CorporationInventors: Karen Ann Gruber, John Hen
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Patent number: 5976240Abstract: An additive for reducing the calcium aluminate cement content in a refractory mix containing calcium aluminate cement. The additive is comprised of about 80% by weight amorphous, powdered metakaolin, the metakaolin having a mean particle size of less than about 3.0 microns, and about 20% by weight microsilica, the microsilica having a mean particle size of less than 45 microns.Type: GrantFiled: September 8, 1997Date of Patent: November 2, 1999Assignee: North American Refractories Co.Inventor: Thomas F. Vezza
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Patent number: 5961712Abstract: The invention provides cementitious mixtures, particularly for use as shotcrete binding materials. The resultant shotcrete has characteristics of rapid setting as low as 5 to 10 minutes, high early compressive strength (5 to 25 MPa in two hours curing, 20 to 60 MPa in one day curing), high permanent compressive strength and negligible shrinkage. High aluminous content roasted cement clinkers with gypsum, anhydrite, lime, limestone, bentonite and other additives are used in the mixtures. There are especially suitable for use in shotcrete engineering. The methods of using the improved shotcrete are similar to those of using Portland cement, with significantly decreased rebound at site.Type: GrantFiled: July 18, 1996Date of Patent: October 5, 1999Assignee: Sungeric International, Inc.Inventors: Henghu Sun, Shuqin Li, Weirui Xu
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Patent number: 5944888Abstract: The present invention is directed to an insulating coating for refractory articles, adapted to be applied by spraying or gunning, which is easy to apply, cost effective, eliminates the potential health hazards associated with ceramic fiber paper, and which imparts sufficient insulating properties to the refractory article in high temperature environments. More particularly, the present invention is directed to an insulating coating and a method of preparing the insulating coating wherein the coating composition is comprised of about 25% to about 75% by weight of lightweight aggregate, up to about 25% to about 75% by weight of binder, up to 0.5% by weight of organic fiber, up to about 15% by weight of an additive to improve green strength, and up to about 5% by weight of a foaming agent.Type: GrantFiled: January 9, 1998Date of Patent: August 31, 1999Assignee: North American Refractories Co.Inventors: Regis M. Perich, Harold D. Prior, Jr., Daniel F. Fura
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Patent number: 5716448Abstract: Excavated earth from construction sites may be recycled as backfilling material or grout by incorporating it into a hydraulic composite. This is done firstly by blending excavated soil with a solidifying quantity of a hydraulic material and a fluidifying quantity of water and at least one first admixture selected from the group consisting of hydroxycarboxylic acids, phosphonic acid derivatives and saccharides and derivatives thereof, and blending the mixture thus created with a cement-dispersing agent at a time between the addition of the hydraulic material and the commencement of set of the hydraulic material. The hydraulic composites thus created have good fluidity, good final strength and low proneness to cracking.Type: GrantFiled: July 8, 1997Date of Patent: February 10, 1998Assignee: MBT Holding AGInventors: Takao Furusawa, Kanji Higaki, Satoshi Okazawa
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Patent number: 5707443Abstract: A grouting material which is self-dispersing when brought into contact with a volume of water containing liquor or slurry and is settable to a solid mass after such dispersion, the material being in the form of self-dispersing granules or pellets and comprising a blend of component (A): a cementive constituent forming from 10 per cent to 95 per cent by weight of the composition; component (B): a dispersing constituent forming from 2 per cent to 75 per cent by weight of the composition; optional component (C): a swelling constituent which forms from 0 per cent to 50 per cent by weight of the composition; and component (D): a binder constituent which forms from 0.1 per cent to 10 per cent by weight of the composition; the percentages of components A, B, C and D adding to 100 per cent.Type: GrantFiled: October 11, 1995Date of Patent: January 13, 1998Assignee: British Nuclear FuelsInventors: David John Brown, Stephen Geoffrey Higson
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Patent number: 5603759Abstract: A pulverulent mix, sprayable when mixed with a liquid for forming a stable, cement-bonded insulating refractory which can be sprayed onto vertical and overhead surfaces without deformation, comprising a lightweight and/or dense refractory aggregate, a calcium aluminate cement, a microsilica, a ball clay, and a superfine refractory. The superfine refractory comprises 2 to 15 wt. % of the mix and the -325 mesh portion of the mix being from about 40 to 60 wt. %.Type: GrantFiled: May 30, 1995Date of Patent: February 18, 1997Assignee: Indresco Inc.Inventor: Andrew M. Burkhart
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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: 5551976Abstract: A solidified waste is formed from a difficult-to-compact hydraulic cement slurry for use in the disposal of hazardous waste. The slurry contains inorganic non-compactible hydraulic cement particles, a concrete superplasticizer compound, water, and filler particles containing radionuclide and/or toxic contaminants. The slurry is then transferred to a storage vessel, such as a subterranean formation, to cast a stronger, denser solidified waste than a comparable solidified waste containing no superplasticizer.Type: GrantFiled: December 21, 1994Date of Patent: September 3, 1996Assignee: Union Oil Company of CaliforniaInventor: William C. Allen
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Patent number: 5549745Abstract: An essentially non-slumping, high density, low moisture and low cement castable composition, consisting of a tempered, pumpable first component containing the castable solids and consisting essentially of a refractory aggregate, a calcium-aluminate cement, a flow aid, a deflocculating agent, and water, the water being present in the lowest amount sufficient to achieve a pumpable consistency of the tempered first component, and a flocculating agent as a second component to be added to said first component at time of installation in an amount sufficient to give the castable a dried bulk density of at least about 120 pcf.Type: GrantFiled: October 27, 1995Date of Patent: August 27, 1996Assignee: Indresco Inc.Inventors: Mark C. Langenohl, Gustav G. Hughes
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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: 5395442Abstract: Lightweight concrete roof tiles are produced by extruding a latex/cement/lightweight aggregates/water mix in a prescribed sequence. The composition comprises:(a) 45-65 parts by weight of an acrylic latex emulsion;(b) 130-180 parts by weight of a cement;(c) 360-400 parts by weight of expanded shale lightweight aggregates; and(d) 50-75 parts by weight of additional water.This lightweight concrete roof tile of the present invention is about half the weight and about the same strength, and absorbs the same amount of water of conventional roof tiles.Type: GrantFiled: April 14, 1993Date of Patent: March 7, 1995Assignee: Boral Concrete Products, Inc.Inventors: Harvey R. Dunton, Francis C. Petersen
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Patent number: 5366550Abstract: A novel cement-based composition comprising a cement powder, a polymeric latex composition, and a water-soluble polysaccharide compound is disclosed. This composition is useful in adhering ceramic and vitreous tiles to plywood substrates. The composition can also be formulated to be an underlayment for preparing a substrate for flooring including carpet, tiles, wood flooring, etc.Type: GrantFiled: April 2, 1993Date of Patent: November 22, 1994Assignee: TEC IncorporatedInventor: Gregory W. Schad
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Patent number: 5302200Abstract: An admixture for a dense and durable concrete mix consisting essentially of diatomaceous earth and silica fume in the ratio of from 1 to 1 up to 1 to 8. Optionally, fly ash and lignosulfonate dispersant may be added to the admixture.Type: GrantFiled: November 27, 1991Date of Patent: April 12, 1994Assignee: Specrete - IP IncorporatedInventors: David A. Smetana, Alfonzo L. Wilson, Richard J. Lenczewski
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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: 5198027Abstract: An article for rural building construction and road building obtained by a thermal treatment of a mixture of:(a) at least an altered silicate containing alumina and calcium;(b) at least a carbonatic rock;(c) a crystallization accelerator; and(d) optionally a basicity regulator.Type: GrantFiled: April 18, 1991Date of Patent: March 30, 1993Assignee: Contento Trade s.a.s. di Cioffi IlariaInventors: Maria P. Contento, Flavio Cioffi
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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: 5133806Abstract: There is disclosed a softy mud solidifying agent which comprises cement, and at least two members selected from the group consisting of pozzolanic substances, inorganic compounds and organic compounds. The solidifying agent is capable of solidifying dredged earth, sand, softy mud, etc. in such a manner that their mixture can be re-cast into water to form submerged banks, artificial fish-gathering places, etc., without causing water pollution.Type: GrantFiled: January 6, 1992Date of Patent: July 28, 1992Assignees: Fujita Corporation, Onoda Chemico Co., Ltd.Inventors: Hiroyuki Sakamoto, Masao Sagara, Masao Shimoda, Kitsugi Kyoichi
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Patent number: 5098873Abstract: A low cement castable refractory comprising 85 to 96% by weight of a calcined ultrafine bauxite aggregate characterized by a particle size of less than 10 um, 2 to 10% by weight of a suitable cement material, 0 to 8% of weight of a thixotropic agent and 0 to 2% by weight of suitable deflocculants and plasticizers, the cement material comprising calcium aluminate cement having an alumina content of 40 to 85% and the thixotropic agents being selected from those containing microfine silica, and/or reactive alumina, the inorganic deflocculants and plasticizers being selected from alkali phosphates, lignosulphonates or naphthalene sulphonates. A method of making a low cement castable refractory and installing a low cement castable refractory are also described.Type: GrantFiled: March 11, 1991Date of Patent: March 24, 1992Assignee: Comalco Aluminum LimitedInventors: Leslie C. Edwards, Paul J. Chiron, Raymond W. Shaw
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Patent number: 4981521Abstract: Fire retardant coatings for metal structural members are obtained by spraying onto the structural members settable plaster compositions which are air-containing pumpable aqueous slurries of plaster, clay prill aggregate, cellulose and glass fiber reinforcement and foaming agent. The specially prepared clay prill aggregate has a low aspect ratio of near unity and is an acceptable substitute for the exfoliated vermiculite aggregate of prior coating compositions.Type: GrantFiled: May 9, 1988Date of Patent: January 1, 1991Assignee: W. R. Grace & Co.-Conn.Inventors: Robert J. Bettacchi, Mary Driscoll, Dennis M. Hilton
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Patent number: 4957556Abstract: Methods for forming very early setting, ultra high strength cements and the cements so produced are claimed. The methods comprise forming a mixture of raw materials containing SiO.sub.2, Al.sub.2 O.sub.3, CaO, Fe.sub.2 O.sub.3, and SO.sub.3, respectively designated S, A, C, F, and S such that the overall molar ratio of A/F exceeds approximately 0.64 and the overall molar ratio of S/A+F is between approximately 0.35 and 0.25. This mixture is heated to n elevated temperature between 1,000.degree. C. and 1,200.degree. C. for a sufficient period of time to produce a clinker containing high concentrations of C.sub.4 A.sub.3 S. The average amount of C.sub.4 A.sub.3 S is then determined and a final mixture is formed utilizing the high C.sub.4 A.sub.3 S clinker, C containing hydraulic or portland type cement and soluble CS anhydride to produce a final cement mixture having a C.sub.4 A.sub.Type: GrantFiled: June 8, 1989Date of Patent: September 18, 1990Inventor: Hassan Kunbargi
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Patent number: 4943544Abstract: A refractory composition is disclosed which possesses low porosity, high density, exceptional strength and high abrasion resistance and is useful for lining fluid catalytic converter units, e.g., catalyst transfer lines, riser lines, J-bends, cyclones and all other areas where hot abrasion resistance and low thermal conductivity are desired. The composition consists essentially of by weight: (a) 44 to 89% of an abrasion-resistant refractory grain; (b) 10 to 50% of a hydraulically setting cement; (c) 1 to 6% of a filler consisting of very fine, substantially spherical particles of a metal oxide selected from the group consisting of Al.sub.2 O.sub.3, Cr.sub.2 O.sub.3, ZrO.sub.2, TiO.sub.2, clay minerals, carbon and fume SiO.sub.2 ; and (d) 0.01 to 1%, based on the total weight of the constituents (a), (b) and (c), of additives selected from deflocculants and wetting agents.Type: GrantFiled: October 10, 1989Date of Patent: July 24, 1990Assignee: Corhart Refractories CorporationInventors: Charles N. McGarry, Clarence W. J. Miller, Thomas M. Wehrenberg