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Portland type cement

Subclass of:

106 - Compositions: coating or plastic

106000000 - COATING OR PLASTIC COMPOSITIONS

106638000 - Inorganic settable ingredient containing

Patent class list (only not empty are listed)

Deeper subclasses:

Class / Patent application numberDescriptionNumber of patent applications / Date published
106739000 Portland type cement per se (e.g., clinker preparation, etc.) 28
106724000 Organic material containing 18
106714000 Slag containing (e.g., blast furnace slag, etc.) 11
106716000 With mica, talc, cinder, glass, vermiculite, coke breeze or kiln dust 5
20090272298Use of Pulverized Glass in a Composite Material - The use of pulverized glass having a particle size of 0 nm to 100 μm as an ingredient in a composite material, said composite material is obtained by mixing a base component and a hardener, is disclosed. The pulverized glass is useful in composite materials, such as either a cement-based material which is to be mixed with water as a hardener or in epoxies, acrylics, polyurethanes, butylenes or silicones.11-05-2009
20080295740Production of glass powder from waste glass, and products made using the same, especially concrete - A clean dry glass powder useful as a substitute for Portland cement in concrete, in paints, and for other known uses for glass powder produced conventionally can be produced from unsorted post-consumer waste glass, including a substantial fraction of non-glass items, by employing glass pulverizing equipment to reduce waste glass to small fragments, allowing removal of trash, employing a multistep washing process to clean the glass fragments, in the preferred embodiment using aggregate cleaning equipment, drying the fragments, preferably using fluidized bed techniques, and grinding the glass to a desired particle size, preferably using a ball mill, in combination with an air classification step to produce a glass powder of uniform particle size.12-04-2008
20120291674Methods of Plugging and Abandoning a Well Using Compositions Comprising Cement Kiln Dust and Pumicite - The present invention is directed to plug-and-abandon operations that use plugging compositions comprising cement kiln dust, pumicite, and/or lime. An embodiment includes a method of plugging a well bore for abandonment comprising: placing a plugging composition in the well bore, the plugging composition comprising: cement kiln dust in an amount of about 5% to about 100% by weight of cementitious components, pumicite in an amount of about 5% to about 100% by weight of cementitious components, 0% to about 24% of Portland cement by weight of cementitious components, and water; and allowing the plugging composition to set and form a plug.11-22-2012
20090211495Concrete block and method of making same - A concrete block mixture includes Portland cement, a natural aggregate filler, water, and a quantity of particularly sized glass particles. The associated method of producing blocks from the mixture eliminates the need of curing the blocks in a heated humidity controlled environment in order for the blocks to attain the required water content for hydration of the cement.08-27-2009
20120227631Methods and Compositions Comprising Cement Kiln Dust Having an Altered Particle Size - Methods and compositions are disclosed that comprise cement kiln dust having a mean particle size that has been altered. An embodiment discloses a method of preparing cement kiln dust comprising: providing cement kiln dust having an original particle size; and altering the mean particle size of the cement kiln dust from the original size by grinding, separating, or a combination thereof. Another embodiment discloses a well treatment fluid comprising: cement kiln dust having a mean particle size that has been altered from its original size by grinding, separating, or a combination thereof; and water.09-13-2012
106738000 Rock, gravel, stone or carbonate containing (e.g., limestone, dolomite, etc.) 5
20090020044Hydraulic cements comprising carbonate compound compositions - Hydraulic cement compositions that include a carbonate compound composition, e.g., a salt-water derived carbonate compound composition containing crystalline and/or amorphous carbonate compounds, are provided. Also provided are methods of making and using the hydraulic cements, as well as settable compositions, such as concretes and mortars, prepared therefrom. The cements and compositions produced therefrom find use in a variety of applications, including use in a variety of building materials and building applications.01-22-2009
20090090278AQUEOUS SUSPENSION BASED ON HYDRAULIC BINDER AND A PROCESS FOR THE PRODUCTION THEREOF - Method for producing an aqueous suspension, which is based on a hydraulic binder, and a hardened binder product. According to the invention, a composition of blending agents is added in the aqueous phase into the binder, which composition comprises calcium carbonate particles having an average particle size of 2-200 nm, in order to generate an aqueous suspension and, if needed, mineral fillers are added into this suspension, in order to produce a hardening plaster or concrete mixture. Besides calcium carbonate, the composition of blending agents can comprise calcium hydrogen carbonate and meta-kaolin sinter, too. By using the present invention, it is possible to improve the properties of products which are bound by hydraulic binders; with the described combination of blending agents it is possible to affect for instance the early strength, the frost resistance, the phenomenon of bleading, the plasticizing, the size of the transition zone and the durability of concrete or plaster, and to reduce the quantity of the hydraulic binder.04-09-2009
20120067251EXPANSIVE MATERIAL AND ITS PREPARATION PROCESS - The invention provides an expansive material that allows for large expansion of concrete at a material age of 2 to 7 days after pouring and permits concrete to have higher initial compressive strength and makes sure good storage stability, and a process for preparing that expansive material.03-22-2012
20120145047METHODS AND COMPOSITIONS USING CALCIUM CARBONATE - Provided herein are compositions and methods including hydraulic cement, supplementary cementitious material, and/or self-cementing material. Methods for making the compositions and using the compositions are provided.06-14-2012
20120073474METHODS AND COMPOSITIONS USING CALCIUM CARBONATE - Provided herein are compositions and methods including hydraulic cement, supplementary cementitious material, and/or self-cementing material. Methods for making the compositions and using the compositions are provided.03-29-2012
106735000 Calcium sulfate specified (e.g., gypsum, anhydrite, plaster of Paris, etc.) 4
20100170420ADDITIVES AND METHODS FOR REDUCING HEXAVALENT CHROMIUM IN CEMENT - A method for reducing hexavalent chromium in cement comprising the addition, to said cement, of antimony (III) compounds as reducing agents.07-08-2010
20130139731CEMENTITIOUS BINDERS AND WOOD PARTICLES-BASED INCOMBUSTIBLE COLOURED COMPOSITE PANEL WITH STRUCTURAL HIGH PERFORMANCE - This invention relates to a composite panel made from wood and cementitious binders, with flat surfaces and several possible colours. The said panel comprises 35 to 85% of grey or white Portland cement; 10 to 30% of debarked resinous wood particles; 5 to 20% of semi-hydrated calcium sulphate; 0 to 10% of a surface accelerator; 0 to 10% of aluminium sulphate solution; 0 to 30% of calcium carbonate; and 0 to 15% of pigments. The invention uses the process of preparation for the existing VIROC panel, adjusting it to the new material. This panel, in addition to being very resistant and showing high performances in terms of resistance to impact, humidity, temperature variation, noise and fungi, as well as other microorganisms, also complies with all the requirements of the associated product standard.06-06-2013
20110100264METHOD FOR PRODUCING HYDRAULIC POWDER - The present invention produces the hydraulic powder through grinding of the hydraulic compound in the presence of a compound (a) prepared by reacting (A) at least one compound selected from polyhydric alcohols and alkylene oxide adducts thereof with (B) a sulfating agent.05-05-2011
20120285350SECONDARY SYNTHETIC METHOD FOR CALCIUM SULPHOALUMINATE MINERAL IN PORTLAND CEMENT CLINKER - A method for secondarily synthesizing calcium sulphoaluminate mineral in Portland cement clinker is provided. The method includes adding gypsum into raw Portland cement, calcination, then heating twice to re-form calcium sulphoaluminate mineral that has decomposed at high temperature in the clinker. This method can increase the content of calcium sulphoaluminate mineral in the clinker. As a result, the advantages of the calcium sulphoaluminate mineral in the clinker may be obtained, such as improvement of the early stage performance and long-term performance of the cement clinker and increase in the quantity of mixture in the cement.11-15-2012
106737000 Silica containing (e.g., sand, quartz, etc.) 4
20120234210CEMENT/AGGREGATE COMPOSITION, CONCRETE PRODUCT AND METHOD FOR MAKING A CONCRETE PRODUCT - A concrete product is produced by providing red dune sand having a particle size of 45 microns or less and mixing the red dune sand with hydraulic cement in a ratio of about 30% of the cement being replaced by the red dune sand. The cement and red dune sand are then mixed with fine and course aggregate, water and a superplasticizer and cast after pouring into a mold cavity. Then within 24 hours of casting, the cast article is steam cured for 12 hours under atmospheric pressure, demolded and placed in an auto clave at 100% humidity. The temperature in the auto clave is raised to 180° C. within one to two hours and maintained at that temperature for 4 to 5 hours. The temperature also increases the pressure to about 10 bars. The pressure is released to reach atmospheric pressure within 20-30 minutes and the temperature reduced gradually, so that the article can be removed.09-20-2012
20090301355Cementitious Composition and Concrete of Such Composition - A cementitious composition comprising an hydraulic cement and one or more aggregates being added to or mixed with the cement and water. The cement contains more than 20 percent of weight micronized aplite.12-10-2009
20110048287CEMENT/AGGREGATE COMPOSITION, CONCRETE PRODUCT AND METHOD FOR MAKING A CONCRETE PRODUCT - A concrete product is produced by providing red dune sand having a particle size of 45 microns or less and mixing the red dune sand with hydraulic cement in a ratio of about 30% of the cement being replaced by the red dune sand. The cement and red dune sand are then mixed with fine and course aggregate, water and a superplasticizer and cast after pouring into a mold cavity. Then within 24 hours of casting, the cast article is steam cured for 12 hours under atmospheric pressure, demolded and placed in an auto clave at 100% humidity. The temperature in the auto clave is raised to 180° C. within one to two hours and maintained at that temperature for 4 to 5 hours. The temperature also increases the pressure to about 10 bars. The pressure is released to reach atmospheric pressure within 20-30 minutes and the temperature reduced gradually, so that the article can be removed.03-03-2011
20110094421Dry Application Papercrete - A dry papercrete mix is formed by preparing a wet pulp of fiber material such as newsprint and sharp sand by mixing sand, fiber material and water in a batch or continuous mixer, drying the pulp to a moisture content below that which will cause a reaction with Portland cement and adding additional sands and/or pumice and Portland cement. The resulting dry, granular mix can then be handled stored and used in the manner which is conventional for concrete. The dry papercrete mix can also be applied by pouring the dry papercrete mix into a desired volume such as a form in a dry state and injecting water into the dry papercrete mix until the mix is sufficiently wetted.04-28-2011
106718000 Soil, diatomaceous earth, clay, slate or shale containing, or material for treating soil or earth (e.g., soil stabilization, etc.) 3
20120055376PORTLAND LIMESTONE CALCINED CLAY CEMENT - The claimed subject matter relates to a novel cement comprising Portland cement clinker and a supplementary cementitious material. The supplementary cementitious material comprises a heat treated clay material and an optionally heat treated carbonate material, wherein the clay material has been heat treated optionally together with the carbonate material in such a way that the heat treated clay material is substantially dehydroxylated while the optionally heat treated carbonate material remains substantially carbonated. This can be achieved by premixing the carbonate and clay materials before heat treating to 400-700 C, or heat treating the clay material separately to a temperature of up to 900 C. When used in the final application the cement results in much higher strengths than would be predict from any other combination of these materials.03-08-2012
20120186494Cement Compositions and Methods Utilizing Nano-Clay - The present invention includes well treatment fluids and methods utilizing nano-particles. An embodiment of a method of the present invention may comprise introducing a treatment fluid comprising nano-clay into a subterranean formation. The treatment fluid may be selected from the group consisting of a cement composition, a drilling fluid, a spacer fluid, and a lost circulation control composition. Another embodiment of the present invention may comprise a method of cementing. The method of cementing may comprise introducing a cement composition comprising a hydraulic cement, nano-clay, and water into a subterranean formation. The method further may comprise allowing the cement composition to set in the subterranean formation. Yet another embodiment of the present invention may comprise a treatment fluid, the treatment fluid comprising nano-clay. The treatment fluid may be selected from the group consisting of a cement composition, a drilling fluid, a spacer fluid, and a lost circulation control composition.07-26-2012
20080223259Compressive Strength Improvement of Cement and Gypsum Products - The invention relates generally to a cement or gypsum composition having improved properties, which is prepared by incorporating an enzyme into a cement material such as a cement, motar, or concrete, or into a gypsum product. The invention also relates to methods of manufacturing improved cement compositions and gypsum products, methods of improving the compressive strength of cement compositions and gypsum products, and methods of reducing the cost of such compositions by enabling the use of less expensive aggregates in the manufacturing process. More specifically, the invention relates to a cement composition or a gypsum composition, optionally including at least one aggregate and optionally including at least one pozzolan, comprising a cement material or gypsum optionally including aggregate(s) and pozzolan(s) having blended therein an enzyme.09-18-2008
106736000 Sulfur containing (e.g., alum, etc.) 3
20090194005CEMENTITIOUS COMPOSITION AND APPARATUS AND METHOD FOR MANUFACTURING THE SAME - A cementitious composition capable of forming high early strength cement when admixed with water may comprise, for each 100% by weight, no more than about 60% by weight C08-06-2009
20110226163METHOD FOR MANUFACTURING HEAVYWEIGHT AGGREGATE AND HEAVYWEIGHT CONCRETE - The invention has an object to provide a heavyweight fine aggregate and a heavyweight aggregate for a stiff heavyweight concrete having a slump of 0 to 3 cm, in which segregation from the cement paste is unlikely to occur, and to provide a stiff heavyweight concrete having a slump of 0 to 3 cm, using the heavyweight fine aggregate and heavyweight aggregate. The heavyweight fine aggregate comprises no less than 20 wt % of aggregate having a particle size smaller than 0.15 mm, and no less than 20 wt % of aggregate having a particle size from 2.5 mm to less than 5 mm. The above feature allows effectively inhibiting segregation between the aggregate and cement paste when blending the aggregate into the heavyweight concrete, and allows effectively increasing the filling rate in boxes when blending the aggregate into the heavyweight concrete for box filling.09-22-2011
20120272871CONCRETE COMPOSITION - A concrete composition comprising a mouldable mixture of aggregate, binder and liquid vehicle, wherein the aggregate comprises sulphur concrete-derived aggregate and wherein the binder comprises hydraulic binder. The use of crushed sulphur concrete as aggregate in cement-based concrete reduces the hardening time of the concrete.11-01-2012
106717000 Boron, elemental carbon or phosphorus containing 3
20110132234HYDRAULIC CEMENTS COMPRISING CARBONATE COMPOUND COMPOSITIONS - Hydraulic cement compositions that include a carbonate compound composition, e.g., a salt-water derived carbonate compound composition containing crystalline and/or amorphous carbonate compounds, are provided. Also provided are methods of making and using the hydraulic cements, as well as settable compositions, such as concretes and mortars, prepared therefrom. The cements and compositions produced therefrom find use in a variety of applications, including use in a variety of building materials and building applications.06-09-2011
20120085265INDUSTRIAL PROCESS FOR THE PRODUCTION OF A CLINKER WITH A HIGH CONTENT OF BELITE - A process for producing a clinker with a high content of belite, includes (i) introducing a raw meal into a calcination chamber of a cement plant kiln; (ii) calcining the raw meal at a temperature of from 1150° C. to 1375° C.; (iii) measuring the weight per litre of the product of step (ii) and eliminating the product having a weight per litre strictly less than 650 g/litre; (iv) measuring the quantity of SO04-12-2012
20130199417Concrete Reinforced With Hybrid Nanomaterials - Concrete reinforced with nanostructures and reinforcing concrete methods are provided having cement and dispersion including water, a surfactant, carbon nanotubes having on the external surfaces thereof carbon atoms substituted by atoms of another element or other elements, and carbon nanotubes possessing chemical groups on the surface thereof.08-08-2013
106734000 Halogen containing (F, Cl, Br, I) 1
20090277357Mineral Binder and Process for Producing Same - The invention relates to a mineral, hydraulic binder for producing concrete or mortars or cement suspensions, based on at least one cement. The cement comprises clinker phases such as, C11-12-2009
Entries
DocumentTitleDate
20100031854FAST-SETTING, FIBROUS, PORTLAND CEMENT-BASED BUILDING MATERIAL - A fast-setting, fibrous, Portland Cement-based building material is made by soaking wood chips in water to provide substantially saturated wood chips, combining the saturated wood chips with a slurry of Portland cement to provide a wood chip/cement slurry, mixing a slurry of monomagnesium phosphate (“MOP”) with the wood chip/cement slurry to provide a quick-setting MOP/wood chip/cement composition, and compressing the quick-setting MOP/wood chip/cement composition to make the fast-setting, fibrous, Portland Cement-based building material. The inventive composition combines the best properties of cement and wood, yet uses recycled materials to make an environmentally-friendly building material.02-11-2010
20110000402System and Method for Handling Recyclable Materials and Products Manufactured Therefrom - A system and method for handling recyclable materials and products manufactured therefrom is provided. The method includes receiving recyclable material extracted from post consumer and post industrial sources at a manufacturing facility, acquiring information associated with the recyclable material received at the manufacturing facility, such as properties and certification(s) relating thereto, and storing the acquired information in a database for subsequent access. The recycling method may also include manufacturing a product at the manufacturing facility from the recyclable material, generating product information associated with the product such as properties and certification(s) relating thereto, and storing the product information in the database. The product may then be shipped with the product information and certification information stored in a tangible medium to provide quality certified “green” recycled products for use in building construction.01-06-2011
20100037803Method for Manufacturing Concrete Containing Electric Arc Furnace Dust - A method for manufacturing concrete bodies or forms containing electric arc furnace dust in an amount of up to about 4% at elevated temperatures to provide concrete bodies is disclosed. The concrete bodies have improved compressive strength and slump retention capability. The method for producing the bodies includes the steps of providing pre-selected amounts of electric arc furnace dust, water, cement and aggregate. The electric arc furnace dust is mixed with water and then added to the cement and aggregate and mixed together at a temperature of about 32° C. and 45° C. to form a hot mixture. The hot mixture is added to a mold and cast at an elevated temperature to form a body with improved strength and slump retention characteristics.02-18-2010
20110253013RESTRAINING EXPANSIVE CONCRETE WITH NON-METALLIC FIBERS - Synthetic fibers, such as polypropylene fibers, are mixed in a shrinkage compensating concrete to provide restraint in lieu of conventional steel reinforcement used in a shrinkage compensating concrete. While the synthetic fibers have a low elastic modulus and low strength, they act to restrain expansion of the concrete in the same way that conventional steel rebar does. In addition, only a small amount of the synthetic fibers are needed to restrain the expansion. As a result, shrinkage compensating concrete can be used in more varied applications, and can be provided more quickly, easily and inexpensively. Construction time requirements and expenses of concrete structures are correspondingly reduced.10-20-2011
20100037802PROCESS FOR PRODUCING CONCRETE IN HOT WEATHER - A process for manufacturing concrete bodies at elevated temperatures including the steps of providing pre-selected amounts of cement, aggregate and water where the temperature of at least the aggregate and more likely the cement and water are heated to a temperature between about 32° C. and 45° C. The heated amounts of cement, aggregate and water are mixed at an elevated temperature within the aforementioned range and a set retarding, water reducing admixture added. The mixing is continued and the hot mixture including the set retarding, water reducing admixture is cast at an elevated temperature within the same range to provide a concrete body form or structure with improved short and long-term compressive strengths.02-18-2010
20110083586CONTROLLED RELEASE OF CHEMICAL ADMIXTURES - A method of controlling release of an admixture in a cement-based composition involves intercalating an admixture (e.g. an accelerator, a set retarder, a superplasticizer) for the cement-based composition into a layered double hydroxide or mixture thereof. A cement-based composition prepared in such a manner and containing a cement-based material (e.g. cement, mortar or concrete) has better workability, especially in respect of slump-loss characteristics.04-14-2011

Patent applications in class Portland type cement

Patent applications in all subclasses Portland type cement