Entries |
Document | Title | Date |
20080196628 | Cement Compositions Comprising Rock-Forming Minerals and Associated Methods - Of the many methods and compositions provided herein, one method includes placing a cement composition in a subterranean formation, wherein the cement composition includes cement, rock-forming mineral materials, and water; and permitting the cement composition to set therein. Another method provided herein includes introducing a settable drilling fluid into a subterranean formation, wherein the settable drilling fluid includes cement, rock-forming mineral materials, water, and a set retarder; and permitting the settable drilling fluid to set in therein. A composition provided herein includes cement, rock-forming mineral materials and water. Another composition provided herein includes cement, rock-forming mineral materials, water, and a set retarder. | 08-21-2008 |
20080229978 | Construction Composition and Method for Making a Construction Product - A construction composition includes: an ash in an amount of 90.0-99.9 wt. %, based on the total weight of the construction composition, wherein the ash is fly ash or bottom ash; an additive composition in an amount of 0.1-10.0 wt. %, based on the total weight of the construction composition, wherein the additive composition includes a component from group (2a) and a component from group (2b), wherein group (2a) consists of metal chlorides and wherein group (2b) consists of silica, zeolite and apatite, and wherein group (2a) includes 70.0-99.0 wt. % of the total additive composition and group (2b) comprises 1.0-30.0 wt. % of the total additive composition; and cement, in an amount of 0.0-5.0 wt. %, based on the total weight of the construction composition. With this composition, fly ash can be used as construction material, having properties comparable or better than concrete. | 09-25-2008 |
20080308012 | Burnt Product - A burnt product is produced by burning a raw material containing chromium, in which the fine-grained portion is removed. Even in the burnt product produced from a raw material containing chromium, the chromium (VI) content is reduced. | 12-18-2008 |
20090013907 | Treatment of Fly Ash For Use in Concrete - A process for treating fly ash to render it highly usable as a concrete additive. A quantity of fly ash is obtained that contains carbon and which is considered unusable fly ash for concrete based upon foam index testing. The fly ash is mixed with an activator solution sufficient to initiate a geopolymerization reaction and for a geopolymerized fly ash. The geopolymerized fly ash is granulated. The geopolymerized fly ash is considered usable fly ash for concrete according to foam index testing. The geopolymerized fly ash may have a foam index less than 35% of the foam index of the untreated fly ash, and in some cases less than 10% of the foam index of the untreated fly ash. The activator solution may contain an alkali metal hydroxide, carbonate, silicate, aluminate, or mixtures thereof. | 01-15-2009 |
20090071378 | Ultra high strength fiber-reinforced cement composition, ultra high strength fiber-reinforced mortar or concrete and ultra high strength cement additives - Therefore, the problem to be solved by the present invention is to provide highly general purpose ultra high strength fiber-reinforced mortar or concrete that shows a higher fluidity (workability) at the fresh state, a higher bending strength with a less content of metal fiber by enhancing both the absolute value of the compressive strength of mortar -matrix excluding metal fiber and the ratio of the bending strength relative to the compressive strength simultaneously at the hardened state, and acceptability of fine aggregate being used in ordinary ready-mixed concrete. An ultra high strength fiber-reinforced cement composition is characterized in that it contains cement, silica fume, coal gasification fly ash, gypsum and metal fiber and that the mass ratio of silica fume : coal gasification fly ash is 95 through 50 portions: 5 through 50 portions. Ultra high strength fiber-reinforced mortar or concrete contains such a cement composition and fine aggregate. An ultra high strength cement additives is characterized in that it contains silica fume, coal gasification fly ash and gypsum as principal ingredients and the mass ratio of silica fume: coal gasification fly ash is 95 through 50 portions: 5 through 50 portions. | 03-19-2009 |
20090071379 | TREATMENT OF FLY ASH FOR USE IN CONCRETE - A process for treating fly ash to render it highly usable as a concrete additive. A quantity of fly ash is obtained that contains carbon and which is considered unusable fly ash for concrete based upon foam index testing. The fly ash is mixed with a quantity of spray dryer ash (SDA) and water to initiate a geopolymerization reaction and form a geopolymerized fly ash. The geopolymerized fly ash is granulated. The geopolymerized fly ash is considered usable fly ash for concrete according to foam index testing. The geopolymerized fly ash may have a foam index less than 40%, and in some cases less than 20%, of the foam index of the untreated fly ash. An optional alkaline activator may be mixed with the fly ash and SDA to facilitate the geopolymerization reaction. The alkaline activator may contain an alkali metal hydroxide, carbonate, silicate, aluminate, or mixtures thereof. | 03-19-2009 |
20090151604 | Cement additive and cement composition - A cement additive contains industrial waste and has the effect of inhibiting formation of monosulfate in a hardened cementitious material. The cement additive contains specifically calcium carbonate, gypsum and coal ash and/or blast-furnace slag powder. This enables efficient use of industrial waste, allows inhibiting monosulfate formation in the hardened cementitious material, and allows producing a hardened cementitious material having good durability (sulfate resistance). | 06-18-2009 |
20090158965 | CONCRETE HAVING HIGH WORKABILITY THROUGH CONTROL OF FINE-TO-COARSE PARTICULATES RATIO - Concrete compositions have a fine-to-coarse particulates ratio optimized for decreased viscosity and increased workability. The concrete compositions include at least water, cement, coarse aggregate, and fine aggregate and have a slump of at least 1 inch and a 28-day compressive strength of at least about 1500 psi. Workability is improved by minimizing the viscosity as a function of the particulates ratio. To improve workability, the concrete compositions include between 49-85% fine particulates (e.g., cement and fine aggregate) and between 15-51% coarse particulates as a percentage of overall particulates volume. For normal strength concrete (up to about 8500 psi, or 58.6 MPa), the fine particulates fraction comprises about 50-75% by volume of total particulates. For high strength concrete (>8500 psi, or 58.6 MPa), the fine particulates fraction comprises about 56-85% by volume of total particulates. Overall workability can be maintained or improved even if slump is decreased. | 06-25-2009 |
20090199741 | Method For Producing A Coated Basic Material For A Hydraulic Composition, Coated Basic Material For A Hydraulic Composition, Additive For A Hydraulic Composition And Method For Producing A Hydraulic Composition - The invention relates to a method for producing a coated basic material for a hydraulic composition ( | 08-13-2009 |
20100011995 | CEMENT MANUFACTURING APPARATUS AND METHOD - To provide a cement manufacturing apparatus and the like capable of increasing quantity of fly ash used in the apparatus while controlling unburned carbon content in cement within a permissible range. The cement manufacturing apparatus and the like comprises a removal means for removing unburned carbon from gypsum, and a grinding means for grinding gypsum from which unburned carbon is removed by the removal means together with clinker to generate cement. With the apparatus, total unburned carbon content in cement can be reduced, and the quantity of fly ash used in the apparatus can be increased by the reduced amount of unburned carbon. The removal means can remove unburned carbon contained in gypsum as well as unburned carbon contained in fly ash, and the grinding means may grind the fly ash from which unburned carbon is removed together with the gypsum, from which unburned carbon is removed, and clinker. The removal means may simultaneously remove unburned carbon contained in gypsum and unburned carbon contained in fly ash. | 01-21-2010 |
20100095872 | COAL ASH TREATMENT METHOD AND APPARATUS - To effectively utilize coal ash while reducing mercury concentration in cement kiln exhaust gas. Coal ash is received from a thermal power plant or the like; the received coal ash is separated into ash and unburned carbon; the separated ash is utilized in a cement manufacturing facility as a cement raw material; and the separated unburned carbon is utilized in the cement manufacturing facility in accordance with mercury concentration in gas exhausted from a cement kiln of the cement manufacturing facility. In case that the mercury concentration in the gas exhausted from the cement kiln of the cement manufacturing facility is high, in the coal ash, unburned carbon with high mercury content can be treated in facilities other than the cement manufacturing facility without feeding the unburned carbon to the cement manufacturing facility, or the quantity of such unburned carbon fed to the cement manufacturing facility can be adjusted. It is possible to separate mercury from the separated unburned carbon, and utilize the unburned carbon from which mercury is separated in the cement manufacturing facility as a fuel. | 04-22-2010 |
20100132591 | Hydraulic 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. | 06-03-2010 |
20100206198 | TITANIUM PRODUCTION WASTE BYPRODUCT AS PARTIAL CEMENT REPLACEMENT - An industrial waste byproduct from a titanium metal or a titanium dioxide production process can be utilized as a partial cement replacement. In some embodiments, the byproduct can comprise a byproduct from the production of titanium dioxide pigment from a sulphate process or from a chloride process. The cement can be used to make concrete and other cementitious material products for structural and non-structural uses, for example, grout, mortar, gunite, stucco, masonry, decorative stonework, bricks, blocks, roof tiles, floor tiles, cobblestones, pavers, combinations thereof, and the like. | 08-19-2010 |
20100251937 | CAPTURED CO2 FROM ATMOSPHERIC, INDUSTRIAL AND VEHICLE COMBUSTION WASTE | 10-07-2010 |
20100313793 | REDUCED-CARBON FOOTPRINT CONCRETE COMPOSITIONS - Reduced-carbon footprint concrete compositions, and methods for making and using the same, are provided. Aspects of the reduced-carbon footprint concrete compositions include CO | 12-16-2010 |
20110067601 | PRODUCTION OF CEMENT ADDITIVES FROM COMBUSTION PRODUCTS OF HYDROCARBON FUELS AND STRENGTH ENHANCING METAL OXIDES - The present invention provides combustion products of hydrocarbon fuels and controlled amounts of metal oxide strength enhancing materials. The combustion products are useful as additives to cementitious materials. A hydrocarbon fuel such as coal is introduced into a combustion chamber and selected amounts of materials comprising CaO, SiO | 03-24-2011 |
20110083585 | AQUEOUS FORMULATIONS - An aqueous slurry including a particulate pozzolan, different from silica fume, which pozzolan includes less than 80% silicon dioxide, and, optionally, a particulate substantially inert filler: wherein the dry matter content of the slurry is from 30% to 90% by weight; substantially all of the elementary particles of pozzolan and filler have an elementary particle size less than 100 μm; and the particles have a mean particle size less than 15 μm. | 04-14-2011 |
20110120348 | UPGRADED COMBUSTION ASH AND ITS METHOD OF PRODUCTION - Described and claimed herein is a method of producing enhanced combustion ash for use in pozzolanic applications or cement clinker manufacture. The method employs a primary process in which wet or dry feedstock is pulverized with sonication using one or more grinding media having a maximum component size of about 2 mm. Alternatively, the media may have a true grinding medium volume to chamber volume ratio of at least 0.29. Also disclosed an claimed is an enhanced combustion ash produced by the method, whereby the enhanced combustion ash has one or more qualities that make it particularly suitable in pozzolanic applications or cement clinker manufacture. | 05-26-2011 |
20110132233 | MANUFACTURE OF ARTICLES FROM FLY ASH - Methods of forming a shaped article having a matrix that contains sintered fly ash are disclosed that include forming a fly ash dough that includes fly ash and water. In one form a superplasticiser is added in the dough. A green article is formed in a desired shape from the fly ash dough that is subsequently fired so that the shaped article is hardened by sintering its fly ash matrix. In one form, the green article is cured under conditions of moderate heating and high humidity. A building element having a matrix of sintered fly ash is also disclosed. | 06-09-2011 |
20110162559 | METHODS OF MANUFACTURING AND USING A FLOWABLE CEMENT-BASED MATERIAL - Methods of manufacture and use of flowable materials are provided. The flowable fill materials include a cement-based fill material with a cement component and an aggregate component that are mixed with a chemical agent and the like in water. This provides the cement-based material in a flowable state that can be controllably set over time. | 07-07-2011 |
20110168059 | Captured Co2 from Atmospheric, Industrial and Vehicle Combustion Waste | 07-14-2011 |
20110174196 | Captured Co2 from Atmospheric, Industrial and Vehicle Combustion Waste | 07-21-2011 |
20120000396 | REDUCED-CARBON FOOTPRINT CONCRETE COMPOSITIONS - Reduced-carbon footprint concrete compositions, and methods for making and using the same, are provided. Aspects of the reduced-carbon footprint concrete compositions include CO | 01-05-2012 |
20120031306 | BRICKS AND METHOD OF FORMING BRICKS WITH HIGH COAL ASH CONTENT USING A PRESS MOLD MACHINE AND VARIABLE FIRING TRAYS - There is provided an apparatus and process for manufacturing a brick or paver with a high content of coal ash (ranging from 60% to 100% coal ash or fly ash) so that a waste product (coal ash, and more particularly Class F coal ash) from a coal-fired power plant is incorporated into a building product (high content fly ash brick or paver). Also provided is a variable firing tray to support the dried, high content coal ash bricks/pavers as the dried products are sent through a tunnel kiln, to improve circulation around the individual bricks/pavers and thereby result in reduced firing time in the kiln. | 02-09-2012 |
20120152153 | GEOPOLYMER COMPOSITE FOR ULTRA HIGH PERFORMANCE CONCRETE - A geopolymer composite ultra high performance concrete (GUHPC), and methods of making the same, are provided herein, the GUHPC comprising: (a) a binder comprising one or more selected from the group consisting of reactive aluminosilicate and reactive alkali-earth aluminosilicate; (b) an alkali activator comprising an aqueous solution of metal hydroxide and metal silicate; and (c) one or more aggregate. | 06-21-2012 |
20120167806 | CEMENT MANUFACTURING APPARATUS AND METHOD - A cement manufacturing apparatus capable of increasing quantity of fly ash used in the apparatus while controlling unburned carbon content in cement within a permissible range. The cement manufacturing apparatus comprises a removal means for removing unburned carbon from gypsum, and a grinding means for grinding gypsum from which unburned carbon is removed by the removal means together with clinker to generate cement. With the apparatus, total unburned carbon content in cement can be reduced, and the quantity of fly ash used in the apparatus can be, increased by the reduced amount of unburned carbon. The removal means can remove unburned carbon contained in gypsum as well as unburned carbon contained in fly ash, and the grinding means may grind the fly ash from which unburned carbon is removed together with the gypsum, from which unburned carbon is removed, and clinker. | 07-05-2012 |
20120234208 | CEMENTITIOUS COMPOSITION INCORPORATING HIGH LEVELS OF GLASS AGGREGATE FOR PRODUCING SOLID SURFACES - A cementitious compostion for high density, low porosity sheet-form building materials having solid surfaces is comprised of cement, pozzolans, and a high percentage of fine and/or coarse glass aggregate. | 09-20-2012 |
20120255463 | Method of fabrication of construction materials from industrial solid waste - A low-pressure method for producing construction materials, such as blocks, bricks or slabs, utilizing high percentages of waste cement dust in admixture with additive material capable of effectively neutralizing the high lime content and agglomerating the extremely fine particles of the cement dust upon blending of the admixture with water. The resulting blend may simply be cast in molds of various shapes and sizes and cured under normal atmospheric pressure conditions into a hardened construction material exhibiting high strength, light weight and high thermal insulation. | 10-11-2012 |
20120291672 | PROCESS FOR REDUCING THE CONCENTRATION OF CARBON DIOXIDE IN AN EXHAUST GAS - A process for reducing the concentration of carbon dioxide in a gas including carbon dioxide and water vapour (for example a flue gas or a cement plant flue gas) which process includes contacting the gas with a particulate solid, which solid includes an alkaline earth metal oxide or hydroxide and a promoter selected from an alkanolamine; an unsubstituted or substituted piperazine; an unsubstituted or substituted morpholine; and a polyethyleneamine oligomer. | 11-22-2012 |
20120318172 | CALCIUM FERROALUMINATE COMPOUND, CEMENT ADMIXTURE AND ITS MANUFACTURING METHODS, AND CEMENT COMPOSITION - 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. | 12-20-2012 |
20130000521 | MANUFACTURED ITEM FOR THE BUILDING INDUSTRY - A manufactured item for the building industry is disclosed, made mainly of bottom ash and/or debris coming from incineration processes of municipal solid waste or of waste which may be assimilated thereto and/or of RDF and of one or more binders. Such manufactured item may have the shape of small bricks, bricks, blocks, small blocks, kerbs, interlocking paving blocks, panels, tiles, prefabricated slabs, beams, elements for walls, modular building elements, indoor and outdoor cladding elements, blocks, rocks, supports. Moreover, a process for the manufacture of an item for the building industry is disclosed, from bottom ash and/or debris coming from incineration processes of municipal solid waste or of waste which may be assimilated thereto and/or of FDR wherein the ash and/or debris undergo an oxidation process of the amphoteric metals and mixed with a binder. | 01-03-2013 |
20130104777 | COMPOSITION USED FOR HIGH STRENGTH AND IMPERMEABLE CONCRETE | 05-02-2013 |
20130104778 | Cementitious Compositions and Related Systems and Methods | 05-02-2013 |
20130118382 | UTILIZATION OF HEAVY OIL ASH TO PRODUCE SELF-CONSOLIDATED CONCRETE - A heavy oil ash self-compacting concrete can include aggregate, heavy oil ash fines, water, and cement. The heavy oil ash can include more than 90% carbon, by weight. In an embodiment, the heavy oil ash self-compacting concrete can flow under its own weight and yet maintain a stable mixture consistency. | 05-16-2013 |
20130125791 | IN-PROCESS ADDITION OF PROPERTY-ENHANCING ADDITIVES TO COAL COMBUSTION PRODUCTS USED IN CEMENTICIOUS MATERIALS - In-process systems and methods for treating coal combustion products with property-enhancing additives are disclosed. Coal combustion products such as fly ash are collected upon their formation and are contemporaneously treated with additives such as dispersants, rheology modifiers, retarders and accelerators to improve properties of the treated products when they are used in cement, concrete, mortar and other hydraulic mixtures. | 05-23-2013 |
20130213273 | PROCESS FOR PRODUCING CEMENT BINDER COMPOSITIONS CONTAINING MAGNESIUM - A process for producing a cement binder composition including one or more magnesium carbonates having the general formula w MgCO | 08-22-2013 |
20130340652 | CEMENT CLINKER, METHOD OF MANUFACTURING THE SAME AND CEMENT COMPOSITION - A cement clinker which can be sintered at 1,300 to 1,400° C. which is lower than the conventional sintering temperature and develops excellent strength characteristics such as mortar compression strength. | 12-26-2013 |
20140000490 | CATALYST COMPOSITION WHICH IS INTENDED FOR USE WITH POZZOLAN COMPOSITIONS | 01-02-2014 |
20140020604 | Metakaolin Production and Enhancement of Industrial Minerals - Methods for preparing metakaolin-enhanced industrial minerals. Mixing and heating kaolinite clay with an industrial mineral, such as activated carbon, that is between 750° F. and 1400° F. results in a metakaolin/activated carbon complex that provides good mercury sorbent qualities while producing a fly ash (after use as a sorbent in emissions applications) that has a lower foaming index. | 01-23-2014 |
20140230697 | CALCIUM SULFOALUMINATE CEMENT WITH TERNESITE - The present invention relates to a ternesite calcium sulfoaluminate clinker as well as a ternesite clinker containing 20 to 100% by weight of C | 08-21-2014 |
20140360409 | Ash Compositions Recovered from Coal Combustion Gases Having Reduced Emissions of HCl and/or Mercury - The description relates to production of fly ash with properties suitable for use in Portland cement. The fly ash compositions will contain coal ash, water-insoluble copper compositions and metallic mercury adsorbed onto ash particles. In one aspect, the coal ash composition will have a total mercury content of from 0.1 to 2.0 ppm and the water-soluble mercury is less than 20% of the total mercury content. The process entails combusting coal to produce hot combustion gases containing fly ash, CO | 12-11-2014 |
20150101511 | LIGNOCELLULOSIC BIOMASS FERMENTATION PROCESS CO-PRODUCT FUEL FOR CEMENT KILN - A fuel made from co-products derived from a lignocellulosic biomass fermentation process is used to fuel a cement production process. Filter cake and syrup co-products are mixed and dried, then burned in a cement kiln to create the temperatures needed for cement production. | 04-16-2015 |
20150299038 | CEMENT COMPOSITE WITH ENHANCED ABILITY TO ABSORB MECHANICAL ENERGY - The new cement composite has a matrix made of silicate cement, which is filled with natural crushed aggregate of arbitrary mineralogical composition and/or with artificial aggregate based on expanded clays. The composite further contains mixing water and plasticizers, while their amount is given by the required workability and the rate of the cement composite placement into formwork. The silicate cement has a dosage from 300 to 620 kg/m | 10-22-2015 |
20150368156 | UTILIZATION OF HEAVY OIL ASH TO PRODUCE SELF-CONSOLIDATED CONCRETE - A heavy oil ash self-compacting concrete can include aggregate, heavy oil ash fines, water, and cement. The heavy oil ash can include more than 90% carbon, by weight. In an embodiment, the heavy oil ash self-compacting concrete can flow under its own weight and yet maintain a stable mixture consistency. | 12-24-2015 |
20160102019 | INHERENTLY CONCRETE-COMPATIBLE CARBON SORBENTS FOR MERCURY REMOVAL FROM FLUE GAS - A sorbent composition and process of making sorbent designed for the removal of contaminants from flue gas and subsequent use in cement or concrete formulations are discussed. The sorbent composition comprises a coal feed stock prepared to have a total BET surface area of at least 350 m | 04-14-2016 |
20160168027 | COMPOSITE STRUCTURAL MATERIAL AND AGGREGATE THEREFOR | 06-16-2016 |