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| Number | Title | Issue Date |
| 8182606 | Fiber cement building materials with low density additives This invention relates to a formulation with the addition of low density additives of volcanic ash, hollow ceramic microspheres or a combination of microspheres and volcanic ash or other low density additives into cementitious cellulose fiber reinforced building mat... | 05/22/2012 |
| 8177906 | 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 spra... | 05/15/2012 |
| 8172940 | 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 solut... | 05/08/2012 |
| 8133317 | 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... | 03/13/2012 |
| 8118927 | Cementitious compositions and methods of making and using A cementitious composition is provided that comprises an effective amount of bottom ash and an effective amount of cement. In one embodiment, a structural product formed from mixing the composition with an effective amount of water has a seven-day compressive streng... | 02/21/2012 |
| 8016937 | High strength cement, mortar and concrete including industrial by-products Cementitious compositions in which the cementitious properties of fly-ash are carefully controlled. The cementitious compositions may be substantially free harsh acids and bases such as citric acids (≈pH 2.2) and alkali metal activators including alkali hydroxides... | 09/13/2011 |
| 7998268 | Method to produce durable non-vitrified fly ash bricks and blocks A method of making durable, non-vitrified masonry units comprising fly ash, the method comprising mixing fly ash comprising a minimum of 15% CaO by weight and no more than about 10% loss on ignition, water, and an air entrainment agent to form a fly ash mixture; com... | 08/16/2011 |
| 7993449 | Binder composition, a construction compositon comprising said binder composition, as well as a method for preparing the construction composition and use thereof A binder composition includes a) an ash, b) an additive composition, wherein the additive composition includes one or more components from group (b1) and one or more components from group (b2), wherein group (b1) consists of metal chlorides and wherein group (b2) co... | 08/09/2011 |
| 7993450 | Method for removal of unburned carbon in fly ash The object is to remove unburned carbon in a fly ash in a stable and economically advantageous manner. A fly ash, water and a trapping agent are mixed together in a hybrid mixer (2), a shearing force is applied to the mixture to prepare a slurry containing su... | 08/09/2011 |
| 7976625 | Compounds and methods for treating fly ash A compound and method for treating fly ash includes an amphoteric, alkyl polyglycoside, ester, derivative of triglyceride, fatty alcohol, alkoxylated fatty alcohol, alkoxylated polyhydric alcohol, and mixtures thereof, wherein the treated fly ash is incorporated int... | 07/12/2011 |
| 7972432 | High early strength pozzolan cement blends A high early strength pozzolan cement includes larger sized pozzolan particles blended with smaller sized hydraulic cement particles containing tricalcium silicate and/or dicalcium silicate (e.g., Portland cement). Excess calcium release from the hydraulic cement wh... | 07/05/2011 |
| 7901505 | Sacrificial agents for fly ash concrete A method of producing cementitious mixtures containing fly ash as one of the cementitious components, under air entrainment conditions. The method involves forming a mixture comprising water, cement, fly ash, optionally other cementitious materials, aggregate, conve... | 03/08/2011 |
| 7892349 | Sacrificial agents for fly ash concrete A method of producing cementitious mixtures containing fly ash as one of the cementitious components, under air entrainment conditions. The method involves forming a mixture comprising water, cement, fly ash, optionally other cementitious materials, aggregate, conve... | 02/22/2011 |
| 7892350 | Sacrificial agents for fly ash concrete A method of producing cementitious mixtures containing fly ash as one of the cementitious components, under air entrainment conditions. The method involves forming a mixture comprising water, cement, fly ash, optionally other cementitious materials, aggregate, conve... | 02/22/2011 |
| 7837787 | 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... | 11/23/2010 |
| 7799128 | High early strength pozzolan cement blends A high early strength pozzolan cement includes larger sized pozzolan particles and smaller sized hydraulic cement particles which contain tricalcium silicate (e.g., Portland cement). Particles larger than 10 μm are predominantly (50%, 65%, 75%, 85% or 95%) pozzolan... | 09/21/2010 |
| 7780781 | Pyroprocessed aggregates comprising IBA and low calcium silicoaluminous materials and methods for producing such aggregates In accordance with an embodiment, a method for producing an aggregate is disclosed comprising mixing IBA and a second, silicoaluminous material having a calcium content less than the IBA. The method further comprises agglomerating the mixture, such as by pelletizing... | 08/24/2010 |
| 7736430 | Compositions and methods for controlling the setting behavior of cement slurries using carbonated fly ash A method of treating fly ash to modify the set time and the induction profile for a slurry comprising cement and the fly ash. The method comprising mixing fly ash with an aqueous solution comprising the calcium carbonate, thereby modifying the set time and the induc... | 06/15/2010 |
| 7727329 | Fiber cement building materials with low density additives This invention relates to a formulation with the addition of low density additives of volcanic ash, hollow ceramic microspheres or a combination of microspheres and volcanic ash or other low density additives into cementitious cellulose fiber reinforced building mat... | 06/01/2010 |
| 7708825 | Sialite binary wet cement, its production method and usage method The technical field of the invention belongs to concrete and cement. The invention relates to a sialite binary wet cement and its package, transportation, storage and application. The sialite binary wet cement is composed of a “female body” as a primary componen... | 05/04/2010 |
| 7708826 | Additive for dewaterable slurry and slurry incorporating same A cementitious slurry comprising fly ash having a predominant particle size of up to about 10 microns, and/or aluminous material having a predominant particle size of up to about 150 microns. The additive acts as a water reduction agent and can replace either wholly... | 05/04/2010 |
| 7704317 | Pyroprocessed aggregates comprising IBA and PFA and methods for producing such aggregates In accordance with an embodiment, a method for producing an aggregate is disclosed comprising mixing incinerator bottom ash (“IBA”) from a municipal solid waste incinerator and pulverized fuel ash (“PFA”) from coal combustion. The method further comprises ag... | 04/27/2010 |
| 7704316 | Coatings for building products and methods of making same A method of making and improving a coating formulation which includes a hydraulic binder. To the formulation is added a quantity of dewatering agent. The resultant slurry produced from said formulation may be applied to the product to be coated and dewatered through... | 04/27/2010 |
| 7682446 | Method to improve the characteristics of ash from municipal solid waste combustors In a combustion facility, a portion of the bottom ash (BA) is mixed with substantially all of the fly ash (FA) as necessary to obtain a stabilized material that prevents toxic metals solubility and achieves a desired TCLP extraction pH value, preferably in the range... | 03/23/2010 |
| 7670425 | Ultra high strength fiber-reinforced cement composition, ultra high strength fiber-reinforced mortar or concrete and ultra high strength cement additives An ultra high strength fiber-reinforced cement composition includes cement, silica fume, coal gasification fly ash, insoluble anhydrous gypsum, and metal fiber having a length between 5 and 30 mm and a diameter of between 0.1 and 1 mm. The coal gasification fly ash ... | 03/02/2010 |
| 7670424 | Methods for reclaiming and beneficiating fly ash particles and systems thereof A method and system for reclaiming and beneficiating fly ash particles includes recovering at least a portion of fly ash particles from reclaimed feed and supplying at least a portion of the recovered fly ash particles to at least one mixing reactor with a chamber w... | 03/02/2010 |
| 7658796 | Cementitious mixtures and methods of use thereof A cementitious mixture that is comprised of class C fly ash and other industrial waste product such as either bottom ash or economizer ash. The mixture is preferably 15-35% weight class C fly ash based on the total weight of the mixture. The mixture excludes Portlan... | 02/09/2010 |
| 7655088 | Synthetic aggregates comprising sewage sludge and other waste materials and methods for producing such aggregates In one example of an embodiment of the invention, a method for producing an aggregate is disclosed comprising mixing sewage sludge from a waste water treatment facility with a non-coal combustion ash silicoaluminous waste material, agglomerating the mixture to form ... | 02/02/2010 |
| 7582158 | Controlled low strength flowable fill composition with iron chelating compounds A rapid setting, controlled low strength composition of Class C fly ash is provided having a quantity of hydrated lime and an iron chelating compound in an amount sufficient to accelerate the hydration and set time of the fly ash. In some examples, a filler material... | 09/01/2009 |
| 7578881 | Electrically conductive concrete and controlled low strength materials having spent carbon sorbent Compositions are provided for increasing the electrical conductivity of concrete or controlled low-strength materials (flowable fill). One composition sets to produce a concrete and includes portland cement, water, aggregate, and particulate matter including a sorbe... | 08/25/2009 |
| 7575629 | Pollutant emission control sorbents and methods of manufacture Sorbents for removal of mercury and other pollutants from gas streams, such as a flue gas stream from coal-fired utility plants, and methods for their manufacture and use are disclosed. The methods include mixing fly ash particles with a sulfide salt and a metal sal... | 08/18/2009 |
| 7485184 | Sacrificial agents for fly ash concrete A method of producing cementitious mixtures containing fly ash as one of the cementitious components, under air entrainment conditions. The method involves forming a mixture comprising water, cement, fly ash, optionally other cementitious materials, aggregate, conve... | 02/03/2009 |
| 7462235 | System and method for decomposing ammonia from fly ash A system and method for decomposing ammonia from fly ash contaminated with ammonia is provided which includes maintaining the temperature of a bed of ammonia-contaminated fly ash at a decomposition temperature greater than 500° F. and less than 842° F. to decompos... | 12/09/2008 |
| 7459019 | Cement compositions for high temperature applications In a process to design high temperature cement sluries, the temperature stable phases (anorthite, wairakite) are selected; aluminum modifiers and silica oxides are added to the dry cement so that the elemental composition of the blend corresponds to the phases selec... | 12/02/2008 |
| 7442248 | Cementitious composition Cementitious compositions comprising pozzolonic materials, alkaline earth metals, and a catalyst to catalyze the reaction between the pozzolonic materials and the alkaline earth metals. ... | 10/28/2008 |
| 7441600 | Cement compositions with improved mechanical properties and methods of cementing in subterranean formations The present invention provides foamed cement compositions with improved mechanical properties and methods of cementing in subterranean formations, particularly in conjunction with subterranean well operations. The foamed cement compositions comprise carbon fibers, a... | 10/28/2008 |
| 7438756 | Method of improving material comprising a pozzolanic component The invention relates to a method of improving a material comprising a pozzolanic component. According to the invention the material is treated with an aqueous liquid resulting in treated, calcium-depleted material and a calcium-enriched aqueous solution, which are ... | 10/21/2008 |
| 7438500 | Erosion resistant barrier with varying permeabilities The invention relates to a barrier cap material including a blend of: a plurality of aggregate particles, and a plurality of manufactured composite particles including a hydratable sealant material. In a particular embodiment, the segregation of a blend of aggregate... | 10/21/2008 |
| 7419544 | Additive for dewaterable slurry and slurry incorporating same A cementitious slurry comprising fly ash having a predominant particle size of up to about 10 microns, and/or aluminous material having a predominant particle size of up to about 150 microns. The additive acts as a water reduction agent and can replace either wholly... | 09/02/2008 |
| 7413014 | Foamed fly ash cement compositions and methods of cementing Methods of cementing and low density foamed cement compositions therefor are disclosed. A low density foamed cement composition of the invention comprises fly ash comprising calcium oxide or calcium hydroxide, water present in an amount sufficient to form a slurry, ... | 08/19/2008 |
