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7282093 |
Cement compositions with improved mechanical properties and methods of cementing in subterranean formations
Foamed cement compositions comprising carbon fibers, a hydraulic cement material, sufficient water to form a slurry, an expanding additive, and optionally, other ingredients, including any suitable...
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7261772 |
Gypsum composition
A gypsum composition comprising water, stucco, clay, an amine compound, a polyoxyalkylene, and a comb-branched copolymer is disclosed. The gypsum composition has improved fluidity. A method for...
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7261771 |
Method of controlling the viscosity of a cementitious mixture using oppositely-charged polyelectrolytes
A process for increasing the viscosity of an aqueous cementitious mixture during its working state by mixing oppositely-charge polyelectrolytes into the cementitious mixture.
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7258738 |
Cementing compositions including salts
Disulfonate salts of 2,4-pentanedione and methods for making such salts are described. The disulfonate salts are useful as cement dispersants. Cement compositions including such salts, methods for...
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7255738 |
Lightweight cementitious composite material
A lightweight cementitious composite material includes expanded synthetic polymer particulate having a particle size of between 0.0625 and 0.5 inches. A dispersant coating on said particulate...
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7244303 |
Set retarder compositions, cement compositions, and associated methods
Cement compositions, that comprise water, a cement, a strength-retrogression additive, and an acid, wherein the acid comprises ethylenediamine tetra acetic acid, nitrilotriacetic acid, or a...
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7241338 |
Sprayable, strain-hardening cementitious compositions
Sprayable fiber reinforced hydraulically setting mortars exhibit strain hardening behavior, and comprise hydraulically setting cement, less than 4 weight percent matrix interactive fibers, a...
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7232483 |
Cement composition having chromium reducer
Exemplary compositions and methods for reducing hexavalent chromium in cementitious compositions involve the use of a liquid additive composition, comprising stannous chloride. Along with the...
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7232873 |
Polycarboxylic acid cement dispersant and method for producing concrete secondary product
A polycarboxylic acid cement dispersant that can exhibit high dispersing ability and allow deforming in early stages in the case of producing concrete products, whereby the turnover of a formwork...
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7198669 |
Accelerator admixture
An accelerator composition for use with sprayed cementitious compositions, which is an aqueous solution or dispersion of a blend of the essential Components 1–3
Component 1—aluminium sulphate...
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7172022 |
Cement compositions containing degradable materials and methods of cementing in subterranean formations
The present invention provides cement compositions that include degradable materials, and methods of using such compositions in subterranean cementing operations. An example of a method of the...
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7166159 |
Cement composition, its use for the production of a self-leveling liquid casting, and a casting thus obtained
A cement composition for liquid casting, based on a binder comprising Portland cement and additives comprising at least a fluidizer and a combination of a thickening agent acting by steric...
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7160384 |
Amine-containing cement processing additives
An exemplary method of the invention comprises introducing into a grinding mill, wherein cement clinker is ground to provide cement powder, a diamine such as tetrahydroxylethylethylene diamine, and...
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7150322 |
Cement compositions comprising environmentally compatible defoamers and methods of use
Cement compositions including environmentally compatible defoamers and methods of using such cement compositions are provided herein. An example of a method is a method of cementing in a...
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7147706 |
Cementitious compositions and methods of making cementitious compositions
Cementitious compositions having high compressive strength and high flexibility. An efficient method of making such strong cementitious compositions entails pre-mixing cement additives that can...
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7147708 |
Fiber gel mixture for use in cementicious products
The present invention relates to a thickened aqueous solution, or gel solution, for use in providing fiber to a cement composition. Additionally, the present invention relates to a method for...
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7138012 |
Recycled waste as air entrainment admixtures
Use of waste generated as a byproduct of a first manufacturing process as an air entraining admixture (AEA) in a second product. In some instances, the waste materials can be used as an AEA during...
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7128782 |
Sulfate dispersion chromate reducer
A chromium VI reducing composition comprising particles of solid material selected from the group consisting of iron (II) sulfate and tin sulfate, the particles being substantially uniformly...
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7128780 |
Process for producing building materials from raw paint sludge
A process for producing building materials, such as asphalt, cement, concrete, mortar, or plaster board from liquid paint sludge containing water and paint solids produced from overspray in...
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7128781 |
Cementitious compositions and methods of making cementitious compositions
Cementitious compositions having high compressive strength and high flexibility. An efficient method of making such strong cementitious compositions entails pre-mixing cement additives that can...
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7083703 |
Filler and a process for the production thereof
A filler comprising cellulose or lignocellulose fibrils on which light-scattering material particles have been deposited, and a process for the manufacture thereof. In the filler according to the...
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7067003 |
Use of dunder in concrete compositions
A cementitious mixture for concrete including an admixture including dunder having a solids content in a range of from 5% to substantially 100% by weight, the dunder being added to the cement in a...
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7067000 |
Methods of cementing using a fluid loss control additive
A method of cementing, comprising displacing a cement composition into a workspace, wherein the cement composition comprises cement, water, and a fluid loss control additive comprising a polymer...
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7060129 |
Process for controlling gas migration during well cementing
The present invention provides a cement composition and a process for using the cement composition to inhibit gas migration from a subterranean zone into the cement. The process comprises...
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7036586 |
Methods of cementing in subterranean formations using crack resistant cement compositions
The present invention relates to subterranean cementing operations, and more particularly, to methods of cementing in subterranean formations using cement compositions that autogenously cure voids...
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7037369 |
Accelerator composition
An alkali-free accelerator for use with spray-applied cementitious compositions such as concrete and mortar is the reaction product in aqueous medium of amorphous aluminium hydroxide, aluminium...
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7037367 |
Concrete surface retarders
Surface retarder compositions of the invention comprise at least one surface retarder active suspended in a vegatable oil or derivative thereof, an animal oil or derivative thereof, or mixtures...
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7032663 |
Permeable cement and sand control methods utilizing permeable cement in subterranean well bores
This invention relates to improved methods for completing wells in unconsolidated subterranean zones. More specifically, the present invention relates to cement compositions useful in subterranean...
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7008479 |
Methods and cement compositions for cementing in subterranean zones
Methods of cementing in subterranean zones, improved cement compositions and improved additives are provided. The compositions are basically comprised of a hydraulic cement, sufficient water to...
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6953505 |
Stable and biodegradable foamed cement slurries, additives and methods
The present invention relates to stable and biodegradable foamed cement slurries, additives and methods. A foamed cement slurry of the invention comprises a hydraulic cement, sufficient water to...
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6953090 |
Cementing subterranean zones using cement compositions containing biodegradable dispersants
Methods of cementing subterranean zones using cement compositions containing biogradable dispersants are provided. The methods are basically comprised of the steps of preparing a hydraulic cement,...
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6942727 |
High early-strength fiber reinforced cementitious composition
Reinforced high early-strength cementitious members are made from water and strength generating ingredients, which include a hydraulic cement, a polycarboxylate dispersant and structural synthetic...
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6939935 |
Anionic polymers of acrylic and/or methacrylic acids and maleic esters, and salts thereof, and their use as cement/concrete additives
Anionic polymers obtainable by: (a) esterifying maleic acid or its anhydride with alkyl polyalkylene glycols; (b) copolymerizing the esters obtained with (meth)acrylic acid; and (c) converting the...
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6939402 |
Cement admixture having superior water-reducing properties and method for preparing the same
The present invention provides a cement admixture that comprises at least one of a carboxylic acid based copolymer comprising a reactive surfactant as a monomer or a copolymer salt obtained by...
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6916369 |
Beneficiated water reducing compositions
Exemplary compositions comprise at least one aldopentonic acid, such as xylonic acid; and further comprise a lignin, a lignosulfonic acid or its salt, an additional sugar acid such as a aldohexonic...
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6893496 |
Cement compositions and admixtures therefore
Blended cement compositions for mixture with aggregate and water to prepare cementitious products. Such blended cement compositions contain cement, calcined diatomaceous earth, calcined kaolin,...
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6893497 |
Use of water-soluble polysaccharide derivatives as dispersing agents for mineral binder suspensions
The invention concerns the use of water-soluble polysaccharide derivatives as dispersing agents for mineral binder suspensions. A partially hydrolyzed cellulose containing carboxyl groups and...
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6884509 |
Special turf filler comprising silica particles
An aggregate turf filler for use with the turf of athletic fields and landscaped areas which comprise crushed silica sand particles (SiO 2 ) which are substantially round in shape and are sized to...
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6875266 |
Concrete formulation
An additive for use in the preparation of lightweight concrete, said additive including a blend of from around 40% to 99% of organic polymeric material and from 1% to around 60% of an air...
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6872247 |
Amine-based, hexavalent chromium reducing agents for cement
Methods and compositions involving hexavalent chromate-reducing agents, particularly hydroxylamine, hydrazine, or their salts or derivatives, for use in cement compositions and cement processing.
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6869476 |
Waterproof admixture composition for concrete having excellent anti-corrosive performance
Disclosed herein is a waterproof admixture composition for concrete which is added to fabricate concrete having excellent anti-corrosive performance. The waterproof admixture composition can...
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6869474 |
Very fast setting cementitious composition
Extremely fast setting of cementitious compositions for producing cement-based products such as cement boards is made possible by adding an alkanolamine to a hydraulic cement such as portland...
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6858661 |
Defoamer for water reducer admixture
An exemplary admixture system for cementitious compositions, comprises a polycarboxylic acid type water reducer and a tertiary amine defoamer having an average molecular weight of 100-1500 and more...
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6858075 |
Thin concrete repair composition for alkali-aggregate reaction affected concrete
A cement repair composition is provided for repairing thin concrete. The composition comprises, in weight percentages: fine aggregates, 50-80%; Portland cement, 10-20%; reinforcing fibers such as...
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6858074 |
High early-strength cementitious composition
A high early-strength cementitious composition comprising a hydraulic cement; and a combination admixture system wherein the combination admixture system comprises a polycarboxylate high range...
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6855201 |
Cementing compositions
A cement composition is basically comprised of a hydraulic cement, water in an amount sufficient to form a pumpable slurry and a fluid loss control polymer additive comprised of 69 weight % of the...
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6852159 |
Gypsum slurry compositions
A gypsum slurry composition contains gypsum, a dispersant and water. A graft copolymer substance of a specified kind, which is one or more of graft copolymers and their salts obtained by specified...
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6849118 |
Admixture for minimizing the presence of surface dust on cement and concrete structures
An admixture for minimizing or preventing dust on surfaces of cured cement and concrete structures comprises a shrinkage reducing additive in combination with a fatty alcohol. Cementitious...
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6846357 |
Methods of cementing high temperature wells and cement compositions therefor
The present invention light weight high temperature well cement compositions and methods. The compositions are basically comprised of calcium aluminate, ASTM class F fly ash, sodium polyphosphate,...
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6843846 |
Methods and compositions for cementing subterranean zones
Methods and compositions for cementing subterranean zones penetrated by well bores are provided. The methods are basically comprised of the steps of providing a cement composition which comprises a...
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