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7621995 |
Concrete mixtures having high flowability
A viscosity modifying agent is added to a concrete mixture to give the concrete desirable rheological properties. The viscosity modifying agent is incorporated into a foam admixture before it is...
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7591893 |
Dense mortar based on binary ettringite binder, comprising at least one poly(alkylene oxide) comb polymer and at least one structuring organic resin
A dense mortar includes:
(i) an ettringite binder, including calcium sulphate and a calcium aluminate mineral compound, (ii) at least one poly(alkylene oxide) comb polymer and, (iii) at least one...
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7556684 |
Amine containing strength improvement admixture
A strength improvement admixture composition is provided that increases the compressive strength of cementitious compositions without negatively increasing the setting time. The admixture comprises...
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7537656 |
Cement compositions comprising biodegradable monomers for retarding the setting thereof
Cement compositions may comprise one or more secondary amines substituted with a carboxyl group or salts thereof (e.g., 3-hydroxy N,N′-iminodisuccinic acid) for retarding the setting of such...
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7513948 |
Autogenous healing of cracks in concrete structures
Systems and methods for enhanced autogenous healing of cracks that are formed or are present in concrete-containing materials and surfaces are disclosed. Treatment modalities that include addition...
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7498090 |
Combination including corrosion resistant composition
A combination includes a composition providing corrosion resistance for application to a post-construction material, and a post-construction material, wherein the composition is applied to at least...
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7435293 |
Cement compositions comprising maltodextrin
Cement compositions, and more particularly, cement compositions that include maltodextrin. An example is a cement composition that includes: a hydraulic cement, water, and an additive comprising...
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7410536 |
Oxidation-stable iron oxide pigments, process for preparing them and their use
The present invention relates to oxidation-stable iron oxide pigments which have a coating of at least one organic substance, to their preparation and to their use.
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7407535 |
Corrosion resistant composition for treatment of concrete structures
Water soluble materials, compositions and systems for use in treating concrete-containing materials and surfaces are disclosed. Treatment modalities that include addition of the disclosed...
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7396403 |
Concrete reinforced with acrylic coated carbon fibers
Concrete products and dry concrete mixes comprise cement, acrylic coated carbon fibers, and any optional components such as silica fumes, slag, stone, sand, and/or other aggregates. Preferably, the...
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7393886 |
Cement dispersant and concrete composition containing the dispersant
A superior cement dispersant and a concrete composition containing the cement dispersant, the cement dispersant being a water-soluble amphoteric copolymer which contains an alkylene oxide adduct of...
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7381252 |
Anti-corrosion additive composition for concrete compositions for use in reinforced concrete structures
An anti-corrosive additive composition is provided that includes an alkali-based salt of dioic acid and a defoamer agent. The defoamer agent is generally selected from the group consisting of a...
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7350574 |
Methods of retarding the setting of a cement composition using biodegradable monomers
Methods of retarding the setting of a cement composition comprise including one or more secondary amines substituted with a carboxyl group or salts thereof (e.g., 3-hydroxy N,N′-iminodisuccinic...
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7303625 |
Treatment fluids comprising chlorinated carbohydrates
Treatment fluid compositions, and more particularly, treatment fluid compositions that include chlorinated carbohydrates. An example is a treatment fluid that includes: a hydraulic cement; water;...
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7273524 |
Concrete composition method of producing concrete compositions and cement admixture
The objective of the present invention is to provide a concrete composition in which the amount of air entrained can be maintained stably and which is excellent in strength and durability, a...
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7261923 |
Corrosion resistant composition for treatment of hardened concrete structures
A composition of a solution of a metal salt of a dioic acid that provides corrosion resistance and moisture resistance is disclosed for application to post-construction materials. The composition...
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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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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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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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7048873 |
Composition and method for repairing metal reinforced concrete structures
A composition and method for repairing metal reinforced concrete structures by applying a repair coating to surfaces of such damaged structures. The coating composition is a mortar/aggregate...
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7048793 |
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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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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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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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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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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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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6835243 |
Cementing in deep water offshore wells
An improved method of cementing casing in a deep water offshore formation penetrated by a well bore comprising the steps of preparing a foamed cement composition comprised of calcium aluminate...
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6827776 |
Method for accelerating setting of cement and the compositions produced therefrom
The invention pertains to a method for producing rapid setting cement and to the compositions produced therefrom. The setting time of hydraulic cement compositions comprising Portland cement and...
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6824607 |
Cement-bound active substance
The invention relates to a novel cement-bound material with a mineral binding agent, a mineral filler and/or mineral aggregates. Said cement-bound material has a proportion of a mass hydrophobing...
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6814799 |
Hydraulic composition for extrusion molding
To a hydraulic composition for extrusion molding comprising a hydraulic substance, organic reinforcing fibers, and a thickening process aid, a defoamer containing a polyether component is added for...
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6797050 |
Use of fermentation residues as flow-enhancing agents in cementitious materials
Herein is disclosed an admixture, for concrete, gypsum panels, and other cementitious products, derived from fermentation still bottoms. The admixture typically comprises protein, glycerol, and...
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6793730 |
Methods of cementing
The present invention provides improved methods for cementing. The methods are basically comprised of the steps of preparing a cement composition comprised of hydraulic cement, water, gas,...
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6764615 |
Migrating corrosion inhibitor fibers
Method and formulation for providing multiple sources of migratory corrosion inhibitors to metallic reinforcements embedded in concrete through addition of the inhibitors to the concrete mix. First...
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6761765 |
Admixture for cementitious compositions
An admixture for cementitious compositions for imparting water repellant properties to the cementitious composition. The admixture comprises a polymer, a surfactant, and a hydrophobic material that...
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6758897 |
Cementitious compositions having highly dispersible polymeric reinforcing fibers
Synthetic polymer reinforcing fibers provide dispersability and strength in matrix materials such as concrete, masonry, shotcrete, and asphalt. The individual fiber bodies, substantially free of...
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6740155 |
Method of delaying the set time of cement and the compositions produced therefrom
The invention pertains to a method of delaying the set time of cement and to compositions produced therefrom. The set time of hydraulic cement mixtures of fly ash pozzolans, specifically Class C...
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6709508 |
Dry mortar formulations modified with water-redispersible polymer powders
Dry mortar formulations comprising a) from 0.5 to 80% by weight of hydraulic binder, b) from 0 to 97% by weight of fillers, c) from 0 to 3.5% by weight of thickeners, d) from 1.0 to 80% by weight...
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6692564 |
Preparation of concrete accelerator
An alkali-free accelerator for sprayed concrete is prepared by dissolving aluminium sulphate and amorphous aluminium hydroxide in water which optionally contains one amine, and optionally adding at...
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6680348 |
Cement dispersant and concrete composition containing the dispersant
A cement dispersant (especially a dispersant for concretes with ultrahigh performance) comprising as a main component a water-soluble amphoteric copolymer obtained by copolymerizing (A) a...
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6660080 |
Particulate flow enhancing additives
The present invention provides particulate flow enhancing additives for improving the flow properties of dry particulate cementitious materials. The particulate flow enhancing additives basically...
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6648963 |
Composition for deactivating the surface of concrete or mortar and its process of application
The surface deactivating composition for concrete or mortar comprising a retardant, water and if desired a rheology modifying agent of the HASE type (emulsion, soluble in alkali, of a polymer with...
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6642320 |
Multi-functional cement dispersants and hydraulic cement compositions
A multi-functional cement dispersant contains a graft copolymer obtained by a graft reaction of one or more selected from polyoxyalkylene monoalkylester, polyoxyalkylene monoalkylether and...
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6630021 |
Cementing casing strings in deep water offshore wells
The present invention provides improved compositions and methods for cementing casing strings in deep water offshore formations penetrated by well bores. The cement composition basically comprises...
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