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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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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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6824605 |
Additive for the preparation of ecological permeable concretes with high compression, bending and abrasion resistance, and production process
An additive for elaboration of ecological permeable concretes. The additive containing from about 24.5% to 28.2% by weight of a mixture made of dispersing agents, from about 3.3% to 3.8% by weight...
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6814798 |
Storable water-microsphere suspensions for use in well cements and methods
Storable water-microsphere suspensions for use in well cements and methods of cementing well bores are provided. The storable water-microsphere suspensions are basically comprised of water,...
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6808560 |
Pumpably verifiable fluid fiber compositions
The invention relates to fiber compositions that can be pumped and metered in the fashion of fluid chemical admixtures into a concrete mix, thereby enabling the fibers to be dispensed by concrete...
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6800129 |
High solids pumpable cement additives
Exemplary liquid cement additive compositions have high solids loading which includes alkali or alkaline earth metal salts and other cement additive components. The liquid carrier is preferably...
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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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6767399 |
Admixture for producing cementitious compositions having good fluidity and high early compressive strength
The present invention is an admixture for cementitious compositions that provides both good flowability and high early strength as is desired in the art. The admixture of the invention includes a...
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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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6752867 |
Antibacterial agent for concrete, concrete compositions and concrete products
The invention provides an antibacterial agent for concrete comprising a silver compound, a copper compound and an ion-retaining compound; a concrete composition comprising the antibacterial agent;...
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6749680 |
Thin concrete repair system
A cement repair material composition is provided for repairing thin concrete. The composition comprises, in weight percentages: fine aggregates, 50-80%; cement, 10-20%, said cement being selected...
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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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6739806 |
Cement compositions with improved fluid loss characteristics and methods of cementing in subterranean formations
The present invention provides cement compositions comprising an improved fluid loss control additive, and methods for cementing in a subterranean formation using such cement compositions. The...
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6723163 |
Concrete admixture
An accelerating admixture for sprayed concrete comprises: (a) the reaction product of aluminium hydroxide with an organic acid; (b) aluminium sulphate; and (c) at least one alkanolamine. Concrete...
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6712900 |
Method for the reduction of the degree of shrinkage of hydraulic binders
On object of the present invention is an agent for the reduction of the degree of shrinkage in hydraulic binders, whereby said comprises an alkanolamine of formula R—NH—(AOH) wherein R is...
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6706112 |
Additives based on hydroxyalkyl guar derivatives for use in mortars and mortars including them
Disclosed are cementitious mortar additives comprising a hydroxyalkyl guar derivative having a molar substitution of from about 0.7 to about 3. Also disclosed are dry cementitious mortar...
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6702890 |
Process for the production of fly ash slurry
The present invention describes an improved method for forming fly ash slurry by mixing fly ash and water with an additive containing 0.5-2 wt % ammonium salt of humic acid and 0.03 to 0.05 wt %...
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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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6689818 |
Dispersant compositions
A dispersant composition comprising (A) 20-80% by weight of an acetylene glycol or ethoxylated acetylene glycol and (B) 20-80% by weight of a graft product of an allyl alcohol-maleic...
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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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6669773 |
Fly ash/mixed plastic aggregate and products made therefrom
The present invention is directed at a synthetic lightweight aggregate composition comprising fly ash and a mixture of two or more polymer components. More specifically, the present invention is...
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6664360 |
Preparation of water-reducing copolymers for concrete
Alkoxylated acrylate and methacrylate macromonomers are disclosed that are useful in the preparation of water-reducing additives for concrete, ultraviolet light-curable adhesives, and...
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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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6656266 |
Cementing composition and application thereof to cementing oil wells or the like
Cementing compositions which are particularly suitable for squeeze cementing operations, comprise an aqueous phase, and a micro-cement, the aqueous phase including an aqueous suspension comprising...
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6656263 |
Lightened cement slurries
A lightened cement slurry for cementation of a well includes cement, at least one mineral filler, water, and resin particles obtained by polymerization from vinyl aromatic, alkyl acrylate or...
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6652643 |
Composition and process for improving the resistance to water penetration of cementitious products and cementitious products made therewith
A process and compositions for improving the resistance of cementitious products such as concrete, mortar, grout, paving, paving blocks, concrete masonry units, concrete pipe, concrete blocks,...
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6648964 |
Admixtures for mineral binders based on hydrogenated disaccharide, admixture-containing mineral binders, and a process for the preparation thereof
A novel admixture for mineral binders is composed of a polyol composition with a high hydrogenated disaccharide content (≧40%). The hydrogenated disaccharide is advantageously chosen from...
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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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6648962 |
Micro-granulose particulates
Substantially hydrated cementitious particulates useful for delivering admixtures and additives into adhesives, coatings, paints, and other matrix compositions such as cement, concrete, masonry,...
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6645289 |
Complex admixture and method of cement based materials production
The present invention relates to admixtures production and to a method of application of the admixtures in cement and concrete technology. The method allows production of high-strength and high...
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6641660 |
Stable well cementing methods and compositions
The present invention provides stable well cementing methods and compositions for sealing subterranean zones penetrated by well bores. The improved thermally stable and degradation resistant well...
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6641658 |
Rapid setting cementitious composition
A rapid setting cementitious composition useful for making cement boards employs an insoluble form of anhydrous calcium sulfate (anhydrite) to accelerate setting and to permit reducing the amount...
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6641661 |
High early strength cement and additives and methods for making the same
A method for improving early strength of cements, comprising introducing into a cement during the grinding thereof (a) at least one water reducer comprising a polyoxyalkylene polymer; (b) a sugar;...
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6638355 |
Synthetic aggregate and method of producing the same
A synthetic aggregate having a multiplicity of uses such as for mixing with a cementing material to form concrete, mortar or plaster is disclosed. The aggregate includes crushed fragments of a size...
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6635109 |
Process for making cements with silicon containing grinding aids
Hydraulic cement is made by a process in which (i) raw materials are crushed and ground, (ii) the crushed and ground raw materials and other components are burned and calcined to prepare a cement...
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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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6623558 |
Curable composition for tendon for prestressed concrete and tendon
A curable composition applied to the surface of a tendon for prestressed concrete contains at least an epoxy resin and a moisture-curing type curing agent. In the curable composition, the...
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6616751 |
Water-selective cementing composition
A cementing composition comprising a hydraulic cement powder dispersed in a solvent that is miscible both with water and hydrocarbons to make a slurry. The cement powder can be made up simply of...
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6616755 |
Self-levelling concrete and method for making a structural part
The invention concerns a self-levelling concrete and a method for making a structural part from said concrete. The concrete which comprises aggregate and solid particles with size grading not more...
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6616754 |
Segregation reducing agent consisting of curdlan and alkaline solution and hydraulic composition containing the segregation reducing agent
The present invention relates to a segregation reducing agent consisting of curdlan and alkaline materials and a hydraulic composition containing the segragation reducing agent, particularly, the...
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6610139 |
Methods of preparing particulate flow enhancing additives
Methods of preparing a particulate flow enhancing additive are provided. The methods are basically comprised of preparing a particulate flow enhancing additive for improving the flow properties of...
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6607592 |
Antishrinkage agent for concrete or mortar
The invention concerns a composition in dry state for mortar or concrete, comprising a cement and an antishrinkage agent. The invention is characterized in that the antishrinkage agent consist of a...
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6599647 |
Joined insulator body
Alumina cement mortar is used as a source material for a kneaded cement cured body for joining hardware onto an insulator body, whereby the insulator can maintain high initial and long term...
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6569234 |
Cement dispersant and cement composition comprising this
A cement dispersant which displays high dispersibility with a small addition amount and excellent dispersibility particularly even in a high water-reducing ratio area, and a cement composition...
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6554071 |
Encapsulated chemicals for use in controlled time release applications and methods
Encapsulated water soluble chemicals for use in controlled time release applications, methods of encapsulating the chemicals and methods of using the encapsulated chemicals are provided. The...
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6540826 |
Sulfate-free and alkali-free setting and hardening accelerator
Described are setting and hardening accelerators for hydraulic binders and said binder comprising compositions that are free of sulfates, alkali metals and chlorides. The setting and hardening...
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6537366 |
Concrete admixture with improved durability and efflorescence control containing a highly resilient colorant
A composition for coloring concrete and methods for making the composition is provided, which includes a hydrophobic efflorescence control agent selected from the group consisting of calcium...
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6528563 |
Low solids, high strength multi-use gelled adhesives and adhesive mastics
Multi-use homogeneous breakable gelled adhesives and adhesive mastics which can be used “as is” for the installation of various types of tile, including tiles with deeply grooved backs, stone,...
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