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7601770 |
Multi-functional admixtures for concrete
A multi-functional admixture for concrete, having improved fluidity for providing hardened materials with improved early strength, smaller shrinkage rate, improved resistance against freezing and...
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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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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...
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7572330 |
Fresh concrete and admixture for fresh concrete
The invention relates to the composition of fresh concrete and admixtures for fresh concrete and can be used in the construction industry for producing monolithic and precast concrete and...
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7572328 |
Fast drying gypsum products
A slurry is made including water, at least 50% by weight calcium sulfate hemihydrate, and a specific polycarboxylate dispersant prepared using at least three repeating units. A first repeating unit...
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7569108 |
Prevention of latex inversion in saltwater cement compositions for use in subterranean formations and associated compositions
The prevention of latex inversion in saltwater cement compositions for use in subterranean formations by inclusion of a combination of latex stabilizers and associated methods of cementing....
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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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7543642 |
Cement compositions containing flexible, compressible beads and methods of cementing in subterranean formations
Cement compositions comprising flexible, compressible beads, processes for preparing such cement compositions, and methods of cementing in subterranean formations using such cement compositions....
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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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7527688 |
Cementitious compositions for oil well cementing applications
Cementitious compositions are provided that can be use in drilling oil and gas well applications. The compositions include a source of hydraulically settable cement, calcium carbonate, free lime...
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7524369 |
Low-density cement compositions, density-reducing additives, and methods of use
Methods of using density-reducing additives comprising low-density particulates in subterranean cementing operations are provided. In one embodiment, the present invention provides a method of...
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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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7497904 |
Liquid coloring suspension and colored cementitious composition
A cementitious composition is provided that is composed of hydraulic cement and a liquid coloring suspension. The liquid coloring suspension which contains polycarboxylate dispersant and pigment...
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7494543 |
Concrete compositions
A concrete for making articles such as fixtures, furniture and other accoutrements having high compressive and resistive strengths, good machining, cutting and abrasion resistance properties and an...
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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,...
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7482405 |
Cement additive
The present invention concerns a cement additive containing copolymers comprising one or more constitutional units represented by formula A: (A) R 1 is hydrogen, an alkyl group having 1 to 4...
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7476273 |
Cementitious block material utilizing spent blasting abrasive particles
An accelerated-curing concrete masonry unit (CMU) mixture includes aggregate material, hydraulic cement and spent blasting abrasive particles, and may also include paint residue particles. The...
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7473313 |
Gas-generating additives having improved shelf lives for use in cement compositions
According to various embodiments, gas-generating additives for use in a cement composition comprise: a gas-generating material at least partially coated with a mixture comprising a fatty acid ester...
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7462234 |
Wellbore servicing compositions
A wellbore servicing comprising a calcium aluminate cement and at least one gelation inhibitor wherein the calcium aluminate cement comprises less than about 50 wt. % alumina, greater than about 2...
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7455728 |
Method for retarding plaster setting and plaster preparation
A method for retarding plaster setting and plaster preparations, relies upon a composition including a. tartaric acid in an amount of at least 0.01 to 1.0 weight % (based on plaster amount); b....
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7455727 |
Integral water resistant fibre-cement
A method of producing a water resistant fiber-cement product. The water repelling agent can be added or applied to the fiber-cement or indeed the material forming the fiber cement at a number of...
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7449429 |
System for treating petroleum and petrochemical slop oil and sludge wastes
An initial chemical composition comprising selected surfactants, dispersants, and degreasers that liquefy, disperse, demulsify, degrease, inhibit corrosion and scale formation, and lower the pour...
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7448449 |
Strength retrogression preventer
Cementitious slurries capable of controlling and/or preventing strength retrogression during the cementing of a formation contain a bismuth salt or derivative thereof. Bismuth trioxide is...
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7445670 |
Foamed cement compositions and associated methods of use
A method is provided for reducing the density of a well cement composition for cementing in a subterranean formation. The method comprises providing a cement composition that comprises water and a...
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7442249 |
Cement compositions useful in oil and gas wells
Cement compositions containing low reactivity materials are disclosed. The compositions are useful in conditions involving high temperatures, high pressures, and tectonic forces such as oil and gas...
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7438757 |
Concrete block and method of making same
A concrete building block containing Portland cement, a filler, water, and a quantity of particularly sized plastic particles, such as spent abrasive particles of a thermoset plastic. The...
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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...
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7410538 |
Granulated hydrophobic additive for cementitious materials
A cementitious material in powder form comprising cement, also comprises sufficient of a granulated hydrophobing additive, which comprises form 5 to 15 parts by weight of an organopolysiloxane...
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7404855 |
Resilient cement compositions and methods of cementing
Resilient cement compositions and methods of cementing using the compositions are disclosed. A resilient cement composition of the invention comprises hydraulic cement, an aqueous rubber latex and...
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7399355 |
Fluid loss control additive and cement compositions comprising same
A fluid loss control additive comprising a crosslinked polymer and sugar and cement compositions comprising the same. In one embodiment, the fluid loss control additive comprises a polymer and a...
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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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7393814 |
Methods, cement compositions and oil suspensions of powder
Methods, cement compositions and oil suspensions of powders selected from the group consisting of micro-silica, silica flour, fine silica flour, silica sand, fine particle size cement, ultra-fine...
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7393407 |
Silicon oxide slurry and method for producing such slurry
The present invention relates to a slurry containing water, amorphous silica panicles having a particle size less than 1 micron and silica flour with a particle size between 2-200 microns. In order...
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7381264 |
Admixture
A liquid accelerator composition for sprayed concrete, comprising aluminium sulphate, amorphous aluminium hydroxide, alkanolamine and an organic dibasic acid anhydride. The compositions allow the...
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7374699 |
Slurry rheology modifier
A slurry rheology modifier comprises a first water-soluble low-molecular compound [referred to hereinafter as compound (A)] and a second water-soluble low-molecular compound [referred to...
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7357834 |
Cement composition for use with a formate-based drilling fluid comprising an alkaline buffering agent
A cement slurry comprising a base for reducing the impact of an alkaline solution may be displaced into a wellbore and allowed to set. The base may comprise a metal carbonate that is soluble in...
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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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7344592 |
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...
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7341627 |
Fiber reinforced concrete products and method of preparation
Concrete products and mixes with reinforcing carbon graphite fibers, the carbon fibers being provided in the form of resin coated warped beam fabric, and a method for producing reinforced concrete...
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7326290 |
Liquid setting accelerator for a composition comprising Portland cement
The invention relates to a setting accelerator for a composition comprising Portland cement, in the form of a slurry comprising at least one calcium aluminate, 0.5 4%, preferably 0.6 2.3% of an...
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7320730 |
Subterranean fluids and methods of using these fluids in subterranean formations
Subterranean fluids comprising a hydraulic cement in an invert emulsion, and methods of using such fluids in subterranean well cementing operations, are provided. The fluids comprise a hydraulic...
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7316742 |
Subterranean fluids having improved environmental characteristics and methods of using these fluids in subterranean formations
Subterranean fluids are provided that have improved environmental characteristics, and more particularly, subterranean fluids are provided that include a hydraulic cement in an invert emulsion....
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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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7303014 |
Casing strings and methods of using such strings in subterranean cementing operations
Improved casing strings, and methods of using improved casing strings in subterranean cementing operations, are provided. An example of an apparatus is a pipe string comprising at least one pipe...
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7294195 |
Water repellant gypsum compositions
In at least one embodiment, the present invention relates to a gypsum composition suitable for use in the manufacture of construction materials comprising a) gypsum, b) water, and c) a water...
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7294194 |
Emulsion admixtures for improving cement elasticity
Methods and cement compositions for sealing a subterranean zone penetrated by a wellbore. The cement compositions include cementitious material, a mixing fluid, at least one polar monomer, and at...
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7293941 |
Methods for cementing using compositions containing 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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7285165 |
Cement compositions comprising set retarder compositions and associated methods
Cement compositions are provided that comprise a hydraulic cement, water, and a set retarder composition, the set retarder composition comprising an acrylamide polymer derivative; and an iron...
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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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