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7632348 |
Lightweight concrete compositions containing antimicrobial agents
A lightweight concrete composition containing from 10 to 90 volume percent of a cement composition, from 10 to 90 volume percent of particles having an average particle diameter of from 0.2 mm to 8...
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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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7621087 |
Inorganic board and method for manufacturing thereof
The object of the present invention is to provide an inorganic board which has high mechanical strength, much improved dimensional stability, freezing and fusion resistance. To attain said object...
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7618490 |
Spraying material and spray technique employing the same
To provide a spraying material having an excellent quick-setting property and excellent adherability, a small alkali amount and excellent initial strength development, and a spraying method using...
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7608143 |
Methods of reducing hydroxyl ions in concrete pore solutions
Methods of reducing hydroxyl ions in concrete pore solutions are provided. Such methods are useful in providing resistance to gels which form in concrete due to the alkali-silica (ASR) reaction....
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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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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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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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7553423 |
Method for treating aqueous sludge, material so produced and the use thereof
The invention relates to a method for the accelerated dehydration of sludges in sludge disposal areas, especially of sludges from rivers and harbors, by the exclusive use of anionic polymer...
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7544243 |
Bulk material cover compositions and methods for applying
A cover composition that can be applied to a bulk material pile, such as landfill refuse, to protect the pile from wind, precipitation, and access by animals and insects is provided. The cover...
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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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7531035 |
Resorbable ceramic compositions
Ceramic precursor compositions and chemically bonded ceramic (CBC) materials, especially Ca-based, and a composite biomaterial suitable for orthopaedic applications. The CBC-system includes a...
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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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7501018 |
Chemically bonded biomaterial with tailored properties
A chemically bonded biomaterial element composed of an inorganic cement, exhibiting minimal dimensional changes upon hardening and long-time use, improved mechanical properties and improved...
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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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7494544 |
Polymer shell encapsulated gas as a cement expansion additive
Cement compositions containing an expandable material are disclosed. The compositions are suitable for use in oil and gas wells. An example of such an expandable material is a polymer encapsulated...
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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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7470322 |
Cementing composition with controlled mechanical properties
A cement composition for which the mechanical properties of the set cement can be controlled independently of the slurry density, both at high density (>16 ppg) and at low density (<12 ppg)...
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7465350 |
Hydraulic composition
A hydraulic composition of the present invention includes (A) 100 parts by weight of cement having a Blaine specific surface area of 2,500 to 5,000 cm 2 /g, (B) 10 to 40 parts by weight of fine...
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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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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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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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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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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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7402204 |
Flexible cementing compositions and methods for high-temperature wells
A well cementing composition comprises an hydraulic cement and flexible, acrylonitrile-butadiene copolymer particulate material. A method of cementing a well comprises mixing the composition with...
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7398828 |
Well cementing slurries containing fibers
The problem of fiber or particle settling in well cement slurries is addressed by providing a fluid containing two fiber components of differing properties. Such a well treatment fluid, comprising...
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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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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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7393408 |
Modified powdered mass for treatment of soils and loose building materials
Modified Powdered Mass for treatment of soils and loose building materials containing caustic lime and/or calcareous hydraulic binders and a modification component, where the modification component...
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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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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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7387674 |
Method for solidifying soil and industrial waste, and solidified materials prepared thereby
Disclosed herein are a method for solidifying soil and industrial waste and a solidified material prepared thereby. The solidified material of soil and industrial waste is prepared by adding 2-6...
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7357833 |
Cementitious material reinforced with chemically treated cellulose fiber
The present invention relates to a fiber-reinforced cement based or cementitious material, and process for making, where the reinforcing fiber is a chemically treated cellulose or non-cellulose...
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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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7326478 |
Cement binder based plate
The invention concerns a plate whereof the body comprises a binder containing Portland cement, a sulphoaluminous clinker and a calcium sulphate source: the binder comprises, by weight 30 to 80% of...
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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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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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7284930 |
Composition and method for forming a sprayable materials cover
An alternative cover for landfill may be formed from a slurry mixture of water, cementitious binder, adhesion enhancing admixture and fiber. These constituents may be mixed and applied to cover...
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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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7285167 |
Fiber reinforced concrete/cement products and method of preparation
Concrete and/or cement products and mixes with reinforcing carbon graphite fibers having a length of about 2½ inches to about 3½ inches, and/or nano and/or micron sized carbon fibers, and a...
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