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us patent for cement admixture and cement composition

us patent for cement admixture and cement composition

US Patent for Cement admixture and cement composition ...

Jan 01, 1999  The ratio of the cement admixture, as combined in the present invention cement composition, is not especially limited, but when the cement admixture is, for

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US6294015B1 - Cement admixture and cement composition ...

The present invention provides a cement admixture and a cement composition, both of which displays little dependence of the water-reducibility upon temperature

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US8663384B2 - Cement admixture and cement composition ...

US8663384B2 US13/991,524 US201113991524A US8663384B2 US 8663384 B2 US8663384 B2 US 8663384B2 US 201113991524 A US201113991524 A US 201113991524A US 8663384 B2

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US8105433B2 - Cement admixture, and cement composition and ...

The cement admixture of the invention contains an expanding material and an alumina-silicate with swelling properties. The cement admixture is combined with

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US Patent for Cement admixture, and cement composition and ...

Feb 13, 2009  The cement composition preferably comprises 80-95 wt % cement in combination with the cement admixture as the additional component. A preferred embodiment of

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US7527689B2 - Cement admixture, cement composition, and ...

A cement admixture and a cement composition having a carbonation suppressing effect and a heat-of-hydration suppressing effect are provided. A cement

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US5223036A - Additive composition for cement admixture ...

US5223036A US07/804,874 US80487491A US5223036A US 5223036 A US5223036 A US 5223036A US 80487491 A US80487491 A US 80487491A US 5223036 A US5223036 A US

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Cement admixture and cement composition - Nippon Shokubai ...

United States Patent 6294015 . Abstract: The present invention provides a cement admixture and a cement composition, both of which displays little dependence

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Cement admixture and cement composition - Denki Kagaku ...

A cement composition comprising an inorganic hydraulic cement and the cement additive admixture of claim 4 in an amount to supply 0.15 to 5 parts by weight of

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Cement admixture and cement composition - Nippon Shokubai ...

A cement composition comprising, as essential constitutes, the cement admixture (6), cement and water constitutes one aspect of the present invention, and

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US Patent for Concrete composition method of producing ...

Feb 04, 2003  TECHNICAL FIELD. The present invention relates to a concrete composition, a method of producing concrete compositions, and a cement admixture. More particularly, it relates to a concrete composition comprising cement, water, a fine aggregate and a coarse aggregate as essential constituents and capable of giving curing products excellent in strength and durability, a method of

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US4586960A - Cement admixture - Google Patents

This invention provides a cement admixture comprising a copolymer of an olefin having 2 to 8 carbon atoms with an ethylenically unsaturated dicarboxylic acid anhydride and a cement admixture comprising the copolymer and a water-reducing agent. The cement admixture of this invention can prevent the lowering of the fluidity, or slump loss of a hydraulic cement mix such as concrete, mortar, or ...

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MY135684A - Copolymer for cement admixtures and its ...

the present invention provides: a copolymer for cement admixtures which displays high dispersibility with a small adding amount and excellent dispersibility particularly even in a high water reducing ratio area, a cement admixture utilizing the copolymer, and a cement composition, and further, a production process for the copolymer. the copolymer for cement admixtures comprises: constitutional ...

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US Patent for Renewable admixtures for cementitious ...

Apr 18, 2019  Cementitious compositions comprising a hydraulic cementitious material, a compound selected from the group consisting of a polyhydroxy aromatic compound, a polycarboxylic acid-containing compound or a salt thereof, ascorbic acid or a salt thereof, or a combination thereof, and a particulate material or a water soluble silicate-containing material that interacts with the compound are described ...

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Cement composition and method of cement casing in a well ...

This patent describes a cement composition for the preparation of a novel aqueous slurry useful in cementing casing in the borehole of a well comprising (1) a cement selected from Class A through H, (2) at least one polysaccharide, and (3) a 1,2-dicarbonyl wherein the amount of the 1,2-dicarbonyl is sufficient to obtain a viscosity of an aqueous slurry prepared from the composition at 140/sup ...

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WO2002102736A1 - Air entraining admixture compositions ...

Additive for cementitious compositions, comprising: at least one admixture, such a shrinkage reducing admixture, an air entraining admixture, a water reducing admixture, an inorganic salt, a corrosion inhibitor, an accelerator, a retarder, or mixture thereof; and a triblock polyoxyalkene copolymer surfactant.

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US4256504A - Fly ash-based cement - Google Patents

US4256504A US06/085,452 US8545279A US4256504A US 4256504 A US4256504 A US 4256504A US 8545279 A US8545279 A US 8545279A US 4256504 A US4256504 A US 4256504A Authority US United States Prior art keywords cement fly ash calcium sulfate composition calcium Prior art date 1979-10-16 Legal status (The legal status is an assumption and is not a legal conclusion.

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The 23 types of Concrete Admixtures(Additives)used in Concrete

Shrinkage reducing agent has almost no problems with the suitability of cement types, because it works through the physical process of water, has nothing to do with the mineral composition and admixtures of cement, and has good compatibility with other concrete admixtures. In the US patent of concrete shrinkage reducer, shrinkage reducer is ...

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Look Who's Patented 3D Printable Concrete « Fabbaloo

Jun 27, 2018  Or maybe so with US Patent 20180057405, published in March of this year. Part of a new patent on 3D printed concrete. The gist of the patent is that they’ve developed a way to produce true concrete, which is a mix of cement and a rocky aggregate material, from which most of the strength is obtained. Most previous attempts at 3D printed ...

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US Army new concrete composition: 3D printing of buildings ...

Cement is a homogeneous mixture that does not clog the machinery, whereas concrete is a non-homogeneous mixture that has the tendency to clog the machinery. Concrete composition, therefore, is not suitable for 3D printing. US army has developed and patented a printable concrete composition that also provides the required structural strength.

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US2010310846A1 CEMENTITIOUS FOAMS AND ... - patentguru

Lightweight cementitious foams of the invention have excellent dynamic and dimensional stability due to use of foaming system comprising polycarboxylate surfactant ...

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Cement Admixture - an overview ScienceDirect Topics

Its function as a cement admixture is traced back to ancient Rome. It is an outstanding water reducer with a plasticizing effect at low dosages and has good compatibility with other polymers such as retarders. Casein is a must in the formulation of self-leveling underlayers, a specific type of dry-mix cement mortar for flooring, because it ...

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Composition and Analysis of Domestic Patented Sleeve ...

The influence of admixtures and their interaction on the compressive strength of cement mortar specimens[J]. Journal of Henan Polytechnic University (Natural Science), 2011, 30(02): 206-10+24. [21] J.Q. Liu. Study on the composite properties of polycarboxylic acid

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History of Concrete - CEMEX USA - CEMEX

Cement has been around for 12 million years. The ancient Romans created a special concrete to make hydraulic cement that has lasted for over 2,000 years. Explore the timeline created by CEMEX USA to learn more about the history of concrete and cement.

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US Patent for Renewable admixtures for cementitious ...

Apr 18, 2019  Cementitious compositions comprising a hydraulic cementitious material, a compound selected from the group consisting of a polyhydroxy aromatic compound, a polycarboxylic acid-containing compound or a salt thereof, ascorbic acid or a salt thereof, or a combination thereof, and a particulate material or a water soluble silicate-containing material that interacts with the compound are described ...

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US Army Files Patent for New 3D Printable Concrete Composition

Jun 26, 2018  According to a blog post Patent Yogi shared with us, “The solid mix includes a binding agent, an aggregate, coarse sand, fine sand, a clay admixture, a fly ash admixture, and a silica fume ...

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Cement compositions - Patent - Europe PMC

Patent: United STATES Patent - United States. Application: US19810256154 on 1981-04-21. Publication: 1982-08-31. Abstract. A cement composition which comprises a filler, a binder to be used in admixture with the filler, and a curing agent for polymerizing the binder, which is characterized by that the binder comprises, based on the total weight ...

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Low fluid loss salt saturated cement slurries, additives ...

This patent describes a set retarded cement composition which is substantially non-thinning at high temperatures. It comprises: hydraulic cement; sufficient water to form a pumpable slurry; a set retarder comprising at least one member selected from the group consisting of a copolymer of 2-acrylamido, 2-methylpropane sulfonic acid (AMPS) and acrylic acid having an average molecular weight ...

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US Army new concrete composition: 3D printing of buildings ...

Cement is a homogeneous mixture that does not clog the machinery, whereas concrete is a non-homogeneous mixture that has the tendency to clog the machinery. Concrete composition, therefore, is not suitable for 3D printing. US army has developed and patented a printable concrete composition that also provides the required structural strength.

get price

Look Who's Patented 3D Printable Concrete « Fabbaloo

Jun 27, 2018  Or maybe so with US Patent 20180057405, published in March of this year. Part of a new patent on 3D printed concrete. The gist of the patent is that they’ve developed a way to produce true concrete, which is a mix of cement and a rocky aggregate material, from which most of the strength is obtained. Most previous attempts at 3D printed ...

get price

US2010310846A1 CEMENTITIOUS FOAMS AND ... - patentguru

Lightweight cementitious foams of the invention have excellent dynamic and dimensional stability due to use of foaming system comprising polycarboxylate surfactant ...

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Cement Additive And Cement Composition Patent Application

Fiber Cement Technology US Patent Report JHX . JHX will lose most of its FC composition, additives and coatings patents by the end of 2022. Significant dates occur in Spring 20 where JHX will lose two important patent families in FC composition, and between October 20 to Sept 21 when two-thirds of JHXs current additive and coatings inventions go off-patent.

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Packaging and dispensing system for fluid and semi-fluid ...

Jan 31, 1992  The present invention relates to a packaging and dispensing system especially suitable for semi-fluid or fluid cement admixtures. The admixture is encapsulated in a material, such as gelatin or wax, which ruptures, shatters, or disintegrates in the wet cementitious mixture during a period of mechanical mixing.

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Hoffmann Green Cement receives US patent for H-P2A

Feb 03, 2020  Hoffmann Green Cement Technologies has been granted a patent for its H-P2A (High Performance Alkaline Activation) technology in the US. Hoffmann says H-P2A is a geopolymer technology which enables low-carbon cements to be formulated, based on the use of co-products produced by industry. Julien Blanchard and David Hoffmann, co-founders of ...

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Composition and Analysis of Domestic Patented Sleeve ...

The influence of admixtures and their interaction on the compressive strength of cement mortar specimens[J]. Journal of Henan Polytechnic University (Natural Science), 2011, 30(02): 206-10+24. [21] J.Q. Liu. Study on the composite properties of polycarboxylic acid

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Water Reducing Chemical Admixtures SpringerLink

The theoretical water-cement ratio ranges from 0.27 to 0.32, depending upon the composition of the portland cement and the individual doing the theoretical calculations. The amount of water in excess of this ratio is often called “water of convenience,” in that it makes it more convenient to mix, transport, place, and finish the concrete.

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Cement Admixture - an overview ScienceDirect Topics

Its function as a cement admixture is traced back to ancient Rome. It is an outstanding water reducer with a plasticizing effect at low dosages and has good compatibility with other polymers such as retarders. Casein is a must in the formulation of self-leveling underlayers, a specific type of dry-mix cement mortar for flooring, because it ...

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Quick-setting cement composition containing Portland ...

Abstract. Craters and earth voids are quickly filled with a high-strength, quick-setting cement composition comprising a mixture of cement material consisting essentially of from about 9.5 to about 4 Pt. by wt of calcium sulfate hemihydrate to about 0.5 to about 6 Pt. by wt of Portland cement and water which is present in a quantity of from about 22% to about 70% by wt.

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