Abstract: A method for producing a transformable dry preform, in particular for the creation of a product made of composite materials, includes the sequence of the following steps: simultaneous weft/wale knitting of at least one stitch thread and at least one unidirectional reinforcement thread, at least one stitch thread including a material, the nature of which being different to that of a material comprised in at least one unidirectional reinforcement thread, at least one of the materials being thermoplastic and having a melting point lower than the melting point of at least one other material, referred to as reinforcement material; and creating of a three-dimensional knit that constitutes a dry preform in the shape of the product that is to be obtained. Additionally, a product made of composite materials can be produced using the dry preform created by the method.

Abstract: The invention describes a phosphate-based inorganic binder obtained by reaction between at least one basic constituent and an acidic phosphate salt, in the presence of a retarder which is an X+A? salt, the solubility of which in an aqueous medium, measured at 25° C., is greater than that of the acidic phosphate salt, and in which: X+ is a cation chosen from alkali metals, alkaline earth metals, zinc, aluminium and the ammonium ion, and A? is an acetate, formate, benzoate, tartrate, oleate, oxalate, bromide or iodide anion.

Abstract: A hybrid magnesium cement composition formed from an A-side component and a B-side component. The A-side component includes an A1-component including a light-burn grade magnesium-containing material, and an A2-component including a non-metallic oxide salt. A B-side component having a metal silicate polymer is included.

Abstract: Magnesium phosphate cement binder systems and method for providing magnesium phosphate cements are described. In an embodiment, a magnesium phosphate cement binder system may include magnesium oxide that has been calcined at a temperature of between about 900° F. to about 1800° F. The magnesium phosphate cement binder system may also include a phosphate material. Other formulations, compositions, and methods are also described.

Abstract: An inerting process for impurities in aggregates intended for preparation of hydraulic or hydrocarbon compositions, includes adding to the composition or to one of its constituents a cationic polymer corresponding to at least one derivative of a natural polymer or a polymer of natural origin selected from the group including dextrin (in particular yellow dextrin and white dextrin), chitosan, chitin, alginates, hemicellulose, pectin, polyols or proteins.

Abstract: Processes are provided that include additive compounds suitable for detecting the activity of an enzyme such as a lysosomal storage enzyme where the additive is a salt of oleic acid. Inclusion of a salt of oleic acid unexpectedly improves enzyme activity and reproducibility.

Abstract: A briquette for addition to the charge in a steelmaking or ironmaking furnace comprises a quantity of carbon fines, a material in powdered form, the material selected from the group consisting of iron powder and iron oxide, the material densifying the briquette and suppressing the slippery nature of the carbon fines, a quantity of magnesium carbonate, and a binder.

Abstract: Agricultural blends are described. The agricultural blend includes synthetic gypsum having ammonium sulfate and a by-product of slag, the slag being selected from the group consisting of steel slag, stainless steel slag, alloy steel slag, carbon steel slag, and phosphate slag. Additionally or alternatively, the agricultural blend is delivered to soil, is a mineral soil amendment, is a soil conditioner, is a liming agent, is an additive to increase soil pH, is an additive to decrease metal toxicity, or a combination thereof.

Abstract: The disclosure relates generally to mold compositions and methods of molding and the articles so molded. More specifically, the disclosure relates to mold compositions and methods for casting titanium-containing articles, and the titanium-containing articles so molded.

Abstract: Methods and compositions are provided that related to cementing operations. Methods and compositions that include pumice and/or perlite as a replacement for fly ash.

Abstract: A method of making a rapid setting composition for cement boards is disclosed. Compositions including a hydraulic cement preferably portland cement, an alkali metal citrate such as tripotassium citrate, and a phosphate such as sodium trimetaphosphate, with optional gypsum, and no alkanolamine accelerant, and no fly ash based cement. An interaction between the alkali metal citrate and the phosphate increases the effectiveness of accelerating reactions of the portland cement without need for an alkanolamine accelerant, even in the presence of gypsum. This allows unexpected quick setting and increased early-age compressive strength without shrinkage in the cement board compositions.

Abstract: Compositions of, methods of making, and methods of using alkaline earth phosphate bone cements are disclosed. A bone cement composition includes a powder comprising a basic source of calcium, magnesium, or strontium, a setting solution comprising H3PO4 and a buffer, and a biocompatible polymer that is incorporated into the setting solution. The powder is mixed with the setting solution to form a bone cement paste that either (a) sets into a hardened mass, or (b) is irradiated with electromagnetic radiation to form dry powders, the dry powders then being mixed with a second setting solution to form a radiation-assisted bone cement paste that sets into a hardened mass.

Abstract: Provided are an additive for skim coat mortar and a skim coat mortar composition including the same, and the additive is a blend of cellulose ether having hydroxyalkylalkyl cellulose cross-linked with an aldehyde compound and hydroxyalkyl cellulose cross-linked with an aldehyde compound. By applying the additive to a skim coat mortar composition, it is possible to improve workability, surface luster, and a creamy property while maintaining a water retention property.

Abstract: A calcium phosphate composition comprising tetracalcium phosphate particles (A), calcium hydrogen phosphate particles (B) and at least one kind of inorganic particles (C) selected from silica particles or titania particles, wherein the mixing ratio (A/B) of (A) to (B) is from 45/55 to 55/45 in molar ratio, the inorganic particles (C) have an average particle diameter of from 0.002 to 0.5 ?m, and the inorganic particles (C) are contained in an amount of 0.1 to 20 parts by weight based on 100 parts by weight of (A) and (B) in total. Thereby provided is a calcium phosphate composition such that when it is used as a material for bone repair, a formed bone has high mechanical strength and a high bone replacement rate is achieved.

Abstract: The group of inventions relates to the refractory materials industry, in particular to the production of refractory high-strength nonconductive articles of corundum and silicon carbide concretes on an aluminophosphate binder. The objective of the proposed group of inventions is to provide shaped thermoinsulative and thermoconductive concretes based on an aluminophosphate binder with high strength characteristics, enabling the concretes to be used as building and construction materials operating at high temperatures. According to the first variant, the thermoinsulative concrete based on an aluminophosphate binder includes a phosphate binder and a mixture, wherein orthophosphoric acid is used in a concentration of 65-75% as phosphate binder and a mixture of different fractions of 25A grade electrocorundum is used as the mixture.

Abstract: Refrigerated hydraulic cement compositions comprise a mixture of (a) ?-tricalcium phosphate powder, (b) monocalcium phosphate comprising monocalcium phosphate anhydrous (MCPA), monocalcium phosphate monohydrate (MCPM), or a combination thereof, wherein a 0.1 g/ml saturated aqueous solution of the monocalcium phosphate has a pH less than 3.0, (c) non-aqueous water-miscible liquid, and (d) an aqueous hydrating liquid. The aqueous hydrating liquid is included in an amount of about 1-50 volume percent, based on the combined volume of the non-aqueous water-miscible liquid and the aqueous hydration liquid, and the refrigerated hydraulic cement composition is storage stable for greater than one day, without setting. Methods of forming hardened cements in vivo and/or for forming implants for use in vivo employ the hydraulic cement compositions.

Abstract: There is provide a solid cement reactant comprising a dehydrated magnesium phosphate, and/or an amorphous or partially amorphous magnesium phosphate, and/or Farringtonite.

Abstract: A mixture suitable for use in forming a magnesium silico-phosphate cement is disclosed. The mixture comprises particles of MgO at least partially coated with an additive adapted to alter the setting time of said cement cast; a phosphate salt or acid chosen that will provide a binder product characterized by the empirical chemical formula MMgPO4.6H2O; and an aggregate phase chosen from the group containing (a) CaSiO3, (b) MgSiO3, (c) SiO2, (d) fly ash, (e) sea sand, and (f) any combination thereof. Coating the MgO particles provides better control of the alteration of the setting time and better physical properties of the set cement. Methods for making the mixture and for preparing a cement cast based on the mixture are also disclosed.

Abstract: A low-water-content castable composition produces cast products with an increased modulus of rupture, an increased cold crushing strength, and decreased porosity. The composition employs closed fractions of constituent particles with specified populations and specified gaps in the particle size distribution to produce these properties. The composition is suitable for refractory applications.

Abstract: Non-aqueous hydraulic cement compositions comprise a non-aqueous mixture of a powder composition and a non-aqueous water-miscible liquid. In one embodiment, powder composition is a Brushite or Monetite-forming calcium phosphate powder composition. In another embodiment, the powder composition comprises porous ?-tricalcium phosphate (?-TCP) granules and at least one additional calcium phosphate powder. In another embodiment, the powder composition comprises calcium silicate powder. In a further embodiment, the powder composition comprises calcium aluminate powder. In another embodiment, the powder composition is a cement composition and comprises nanopowders having a grain size of less than 1 micron. Hardened cements are formed from such hydraulic cement compositions, and methods of producing hardened cements, kits, and articles of manufacture employ such hydraulic cement compositions.

Abstract: Rapid setting high strength calcium phosphate cements and methods of using the same are provided. Aspects of the cements include fine and coarse calcium phosphate particulate reactants and a cyclodextrin which, upon combination with a setting fluid, produce a flowable composition that rapidly sets into a high strength product. The flowable compositions find use in a variety of different applications, including the repair of hard tissue defects, e.g., bone defects such as fractures.

Abstract: The present invention provides a bone cement formula having a powder component and a setting liquid component, wherein the powder component includes a calcium sulfate source and a calcium phosphate source with a weight ratio of the calcium sulfate source less than 65%, based on the total weight of the calcium sulfate source and the calcium phosphate source, and the setting liquid component comprises ammonium ion (NH4+) in a concentration of about 0.5 M to 4 M, wherein the calcium phosphate source includes tetracalcium phosphate (TTCP) and dicalcium phosphate in a molar ratio of TTCP to dicalcium phosphate of about 0.5 to about 2.5, and the calcium sulfate source is calcium sulfate hemihydrate (CSH), calcium sulfate dehydrate (CSD), or anhydrous calcium sulfate.

Abstract: The present disclosure provides improved water-repellent admixtures for cementitious materials. The water-repellent admixtures are incorporated during masonry processing to improve the water resistance of the final product. Solid water-repellent admixtures may be conveniently incorporated into pre-blended dry mortar mixes. In some variations, a pre-blended dry mortar mix comprises a cementitious material, an aggregate, and a dry water-repellent admixture, wherein the water-repellent admixture contains one or more materials selected from the group consisting of silanes, siloxanes, free fatty acids, fatty acid derivatives, particulated polymers, and particulated copolymers, and wherein the water-repellent admixture is present in the pre-blended dry mortar mix in a dosage from about 0.01% to about 1.00% by weight of the pre-blended dry mortar mix.

Abstract: A calcium phosphate cement composition kit comprising (A) a powdery agent comprising 100 parts by mass of calcium phosphate powder, and 5-50 parts by mass of a powdery apatite/collagen composite, and (B) an aqueous blending liquid; a paste-like mixture being obtained by blending the powdery agent with the aqueous blending liquid, in such a proportion that the aqueous blending liquid is 15-50 parts by mass per the total amount (100 parts by mass) of the calcium phosphate powder and the powdery apatite/collagen composite, and filled in a predetermined prosthetic site in a human body to form a hardened calcium phosphate/collagen composite.

Abstract: Calcium-strontium-hydroxyphosphate (strontium-apatite-) cement preparations are described, comprising a powder mixture, which contains molar quantities of the components calcium (Ca), strontium (Sr) and phosphate (P) in the mixture in the ranges 1.00<Ca/P?1.50 and 0<Sr/P<1.5, together with an alkali salt or an ammonium salt of phosphoric acid, and with water and/or an aqueous solution. The powder mixture particularly contains, as the Ca-component, Ca3(PO4)2 (TCP), and as the Sr-component SrHPO4 and/or Sr3(PO4)2 and optionally additional SrCO3. As the aqueous mixing solution for the formation of the strontium-apatite cement, an aqueous solution of an alkali salt or an ammonium salt of the phosphoric acid is suitable.

Abstract: Non-aqueous hydraulic cement compositions comprise a non-aqueous mixture of a powder composition and a non-aqueous water-miscible liquid. In one embodiment, powder composition is a Brushite or Monetite-forming calcium phosphate powder composition. In another embodiment, the powder composition comprises porous ?-tricalcium phosphate (?-TCP) granules and at least one additional calcium phosphate powder. In another embodiment, the powder composition comprises calcium silicate powder. In a further embodiment, the powder composition comprises calcium aluminate powder. In another embodiment, the powder composition is a cement composition and comprises nanopowders having a grain size of less than 1 micron. Hardened cements are formed from such hydraulic cement compositions, and methods of producing hardened cements, kits, and articles of manufacture employ such hydraulic cement compositions.

Abstract: Magnesium phosphate cement binder systems and method for providing magnesium phosphate cements are described. In an embodiment, a magnesium phosphate cement binder system may include magnesium oxide that has been calcined at a temperature of between about 900° F. to about 1800° F. The magnesium phosphate cement binder system may also include a phosphate material. Other formulations, compositions, and methods are also described.

Abstract: Rapid setting high strength calcium phosphate cements and methods of using the same are provided. Aspects of the cements include fine and coarse calcium phosphate particulate reactants and a cyclodextrin which, upon combination with a setting fluid, produce a flowable composition that rapidly sets into a high strength product. The flowable compositions find use in a variety of different applications, including the repair of hard tissue defects, e.g., bone defects such as fractures.

Abstract: A mixture for making a high strength phosphate cement includes monopotassium phosphate, a Group IIA metal oxide in amounts of about 20 to about 100 parts per 100 parts of the monopotassium phosphate and monocalcium orthophosphate in amounts of from about 3 to about 30 parts per 100 parts of the monopotassium phosphate. Products made from the phosphate cement have a pH of less than about 9 and the product develops a compressive strength greater than 2000 psi in 24 hours.

Abstract: Well cement compositions comprise water, an inorganic cement and one or more fillers having a thermal expansion coefficient (CTE) that is lower than about 3×10?6/° C. The presence of low-CTE fillers may reduce cement-sheath shrinkage when the well temperature falls during stimulation treatments, cyclic steam injection or when the well temperature reaches equilibrium at the top of a long casing string.

Abstract: A cement mix for preparation of a magnesium silico-phosphate cement (MSPC) with an altered hardening rate is provided. The cement mix comprises on the order of 1% of an [MF6]n? salt or acid. Upon addition of water, the mix produces a final set cement that has similar physical properties to those of a cement prepared from a mix lacking the additive, but with a significantly altered setting time. In some embodiments of the invention, the additive is provided in the form of a coating for the MgO component of the mix. In preferred embodiments, H2TiF6, Na2TiF6 and/or K2TiF6 are used as retarders, while K3AlF6 is used as an accelerant. Other embodiments use M?nMF6 compounds wherein M? is an alkali metal, an alkaline earth metal, or H, and M is chosen from inter alia Ti (n=2), Zr (n=2), P (n=1), Al (n=3), and Sb (n=1).

Abstract: An inorganic board contains, in a solid content ratio, 30 to 70 mass % of hydraulic material, 5 to 15 mass % of reinforcing fiber, and 1 to 30 mass % of wollastonite having a wet volume (after being allowed to stand for 30 minutes) of 15 to 45 ml. Also, a method includes: step of producing a slurry containing hydraulic material, reinforcing fiber, and wollastonite; step of producing a sheet by dehydrating the slurry; and step of pressing and curing the sheet; wherein, in the step of producing a slurry, a composition of the slurry is set so as to contain, in a solid content ratio, 30 to 70 mass % of hydraulic material, 5 to 15 mass % of reinforcing fiber, and 1 to 30 mass % of wollastonite having a wet volume (after being allowed to stand for 30 minutes) of 15 to 45 ml.

Abstract: The invention relates to additives for hydraulic binders and systems produced from them, such as concrete and mortar. In particular, the present invention relates to a setting and hardening accelerator for hydraulic binders produced by means of reaction of a calcium compound CV with a silicon compound SV and addition of a phosphonic acid derivative, as well as its production.

Abstract: A non-aqueous hydraulic cement composition comprises a non-aqueous mixture of (a) ?-tricalcium phosphate powder, (b) monocalcium phosphate powder, and (c) non-aqueous water-miscible liquid, wherein (i) at least about 90% of the monocalcium phosphate powder has a grain size in a range of about 200-600 ?m and the powder (weight) to liquid (volume) ratio is about 2.5-5.5, (ii) at least about 90% of the monocalcium phosphate powder has a grain size in a range of about 1-400 ?m and the powder (weight) to liquid (volume) ratio is about 2-5, or (iii) at least about 90% of the monocalcium phosphate powder has a grain size in a range of about 1-600 ?m and the powder (weight) to liquid (volume) ratio is about 2.5-5.5. Methods, hardened cements, articles of manufacture and kits employ such compositions.

Abstract: A method of producing an injectable calcium phosphate paste by a process in which calcium phosphate precursors are mixed with the setting fluids to form a self-hardened apatite cement is disclosed. The produced apatite cement is biocompatible, bioactive and biodegradable in the body. The pH value of said apatite cement is approximately 7 with compressive strength between 10-30 MPa and the setting process will not generate.temperature >37° C. The self-hardened apatite (SHA) cement is found to be bioresorbable and can be used for bone fillers, fixation of broken bones or artificial joints in human and also appropriate for use as a delivery vehicle.

Abstract: Embodiments of the present invention provide cellular phosphate bodies formed using specialized steps to ensure a specific strength range, and specifically a compressive strength less than 100 pounds per square inch. Further embodiments relate to uses for various phosphate ceramics as vehicle arresting systems.

Abstract: A cement mix for preparation of a magnesium silico-phosphate cement (MSPC) with an altered hardening rate is provided. The cement mix comprises on the order of 1% of an [MF6]n? salt or acid. Upon addition of water, the mix produces a final set cement that has similar physical properties to those of a cement prepared from a mix lacking the additive, but with a significantly altered setting time. In some embodiments of the invention, the additive is provided in the form of a coating for the MgO component of the mix. In preferred embodiments, H2TiF6, Na2TiF6 and/or K2TiF6 are used as retarders, while K3AlF6 is used as an accelerant. Other embodiments use M?nMF6 compounds wherein M? is an alkali metal, an alkaline earth metal, or H, and M is chosen from inter alia Ti (n=2), Zr (n=2), P (n=1), Al (n=3), and Sb (n=1).

Abstract: A process for the preparation of the healing agent in cement-based materials and structures, wherein said healing agent comprises organic compounds and/or bacteria-loaded porous particles, which porous particles comprise expanded clay- or sintered fly-ash. Furthermore, said porous particles are intact spheres, broken or crushed particles derived from said intact spheres, having a specific density between 0.4 and 2 g cm?3.

Abstract: Bone graft compositions for repairing bone defects, which are characterized by a chemical composition of cementitious, non-cementitious, highly-resorbable and poorly-resorbable particulate substances, and further characterized by a specific particle size distribution that includes two or more different ranges of particle size, are disclosed. Further disclosed are articles of manufacturing and unit dosage forms containing the bone graft compositions, methods of repairing bone defects utilizing the bone graft compositions, and processes of preparing the same. Also provided are applicators for applying flowable mixtures formed by mixing a dry composition and a liquid carrier, which are particularly useful for preparing and applying bone graft compositions, as well as methods of using same.

Abstract: A hydraulic cement composition comprises a mixture of (a) a cement powder composition which is soluble or partly soluble in water, (b) a non-aqueous water-miscible liquid, and (c) an aqueous hydration liquid. Methods of producing a hardened cement, hardened cements, kits, and articles of manufacture employ such compositions.

Abstract: A method is provided for advantageously altering the rate of hardening of a magnesium silico-phosphate cement (MSPC). Addition of on the order of 1% of an [MF6]n? salt or acid to an MSPC, obtained by adding the salt or acid either directly to the dry mix or to the water used to effect hydraulic hardening of the cement, significantly alters the hardening rate without adversely affecting the physical properties of the final set cement. In preferred embodiments, Na2TiF6 and/or K2TiF6 are used as retardants, while K3AlF6 is used as an accelerant. Other embodiments use M?n-MF6 compounds wherein M? is an alkali metal, an alkaline earth metal, or H, and M is chosen from inter alia Ti (n=2), Zr (n=2), Si (n=2), P (n=1), Al (n=3), and Sb (n=1).

Abstract: An article of manufacture including reinforcement material embedded in a phosphate cement composition is provided. The phosphate cement composition includes about 10 to 40 percent by weight calcium or magnesium oxide, about 10 to 40 percent by weight acid phosphate, and about 10 to 50 percent by weight vermiculite or perlite or mixture thereof.

Abstract: This study reports in vitro and in vivo properties of fluorapatite (FA)-forming calcium phosphate cements (CPCs). Experimental cements contained from (0 to 3.1) mass % of F, corresponding to presence of FA at levels of approximately (0 to 87) mass %. The crystallinity of the apatitic cement product increased greatly with the FA content. When implanted subcutaneously in rats, the in vivo resorption rate decreased significantly with increasing FA content. The cement with the highest FA content was not resorbed in soft tissue, making it biocompatible and bioinert CPC. These bioinert CPCs are candidates for use in useful applications where slow or no resorption of the implant is required to achieve the desired clinical outcome.

Abstract: A phosphate cement composition is provided. The cement composition comprises about 10 to 40 percent by weight calcium or magnesium oxide, about 10 to 40 percent by weight acid phosphate, and about 10 to 50 percent by weight vermiculite or perlite or mixture thereof.

Abstract: Compositions and methods of their use to adhere a variety of materials together are disclosed herein. The compositions include at least tetra calcium phosphate, an effective amount of a compound that is structurally similar to phosphoserine, and can be mixed with an aqueous solution. The compositions provide adhesive and cohesive strength in both wet and dry environments and exhibit significant bond strength upon curing.

Abstract: Methods and a kit. A cement forming method includes nucleating an acidic metallophosphate reaction mixture with first particles, resulting in forming a settable metallophosphate cement from the acidic metallophosphate reaction mixture. The first particles include a first metal oxide. Each particle of the first particles independently have a particle size in a range from about 15 microns to about 450 microns. A method for applying cement includes seeding a solution with particles, resulting in forming a settable cement from the solution. The particles have a size in a range from about 15 microns to about 450 microns. The solution includes a first metal oxide reacting with phosphate. The settable cement is applied to a substrate. A cement application kit is also described.

Abstract: An application for a pre-mixed mortar, stucco or masonry composition includes a approximately 75% sand and 25% of a light-weight cement mix comprising a cement (either Portland cement or hydraulic cement), fly ash, sodium tall oil, sodium stearate, sodium C14-16 Alpha Olefin, linear alkyl benzene; and silicon dioxide.

Abstract: The present invention provides a reinforced calcium phosphate cement, comprising a calcium phosphate cement and a reinforcing polymeric material.

Abstract: Methods for preparing a tricalcium phosphate coarse particle composition are provided. Aspects of the methods include converting an initial tricalcium phosphate particulate composition to hydroxyapatite, sintering the resultant hydroxyapatite to produce a second tricalcium phosphate composition and then mechanically manipulating the second tricalcium phosphate composition to produce a tricalcium phosphate coarse particle composition. The subject methods and compositions produced thereby find use in a variety of applications.

Abstract: The invention relates to an unshaped refractory material comprising a refractory base component and a binder component, the binder component comprising, related to the refractory material, an acidic component of the group comprising an acid, salt of an acid, ester of an acid, salt and ester of an acid as phosphate, sulfate or carbonate, in an amount of ?1.5 wt.-% and ?6 wt.-%, and a basic component of the group comprising: base, urotropin, calcium oxide, calcium hydroxide, magnesium oxide, caustic MgO, sodium hydroxide, potassium hydroxide, magnesium hydroxide, in an amount of ?1 wt.-% and ?4 wt.-%, wherein said material receives an earth-moist, crumbly consistency by addition of 1 to 5 wt.-% of water and which solidifies after an exothermic reaction of the binder component.