Abstract: A method for preparing iron alloy and a cement material, in the field of solid waste recycling, provides an efficient, synergistic effect between main components of carbon, calcium and heavy metal in municipal solid waste incineration (MSWI) fly ash and main components of iron, aluminum and silicon in red mud, so that the iron alloy and cement material can be readily obtained. By using waste to treat waste and using the complementarity of the components of two waste streams, carbon in the MSWI fly ash may provide a reductant to accelerate an iron mineral in the red mud to reduce into metal iron. With the formation of the metal iron, a siderophile heavy metal element in the MSWI fly ash is also accelerated to enter an iron phase. Meanwhile, the cement material is formed by Al2O3 and SiO2 in the red mud and CaO in the MSWI fly ash.

Abstract: Cellular concrete aggregates sized between 2 and 25 mm and having a bulk density in the dry state of between 200 and 600 kg/m3 enable their agglomeration by a binder for the manufacture of lightweight and insulating concrete or for the manufacture of slabs, screeds, formwork walls or prefabricated parts. A process for manufactures cellular concrete aggregates of at least 2 mm.

Abstract: An oxidation resistant low cement silicon carbide composite material, including a high alumina cement matrix portion in an amount of about 8 weight percent, a high alumina spinel portion in an amount between about 5 weight percent and about 20 weight percent, a silica fume portion in an amount of about 8 percent, a chrome aluminum stainless steel alloy needle additive portion, and a silicon carbide portion in an amount defining a remainder of the composition. The high alumina cement portion contains about 68 weight percent alumina and about 31 weight percent calcia, and the high alumina spinel portion contains about 78 weight percent alumina and about 22 weight percent magnesia.

Abstract: The invention provides novel aerated composite materials that possess excellent physical and performance characteristics of aerated concretes, and methods of production and uses thereof. These composite materials can be readily produced from widely available, low cost raw materials by a process suitable for large-scale production with improved energy consumption, desirable carbon footprint and minimal environmental impact.

Abstract: The invention relates to a building material (M2), which can be produced by combining 30 to 70% by weight of a cement or respectively hydraulic binder, 20 to 80% by weight of water and 0.05 to 15% by weight of a porous and/or pore-forming material; or by combining 10 to 80% by weight of a cement or respectively hydraulic binder, 10 to 80% by weight of a pulverulent and/or granular mineral filler, 20 to 80% by weight of water and 0.05 to 15% by weight of a porous and/or pore-forming material; and in each case by subsequent mixing of the combined components for 1 to 15 minutes. The invention furthermore relates to a building system element (1; 2) with a first section (11; 21) containing particularly compact solid particles distributed in a hardened cement matrix (M1) and fixed thereby, and with a second section (12; 22) containing pores distributed in a hardened cement matrix (M2). This second section (12; 22) can be composed of the building material (M2) according to the invention.

Abstract: A composition comprising a metallic composition, an inorganic oxide-based polymer, and a solvent. A cure product of the metallic composition, inorganic oxide-based polymer, and solvent, the cure product having a network structure, are also disclosed.

Abstract: A copper-based alloy which contains 7.8 to 8.8 mass % of Al, 7.2 to 14.3 mass % of Mn and a remainder made up by Cu and unavoidable impurities, has a largest crystal grain diameter of more than 8 mm, has good shape memory properties, and enables the production of a structural material having a cross-section size suitable for use as a structure body or the like; and a structural material comprising the copper-based alloy. The copper-based alloy may additionally contain at least one element selected from the group consisting of Ni, Co, Fe, Ti, V, Cr, Si, Ge, Nb, Mo, W, Sn, Bi, Sb, Mg, P, Be, Zr, Zn, B, C, S, Ag and a misch metal in the total amount of 0.001 to 5 mass %.

Abstract: A pourable aqueous cement composition is disclosed. The cement composition comprises a hydraulic cement, water and a selectively removable material comprising a plurality of selectively corrodible metal powder particles dispersed within the cement or a nanomatrix powder compact, or a combination thereof. An article, including a downhole article, and more particularly a reconfigurable downhole article is disclosed. The article includes a hydraulic cement, wherein the hydraulic cement has at least partially set into a permanent form. The article also includes a selectively removable material dispersed within the cement, the selectively removable material comprising a plurality of selectively corrodible metal powder particles dispersed within the cement or a nanomatrix powder compact, or a combination thereof, wherein the selectively removable material is configured for removal in response to a predetermined wellbore condition.

Abstract: A metal fiber reinforced composition and its method of fabrication. Metal fibers are created by broaching or shaving metal wool from stock material. The wool is straightened and cut into short lengths. Each of the metal fibers has an average maximum diameter of between 0.005 millimeters and 0.2 millimeters, and a cut length no greater than two-hundred times the average maximum diameter. A volume of a curable composition is provided. The metal fibers are mixed into the curable composition to create a fiber reinforced composition. The fiber reinforced composition is then formed into a selected shape, such as a construction element. The selected shape is then cured. Since the metal fibers are dispersed uniformly throughout the selected shape, curing or re-heating of the selected shape can be facilitated using an induction coil that heats the various metal fibers within the selected shape.

Abstract: Aspects of the invention include methods of contacting carbon dioxide with an aqueous mixture. In practicing methods according to certain embodiments, a subterranean brine may be contacted with carbon dioxide to produce a reaction product, which may or may not be further processed as desired. Also provided are methods in which a brine or minerals are contacted with an aqueous composition. Aspects of the invention further include compositions produced by methods of the invention as well as systems for practicing methods of the invention.

Abstract: The invention relates to an expanded concrete composed of binder-containing mixtures, preferably having binders composed of Portland cement as specified in DIN EN 197 or of mixtures of hydraulic, latent-hydraulic and/or pozzolanic binders, having binders, water with a fraction of 20-60% by mass based on the mass of the binder in the mixture, chemical gas-forming agent, preferably in the form of aluminium powder, at 0.05-0.25% by mass, based on the mass of the binder, for forming mostly air pores in the expanded concrete, wherein the gas-forming agent in the form of a powder forms a mixture of different particle sizes, concrete additives such as in particular microsilica and/or flyash with a fraction of 0.5-25% by mass, based on the mass of the binder, concrete admixtures of mostly liquefying character and at a fraction of 0.

Abstract: The invention relates to a kit of parts consisting of: a) a material for producing a shaped body; b) a metal powder, a powder of a metal alloy, a powder of a pigment having a metallic effect or a powder having a laminar structure, and; c) if needed, of customary additives. The inventive kit of parts can be used to produce shaped bodies, especially in the field of dentistry, which can be excellently detected by optical systems.

Abstract: Of the many methods and compositions provided herein, one method comprises providing a cement composition, wherein the cement composition comprises a cementitious component and an additive comprising a polymer, a phosphorus component, a polyvalent metal ion, an oil-based liquid, and a surfactant; introducing the cement composition into at least a portion of the subterranean formation; and allowing the cement composition to at least partially set therein. Another method provided herein comprises providing a cement composition that comprises a cementitious component and an additive comprising a polymer, a phosphorus component, a polyvalent metal ion, an oil-based liquid, and a surfactant; introducing the cement composition into a void located in a pipe string; and allowing the cement composition to at least partially set therein.

Abstract: 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 cm2/g, (B) 10 to 40 parts by weight of fine particles having a BET specific surface area of 5 to 25 m2/g, and (C) 15 to 55 parts by weight of inorganic particles having a Blaine specific surface area which is 2,500 to 30,000 cm2/g and which is larger than that of the cement. The inorganic particles (C) may comprise 10 to 50 parts by weight of inorganic particles (C1) having a Blaine specific surface area of 5,000 to 30,000 cm2/g and 5 to 35 parts by weight of inorganic particles (C2) having a Blaine specific surface area of 2,500 to 5,000 cm2/g.

Abstract: A mixture of metal fiber concrete based on cement, granular elements and water, comprising metal fibers whose diameter ranges from 1.15 mm to 1.8 mm, wherein the form coefficient thereof is between 35 and 45. The dosing of metal fibers is at least 80 kg/m3. This concrete mixture is particularly adapted to the creation of structural elements such as floor slabs without traditional reinforcements.

Abstract: The present invention provides methods and compounds for the in situ formation in concrete of chloride sequestering compounds that resist corrosion of metals contained within the concrete. These chloride sequestering compounds may include, but are not limited to, compounds having the formula 3CaO.Fe(2-x)AlxO3.Ca(NO2)2.nH2O and 3CaO.Fe(2-x)AlxO3.Ca(NO3)2.nH2O, where x ranges from about 0 to 1.4 and n ranges from about 8 to 24. In one embodiment, at least one Fe-containing additive is introduced into cement, and at least one anion-containing additive is introduced into mixing water. When the cement and mixing water are combined to create fresh concrete, the additives react to form chloride sequestering compounds. In another embodiment, the additives are introduced or mixed directly into fresh concrete that has already been formed, where they react to create chloride-sequestering compounds. “In situ” formation refers to the creation of a chloride sequestering compound within concrete.

Abstract: An interface material comprising a resin mixture and at least one solder material is herein described. The resin material may comprise any suitable resin material, but it is preferred that the resin material be silicone-based comprising one or more compounds such as vinyl silicone, vinyl Q resin, hydride functional siloxane and platinum-vinylsiloxane. The solder material may comprise any suitable solder material, such as indium, silver, copper, aluminum and alloys thereof, silver coated copper, and silver coated aluminum, but it is preferred that the solder material comprise indium or indium-based compounds and/or alloys. The interface material, or polymer solder, has the capability of enhancing heat dissipation in high power semiconductor devices and maintains stable thermal performance. The interface material may be formulated by mixing the components together to produce a paste which may be applied by dispensing methods to any particular surface and cured at room temperature or elevated temperature.

Abstract: The present invention relates to a thickened aqueous solution, or gel solution, for use in providing fiber to a cement composition. Additionally, the present invention relates to a method for adding fibers to cement.

Abstract: A corrosion inhibiting composition for use in reinforced concrete structures, the inhibitor composition reducing the rate of corrosion in metallic reinforcing rods placed within the structures. The composition includes a combination of one or more corrosion inhibiting agents and one or more silica neutralizing agents.

Abstract: The present invention provides methods for resisting corrosion of metal elements in concrete, and associated compounds and structures. Acid mine drainage sludge is used as a source of a precursor compound that reacts with a source of anion to form a chloride-sequestering compound. The precursor compound may have the formula 2Me?(II)O·(Y(2?x),Y?x)O3+qMe?(II)O, where at least one of Y and Y? is present; Y and Y? are different and are independently selected from the group consisting of Al, Fe, Cr, and not present; Me? is a cation and is selected from the group consisting of Ca, Ba, Sr, Mn, and Zn; x is a number ranging from 0 to 2; and q is a number ranging from 0 to 2; and combinations thereof. In a preferred embodiment, the precursor compound has the formula 2CaO(Fe(2?x),Alx)O3+CaO.

Abstract: In some embodiments, alternate sources of aluminum or calcium are provided in various ways including the desired compounds. The further object of the present invention contemplate in situ creation of the compound in interest in fresh concrete and as a slurry which can be employed in remediation of existing concrete structures. A method of resisting corrosion in concrete containing metal elements is provided. It includes introducing into fresh concrete, containing metal elements, at least one compound capable of sequestering chloride ions. The method may also involve employing a compound which is capable of establishing a corrosion resistant oxide layer on the metal reinforcing elements. The invention also includes certain compounds which may be employed in the method as well as concrete structures containing the compounds.

Abstract: A crosslinkable thermal interface material is produced by combining at least one rubber compound, at least one amine resin and at least one thermally conductive filler. This interface material takes on the form of a liquid or “soft gel”. The gel state is brought about through a crosslinking reaction between the at least one rubber compound composition and the at least one amine resin composition. Once the foundation composition that comprises at least one rubber compound, at least one amine resin, and at least one thermally conductive filler has been prepared, the composition must be compared to the needs of the electronic component, vendor, or electronic product to determine if a phase change material and/or at least one solvent is needed to change some of the physical properties of the composition.

Abstract: 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 fiber. The fiber reinforced cementitious material includes (i) cement, (ii) optionally, sand, aggregate, or sand and aggregate, and (iii) chemically treated fibers having a polyvalent cation content of from about 0.1 weight percent to about 5.0 weight percent based on the dry weight of the treated fibers. The present invention further provides for a fiber reinforced cementitious material having a weak acid content of from about 0.5 weight percent to about 10 weight percent based on the dry weight of the treated fibers.

Abstract: The present invention relates to a thickened aqueous solution, or gel solution, for use in providing fiber to a cement composition. Additionally, the present invention relates to a method for mixing fibers with cement.

Abstract: The present invention relates to a thickened aqueous solution, or gel solution, for use in providing fiber to a cement composition. Additionally, the present invention relates to a method for mixing fibers with cement.

Abstract: A concrete in which metallic fibres are dispersed, obtained through mixing with water a composition comprising:

Abstract: A crosslinkable thermal interface material is produced by combining at least one rubber compound, at least one amine resin and at least one thermally conductive filler. This interface material takes on the form of a liquid or “soft gel”. The gel state is brought about through a crosslinking reaction between the at least one rubber compound composition and the at least one amine resin composition. Once the foundation composition that comprises at least one rubber compound, at least one amine resin, and at least one thermally conductive filler has been prepared, the composition must be compared to the needs of the electronic component, vendor, or electronic product to determine if a phase change material is needed to change some of the physical properties of the composition.

Abstract: A method of resisting corrosion in concrete containing metal elements is provided. It includes introducing into fresh concrete, containing metal elements, at least one compound capable of sequestering chloride ions. The method may also involve employing a compound which is capable of establishing a corrosion resistant oxide layer on the metal reinforcing elements. The invention also includes certain compounds which may be employed in the method as well as concrete structures containing the compounds.

Abstract: The present fiber reinforced cellular concrete is produced through a chemical reaction that does not require high heat or pressure ovens (autoclaves). Among its unique features, is the fact that different compression strengths can be obtained by varying the proportion of ingredients and resulting densities. The concrete utilizes a base of a pozzolanic product with aluminum powder, lime, calcium formate, cement, and polypropylene fiber is added, along with water. Expanded shale, clay or slate is added to provide lower shrinkage to the resulting mass reducing cracking. Optionally, sand and compatible reinforcing material can also be added.

Abstract: Described is an interface material composition that includes rubber, phase change material and thermally conductive filler.

Abstract: An ultra-high performance composite concrete, with low cement and fiber content and having good mechanical properties as well as good impacts, shocks and projectile protection properties, includes hydraulic binder, aggregates, an admixture of metal fibers. Particularly, the composite concrete includes 70% to 85% of particles (A) having a particle size distribution which ranges from 0.01 to 3 mm up to particle size distribution which ranges from 0.01 to 0.50 mm; 2% to 10% of particles (B) having particle size of between 0.01 and 1 .mu.m; 3% to 20% of hydraulic binder; 0.1 to 3% of a dispersant or plasticizer; 0.05% to 8.5% of fibers; and, mixing water, wherein the percentages being weight percentages based on the sum of the weights of constituents a) to d).

Abstract: A system is disclosed for inhibiting the corrosion of ferrous and other metals by passivating the metals. The system includes novel buffered compositions which may be applied to metal products for preventing or retarding corrosion and methods for applying the buffered compositions to metal products such that corrosion protection of the products is achieved through passivation. The methods include an in-situ application to existing structures with metal reinforcement as well as applications to metal products during manufacture. Generally, the compositions may be in various forms and comprise a carrier component and one or more pH buffer components. The buffer is selected to retain the proximity of the metal at a pH at which the metal is passive to corrosion. The compositions are environmentally friendly and are capable of replacing chromates which have been traditionally used with zinc and zinc alloys to inhibit corrosion of metals but which are potentially harmful to the environment.

Abstract: A process for recycling household waste, garbage or trash into useful articles including in one preferred embodiment the steps of collecting the waste material, feeding the waste material into a pulverizer to convert the material to a powdery mass, adding water to the mass to form a slurry, adding a binder to the slurry to inhibit bacteriological growth, pouring or otherwise forming the slurry into a useful shape such as a block, or sheet, and allowing the formed shape to air dry under relatively low humidity. The resulting useful article may then be used as a building block, wall board, ceiling tile and so on. In an alternative example, the binder is added directly to the pulverized waste material to produce a useful article such as a flexible roof shingle.

Abstract: A method of environmental cleanup by producing an autoclaved aerated cement building material (termed AAC) by a process that uses the available silica sand and other raw materials in mine tailings, in particular copper mine tailings from porphyry copper mines. The process minimizes the need for processed silica sand and other raw materials, normally used in the production of the AAC building material. The lightweight AAC building material produced from the mine tailings has excellent thermal insulation properties, sound absorption and other desirable construction qualities comparable to AAC building material produced using processed silica sand, i.e. from non-mine tailings raw material sources.

Abstract: Aluminum leafing flakes for expanding grout are adhered to microparticles to distribute the flakes in dry and wet grouts. The flakes have a protective coating sensitive to the alkalinity of dry and wet grouts alkaline. The coated flake carrying microparticles may be blended and stored with dry grouts or used directly with wet grouts as part of a fluidifier for the grout.

Abstract: A method of packaging dry grout involving a novel aluminum product for use in packaged dry grout. Aluminum flakes conventionally used as an expanding agent in a grout fluidifier are coated with a film which has limited sensitivity to the moisture and the alkali (cement) in dry grout and are then blended with the materials (comprising cement ) to be packaged as a dry grout for mixing with water to form a wet grout. The coating used is highly sensitive to the water and/or alkaline nature of the wet grout and readily deteriorates when the dry grout is mixed with water. A coating and binder, e.g., sodium silicate, may be used to coat the aluminum flakes and to adhere the aluminum to micro-particles, such as glassy microspheres, prior to a dry grout blending operation.

Abstract: There is described an additive composition for improving the properties of building materials, the composition comprising hydrochloric acid, aluminum, lime milk, ammonia, and oil in varying amounts and which when mixed with concrete or mortar mix provides a building material having improved properties. A process for making the additive and also for utilizing the same with concrete or mortar mix is also disclosed.

Abstract: Improved cement compositions having greater strength, density, and lesser porosity, than concretes previously known are provided, which are prepared with water which been treated so as to comprise a residual amount of sodium tripolyphosphate. Methods of forming high-strength shaped articles are also provided.