Abstract: In methods of and/or plants for manufacturing cement clinker, the amount of chloride bypass exhaust gas 79 can be substantially decreased, when using previously cooled chloride bypass exhaust gas 81 and/or cooled kiln exhaust gas as coolant for the chloride bypass exhaust gas 39 prior to deducting the chloride bypass exhaust gas 39.

Abstract: A spray dryer absorber (SDA) system used to reduce the concentration of at least one acid compound in a gas utilizes low or no alkali-containing particulate compounds to prevent cementing during operation. The low or no-alkali-containing compounds may be supplied from external sources and/or from a particulate collection device located downstream of the SDA.

Abstract: The invention is directed to the provision of an optical device in which provisions are made to form a gap between an optical waveguide and a substrate without having to form a groove or the like in the substrate and to prevent any stress from being applied to an optical element even when it is heated by a heater for temperature adjustment. More specifically, the invention provides an optical device includes a substrate, an optical element with an optical waveguide formed in a surface thereof that faces the substrate, bonding portions formed on the substrate at positions that oppose each other across the optical waveguide, a heater, formed on at least one of the optical element and the substrate, for heating the optical waveguide, and a micro bump structure formed from a metallic material, wherein the optical element is bonded to the bonding portions via the micro bump structure in such a manner that a gap is formed between the optical waveguide and the substrate.

Abstract: A “green process” and system employing a first operation of electrophoresis in a liquid suspending selected solids to introduce the suspended solid particles as micro- or nano-particles, or both, into pore spaces of a porous non-conductive medium. A second operation uses electro-transport to move ions of solids into small pore spaces inaccessible via electrophoresis alone to grow solids in these smaller pore spaces to a size that may fill them, thus increasing the density and strength of the medium. The process yields a material that has improved strength, reduced porosity, high density and, in select applications, resistance to formation of mildew, mold, fungus and the like. Certain applications also enable decorative colors and florescence to be introduced to the media. Materials made from the process include high strength concrete construction panels, “backer boards,” work surfaces, counter tops, complex decorative configurations, strong thin walled items, and the like.

Abstract: Described herein is the use of a combination of organic additives that is particularly advantageous for the preparation of cementitious compositions having a high conservation of the degree of white, which contain in mass a photocatalyst that is able to oxidize, in the presence of light, air and ambient humidity, pollutant substances present in the environment, the said photocatalyst being, in particular, titanium dioxide prevalently in the form of anatase. The above combination of additives comprises the following: a melamine resin; a cellulose ether; a polymer chosen from among an ethylene polymer, an acrylic polymer, and a terpolymer comprising as co-monomers at least one ester of acrylic acid with an alcohol and at least one ester of vinyl alcohol with a carboxylic acid, or alternatively, an acrylic, styrene or butadiene latex; and a chemically modified starch.

Abstract: Methods for on-site remediation of contaminated natural resources and fabrication of construction products therefrom. A mobile treatment facility is provided at the site of the contaminated natural resources. Contaminated sediment, soil, pulp and/or liquids are obtained from the site and processed on-site to obtain a variety of construction materials, including coarse and fine particulate material, bricks, concrete products, pellets and aggregate material. Coarse, sand-like materials are fabricated from decontaminated clay-based based materials and used in the fabrication of concrete products. Waste streams are combined to optimize their mutually neutralizing properties. Contaminants such as inorganics and heavy metals are immobilized as water-insoluble complexes in the matrix of the resulting products. Organic contaminants are volatilized and/or burned off, and thermochemical reactions of inorganic contaminants are induced, in a high-temperature irradiation treatment.

Abstract: Portland cement particles having the characteristics of slow hardening is oduced by a process of heat treating portland cement particles in the temperature range from 1500.degree. to 3000.degree. C. for from 0.5 to 10 seconds and cooling to obtain particles containing an amorphous, glassy shell as an outside layer.

Abstract: Method and apparatus for making electrically conductive concrete articles ed for electromagnetic shielding, the invention also includes the articles of manufacture formed according to the method. Concrete articles formed according to the method of the invention are reinforced with magnetized metallic fibers, preferably steel fibers, a substantial portion of the fibers contacting nearby fibers to provide electrical continuity through the article. Contact between fibers is enhanced according to the invention by vibration of the concrete/fiber mix during forming of the electrically conductive concrete article.

Abstract: Method for eliminating the dangerous alkali-aggregate reaction in concretes which contain hydrated cement obtained by the alkaline activation of Portland cement. The formation in this concrete of a compound which can generate a soluble alkali aluminate is prevented by reacting a mineral composition by alkaline activation, the said compound consisting of a hydrated alumino-silicate whose Nuclear Magnetic Resonance .sup.27 Al MAS-NMR spectrum shows a resonance at 66.+-.5 ppm corresponding to a (Q.sub.3)(3Si)-type (AlO.sub.4) tetrahedron. The above-mentioned mineral composition contains:a) 100 parts by weight of the said calcium alumino-silicate;b) 10 to 30 parts by weight of powdered synthetic alumino-silicate belonging to the class of silicates whose mineralogical structure is lamellar and whose MAS-NMR for .sup.27 Al has at least one main resonance at 20.+-.5 ppm and/or 50.+-.5 ppm in relation to AlCl.sub.3.c) 0 to 10 parts by weight of a hydrated disilicate Ca(H.sub.3 SiO.sub.4).sub.2 whose (SiO.sub.

Abstract: The present inventions relates to a method for the controlled hardening of cid-setting cements and binders by first providing an acid-setting binder within a selected mold. Mixing with the binder an electrolyte to form a paste or slurry within the mold. Subjecting the paste or slurry mixture to electrolysis for a selected period of time or until the binder is sufficiently hardened whereby a hardened article is produced. Finally, removing the produced article from the mold.