摘要:
The invention provides hydraulically setting sealing composition based on a) a hydraulically setting compound out of the group comprising high-alumina cement, ordinary portland cement, blast furnace slag, b) protective-colloide stabilized polymer of one or more ethylenically unsaturated monomers in form of an aqueous polymer dispersion or a water-redispersible polymer powder, and c) one or more fillers.
摘要:
The invention relates to gypsum-containing construction material compounds, containing gypsum, if necessary one or more polymers, if necessary one or more aggregates, and if necessary one or more additives, characterised in that the gypsum-containing construction material compounds contain one or more types of cement and one or more types of pozzolana.
摘要:
A process for preparing a polymer in the form of an aqueous dispersion or a water-redispersible powder includes free-radically initiated heterophase polymerization of one or more ethylenically unsaturated monomers and optionally subsequent drying of the polymer dispersions obtained, wherein the polymerization is performed in a jet loop reactor.
摘要:
A variety of methods and compositions are disclosed, including, in one embodiment, a method of cementing comprising: providing an aqueous dispersion comprising deagglomerated inorganic nanotubes and water; preparing a cement composition using the aqueous dispersion; introducing the cement composition into a subterranean formation; and allowing the cement composition to set. Another method comprises a method of cementing comprising: providing an ultrasonicated aqueous dispersion comprising deagglomerated nanoparticles, a dispersing agent, and water; preparing a cement composition using the aqueous dispersion; introducing the cement composition into is subterranean formation; and allowing the cement composition to set.
摘要:
A joint compound with improved crack resistance is formed by combining water, a filler such as calcium carbonate, a latex emulsion binder, a thickening system such as methylhydroxyethyl cellulose, and nanocrystalline cellulose. The nanocrystalline cellulose is provided in an amount effective to reduce the crack formation during drying.
摘要:
A method of manufacturing a water-resistant gypsum product including forming an aqueous mixture of gypsum, water and a wax mixture, wherein the wax mixture includes a hydrocarbon wax, and a substitute material selected from the group consisting of (a) an asphaltite, (b) a polyolefin homopolymer, (c) a polyolefin copolymer, and (d) combinations thereof; and forming the mixture into a structure, and drying the structure while permitting hydration of the gypsum to form a gypsum product.
摘要:
At least one of these or other problems is reduced using a building material that is uniquely identifiable. A method of making an identifiable gypsum-based building product includes selecting a tagging material occurring naturally in a component of the building material and choosing a carrier substance having a high concentration of the tagging material. By selecting an amount of the carrier substance and adding it to the building material, a building product having a unique product characteristic is created. In a second embodiment of the invention, a second tagging material is combined with the first tagging material to create a unique product. In yet another embodiment of the invention, a supplemental amount of the tagging material is added to the gypsum-based composition in addition to the carrier substance. Some tagging materials are useful in a gypsum-based composition to produce a visual confirmation of the presence of the tagging material.
摘要:
Inorganic fiber paper includes first biosoluble inorganic fibers having an average fiber diameter of 3 to 7 μm, second biosoluble inorganic fibers having an average fiber diameter of 2 to 3 μm, and a binder, the average fiber diameter of the second biosoluble inorganic fibers being smaller than that of the first biosoluble inorganic fibers.
摘要:
A paving material for filling gaps between paving blocks or the like, the paving material comprising a powdered or granulated mixture of: inert particulate; a water-soluble resin formable from a polymerisation reaction between formaldehyde and an at least difunctional nucleophile; and a water-soluble acid. The paving material is filled into gaps between blocks and then liquid water is applied thereto, or the sand is exposed to ambient humidity (gaseous water). Upon contact with the water, the resin coats the sand and then sets hard, thereby stabilising the block paving.
摘要:
A roof sloping compound for creating an auxiliary slope over a wide variety of roof membranes and substrates. The compound includes a dry mixture of aggregate, cement and a redispersible dry polymer adapted to be mixed with water to define a substantially self-leveling consistency enabling the compound to be readily screeded into place in a desired thickness. The aggregate comprises dolomite or limestone and the redispersible dry polymer can comprise a binder based on a copolymer of ethylene vinyl acetate. In a lightweight embodiment of the compound, the aggregate includes lightweight fillers comprising perlite and low density glass granules and a superplasticizer is added to the dry mixture to reduce water demand.