Entries |
Document | Title | Date |
20090209682 | Use of an organic additve for producing porous concrete - In order to produce porous concrete, the use of an organic additive with water-reducing, dispersing and/or flowability-increasing properties is provided. This additive is at least one representative of the series of polycondensation products based on naphthalinsulfonic acids or alkylnaphthalinsulfonic acids, melamine-formaldehyde resins containing sulfonic acid groups, and copolymers based on unsaturated mono- or dicarboxylic acid derivatives and on oxyalkylene glycol-alkenyl ethers. This additive is preferably admixed to a non-foamed and, in particular, mixing water-free porous concrete base mix containing lime, a hydraulic binder, preferably cement and sand, whereby quantities between 0.01 and 10% by weight are considered as preferred quantities. By using the additive in the aforementioned manner, the method for producing porous concrete can be carried out using distinctly less energy and thus more cost-effectively without negatively influencing the typical properties of porous concrete products. | 08-20-2009 |
20090258970 | NOVEL CASTOR OIL-BASED POLYOL EMULSIONS - A polyol emulsion of castor oil and monoepoxides is combined with methylenediphenyl diisocyanate (MDI) and cement to produce a polymer cement. | 10-15-2009 |
20090298972 | Formulation for Obtaining a Translucent Concrete Mixture - A formulation for obtaining a translucent concrete mixture comprising a mixture of polycarbonate and epoxy matrices, as well as glass fibres, optical fibres, colloidal silica, silica and Portland cement. The invention has greater mechanical strength properties than those of a standard concrete, with lower density and mechanical characteristics that enable same to be used in both a structural and architectonic manner. The formulation used to obtain the translucent concrete mixture comprises a type of concrete that is different from those currently available, which combines the advantages of existing concretes with translucency. | 12-03-2009 |
20090298973 | Cement Admixture and Cement Composition Using Thereof - A cement admixture for concrete using a polycarboxylate based water reducing agent that can produce light concrete with little slump loss and good workability that prevents dragging and the like and having no material separation, and a cement composition using the cement admixture are provided. | 12-03-2009 |
20090306249 | CEMENTITIOUS COMPOSITES - A method of improving the stress strain characteristics, the ductility, the energy absorbing characteristics, the fractal roughness and the material roughness of a cementitious mix includes adding at least 1%, by weight of the total weight of the cementitious mix of poly(vinyl butyrate) in addition to a reinforcing agent, preferably poly(vinyl alcohol). In a preferred embodiment, the amount of poly(vinyl butyrate) is about 40% to about 50%, by weight. This provides the optimum levels of performance of the characteristics listed above. | 12-10-2009 |
20090318589 | Additive composition for mortars, cements and joint compounds and cementitious compositions made therefrom - An additive composition for mortars, exterior insulation finish systems, self-leveling compounds and joint compounds is disclosed. The additive composition contains a nitrogen-containing polymer and a reactive agent capable of forming a crosslinking reaction with the nitrogen-containing polymer. Small amounts of the additive composition contained in a product cannot only increase one or more properties of the product but can also minimize the use of redispersible polymers in the product. | 12-24-2009 |
20100029808 | PIGMENTABLE ASPHALT BINDER COMPOSITION - The present invention relates to the preparation of a pigmentable asphalt binder composition obtained from petroleum- and shale-refining streams, having a low content of asphaltenes, aromatic diluents of high aromaticity, polymers and inorganic pigments, obtaining a coloured product. The composition of the present invention is employed in paving, permitting embellishment of roads, greater light, reflection and reduction in coating temperature and in addition greater resistance to permanent deformation due to its excellent temperature susceptibility and higher softening point. | 02-04-2010 |
20100152332 | Cementitious Materials - The present invention relates to cementitious materials, which exhibit a hydrophobic character, and to a process for making cementitious materials hydrophobic, and to a granulated additive for rendering cementitious material hydrophobic. An emulsifier for the organosilicon component is deposited on the particulate carrier together with the organosilicon component and the binder. The hydrophobing agent permits to impart instantaneous hydrophobicity to cementitious materials. | 06-17-2010 |
20100160496 | ACRYLIC ACID ESTER COPOLYMER COMPOSITION AND REDISPERSIBLE POWDERS - The present invention provides an acrylic acid ester copolymer emulsion composition, and redispersible powders made therefrom. The acrylic acid ester copolymer emulsion composition comprises polyvinyl alcohol having a degree of saponification of 85 mol % or more, and an average degree of polymerization of 300 to 1400; hydrophilic ethylenic unsaturated monomers having a water solubility of 1% or more; hydrophobic ethylenic unsaturated monomers having a water solubility of less than 1%; and a lipophilic initiator. The acrylic acid ester copolymer composition according to the present invention has excellent polymerization stability, and improved water resistance, alkali resistance, and fluidity, and the redispersible powders prepared by a spray-dry of the acrylic acid ester copolymer composition have improved water redispersibility, and thus, can be used in various fields such as an additive to a hydraulic material, a powder paint, and an adhesive. | 06-24-2010 |
20100168281 | Spalling-Preventing Composite Material Composed of Fiber and Powder Having Different Diameters and Melting Points, and High-Strength Refractory Concrete Comprising the Same - Disclosed herein are a spalling-preventing composite material composed of fiber and powder, which have different diameters and melting points so as to be capable of realizing the effect of preventing spalling of high-strength concrete and the effect of improving the fluidity of concrete, and a high-strength refractory concrete comprising the spalling-preventing material. The composite material for preventing spalling of high-strength concrete is composed of powder and fiber at 1:1-3, wherein the powder is a polymer powder having a diameter of 0.10-0.5 mm and a melting point of 110-150° C., and the fiber is a conjugate fiber including a first fiber having a diameter of 0.05-0.10 mm, a length of 5-25 mm and a melting point of 150-190° C., and a second fiber having a diameter of 0.01-0.05 mm, a length of 5-25 mm and a melting point of 190-250° C., the first fiber being a polypropylene fiber, and the second fiber being a nylon fiber or a polyvinyl alcohol fiber. | 07-01-2010 |
20100222457 | Cementitious Veneer and Laminate Material Incorporating Reinforcing Fibers - A cementitious veneer and laminate composition is provided. The cementitious laminate composition includes a substrate, a primer layer applied to the substrate, the primer layer comprising a mixture of polyvinyl alcohol catalyst, Portland cement, and sand; and a cementitious veneer layer applied to the primer layer, the cementitious veneer layer comprising a mixture of magnesium sulfate, filler, magnesium oxide, gypsum cement or bassanite, cellulose ethers, and polyvinyl alcohol catalyst. The polyvinyl alcohol catalyst comprises a mixture of polyvinyl alcohol fibers dissolved in water and mixed with butylene carbonate. The veneer layer is applied to the substrate and primer layer by means including spraying and manual spreading, and can be ornamentally manipulated either before or after curing of the veneer layer. The veneer composition can be formed into laminated tiles or panels for use in building applications. | 09-02-2010 |
20100286312 | Amine Sacrificial Agents and Methods and Products Using Same - A method of producing cementitious mixtures containing fly ash as one of the cementitious components, under air entrainment conditions is described. The method involves forming a mixture comprising water, cement, fly ash, optionally other cementitious materials, aggregate, conventional chemical admixtures, and an air entrainment agent and agitating the mixture to entrain air therein. Additionally, at least one amine sacrificial agent is included in the mixture. The cementitious mixtures and hardened concretes resulting from the method and fly ash treated with sacrificial agent, or air entrainment agent/sacrificial agent combinations, are also described. | 11-11-2010 |
20110003915 | LIGHTWEIGHT STRUCTURAL CONCRETE PROVIDED WITH VARIOUS WOOD PROPERTIES - A lightweight structural concrete with screw-ability and nail-ability similar to wood is composed of a non-structural and ultra lightweight aggregate such as expanded perlite or a combination of expanded perlite and polystyrene beads of a particular size distribution and volume amount, entrained air cells of another specific size distribution and volume amount, and dense cementitious composition of a cement binder, a fine grade structural filler no larger than concrete sand grade, a pozzolan, and optional micro-fibers for reinforcement. This structural concrete matrix is optimized to hold 13 gauge T-nails and bugle head wood screws with thread ranging from 8 to 11 threads per inch and diameter of 0.10″ to 0.137″. The resulting concrete will have consistent screw-ability and nail-ability similar to that of wood. | 01-06-2011 |
20110160349 | WATER-REDUCED HYDRAULICALLY SETTING COMPOSITIONS WITH TEMPORALLY EXTENDED FLOW CAPABILITY - A polymer P for prolonging the flowability of water-reduced aqueous hydraulically setting compositions, and a method for prolonging the flowability of water-reduced aqueous hydraulically setting compositions. | 06-30-2011 |
20110196070 | HYDROPHOBING AGENT - The present invention concerns a process to hydrophobize mortars, characterized in that a dry mortar is mixed with water, applied onto a substrate and allowed to dry, the dry mortar being preferably a gypsum dry mortar and/or containing no or less than about 5 wt. % of a minerally setting binder, calculated on the dry content of the dry mortar, wherein at least one solid hydrophobizing material is added before, during and/or after mixing of the dry mortar with water and/or the hydrophobizing material is mixed with water and applied onto the dried mortar, wherein the hydrophobizing material is a hydrophobizing agent containing a silane, a carrier, and a catalyst, and/or a silane composition containing at least a silane and a carrier and a catalyst composition containing at least a catalyst and a carrier, wherein the silane and catalyst compositions are added to the mortar together and/or separately before, during and/or after mixing of the mortar with water, wherein the silane has at least one Si—OR group and R is an organic group, wherein the catalyst is suitable for hydrolyzing the Si—OR bond and/or for condensation of the Si—OH group obtained by hydrolysis, and wherein the hydrophobizing agent, the silane composition and/or the catalyst composition are preferably in the form of a powder, granulate and/or flakes. Claimed in addition are the products obtainable by the above process and water-dispersible, water-redispersible or water-soluble catalyst compositions and hydrophobizing agents suitable for use in the process. | 08-11-2011 |
20110294923 | Polymerization Mixture That Can Be Produced Without Water - The invention relates to a process for the preparation of a polymerization mixture suitable as a dispersant and comprising a copolymer. In the process, a vinyloxyalkylpolyether derivative is reacted with an acid monomer derivative with formation of the copolymer in the presence of a free radical polymerization initiator by free radical polymerization, the free radical polymerization taking place in a medium which contains less than 25% by weight of water and in totality more than 60% by weight of copolymer, vinyloxyalkylpolyether derivative and acid monomer derivative. | 12-01-2011 |
20120016061 | PROCESS TO PREPARE SELF-BINDING PIGMENT PARTICLES IMPLEMENTING ACRYLIC COMB COPOLYMERS WITH HYDROPHOBIC GROUPS AS COUPLING AGENTS, SELF BINDING PIGMENT PARTICLES AND USES THEREOF - The present invention relates to a process to prepare self-binding pigment particles comprising at least one step a) of grinding one or more binders and one or more mineral materials in an aqueous environment to obtain a suspension, characterised in that, prior to and/or during step a), a copolymer is added in the form of an aqueous solution, said copolymer resulting from the polymerisation of: 2.1) at least one anionic monomer that is an alkene; 2.2) at least one oxyalkylated monomer that is an alkene, wherein the oxyalkyl group has a terminal hydrophobic alkyl, aryl, alkyl aryl or aryl alkyl group having 10 to 32 carbon atoms; 2.3) optionally, at least one other monomer that is an acrylic ester, a preferred acrylic ester being ethyl acrylate, and/or an unsaturated amide, a preferred unsaturated amide being acrylamide, as well as to the products obtained by this process, and uses of these products. | 01-19-2012 |
20120041105 | Dispersing Agent Containing Copolymer Mixture - The invention relates to a polymer composition containing 3 to 90% by weight of a copolymer H and 3 to 90% by weight of a copolymer K, the copolymers H and K each having polyether macromonomer structural units and acid monomer structural units, which are present in the copolymers H and K in each case in a molar ratio of 1:20 to 1:1, and at least 20 mol % of all structural units of the copolymer H and at least 25 mol % of all structural units of the copolymer K being present in each case in the form of acid monomer structural units, at least 60 mol % of the polyether macromonomer structural units of the copolymer H being represented by the isoprenol polyether derivative structural units and at least 60 mol % of the polyether macromonomer structural units of the copolymer K being represented by the vinyloxy polyether derivative structural units. | 02-16-2012 |
20120316267 | METHOD FOR PREPARING A HYDRAULIC COMPOSITION - In one embodiment, the present invention includes a method for preparing a hydraulic composition including sand in which clay is present, the method including adding to the sand and clay a cationic polymer having a density of cationic charges which is greater than 0.5 meq/g and an intrinsic viscosity which is less than 1 dl/g, said cationic polymer being present in an amount of from 2-20% by weight based on the amount of clay present, said clay present in an amount of from 0.5-5% by weight of the sand present, and water. | 12-13-2012 |
20130053474 | RESTRAINING EXPANSIVE MORTAR WITH NON-METALLIC FIBERS - Synthetic fibers, such as polypropylene fibers, are mixed in a shrinkage compensating concrete to provide restraint in lieu of conventional steel reinforcement used in a shrinkage compensating concrete. While the synthetic fibers have a low elastic modulus and low strength, they act to restrain expansion of the concrete in the same way that conventional steel rebar does. In addition, only a small amount of the synthetic fibers are needed to restrain the expansion. As a result, shrinkage compensating concrete can be used in more varied applications, and can be provided more quickly, easily and inexpensively. Construction time requirements and expenses of concrete structures are correspondingly reduced. | 02-28-2013 |
20130172450 | DENSITY-MATCHED SUSPENSIONS AND ASSOCIATED METHODS - Of the many compositions and methods provided herein, an example method includes a method of treating a subterranean formation that comprises combining components comprising water and a density-matched suspension to prepare a treatment fluid, wherein the density-matched suspension comprises a suspending liquid and a solid particle suspended in the suspending liquid, and introducing the treatment fluid into a well bore. An example composition includes a suspension that comprises a suspending liquid comprising a hydrophobic liquid, wherein the hydrophobic liquid hydrolyzes when placed in contact with an aqueous fluid to form hydrophilic products, and a solid particle suspended in the suspending liquid, wherein the suspension is a density-matched suspension. | 07-04-2013 |
20140303287 | Self-Healing Composite of Thermoset Polymer and Programmed Super Contraction Fibers - A composition comprising thermoset polymer, shape memory polymer to facilitate macro scale damage closure, and a means for molecular scale healing is disclosed; the composition has the ability to resolve structural defects by a bio-mimetic close-then heal process. In use, the shape memory polymer serves to bring surfaces of a structural defect into approximation, whereafter use of the means for molecular scale healing allowed for movement of the healing means into the defect and thus obtain molecular scale healing. The means for molecular scale healing can be a thermoplastic such as fibers, particles or spheres which are used by heating to a level at or above the thermoplastic's melting point, then cooling of the composition below the melting temperature of the thermoplastic. Compositions of the invention have the ability to not only close macroscopic defects, but also to do so repeatedly even if another wound/damage occurs in a previously healed/repaired area. | 10-09-2014 |
20150031799 | CEMENT AND CONCRETE WITH REINFORCED MATERIAL - Provided are compositions, methods and systems including cementitious compositions and reinforcing materials wherein the cementitious composition comprises a metastable component. | 01-29-2015 |
20150065614 | Functionalized Polyamines For Clay Mitigation - The present invention provides methods and compositions for treating clay-bearing aggregates, particularly those used for construction purposes, whereby inclusion of fines is maximized due to minimization of clay washing which tends to remove such fines, and whereby performance of the aggregate-containing construction material is enhanced. Exemplary methods comprise introducing to clay a water-soluble, functionalized polyamine comprising a water-soluble polyamine formed by reacting an amine compound with an epoxy compound, the polyamine thus reacted being functionalized through the use of certain halide, sulfate, or epoxy compounds. | 03-05-2015 |
20150141552 | METHOD FOR PRODUCING CONCRETE FORMED BODY - A problem is to provide a production method by which a high-strength concrete formed body can be obtained. The problem can be solved by a method for producing a concrete formed body including a defoaming step [1] of holding a concrete composition having a water-cement ratio adjusted to from 14 to 20%, in a reduced pressure atmosphere to obtain a defoamed concrete; a defoaming step [2] of holding a carbon fiber immersed in a cement solution having a water-cement ratio adjusted to 14% or more, in a reduced pressure atmosphere to obtain a defoamed fiber; and a forming step of placing the defoamed concrete and the defoamed fiber within a shuttering, followed by curing to obtain a high-strength concrete formed body. | 05-21-2015 |
20150344366 | POLYMER CEMENT COMPOSITION AND CEMENTING METHOD - To provide a polymer cement composition which, when hardened, is less susceptible to cracking by oil such as petroleum, and a cementing method using it. | 12-03-2015 |
20180022644 | IMPROVED POLYPROPYLENE FIBERS, METHODS FOR PRODUCING THE SAME AND USES THEREOF FOR THE PRODUCTION OF FIBER CEMENT PRODUCTS | 01-25-2018 |
20220135490 | CRACK SELF-HEALING AGENT FOR CEMENT-BASED MATERIALS CAPABLE OF BINDING CORROSIVE IONS IN SEAWATER, AND PREPARATION METHOD THEREOF - Disclosed are a crack self-healing agent for cement-based materials capable of binding corrosive ions in seawater, and a preparation method thereof. A core material of the agent is an active inorganic composite component capable of chemically binding Cl, Mg, and S, a wall layer is polymethyl methacrylate, and an interface improvement layer is a cement layer. A preparation method includes: (1) thoroughly mixing active components capable of binding corrosive ions, and filling a resulting mixture into a direct compression mold; (2) applying a pressure to the direct compression mold and holding the pressure on using a pressing machine, and demolding to obtain a core material body; (3) placing the core material body obtained in a solution of PMMA in acetone for coating, and taking out the core material body and drying; (4) coating a layer of cement before the acetone is completely volatilized to obtain the crack self-healing agent. | 05-05-2022 |