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| Number | Title | Issue Date |
| 6441054 | Air management in cementitious mixtures having plasticizer and a clay-activity modifying agent An exemplary surface active agent admixture composition of the invention comprises (1) a first surface active agent comprising a betaine, an alkyl or aryl or alkylaryl sulfonate, or mixture thereof; and (2) a second surface active agent comprising a nonio... | 08/27/2002 |
| 6146666 | Thiobacillus thiooxidans growth inhibitor A Thiobacillus thiooxidans growth inhibitor containing as the active ingredient at least one substance selected from the group consisting of a tungsten powder and tungsten compounds. Under acidic conditions of pH value of 4 or less, this growth inhibitor ... | 11/14/2000 |
| 5916483 | Additive and a process for inhibiting the corrosion of metals in construction materials and constructions materials containing said additive Additives are disclosed which inhibit the corrosion of metals in construction materials which contain an inorganic binder. The inventive corrosion inhibitors contain a reaction product of amines and acids or they consist of such a reaction product. Said s... | 06/29/1999 |
| 5314755 | Method to reduce scaling due to freezing and thawing in concrete A concrete surface having at least a residual amount of sodium fluorophosphate. A method to reduce scaling due to freezing and thawing is also disclosed. The method comprises contacting the surface of a concrete with a system containing at least sodium fl... | 05/24/1994 |
| 5186749 | High strength water resistant cementitious compositions Previous weather resistant cementitious compositions in which succinic acid derivatives were incorporated to improve weather resistance have been found to suffer from an undesirable decrease in compressive strength. In accordance with the invention, compr... | 02/16/1993 |
| 5125976 | Method of milling the Portland clinker for the production of gypsumless Portland cements A method for milling Portland clinker for the production of gypsumless Portland cements is provided. The method comprises milling the Portland clinker in the presence of 0.01 to 0.05 weight % of a synthetic, organic, surface-active substance with wetting ... | 06/30/1992 |
| 5108511 | Non-emulsion masonry cement additives and method of producing masonry cement compositions containing same Masonry cement additives are provided which, when interground with Portland cement, produce a masonary cement having superior workability, plasticity and board life, while unexpectedly also having advantageously low levels of entrained air. The additives ... | 04/28/1992 |
| 5106424 | Decontamination method and use of contaminant Decontamination of a beach or soil area that has hydrocarbon contamination including removing hydrocarbon contaminated sand or soil from an area; mixing the contaminated soil or sand with cement and water; and forming concrete from the mix.... | 04/21/1992 |
| 4986854 | Method of improving quality of mortar or concrete structures and additives therefor Disclosed is a method of improving the quality of a structure to be prepared from mortar or concrete, the method being characterized in that when the mortar or concrete is kneaded, a water-soluble amino resin is admixed therewith, or a water soluble amino... | 01/22/1991 |
| 4913741 | Chemical additive for hydraulic cement mixes A hydraulic cement mix comprising a hydraulic cement, aggregate in an amount of up to 80% by weight based upon the total weight of said cement mix, sufficient water to effect hydraulic setting of the cement, and an air-entraining additive consisting essen... | 04/03/1990 |
| 4880898 | Water-soluble polycondensates based on fatty acids, dialkanolamine and maleic anhydride, a process for their production, hydraulic compositions containing them and their use Water-soluble polycondensates of dialkanolamides, fatty acid diethylaminopolyglycolates and fatty acid diethyl ammonium alkyl polyglycolates, which are first reacted with maleic anhydride in a molar ratio of 1:0.5 to 1:2, followed by reaction of substanti... | 11/14/1989 |
| 4878948 | Water resistance additive for cementitious compositions A cementitious composition comprising cement, aggregate, a water soluble or water dispersible polymer, and a polyethylene glycol ester of a C8 -C22 fatty acid having an HLB value from about 11 to 20 as a water resistance additive.... | 11/07/1989 |
| 4753679 | Cement products containing surface treated inorganic particulates Particulate calcium carbonate or iron oxide pretreated with a fatty acid such as stearic acid or oleic acid is added to a cementitious product to improve its strength and resistance to water absorption and penetration. Dry, aqueous and nonaqueous methods ... | 06/28/1988 |
| 4737193 | Chemical additive for hydraulic cement mixes A hydraulic cement mix comprising a hydraulic cement, aggregate in an amount of up to 80% by weight based upon the total weight of said cement mix, sufficient water to effect hydraulic setting of the cement, and an air-entraining additive consisting essen... | 04/12/1988 |
| 4689083 | Chemical additive for hydraulic cement mixes A hydraulic cement mix comprising a hydraulic cement, aggregate in an amount of up to 80% by weight based upon the total weight of said cement mix, sufficient water to effect hydraulic setting of the cement, and an air-entraining additive consisting essen... | 08/25/1987 |
| 4650520 | Slurry for cementing, especially cementing of lining pipes in drill holes, and method for production of such a slurry A slurry is disclosed which contains a hardening mixture of water and cement, especially for cementing lining pipes into drilling holes. The slurry comprises a first slurry component comprising a dispersion of a hardening cement slurry in a liquid capable... | 03/17/1987 |
| 4618369 | Oil-in-water suspensions as additives for cements The invention relates to a process for forming a cement composition which comprises mixing hydratable cement particles, water and an oil-in-water suspension wherein the oil droplets of the suspension are surrounded by colloidal particles having a zeta pot... | 10/21/1986 |
| 4482384 | Cementitious compositions and methods of making same The present invention is directed to an additive composition or admixture for incorporation in cementitious compositions such as concretes, mortars and grouts, neat cement mixes, and dry mixes for the same. These cementitious mixtures are especially suite... | 11/13/1984 |
| 4466833 | Lightweight cement slurry and method of use A foamed, cement slurry comprising an aqueous hydraulic cement slurry containing gas as discrete entrained bubbles and a specific quaternary ammonium compound as a foaming agent; and a process of plugging a subterranean void by emplacing the foamed slurry... | 08/21/1984 |
| 4375987 | Additive combination for hydraulic cement compositions The low temperature stability of an additive product for imparting desirable properties such as water repellency, set-retardation, etc., to hydraulic cement compositions and Portland masonry cements in particular, is improved by the addition of a small am... | 03/08/1983 |
| 4362566 | One-component hardenable substances stable to storage and activatable by mechanical and/or physical forces and method of producing, activating and applying same Hardenable one-component substances composed of hardenable components and an activator wherein one of the components is contained in a reaction hindering protective casing to inhibit hardening until use are disclosed wherein, as an additional component, h... | 12/07/1982 |
| 4329178 | Method in the manufacture of steam-cured light-weight aerated concrete with hydrophobic properties A method in the manufacture of steam-cured light-weight aerated concrete having hydrophobic properties, comprising preparing an aqueous expandable and solidifiable slurry, one or more hydraulic binders and one or more silica-containing materials casting t... | 05/11/1982 |
| 4209335 | Method and composition, including particular additive for hydraulic cement, for fixing waste matter Solidification or consolidation, for fixation of various kinds of waste matter, soil etc. containing toxic contaminants affecting ecological system of the environment, by use of composition made up of hydraulic cement and particular additive. The additive... | 06/24/1980 |
| 4169736 | Additive for grouts, its preparation and use Improving additive for cement and related masses based on an inorganic binder, comprising an alkali extract of lignocellulosic materials, the extract being modified with a fatty acid or an oily ester thereof; a process for the preparation of such additive... | 10/02/1979 |
| 4109051 | Polyhydroxy aromatic coating compositions for reinforcing glass fibers used in cementitious products A composition for coating glass fibers intended for use as reinforcement in cementitious products, containing, as a protective material, at least one monocyclic or polycyclic aromatic compound which has at least three hydroxyl groups on the aromatic ring ... | 08/22/1978 |
| 4094691 | Mortar for anticondensate, antimoisture, heat-insulating, and biocidal plaster A mortar for interior and exterior plastering having anticondensate, antimoisture diffusive, heat insulating and biocidal properties is disclosed.... | 06/13/1978 |
| 4084981 | Quick hardening cement-asphalt composition A quick hardening cement-asphalt composition used as a grout for a ballast-filled track structure comprising (a) 100 parts by weight of a cement composition prepared by adding to portland cement about 10 to 50% by weight of a mixture of a calcium aluminat... | 04/18/1978 |
| 4082563 | Sag resistant mortar compositions There are provided dry-set cement mortars comprising hydraulic cement and water soluble, high molecular weight polymers and metal salts capable of forming gelatinous or hydrated hydroxides in the presence of aqueous base. These metal salts may be the salt... | 04/04/1978 |
| 4067939 | Casting of articles containing calcined gypsum A method of making a cast article from a composition which contains a hydraulic binding agent comprising by weight from 90% to 10% calcined gypsum and from 10% to 90% Portland cement comprises mixing the composition with water to produce a fluid mixture, ... | 01/10/1978 |
| 3947284 | Method for solidifying sludge A sludge having a water/solid high ratio and containing a substance having a harmful influence upon the setting of portland cement is solidified by mixing the sludge with hydraulic portland cement and at least one substance selected from the group consist... | 03/30/1976 |
