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7608347 |
Modifiers for gypsum slurries and method of using them
An improved gypsum slurry that includes water, calcium sulfate hemihydrate, a polycarboxylate dispersant and a modifier. The modifier is chemically configured to improve the efficacy of the...
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7494950 |
Bone cement compositions having fiber-reinforcement and/or increased flowability
The present invention relates in general to implantable compositions, and method for preparing same, containing a calcium salt-containing component, optionally demineralized bone, a plurality of...
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7128780 |
Process for producing building materials from raw paint sludge
A process for producing building materials, such as asphalt, cement, concrete, mortar, or plaster board from liquid paint sludge containing water and paint solids produced from overspray in...
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7070647 |
Cement composition
A novel cement is alkalescent, capable of solidifying a wide range of soil and applicable to biological environment. The cement composition contains 100 parts by weight of magnesium oxide, 5 to 25%...
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6932863 |
Gypsum product and method therefor
A method for making a gypsum product water resistant, the method comprising adding a suspension of a hydrophobic substance to a gypsum slurry.
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6793851 |
Process for manufacturing infrastructures based on vitrified blast-furnace slag and additive used
A process for constructing infrastructures, in which aggregates, vitrified blast-furnace slag, a pulverulent activator and water are mixed together, the mix is spread out over the ground, compacted...
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6607592 |
Antishrinkage agent for concrete or mortar
The invention concerns a composition in dry state for mortar or concrete, comprising a cement and an antishrinkage agent. The invention is characterized in that the antishrinkage agent consist of a...
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6409825 |
Wet gypsum accelerator and methods, composition, and product relating thereto
A wet gypsum accelerator comprising particles of calcium sulfate dihydrate, water, and at least one additive selected from the group consisting of (i) an organic phosphonic compound, (ii) a...
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6409824 |
Gypsum compositions with enhanced resistance to permanent deformation
A set gypsum-containing composition is disclosed. In one aspect, the set gypsum-containing composition includes an interlocking matrix of the set gypsum formed from at least calcined gypsum, water,...
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6406537 |
High-strength joint compound
A composition comprising calcined gypsum, trimetaphosphate ion, and a water-soluble linear polymer formed by the addition reaction of ethylene oxide and/or alkoxy-substituted ethylene oxide with...
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6162839 |
Composition for producing light plaster, production of the foaming agent used therefor and its use
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6139621 |
Process for producing sulfate cement or sulfate cement aggregates
Sulfate cement or sulfate cement aggregates are produced herein by a process in which hydraulically active synthetic slags having slag basicities CaO/SiO 2 of between 1.35 and 1.6, Al 2 O 3 ...
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6106608 |
Floor patching and leveling compound and associated method
The present invention provides a floor patching and leveling compound ingredient which provides a desired, smooth finish for a floor surface, the resultant floor and a method of making the same. In...
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5980628 |
Curable gypsum-containing composition and method for stabilization of unconsolidated core samples
A curable gypsum-based composition for the production cured gypsum matrix. The composition comprises two-components, the first component includes calcined gypsum suspended in water, and a set...
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5968258 |
Method of making cement from base metal smelter slag
A method of making cement from base metal smelter slag produced by a nickel, copper, lead or zinc smelter, includes crushing the slag with a source of calcium sulphate to a size of less than about...
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5961712 |
Method for making shotcrete and such compositions
The invention provides cementitious mixtures, particularly for use as shotcrete binding materials. The resultant shotcrete has characteristics of rapid setting as low as 5 to 10 minutes, high early...
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5725656 |
Gypsum composition
This invention relates generally to a gypsum composition having improved setting and strength characteristics. More specifically, this invention relates to a gypsum composition comprising an...
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5482543 |
Multipurpose, ecological water-paint
A new and original water paint is disclosed, in liquid form, such as a milky emulsion, containing a low amount of water and comprising minerals, acetic acid solution, and other components. The new...
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5290355 |
Roofing shingle composition, method of formulation, and structure
A formula of lightweight aggregates, fiber, and Portland Cement, which, when graded, prepared and mixed as described produces a lightweight, fire and thermal resistive concrete which can be...
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5273579 |
Quick setting compositions
The present invention concerns a quick setting composition capable of obtaining satisfactory strength developability irrespective of the fluctuation of the ingredients in a metallurgical slag,...
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5135805 |
Method of manufacturing a water-resistant gypsum composition
A method for incorporating siloxane into a water-resistant, gypsum-based article is disclosed, comprising, (A) adding said siloxane to water; (B) mixing said siloxane/water mixture with calcined...
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5041333 |
Gypsum board comprising a mineral case
A continuous process for the production of gypsum board of variable yet predictable density, wherein a fibrous form of stucco produced from gypsum crystals or fibers is combined with standard...
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4931099 |
Self-levelling mortar mixture
A self-levelling mortar mixture containing anhydrite, activator salts, plasticizers, surfactants and water is improved by providing the anhydrite in the form of both coarse-grained particles and...
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4225361 |
Gypsum plaster
Gypsum and anhydrite plaster is improved by adding at least one alkylene diphosphonic acid or water soluble salt thereof, represented by the following formula: ##STR1## wherein X is hydrogen or...
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RE29783 |
Process for treating aqueous chemical waste sludges and compositions produced thereby
Waste sludges containing small amounts of certain types of reactive materials are treated by adding to such sludges materials capable of producing aluminum ions, lime and/or sulfate bearing...
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3997502 |
Mortar of inorganic binder and formaldehyde condensation product of sulfonated aromatic ether, imine or sulfone
A mortar comprising an inorganic binder such as anhydrite, gypsum or cement is rendered more flowable and processible by incorporating therein a condensation product of formaldehyde with a...
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3972723 |
Mortar of inorganic binder and sulfonic acid group-containing formaldehyde condensation product with cycloalkanone
A mortar comprising an inorganic binder such as anhydrite, gypsum or cement is rendered more flowable and processible by incorporating therein a sulfonic acid group-containing formaldehyde...
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3867163 |
Process for regulating setting time of hydraulic cement
The present invention is an improved one of the U.S. Patent 3,782,992 and relates to a process for regulating setting time of hydraulic cement which comprises clinker containing 5-60 percent by...
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3147129 |
Sulfoaluminate cement
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2947643 |
Hydraulic cements
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