Abstract: It is an object of the invention to effectively absorb and remove CO2 in an exhaust gas generated during an industrial process for reducing an amount of exhausting CO2 into the atmospheric air. The exhaust gas containing CO2 is blown into the agglomerate of solid particles containing CaO and/or Ca(OH)2 to contact CO2 to the agglomerate for fixing CO2 in the exhaust gas as CaCO3, thereby to reduce the CO2 concentration in the exhaust gas. Preferably, the solid particles contain water, and more preferably, the solid particles contain surface adhesive water.

Abstract: Concrete with coarse aggregate defined as enriched limestone waste of grading intermediate between the coarse and fine aggregates is characterized by the specified compressive strength and modulus of rupture up to 5,000 and 750 psi, respectively.

Abstract: A more controllable fibrous acoustic ceiling patch or textured material in the form of a sprayable composition includes a base, a filler, an adhesive binder, an anti-foaming agent, a suspension agent, and fibrous materials. The more controllable acoustic ceiling patch is storable and dispensable from a pressurized dispenser having a delivery nozzle. An aerosol system with a spray nozzle is included on the container for selective discharge of the textured material onto a prepared patch area, which may be on a drywall or support panel so as to match and blend with the surrounding acoustic ceiling surface area in order to provide a continuous and unbroken coextensive surface texture of mechanically and visually matched material.

Abstract: Low density joint compounds, and methods for their use are disclosed. Joint compounds comprising water, calcium carbonate, a foaming agent, and a rheology modification agent contain a plurality of stable air bubbles. Joint compounds can have densities of about 4 pounds per gallon to about 8 pounds per gallon. A presently prepared composition has a density of about 4.8 pounds per gallon. A presently preferred foaming agent is a polyether siloxane copolymer. A presently preferred rheology modification agent is poly(ethylene oxide). The joint compounds can comprise additional components such as perlite, mica, talc, preservatives, and latex.

Abstract: Wallboard joint compound compositions comprising water, calcium carbonate, a polyether siloxane copolymer, and a styrene-butadiene polymer are disclosed. The joint compound compositions display significantly reduced cratering, reduced shrinking, greater sag resistance, and excellent workability.

Abstract: The present invention relates to an inorganic cohesion agent for self-compacting cement pastes consisting of a co-precipitated SiO2/CaCO3 mixture.

Abstract: Dry mortar formulations comprising a) from 0.5 to 80% by weight of hydraulic binder, b) from 0 to 97% by weight of fillers, c) from 0 to 3.5% by weight of thickeners, d) from 1.0 to 80% by weight of redispersible polymer powder, and e) from 0.0001 to 1.0% by weight of antioxidants exhibit improved tensile strength and other set mortar properties, particularly after storage of the dry mortar composition.

Abstract: A physical and chemical mixture of aggregative material, chemical products, mineral fillers and/or special pigments in dispersion, with metallic effect, designed to be added to aqueous-phase paint products having a monochromatic-flocculate or multichromatic-flocculate base (known among decorative paint products by the trade name of aqueous-phase Multicolor, Antiche Terre Fiorentine and/or the like), or aqueous-phase paint products without flocculate components (known among decorative paint products by the trade name of Arteacqua glazings and/or the like) in order to obtain a newly devised single-color and multicolor mural-coating decorative paint product both, with and without metallized effect, which can be applied using a spatula, paintbrush, glove and/or roller or the like, and a process for the production thereof.

Abstract: The present invention provides a low dusting joint compound comprising a filler, a binder, a thickener and one or more synthetic polymeric waxes that are at least slightly soluble in water and are solid at room temperature. Preferably the wax includes a high molecular weight polyethylene glycol or methoxy polyethylene glycol having an average melting point of from about 80° F. (27° F.) to about 150° F. (80° C.). These additives impart low dusting properties without a sticky or oily feel. High molecular weight synthetic waxes also act as an internal binder to hold the joint compound together and improves paint gloss retention. The invention results in a joint compound with improved properties for drywall finishing.

Abstract: The invention provides a poultice or sacrificial render comprising fibrous material and diatomaceous earth. Preferably, the ratio of fiber to diatomaceous earth is in the range 1:6 to 6:1 and the fibrous material contains relatively long fibers, such as would be obtained from the manufacturing or pulping of quality paper, for example fibers in the range 1 mm to 4 mm. The invention also provides a poultice mixture comprising fiber, diatomaceous earth and water and optional additives such as a binder or thickening agent and a biocide. The invention also provides a method of removing salt from a salt permeable object comprising the step of applying the poultice mixture to the salt permeable object.

Abstract: A joint compound includes water, calcium carbonate, and a water-soluble polymeric set retarder formed from a monomer having two or more carboxyl groups. The joint compound is useful in various applications and in a hybrid joint compound made with a calcium sulfate hemihydrate setting-type joint compound.

Abstract: A mechanically activated pozzolan prepared from granitic quarry fines. Quarry fines are milled by a high-energy milling process to convert the essentially inert raw granitic fines into a chemically reactive state. When added to a portland cement mortar mixture, mechanically activated fines combined with calcium hydroxide to improve the strength of the cured mortar compared to a similar mixture prepared with raw fines. Mortars prepared with mechanically activated granitic fines typically show strength values comparable to or exceeding similar mortars made using fly ash as a pozzolan. In some instances, the strength of a mortar prepared with mechanically activated granitic quarry fines exceeded a mortar prepared using 100% portland cement as the cementitious component.

Abstract: A physical and chemical mixture of aggregative material, chemical products, mineral fillers and/or special pigments in dispersion, with metallic effect, designed to be added to aqueous-phase paint products having a monochromatic-flocculate or multichromatic-flocculate base (known among decorative paint products by the trade name of aqueous-phase Multicolor, Antiche Terre Fiorentine and/or the like), or aqueous-phase paint products without flocculate components (known among decorative paint products by the trade name of Arteacqua glazings and/or the like) in order to obtain a newly devised single-colour and multicolour mural-coating decorative paint product both, with and without metallized effect, which can be applied using a spatula, paintbrush, glove and/or roller or the like, and a process for the production thereof.

Abstract: A manufactured granular substrate composition suitable for use as a carrier for active chemical agents. The composition includes one or more mineral components having a bulk density greater than about 70 pounds per cubic foot. The composition also contains about one or more light weight additives and one or more water soluble binders. The resulting manufactured granular substrate has a bulk density of less than about 55 pounds per cubic foot with a size guide number of about 75 to about 300.

Abstract: An article for manufacture of marble concrete with use of a specific marble rock unique to certain geographic regions, and process for which rock is removed and thus eliminates stress on rock composition, providing a concrete blend or as an additive.

Abstract: Delayed thixotropic cement compositions and methods of cementing in subterranean zones penetrated by well bores are provided. The novel cement compositions are basically comprised of a hydraulic cement, sufficient water to form a slurry and a water soluble delayed thixotropy imparting additive selected from the group consisting of carbonic acid and alkali metal carbonates.

Abstract: A decorative aggregate-containing cementitious slurry having decorative aggregate and cementitious matrix composition forms a monolithic structure when effectively applied to a freshly poured cementitious base and simultaneously cured therewith. The slurry and the base are cured for a time sufficient for producing the monolithic structure with a decorative aggregate-containing cementitious surface. The slurry produces a decorative aggregate-containing cementitious layer having a cured thickness effective for permanently securing the decorative aggregate therein with a portion of the decorative aggregate exposed. Various decorative surfaces are produced without requiring expensive hand broadcasting of the decorative aggregate, and without expensive surface grinding. Dry components of the slurry are decorative aggregate and decorative cementitious matrix blend.

Abstract: A mechanically activated pozzolan prepared from granitic quarry fines. Quarry fines are milled by a high-energy milling process to convert the essentially inert raw granitic fines into a chemically reactive state. When added to a portland cement mortar mixture, mechanically activated fines combined with calcium hydroxide to improve the strength of the cured mortar compared to a similar mixture prepared with raw fines. Mortars prepared with mechanically activated granitic fines typically show strength values comparable to or exceeding similar mortars made using fly ash as a pozzolan. In some instances, the strength of a mortar prepared with mechanically activated granitic quarry fines exceeded a mortar prepared using 100% portland cement as the cementitious component.

Abstract: The method for sealing a seam between adjacent structural panels significantly reduces the time for finishing a drywall in comparison with conventional methods, which use multiple applications of a joint compound to seal the seam. An all-purpose drywall joint compound is mixed with a synthetic fiber, such as Colombian Fiber, or polypropylene, and sufficient water to facilitate soaking of the synthetic fiber and mixing with the joint compound. An optional liquid adhesive, such as liquid wallpaper adhesive, is added to the mixture. The mixture is then applied as one coat to the seam and allowed to dry. No subsequent coatings of the mixture are necessary.

Abstract: A combination of compositions, products and methods of producing a new type of cement. The cementitious material is created by adding sodium carbonate (also known as soda ash, natron, sodium carbonate decahydrate, etc.) and one or more rocks or minerals from the following—granite, basalt, sandstone or schist. A new method and product are claimed by combining sodium carbonate and one or more rocks or minerals from the following—granite, basalt, sandstone or schist and water. The combination of sodium carbonate and one or more rocks or minerals from the granite, basalt, sandstone or schist group can be either layered or mixed in a dry or wet state. An exothermic reaction starts after the addition of water to the cementitious material.

Abstract: The invention provides a poultice or sacrificial render comprising fibrous material and diatomaceous earth. Preferably, the ratio of fiber to diatomaceous earth is in the range of 1:6 to 6:1 and the fibrous material contains relatively long fibers, such as would be obtained from the manufacturing or pulping of quality paper, for example, fibers in the range of 1mm to 4mm. The invention also provides a poultice mixture comprising fiber, diatomaceous earth and water and optional additives such as a binder or thickening agent and a biocide. The invention also provides a method of removing salt from a salt permeable object comprising the step of applying the poultice mixture to the salt permeable object.

Abstract: A cementitious composition comprising Portland cement and a finely divided limestone accelerator. The Portland cement has a fineness of at least about 3,200 Blaine. The composition may contain one or more blast furnace slags or pozzolans, such as fly ash or silica fume. When pozzolans or slags are present, the weight ratio of limestone to a mortar mixture of Portland cement, limestone, sand, water, and pozzolans or blast furnace slags, is in the range of about 1.4% to about 5.6%. The finely divided limestone acts as an accelerator, decreasing the initial set time of the resulting composition, and increasing the rate of strength gain.

Abstract: A joint compound includes water, calcium carbonate, and a water-soluble polymeric set retarder formed from a monomer having two or more carboxyl groups. The joint compound is useful in various applications and in a hybrid joint compound made with a calcium sulfate hemihydrate setting-type joint compound.

Abstract: Concrete characterized by containing aqueous slurry of ground calcium carbonate which has a mean particle diameter of 0.5-3 micrometers produced by wet pulverization of the limestone. By adding fine powder of ground calcium carbonate, fluidity of the concrete is increased and workability thereof is improved.

Abstract: A joint compound includes water, calcium carbonate, and a water-soluble polymeric set retarder formed from a monomer having two or more carboxyl groups. The joint compound is useful in various applications and in a hybrid joint compound made with a calcium sulfate hemihydrate setting-type joint compound.

Abstract: This invention describes two products both with a plain, fine textured, nonperforated surface visual consisting of a fiberboard substrate with or without a laminated porous nonwoven scrim and then a finished painted surface. The finish painted surface decorates or finishes the board, but most important, must remain acoustically transparent to retain the sound absorption properties of the fiberboard prior to painting. The fiberboard substrate is made to be porous or modified with hole perforations to cause it to be a good sound absorber. If the fiberboard substrate is sufficiently porous without hole perforations, then the sprayable, high solids, porous paint can be directly applied. If hole perforations are used to improve the sound absorption properties of the board substrate, then a porous, nonwoven scrim is attached and painted using the same high solids porous paint.

Abstract: A method of producing a new type of cement, hereafter called Conch-krete. Conch-krete is created by adding sodium carbonate (also known as soda ash, natron, etc.) and one or more minerals from the calcium carbonate group (including aragonite, limestone, calcite, marble, dolomite, etc.) and the addition of water to the mix that will harden into a cement-like material. The combination of sodium carbonate and calcium carbonate can be either layered or in a mixed state. An exothermic reaction starts after the addition of water. The composition of Conch-krete can vary between 20% sodium carbonate and 80% calcium carbonate to 80% sodium carbonate and 20% calcium carbonate. Conch-Icrete can be used in a variety of applications not inclusive of forming bricks, interior architecture, table or counter tops, ornaments, repairing damaged cement products, casting and other applications not mentioned above.

Abstract: A method is described for making concrete mixture by blending new batch cement and fly ash with recycled concrete material (curb & gutter, sidewalk, brick, block, asphalt & various other concrete items). This new process will enable discarded concrete materials to be reused as a valuable product.

Abstract: A method of continuously producing a cementitious composition such as joint compound includes pre-mixing at least two dry ingredients and pre-mixing at least two liquid ingredients. The ingredients are provided in a continuous mixing apparatus and at least substantially continuously blended.

Abstract: Calcium carbonate sludge from sugar beet refining is recycled for use as a blast cleaning medium; and contaminate blast cleaning media is employed in the manufacture of cement. Also disclosed herein is the use of pumice as an additive to enhance the efficiency of blast cleaning media.

Abstract: An ultra-high performance composite concrete, with low cement and fiber content and having good mechanical properties as well as good impacts, shocks and projectile protection properties, includes hydraulic binder, aggregates, an admixture of metal fibers. Particularly, the composite concrete includes 70% to 85% of particles (A) having a particle size distribution which ranges from 0.01 to 3 mm up to particle size distribution which ranges from 0.01 to 0.50 mm; 2% to 10% of particles (B) having particle size of between 0.01 and 1 .mu.m; 3% to 20% of hydraulic binder; 0.1 to 3% of a dispersant or plasticizer; 0.05% to 8.5% of fibers; and, mixing water, wherein the percentages being weight percentages based on the sum of the weights of constituents a) to d).

Abstract: A slurry containing water, carbonate-containing pigment, and dispersant consisting of 25-70 % by weight of agglomerated carbonate-containing pigment, 0.1-1.0% by weight of a dispersant, the balance being water up to 100%, can be used advantageously in papermaking as well as in the paint and lacquer industry. In a novel process for agglomerating ultra-fine particles in slurries the slurry is subjected to heat treatment until the agglomeration is complete.

Abstract: A flowable fill composition is shown which is prepared by mixing together a lime component, a pozzolanic component, aggregate material and water. The composition has a set compressive strength after 28 days of 2000 psi or less and is characterized by the substantial absence of cement or other self-setting adhesive components.

Abstract: A light sand-gravel and its production methodology is provided. The light sand-gravel has a specific gravity within the range of 0.4.about.2.0. It has an expanded inner structure with porosity to approximate an evacuated space and a vitreous surface. The production methodology involves the preheating of sorted and dried rock materials, subsequent heating and heat soaking processes in a converter preset with four stages of temperature control. Stage 1 provides for preheating. Stages 2 and 3 provides heating and Stage 4 provides heat soaking to produce a light sand-gravel aggregate with a particular specific gravity.

Abstract: Limestone filled Portland cement wherein the fineness of limestone particles ranges from 5,000 to 12,000 Blaine and the fineness of clinker particles ranges from 1,500 to 3,000 Blaine.

Abstract: This invention describes two products both with a plain, nonperforated surface visual consisting of a fiberboard substrate with or without a laminated porous nonwoven scrim and then a finished painted surface. The finish painted surface decorates or finishes the board, but most important, must remain acoustically transparent to retain the sound absorption properties of the fiberboard prior to painting. The fiberboard substrate is made to be porous or modified with hole perforations to cause it to be a good sound absorber. If the fiberboard substrate is sufficiently porous without hole perforations, then the sprayable, high solids, porous paint can be directly applied. If hole perforations are used to improve the sound absorption properties of the board substrate, then a porous, nonwoven scrim is attached and painted using the same high solids porous paint. This painted scrim must be sufficiently optically opaque to hide the hole punched board, yet sufficiently open to render it acoustically transparent.

Abstract: A building and construction material and method of making the material utilizes water with cement which are mixed together and followed by mixing with a mineral filler material such as sand or gravel to produce concrete having micropores of about 0.01 to about 5.mu. in diameter. By eliminating from the mineral filler material all fine grains of less than 0.2 mm, it has been found that the strength of the concrete is improved and the amount of shrinkage is reduced.

Abstract: Cement admixtures contain an alkali metal carbonate as component (a) and a mono- or di-carboxylate acid or alkali metal salt thereof or an alkali metal salt of a tricarboxylic acid as component (b).

Abstract: A method of forming a repository for radioactive waste comprises locating the waste in a subterranean vault and backfilling the vault with a filling material which is water permeable and provides a substantial reservoir of available alkalinity such that any ground water permeating through the filling material to the waste has a pH of at least 10.5.

Abstract: A mortar composition for molding, casting or rendering purposes includes: (a) mixture comprising 1.5 to 8 parts by volume of powdered stone and one part by volume of powdered mica based on the total parts by volume of the composition; and (b) a binder therefore. The binder is preferably a hydraulic cement such as Portland cement. An artificial stone may be produced by coating a substrate, such as concrete, with the mortar composition.

Abstract: A new concrete mix sodium nitrate, sodium carbonate, sodium sulfate, calcium chloride, calcium carbide, lime, cement, coarse aggregate and sand in a percent ratio of (0.51-0.70):(0.56-0.58):(0.66-0.90):(0.05-0.10):(0.17-0.40):(0.05-0.01):(2 5-30):(29.25-12):(30-35) mixed with 13.75 to 20% of water. A process for preparing the composition involves comminution of certain components to a predetermined range of particle size and a treatment to insure certain ranges of moisture content of various components of the composition.

Abstract: A new composition for the protection of a body of concrete sodium nitrate, sodium carbonate, sodium sulfate, calcium chloride, calcium carbide, lime, cement, and sand in a percent ratio of (0.9-1.8):(2-3):(2.5-3.6):(0.05-0.15):(0.75-1.15):(0-8-1):(36-40):(49-39.3 ) mixed with 8 to 10% of water. A process for preparing the composition involves comminution of certain components to a predetermined range of particle size and a treatment to insure certain ranges of moisture content of various components of the composition. A new method for the application of the protective composition involves the preparation of the surface being protected to increase the exposed surface area of the surface being protected by a factor of 1.15 to 1.36.

Abstract: A method is described for making concrete mixture by blending new batch cement with recycled concrete material (curb & gutter, sidewalk, brick, block, asphalt & various other concrete items). This new process will enable discarded concrete materials to be reused as a valuable product.

Abstract: A method of reinforcing cement/concrete mixtures with alkali-intolerant reinforcements and/or aggregate, such as uncoated, common glass filament, plastic filament, fabric and roving made therefrom by reducing the pH of the mixture while in its plastic state, and/or after it has set and cured, to about 7. With a neutral pH, the alkali-intolerant reinforcements need not be coated to protect them from degradation. In the absence of alkalinity, the reinforcement and/or aggregate material bonds with the cement mixture to form a relatively stronger mixture, which can be shaped as desired, made part of permanently poured structures, cement boards and many other small and large products. By selecting appropriate and, if desired, different materials for the reinforcements and/or aggregate, the strength, flexibility, etc. characteristics of the product can be readily changed to adapt the product to the intended use. The pH is reduced by migrating such materials as CO.sub.2 and/or CO and O.sub.

Abstract: This invention describes two products both with a plain, fine textured, nonperforated surface visual consisting of a fiberboard substrate with or without a laminated porous nonwoven scrim and then a finished painted surface. The finish painted surface decorates or finishes the board, but most important, must remain acoustically transparent to retain the sound absorption properties of the fiberboard prior to painting. The fiberboard substrate is made to be porous or modified with hole perforations to cause it to be a good sound absorber. If the fiberboard substrate is sufficiently porous without hole perforations, then the sprayable, high solids, porous paint can be directly applied. If hole perforations are used to improve the sound absorption properties of the board substrate, then a porous, nonwoven scrim is attached and painted using the same high solids porous paint.

Abstract: An inorganic hardening composition contains 100 parts by weight of an alkaline earth metal oxide, and 5 to 80 parts by weight of an organic carbonic acid compound.

Abstract: There is disclosed a cement plaster composition wherein an additive having from about 10% to about 75% of a silicone treated powder and from about 90% to about 25% of a pozzalanic filler is combined with a type I Portland cement and a crushed aggregate to form a water repellent coating for plastering a swimming pool surface. The additive may also include rheology modifiers, water reducing agents, or set time modifiers.

Abstract: A method for producing quick setting concrete is provided comprising hydrng a concrete dry mixture with carbonate solution to create a slurry, and allowing the slurry to cure. The invention also provides for a quick setting concrete having a predetermined proportion of CaCO.sub.3 of between 5 and 23 weight percent of the entire concrete mixture, and whereby the concrete has a compression strength of approximately 4,000 pounds per square inch (psi) within 24 hours after pouring.

Abstract: Phosphomagnesia compositions settable into improvedly water-insensitive cements that retain their mechanical properties comprise an intimate admixture of (i) a binder phase including (a) at least one phosphorous compound (P.sub.2 O.sub.5 or derivative/precursor thereof) and (b) at least one magnesium compound reactive therewith in the presence of water, (ii) an effective amount of cementitious aggregate, and (iii) a water sensitivity-reducing amount of at least one silicone homogeneously distributed therethrough.

Abstract: A cement composition consists essentially of (a) from 50% to 97% by weight (calculated on the total composition) of a Portland cement clinker, the sulfur content of which is from 0.5% to 10% by weight expressed as SO.sub.3 and the fluorine content of which is from 0.13% to 1.00% by weight expressed as F, and (b) from 3% to 50% by weight (calculated on the total composition) of an extender containing a carbonate selected from calcium carbonate, magnesium carbonate, calcium magnesium carbonate and mixtures thereof as its main constituent and having a median particle size (d.sub.50) of below 14 .mu.m. Preferably, the total content of C.sub.3 S and C.sub.2 S in the Portland cement clinker is at least 65%. A preferred carbonate is electrostatic precipitator dust extracted from cement kiln exhaust gases. The cement composition may be mixed with further components such as other extenders, retarding agents and aggregate.