Abstract: Disclosed is a CO2 solidified fiber cement board and its preparation method. The matrix composition of the fiber cement board prepared in this disclosure is calcium carbonate, which has high compactness, and the crystal form of calcium carbonate is adjusted by adding shell powder to improve the toughness of the matrix, so that the fiber cement board has excellent mechanics and durability performance. In addition, the preparation process does not require high temperature maintenance, and has the characteristics of normal temperature preparation, which creates conditions for the introduction of organic synthetic fibers, so that the organic synthetic fibers can further improve the brittleness of cement fiberboard. While reducing energy consumption, the preparation process can also effectively solve the problem that excessive pressure is easily generated in the fiberboard under high temperature conditions in the existing high-temperature and high-pressure curing process.

Abstract: A non-toxic isosorbide-based degassing agent producible from biorenewable sources for addition to paints and coatings, powder coatings in particular, to prevent pinholing and minimize yellow discoloration during cure without use of potentially harmful VOCs or predominant proportions of benzoin.

Abstract: The concrete composition includes, in a mixture with water, a hydraulic binder, sand and aggregates, wherein the hydraulic binder includes a Portland cement of high reactivity, and the hydraulic binder is present in an amount of 280-340 kg per cubic meter of concrete, a shrinkage reducing admixture is present in an amount of 0-4 L per cubic meter of concrete, and water is present in an amount of 140-160 L per cubic meter of concrete.

Abstract: A cement composition: (a) a hydraulic cement; (b) water; and (c) an alkyl polyglycoside derivative, wherein the alkyl polyglycoside derivative is selected from the group consisting of: sulfonates, betaines, an inorganic salt of any of the foregoing, and any combination of any of the foregoing. A method comprising the steps of: (A) forming the cement composition; and (B) introducing the cement composition into the well. Preferably, the cement composition is foamed.

Abstract: A dry mix for a composite cement is described. The dry mix includes a calcium-containing material, an aluminum-containing material, a lithium-containing accelerant, a retarder, and a pozzolanic additive that contains a soluble sulfur salt. The pozzolanic additive preferably includes a soluble sulfur salt at a fraction greater than approximately 0.2% by weight. The pozzolanic additive may be a fly ash, and is preferably a class C fly ash. A powdered additive for use with a pre-prepared dry mix for a calcium aluminate cement is also described. The powdered additive includes a lithium-containing accelerant, a retarder, and a pozzolanic additive that contains a soluble sulfur salt.

Abstract: Cement and concrete additives and related methods of making and using such additives are disclosed and described. An additive can include molasses and a carrier. An enhanced Portland cement composition can comprise about 97 wt % to 99.9 wt % of the composition and the above described additive comprises about 0.01 wt % to about 3 wt % of the composition.

Abstract: A method for improving the stability of compositions of a product for internal dehydration of a hydrogenated sugar, in particular an isosorbide composition, the method involving the use of monoethanolamine, diethanolamine, triethanolamine and the mixtures thereof as a stabilization agent. The resulting compositions and their various uses thereof are also described.

Abstract: Methods and compositions for cementing operations that include pumice in geopolymer cement compositions comprising slag.

Abstract: The invention concerns the use of a carbohydrate-based compound as a mixing aid and dispersing agent in a pumpable geopolymeric suspension for oil and/or gas industry applications, said suspension further comprising an aluminosilicate source, a carrier fluid, and an activator, and method for placing such a suspension in a borehole. In particular, the suspension according to the invention is used for well primary cementing operations and/or remedial applications.

Abstract: A cementitious composition including at least one cementitious and/or pozzolanic material and at least one desugared molasses. A method of preparing a cementitious composition including forming a mixture of water, at least one cementitious and/or pozzolanic material and at least one desugared molasses. An admixture for cementitious compositions including: (i) at least one desugared molasses; and (ii) at least one alkanolamine and/or at least one polyhydroxyalkylamine.

Abstract: The present invention belongs to the field of binder compositions for construction, more specifically it relates to the use of carboxymethylchitosan as flocculating additive and setting accelerator in binder compositions of the cement, cement mortar, concrete, grout, stucco and similar type. The invention also relates to binder compositions comprising carboxymethylchitosan, as well as to the method for their preparation.

Abstract: Bone cements and methods provided include a bone cement composition having collective attributes and properties desirable for initial fixation as well as interventional applications. Compositions include an amount of Portland cement and an amount of calcium sulfate.

Abstract: The current invention relates to the use of chitin nanocrystals and chitin nanocrystal derivatives. More specifically, the present invention relates to the use of chitin nanocrystals and chitin nanocrystals used in oil and gas operations. The chitin nanocrystals and chitin nanocrystals derivatives can be used as additives to cement and wellbore fluids and can be used to inhibit corrosion in pipelines, on downhole tools and on other oil and gas related equipment.

Abstract: An additive for manufacturing permeable concretes with improved properties and method for manufacturing the same are provided. The additive comprises in a total composition: 33.70 to 54.90% water; 0.30 to 0.50% defoamer; 0.30 to 0.40% bactericide; 0.30 to 0.50% polyglycol; 7.20 to 24.00% of a combination of emulsifiers; 15.50 to 17.00% moisturizer; 0.8 to 22.90% dispersant; and 0.70 to 1.00% biopolymer. The additive for manufacturing permeable concretes can be added to any type of stony aggregate and/or cement improving the product's mechanical properties required in each step before, during, and after of the setting.

Abstract: A liquid aqueous suspension of polysaccharide, contains a mass concentration of at least one polysaccharide of between 15 and 35% in the form of partially hydrated particles dispersed in an aqueous solution of a strong base salt, excluding ammonium salts, with an ionic strength of between 1.25 mol/L and 15 mol/L, has a pH greater than 9 and contains at least one non-phyllitic crystalline mineral powder, referred to hereafter as filler, which is chemically inert in the aqueous suspension and which has a grain size of between 0.1 and 100 micrometers and an attapulgite in micronized form, the aqueous suspension being stable at least in a temperature range from 5 to 30° C. The suspension is suitable for use as an agent for thickening cementitious compositions.

Abstract: A cementitious material manufactured by a process including adding, after pyroprocessing, at least one desugared molasses to at least one cementitious and/or pozzolanic material during manufacture of the at least one cementitious and/or pozzolanic material. A method of manufacturing a cementitious material including adding, after pyroprocessing, at least one desugared molasses to at least one cementitious and/or pozzolanic material during manufacture of the at least one cementitious and/or pozzolanic material.

Abstract: A dry papercrete mix is formed by preparing a wet pulp of fiber material such as newsprint and sharp sand by mixing sand, fiber material and water in a batch or continuous mixer, drying the pulp to a moisture content below that which will cause a reaction with Portland cement and adding additional sand and/or pumice and Portland cement. The resulting dry mix can then be handled, stored and used in the manner which is conventional for concrete. The dry papercrete mix can also be applied by pouring the dry papercrete mix into a form in a dry state and injecting water into the dry mix until the mix is sufficiently wetted without mixing in the manner common for concrete. Structural modules and a technique for joining them into a structure are particularly appropriate to the use of dry application papercrete.

Abstract: The invention concerns the use of a fluid loss control additive in a pumpable geopolymeric suspension for oil and/or gas industry applications, said suspension further comprising an aluminosilicate source, a carrier fluid, and an activator, and method of providing such a suspension in a borehole. In particular, the suspension according to the invention is used for well primary cementing operations and/or remedial applications.

Abstract: The present disclosure describes various building materials used in the building and construction industry, and to buildings or objects constructed therefrom, and to methods of making these building materials. The building materials comprise a polymeric material, such as sodium alginate and/or calcium alginate which confers significant flame-, fire- and heat-resistance or imperviousness to the materials. Other substances can be added to the materials to improve cross-linking and/or to produce resistance to fungal degradation. The building materials which can be produced, processed, or treated using the alginate polymers of the invention include, but are not limited to, wood products; masonry products; wall, roofing, flooring and siding products; and paint products. Further, sodium alginate in the form of a gel may be used as a firebreak to effectively stop the advance of grass fires, wildfires, and forest fires.

Abstract: The present invention relates to polysaccharide derivatives having an adjusted particle morphology for use in the preparation of a hydraulic setting composition having an adjusted lump rating. The invention further relates to a method of adjusting the lump rating of a hydraulic setting composition comprising adjusting the particle morphology of a particulate polysaccharide derivative. Furthermore, the invention is directed to a hydraulic setting composition comprising a particulate polysaccharide derivative having an adjusted particle morphology. The invention is also directed to various uses of the particulate polysaccharide derivative having an adjusted particle morphology.

Abstract: A cementitious composition including at least one cementitious and/or pozzolanic material and at least one desugared molasses. A method of preparing a cementitious composition including forming a mixture of water, at least one cementitious and/or pozzolanic material and at least one desugared molasses. An admixture for cementitious compositions including: (i) at least one desugared molasses; and (ii) at least one alkanolamine and/or at least one polyhydroxyalkylamine.

Abstract: Cement compositions comprising carboxylated inulin and methods of using the same to cement a workspace. In one embodiment, a method of cementing includes providing a cement composition comprising a carboxylated inulin, for example, in a subterranean formation. The method further includes allowing the cement composition to set. In some embodiments, the cement composition has a thickening time of from about 2 hours to about 11 hours. In other embodiments, the cement composition has a viscosity that is about constant for a period of time after the cement composition is placed.

Abstract: A cementitious composition including cement, water, and a rheology modifying additive (RMA) is provided. The inclusion of the RMA improves the cementitiuous composition's response to vibration, and dampens out differences due to minor fluctuations in initial slump of the composition. The RMA may include a dispersant for cementitiuous compositions. The cementitious composition may optionally include other admixtures or additives known in the industry. A method for making the cementitious composition is also provided.

Abstract: A dry cast cementitious composition including cement, water, and a rheology modifying additive (RMA) is provided. The inclusion of the RMA improves the dry cast cementitious composition's response to vibration and dampens out differences due to minor fluctuations in initial slump of the composition. The RMA may include a dispersant for the dry cast cementitious compositions. The dry cast cementitious composition may optionally include other admixtures or additives known in the industry. Methods for making the dry cast cementitious composition and dry cast cementitious articles from the composition are also provided.

Abstract: A strength improvement admixture composition is provided that increases the compressive strength of cementitious compositions without negatively increasing the setting time. The admixture comprises the components of a polycarboxylate dispersant, a set retarder, and a strength improvement additive.

Abstract: A strength improvement admixture composition is provided that increases the compressive strength of cementitious compositions without negatively increasing the setting time. The admixture comprises the components of a polycarboxylate dispersant, a set retarder, and a strength improvement additive.

Abstract: The present disclosure describes various building materials used in the building and construction industry, and to buildings or objects constructed therefrom, and to methods of making these building materials. The building materials comprise a polymeric material, such as sodium alginate and/or calcium alginate which confers significant flame-, fire- and heat-resistance or imperviousness to the materials. Other substances can be added to the materials to improve cross-linking and/or to produce resistance to fungal degradation. The building materials which can be produced, processed, or treated using the alginate polymers of the invention include, but are not limited to, wood products; masonry products; wall, roofing, flooring and siding products; and paint products. Further, sodium alginate in the form of a gel may be used as a firebreak to effectively stop the advance of grass fires, wildfires, and forest fires.

Abstract: A method of preparing a mortar composition, comprising mixing of mortar materials comprising at least 25 to 45 parts by weight of high-early-strength portland cement, 40 to 60 parts by weight of sand, 0.05 to 0.12 parts by weight of polycarboxylic acid-based powdered water reducing agent, and 10 to 25 parts by weight of water, and not comprising any organic adhesives. Mixing of the mortar materials is achieved by agitating the same in an agitator until agitating load rapidly decreases. The mortar composition prepared in accordance with this invention has excellent ability to infiltrate into the surface to be adhered, and high bonding strength after hardening.

Abstract: A novel cement slurry composed of cement and water that can be used in cement stabilization applications. The cement slurry compound itself is chemically treated, by means of a cellulosic or other thixotropic thickening agent(s) to create a thixotropic system wherein the wetted cement remains in suspension and does not settle out prior to use even without further mixing. A chemical retarder/stabilizer is also used to prevent the slurry from prematurely setting during shipping. A novel apparatus and method for mixing the novel cement slurry is disclosed to insure the exact proportioning of all ingredients and the proper wetting of the cement.

Abstract: An additive for Portland-cement slurries comprises a liquid silicate absorbed into a solid porous medium. The additive is incorporated in slurries designed for well-cementing applications. The liquid silicate functions as a retarder aid and dispersant when added to slurries for use at temperatures above about 85° C. The resulting solid product allows use of the liquid silicate in well-cementing operations as if it were a dry additive.

Abstract: In this invention a cementitious capillary crystalline waterproof material with an eka-molecular sieve structure and its manufacturing method is disclosed. The major ingredient of this material is Portland cement; the accessories include silicon dioxide, alumina, magnesia, calcium sulphonate, methlycellulose, quick-setting agent and sodium aluminate, etc. Put separately major ingredient and accessories premixed in given proportion separately into the major ingredient bin and the accessory bins. The major ingredient passing through an impulse flowmeter is carried to the dosing machine; and in the same time, the premixed accessories are automatically weighed by the weighing device using gewichtsabnahme method when they are carried to the above dosing machine; they are mixed in the premixing machine and the refine-mixing machine and prepared to the product. The product is mixed with water and forms slurry.

Abstract: Concrete structures and components with improved strength and toughness. A uniform mix of first constituents comprises: cement of Blaine fineness of 280-360 m2/kg; sand at a mass ratio of 0.75-1.25 of the cement; silica fume at a mass ratio of 0.15-0.4 of the cement; silica flour at a mass ratio of 0.15-0.3 of the cement; and microinclusions at a mass ratio up to 0.35 of the cement. This is then mixed with a blend of second constituents comprising a specified amount of an HRWRA and an amount of water at a mass ratio of 0.2-0.35 of the cement. This is mixed sufficiently to form a uniform cement-based paste to which an amount of macrofibers at a mass ratio of up to 0.35 of the cement is added to yield a uniform product. Nanoinclusions may be added to improve crack resistance and increase density.

Abstract: A hydraulically setting mortar composition containing at least one hydraulically setting component, at least one lightweight filler, at least one cellulose ether, at least one setting retarder and optionally further additional additives, particularly fillers and/or dispersion powders. In addition, a premix for producing a hydraulically setting mortar composition is described containing at least one lightweight filler and at least one cellulose ether and/or a setting retarder. As a result of the inventive ratio of these components, it is possible with much lower lightweight filler contents to obtain more cost effective mortar formulations and/or improved use characteristics, such as e.g. increased adhesive tensile strengths and/or an increased open time. The hydraulically setting mortar composition can be used in gypsum, gypsum-lime, lime-cement, cement and/or thermal plasters, tile adhesives, masonry mortars, full heat protection mortars, surfacers, self-levelling floor materials or repair mortars.

Abstract: A viscosity modifying agent is added to a concrete mixture to give the concrete desirable rheological properties. The viscosity modifying agent is incorporated into a foam admixture before it is mixed into the concrete. Because the viscosity modifying agent is a component of the foam admixture, the viscosity modifying agent is dispersed in the aqueous film that forms the foam bubbles. The viscosity modifier in the foam bubbles gives the foam beneficial rheological properties. The viscosity modifier performs more efficiently when included in the foam bubbles as compared to being mixed directly into the concrete. The foam bubbles containing the viscosity modifier can be stabilized using a fluorochemical stabilizer, which is included in the foam admixture. The foam bubbles can be further stabilized with respect to cement mixtures by including a hydration stabilizing in the cement mixture.

Abstract: Methods and compositions of the invention involve the use of crude intermediate fermentation broth, derived from industrial glucose fermentation processes prior to completion of purification steps, as additives and admixtures for cementitious compositions.

Abstract: Cement compositions, and more particularly, cement compositions that include maltodextrin. An example is a cement composition that includes: a hydraulic cement, water, and an additive comprising maltodextrin. Another example is a cement composition that includes: a hydraulic cement, water, and an additive comprising maltodextrin and an organic acid. Another example is a cement composition that includes: a hydraulic cement, water, and an additive comprising maltodextrin and tartaric acid.

Abstract: A fluid loss control additive comprising a crosslinked polymer and sugar and cement compositions comprising the same. In one embodiment, the fluid loss control additive comprises a polymer and a sugar connected by a pH-sensitive crosslink. In some embodiments, the polymer is a polyvinyl alcohol, and the sugar is a sugar alcohol such as sorbitol.

Abstract: The present invention relates to a slurry containing water, amorphous silica panicles having a particle size less than 1 micron and silica flour with a particle size between 2-200 microns. In order to stablize the slurry, the slurry contains a polysaccharide. The invention further relates to a method for the production of a slurry containing water, amorphous silica having a particle size below 1 micron, and silica flour with a particle size between 2-200 microns, where a polysaccharide is added to a slurry of water and amorphous silica, whereafter the silica flour is mixed into the slurry of amorphous silica.

Abstract: A composition comprising cellulose ether, a superplasticizer and defoamer suitable for use as an additive in extruding inorganic compositions is disclosed. The inventive composition functions as a water retention agent, plasticizer and lubricant in the extrusion of inorganic compositions. The use of the inventive composition in the extrusion of building materials leads to improved processing properties, to a higher surface quality and product properties of the extruded article.

Abstract: Treatment fluid compositions, and more particularly, treatment fluid compositions that include chlorinated carbohydrates. An example is a treatment fluid that includes: a hydraulic cement; water; and a chlorinated carbohydrate. Another example of a treatment fluid is a cement composition including: a hydraulic cement; water; and an additive including a chlorinated carbohydrate and a tartaric acid.

Abstract: The subject of the present invention is the use of particular polysaccharides as admixtures for mineral materials, especially as admixtures for mineral binders. These polysaccharides have, characteristically: a weight-average molecular weight Mw of at least 500 g/mol and at most 9000 g/mol, especially between 700 and 7000 g/mol; and a degree of branching DB of at least 10%, especially between 10 and 40%. The invention also relates to the combined use, in mineral materials, including especially mineral binders, of these particular polysaccharides on the one hand and of certain other admixtures on the other hand, for example admixtures, of saccharidic or nonsaccharidic type, having a plasticizing, superplasticizing or other functionality.

Abstract: A nonionic water-soluble cellulose ether is characterized in that when 3 pbw of the nonionic water-soluble cellulose ether is added to a mixture of 90 pbw of cordierite, 10 pbw of ordinary Portland cement, and 33 pbw of water, immediately followed by kneading at 20° C. and 20 rpm, a maximum torque for kneading is reached within 180 seconds from the addition. It is suitable as an admixture for extrudable hydraulic compositions. The hydraulic composition to which the inventive admixture is added can be kneaded within a brief time into a uniform mass which is smoothly extrudable.

Abstract: A nonionic water-soluble cellulose ether is characterized in that when 3 pbw of the nonionic water-soluble cellulose ether is added to a mixture of 90 pbw of cordierite, 10 pbw of ordinary Portland cement, and 33 pbw of water, immediately followed by kneading at 20° C. and 20 rpm, a maximum torque for kneading is reached within 180 seconds from the addition. It is suitable as an admixture for extrudable hydraulic compositions. The hydraulic composition to which the inventive admixture is added can be kneaded within a brief time into a uniform mass which is smoothly extrudable.

Abstract: A cementitious mixture for concrete including an admixture including dunder having a solids content in a range of from 5% to substantially 100% by weight, the dunder being added to the cement in a range of from 0.1% to 5% by weight of cement in a concentration which results in the initial setting time being less than thirty-six hours.

Abstract: A method of cementing, comprising displacing a cement composition into a workspace, wherein the cement composition comprises cement, water, and a fluid loss control additive comprising a polymer and a sugar connected by a pH-sensitive crosslink, and allowing the cement composition to set. A method for reducing fluid loss from a cement composition, comprising providing a cement and a fluid loss control additive, wherein the fluid loss control additive comprises a polymer and a sugar connected by a pH-sensitive crosslink, and mixing the cement, fluid loss control additive, and water to form the cement composition.

Abstract: The present invention relates to methods of stimulating a subterranean formation. More particularly, but not by way of limitation, the present invention relates to methods of fracturing subterranean formations utilizing a fracturing fluid comprising a permeable cement composition that may be used as a propping agent. One method of stimulating a subterranean formation of the present invention comprises the following steps: preparing a permeable cement composition comprising a hydraulic cement, water, and a degradable material capable of undergoing an irreversible degradation downhole; injecting the permeable cement composition into the subterranean formation at a pressure sufficient to create a fracture in the subterranean formation; and allowing the permeable cement composition to form a proppant matrix having voids in the fracture.

Abstract: This invention relates to improved methods for completing wells in unconsolidated subterranean zones. More specifically, the present invention relates to cement compositions useful in subterranean applications, and more particularly, to permeable cement compositions and methods for forming consolidated permeable cement masses in well bores to prevent sand influx into the well bores with produced fluids. In one embodiment, the permeable cement compositions of the present invention comprise a hydraulic cement, water, and a degradable material capable of undergoing an irreversible degradation downhole.

Abstract: The invention concerns the use of water-soluble polysaccharide derivatives as dispersing agents for mineral binder suspensions. A partially hydrolyzed cellulose containing carboxyl groups and optionally hydroxyalkyl and/or sulfate groups and/or a partially hydrolyzed amylose-rich starch which also has sulfoalkyl groups with 1 to 4 carbon atoms is used as the polysaccharide derivative. These polysaccharide derivatives have a low viscosity and an excellent plasticizing effect in mineral binder suspensions, especially in those based on cement, lime and/or gypsum.

Abstract: This invention discloses a new technology related to cellulose fiber reinforced cement composite materials using the loaded cellulose fibers. This invention discloses four aspects of the technology: fiber treatment, formulation, method and final product. This technology advantageously provides fiber cement building materials with the desirable characteristics of reduced water absorption, reduced rate of water absorption, lower water migration, and lower water permeability. This invention also impart the final products improved freeze-thaw resistance, reduced efflorescence, reduced chemical dissolution and re-deposition, and improved rot and fire resistances, compared to conventional fiber cement products. These improved attributes are gained without loss in dimensional stability, strength, strain or toughness.

Abstract: A cement composition for liquid casting, based on a binder comprising Portland cement and additives comprising at least a fluidizer and a combination of a thickening agent acting by steric exclusion and a gelling thickening agent. The composition can also include a surface active agent to regulate the quantity of entrained air. Mixed with water and an aggregate, it permits obtaining, in a single casting, a self-leveling casting of a high thickness (equal to at least 6 cm) and of low density (about 1.6 to 1.9).