Abstract: A method of curing cementitious material comprising added a fibrillated carboxyalkyl cellulose, cellulose alkylsulfonic acid, phosphorylated cellulose or sulfated cellulose having a degree of substitution of 0.01 to 0.45 to the material during mixing. The fibrillated carboxyalkyl cellulose, cellulose alkylsulfonic acid, phosphorylated cellulose or sulfated cellulose may also include bleached or partially bleached wood pulp fiber. The fibrillated carboxyalkyl cellulose, cellulose alkylsulfonic acid, phosphorylated cellulose or sulfated cellulose has a substituent content of from 10 to 150 meq/100 g cellulose fiber. The fibrillated carboxyalkyl cellulose, cellulose alkylsulfonic acid, phosphorylated cellulose or sulfated cellulose is 0.1 to 5% by weight of the dry weight of the cementitious material. The structure produced by the method. The autogenous shrinkage of the cementitious material is reduced.

Abstract: A cacao husk can be effectively used. A member comprises a burned material of cacao husk and a base material, and is sieved so that the median diameter of the burned material of cacao husk becomes approx. 85 ?m or below. The member functions as a heat conducting material, an electromagnetic shielding member, etc. The content ratio of burned material of cacao husk against the base material can be determined according to the frequency band of the electromagnetic waves to be shielded. In addition, the base material can be one of rubber, paint and cement.

Abstract: Disclosed is a concrete repair composition including an aggregate, a binder, and a fiber reinforcement, wherein the fiber reinforcement includes jute fiber having an average thickness of 65 to 75 ?m and an average length of 3 to 6 mm. The jute fiber used for reinforcement has excellent dispersion and bonding when mixing. Also, the jute fiber has high moisture holding capacity, and thus the concrete repair composition can retain water therein during curing, thereby preventing a false-set problem caused by rapid hardening of cement.

Abstract: Hydroxyethylcellulose with a low molar substitution and which is uniformly substituted is useful in cement-based systems, including mortars. The cement-based system exhibits long pot life, as well as very high water retention capability at hot temperature, as well as better paste stability and optimized setting behavior for hot as well as cold temperature compared to typical, cement-based systems with commercial cellulose ether compounds. Less hydrophilic cellulose ethers such as methylhydroxyethylcellulose can be added as a second cellulose ether.

Abstract: The present invention relates to mortars which include a blend of cellulose ether compounds and exhibit improved pot life, water retention capability, and open time, as well as high tensile strength values. These mortars can be used in the fabrication of external insulation finishing systems (EIFS), particularly in hot environments. The cellulose ether blend includes hydroxyethylcellulose ether and methylhydroxyethylcellulose ether. Water soluble anionic polyacrylamide and hydroxypropyl starch can also be added to the mortar.

Abstract: Embodiments disclose method and compositions that comprise cement kiln dust and rice husk ash. An embodiment comprises a method of cementing comprising: placing a settable composition into a subterranean formation, the settable composition comprising cement kiln dust, rice husk ash, and water; and allowing the settable composition to set.

Abstract: A method of manufacturing a cementitious composite including: (1) mixing an extrudable cementitious composition by first forming a fibrous mixture comprising fibers, water and a rheology modifying agent and then adding hydraulic cement; (2) extruding the extrudable cementitious composition into a green extrudate, wherein the green extrudate is characterized by being form-stable and retaining substantially a predefined cross-sectional shape; (3) removing a portion of the water by evaporation to reduce density and increase porosity; and (4) heating the green extrudate at a temperature from greater than 65° C. to less than 99° C. is disclosed. Such a process yields a cementitious composite that is suitable for use as a wood substitute. Particularly, by using higher curing temperatures for preparing the cementitious building products, the building products have a lower bulk density and a higher flexural strength as compared to conventional products.

Abstract: Methylhydroxyethyl cellulose may be used as an additive in cement slurries in the treatment of wells to prevent or reduce the occurrence of gas channeling. In addition to acting as a gas control additive, methylhydroxyethyl cellulose controls fluid loss, minimizes free fluid and stabilizes foam during cementing of the well.

Abstract: A method includes adding in a concrete composition at least one cellulose ether having either, a degree of substitution of methoxy radicals (DSM); or a degree of substitution (DS) comprised from 1.17 to 2.33 to reduce plastic shrinkage and/or reduce plastic cracking in concrete.

Abstract: An agglomerated particulate lignosulfonate material may be made by introducing or forming lignosulfonate microparticles in a fluidized bed agglomerator, and introducing sufficient heated gas and lignosulfonate liquid in the agglomerator to convert the microparticles to lignosulfonate granules of enlarged size. The granules may have an average size of at least 0.1 mm, and may be used to make a dry-blended cement additive or oil well cement that may be dustless, easily poured and stored, and rapidly dissolved in water.

Abstract: A cement product incorporating nanocrystalline cellulose and cellulose fiber throughout the product and a method of making the product.

Abstract: The invention relates to an admixture for a cementitious composition comprising microfibrillar cellulose and/or a derivative thereof. The invention also relates to a method of manufacturing said admixture and to the use of the microfibrillar cellulose and/or a derivative thereof in the concrete admixture. The invention further relates to a cementitious composition comprising said admixture and methods of manufacture and use thereof.

Abstract: An inerting process for impurities in aggregates intended for preparation of hydraulic or hydrocarbon compositions, includes adding to the composition or to one of its constituents a cationic polymer corresponding to at least one derivative of a natural polymer or a polymer of natural origin selected from the group including dextrin (in particular yellow dextrin and white dextrin), chitosan, chitin, alginates, hemicellulose, pectin, polyols or proteins.

Abstract: A method of servicing a wellbore comprising introducing to the wellbore a wellbore servicing fluid comprising an additive composition comprising a polysaccharide having carboxylate and sulfonate groups. A method of servicing a wellbore comprising preparing at the well site an additive composition comprising a polysaccharide having carboxylate and sulfonate groups, introducing the additive composition into a wellbore servicing fluid, and placing the wellbore servicing fluid into a subterranean formation. A method of preparing a wellbore servicing fluid comprising contacting a polysaccharide composition with an oxidizing agent to form an oxidized polysaccharide, and contacting the oxidized polysaccharide with a sulfonating agent to form a carboxylated sulfonated polysaccharide, and contacting the carboxylated sulfonated polysaccharide with a wellbore servicing fluid.

Abstract: A particle or particles of cellulosic wood pulp fibers having a top and bottom face and a hexagonal perimeter, and methods of using it.

Abstract: The present invention relates to an extrudable hydraulic or non-hydraulic binding composition with improved properties with respect to crack formation and a method of making such a composition. The invention further relates to a method of decreasing or avoiding the formation of cracks of an extruded hydraulic or non-hydraulic binding composition and to a method of making an extruded article having less or no cracks. Furthermore, the invention is directed to a cellulose ether providing an extrudable hydraulic or non-hydraulic binding composition with improved properties with respect to crack formation.

Abstract: The present invention relates to a process for the production of nano-fibrillar cellulose gels by providing cellulose fibres and at least one filler and/or pigment; combining the cellulose fibres and the at least one filler and/or pigment; and fibrillating the cellulose fibres in the presence of the at least one filler and/or pigment until a gel is formed, as well as the nano-fibrillar cellulose gel obtained by this process and uses thereof.

Abstract: The present invention relates to a process for the production of suspensions of nano-fibrillar cellulose by providing cellulose fibres and at least one filler and/or pigment; combining the cellulose fibres and the at least one filler and/or pigment; and fibrillating the cellulose fibres in the presence of at least one filler and/or pigment, as well as the suspensions of nano-fibrillar cellulose obtained by this process and their uses.

Abstract: A method of cementing a wellbore comprising preparing a wellbore cementing composition comprising a cementitious materials and a modified biopolymer additive wherein the modified biopolymer additive is the reaction product of a process comprising contacting a biopolymer and an organic carbonate to form a reaction mixture and subjecting the reaction mixture to a temperature of from about 100° F. to about 250° F. and placing the wellbore cementing fluid in the wellbore. A method of cementing a wellbore comprising contacting a modified biopolymer additive with a cementitious slurry to produce a wellbore cementing composition having an initial viscosity, v0; placing the wellbore cementing composition to a desired depth in a subterranean formation wherein the wellbore cementing composition has a transitional viscosity, vt, during placement in the subterranean formation and a final viscosity, vf, at the desired depth wherein vf?vt>v0; and allowing the wellbore cementing composition to set.

Abstract: Methods and compositions that include a method of cementing comprising providing a cement composition comprising water, a hydraulic cement, and an additive comprising at least one additive selected from the group consisting of a stevia retarder and inulin; placing the cement composition in a subterranean formation; and permitting the cement composition to set in the formation.

Abstract: A cementitious composition includes at least one cementitious material, at least one aggregate, from about 0.2% by weight to about 5% by weight of at least one superplasticizer, and from about 0.1% by weight to about 5% by weight of at least one water retention agent. The composition, upon mixing with an aqueous component, has an initial viscosity of no greater than about 150,000 cps, and a 20 minute viscosity of no less than about 250,000 cps.

Abstract: The present invention relates to polysaccharide derivatives having an adjusted particle morphology for use in the preparation of a hydrolytically setting composition having an adjusted lump rating. The invention further relates to a method of adjusting the lump rating of a hydrolytically setting composition comprising adjusting the particle morphology of a particulate polysaccharide derivative. Furthermore, the invention is directed to a hydrolytically 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 fluff pulp or other pulp, comprises a multivalent cationic metal ion selected from the group consisting of Al+3, B+3, Mn+2, Cu+2, Cu+3, Zn+2, Sn+2, Sn+4, water-soluble salt thereof, or combination thereof; an amine-containing anti-static agent; and pulp. Methods of making and using the pulp, as well as articles therefrom, are provided.

Abstract: An admixture for a cement mortar and a cement mortar including the same. The admixture includes at least one of hydroxyethylmethyl cellulose having a degree of substitution (DS) of a methyl group in a range from 1.6 to 2.0 and hydroxypropylmethyl cellulose having a molar substitution MS of a hydroxypropyl group in a range from 0.4 to 1.0.

Abstract: A method includes adding in a concrete composition at least one cellulose ether having either, a degree of substitution of methoxy radicals (DSM); or a degree of substitution (DS) comprised from 1.17 to 2.33 to reduce plastic shrinkage and/or reduce plastic cracking in concrete.

Abstract: A delayed action powdery building compound is provided, consisting of a reactive support material and a liquid polymer component applied to the support material. The inventive compound can contain the support material in the form of hydraulic (latent) binder, inorganic additives and/or organic components, and the polymer component for example in the form of polyvinyl alcohols, polyvinyl acetates and MPS-based polymers. The component makes it possible to obtain the delayed liberation of the support material in an aqueous building chemical mixture as a result of a time-depending separation of the polymer component from said support material. The powdery building compound also makes it possible to carry out a time-controlled hardening of hydratable building material mixtures and to obtain a time-controlled internal drying of aqueous dispersion-based materials.

Abstract: A cementitious composite product that can function as a substitute for stone and solid surface materials, such as granite, marble, and engineered stone is provided. Furthermore methods for manufacturing the cementitious composite product using an extrudable cementitious composition that can be extruded or otherwise shaped into stone-like building products that can be used as a substitute for many known stone products is disclosed. In one embodiment, the cementitious composite products can be manufactured more cheaply to be as tough or tougher and more durable than stone and solid surface materials.

Abstract: A method of curing cementitious material comprising added a carboxylated bleached wood pulp fiber to the material during mixing. The fiber has a carboxyl content of from 10 to 70 meq/100 g cellulose fiber. The fibers are 0.1 to 5% by weight of the dry weight of the cementitious material. The structure produced by the method. The autogenous shrinkage of the cementitious material is reduced.

Abstract: A joint compound or wall repair composition and the method of making the same is disclosed that reduces the amount of airborne dust emitted during traditional sanding processes. Generally, such a reduction can be achieved by combining a first binder that has a high glass transition temperature and a second binder that has a low glass transition temperature with conventional joint compound compositions.

Abstract: A functional cotton spray composition includes: 100 parts by weight of cotton fibers having a length of 3 mm or less; 0.5 to 5 parts by weight of a phase change material; 0.5 to 1 parts by weight of a titanium dioxide photoactive catalyst; 0.5 to 2 parts by weight of at least one natural pigment selected from the group consisting of a pine needle powder, a green tea powder, a mugwort powder, an indigo plant powder, a gardenia powder, a charcoal powder and a yellow soil powder; 0.5 to 5 parts by weight of a dispersant; 5 to 20 parts by weight of a viscosity improver; 10 to 20 parts by weight of an organic flame retardant; 5 to 15 parts by weight of an inorganic flame retardant; 0.5 to 3 parts by weight of an antimicrobial and antifungal agent; and 300 to 600 parts by weight of viscosity-controlling water.

Abstract: A cement slurry composition for cementing a well comprising: a hydraulic cement, water and a combination made of a hydroxyethyl cellulose and an acrylamido-methyl-propane sulfonate-acrylamide copolymer. Provided is also a method for cementing a well involving such cement slurry composition. The composition provides a solution to decouple the fluid-loss control and the slurry rheologyfor cement for slurry and particularly for extended cement slurry.

Abstract: A building material product comprising a cementitious binder, an aggregate and cellulose reinforcing fibers wherein the cellulose reinforcing fibers have been treated with cationic or nonionic oil. The resulting fiber when included in a fiber cement composite results in improved deflection of the composite at peak loading as well as improved impact strength while maintaining overall board strength.

Abstract: A building material product comprising a cementitious binder, an aggregate and cellulose reinforcing fibers wherein the cellulose reinforcing fibers have been treated with oil which is bound to the fiber by a retention aid. The resulting fiber when included in a fiber cement composite results in improved deflection of the composite at peak loading as well as improved impact strength while maintaining overall board strength.

Abstract: Methods and compositions that include a method of cementing comprising providing a cement composition comprising water, a hydraulic cement, and an additive comprising at least one additive selected from the group consisting of a stevia retarder and inulin; placing the cement composition in a subterranean formation; and permitting the cement composition to set in the formation.

Abstract: This invention relates to a formulation with the addition of low density additives of volcanic ash, hollow ceramic microspheres or a combination of microspheres and volcanic ash or other low density additives into cementitious cellulose fiber reinforced building materials. This formulation is advantageously lightweight or low density compared as compared to current fiber cement products without the increased moisture expansion and freeze-thaw degradation usually associated with the addition of lightweight inorganic materials to fiber cement mixes. The low density additives also give the material improved thermal dimensional stability.

Abstract: A cement composition for a self-levelling concrete, includes a mixture of rheology-modifying additives, the combination of at least a first agent for substantially increasing the shear threshold of the concrete in the fluid state, selected from a natural polysaccharide ether, a hydroxyalkyl guar ether, a hydroxyethylcellulose or a hydroxypropyl guar, which are hydrophobically modified with the introduction of hydrophobic side grafts, and at least a second viscosity-increasing agent for substantially increasing the viscosity of the concrete in the fluid state, selected from a non-hydrophobically-modified hydroxyalkylcellulose having a degree of polymerization between approximately 500 and approximately 4500 and a viscosity of less than 50 PA·s in aqueous solution at 2 wt.-% and a poly (ethylene oxide), in order to limit or prevent the dynamic segregation of granulates in the concrete during the implementation thereof.

Abstract: Additives for application in construction chemistry are proposed comprising an organic and/or inorganic core component A) with rheology-enhancing properties and a shell component B) applied to the same by virtue of physical and/or chemical interactions which acts as a coating. Component A) should be a of water-soluble and/or water-swellable and/or water-absorbable compound of the non-cellulose type with viscosity-enhancing properties in the final application. The shell component B) should preferably be a film-forming polymer which is able to release component A) during the application in construction chemistry in a retarded manner such as for example polyvinyl alcohol, polyvinyl acetate and polyethylene glycol. Component B) can be composed of several layers and comprises at least one reactive layer.

Abstract: The present invention concerns a method for preparing materials containing binder systems derived from amorphous silica and bases as well as the materials prepared by the method. Relative to known methods, the present invention allows for a continuous production of material as the two components of the binder are brought onto into contact where the binder system is to be applied. The product achieved by the invention has a broad range of applications, such as for construction materials, insulating materials, fire proof materials, reinforcement materials etc. The present invention also relates to a method for preparing materials containing binder systems derived from amorphous inorganic material and bases as well as the materials prepared by the method.

Abstract: A building product incorporating synthetic microspheres having a low alkali metal oxide content is provided. The synthetic microspheres are substantially chemically inert and thus a suitable replacement for natural cenospheres, particularly in caustic environments such as cementitious mixtures. The building product can have a cementitious matrix such as a fiber cement product. The synthetic microspheres can be incorporated as a low density additive and/or a filler for the building product and/or the like.

Abstract: A cement product incorporating nanocrystalline cellulose and cellulose fiber throughout the product and a method of making the product.

Abstract: Methods and compositions that include a method of cementing comprising providing a cement composition comprising water, a hydraulic cement, and an additive comprising at least one additive selected from the group consisting of a stevia retarder and inulin; placing the cement composition in a subterranean formation; and permitting the cement composition to set in the formation.

Abstract: A method of making a structural component (and such a structural component) comprising mixing together wood pulp, water, bentonite clay, and calcium chloride and forming the mixture into the structural component.

Abstract: An improved composition for and method of priming a concrete pump line is provided. The flowable composition comprises a solid particulate mixture and water, the particulate mixture being comprised of solvatable polymeric material preferably selected from a group consisting of polyacrylamide, polyacrylate and mixtures thereof; an organic complexing agent preferably of urea; and a buffering agent preferably of citric acid. The invention provides a flowable composition exhibiting improved coating and lubrication to the inner walls of a concrete line as it passes therethrough. The flowable composition mixes quickly with water to form a clear solution, hydrates quickly upon being mixed with water, and provides a composition for use in priming concrete pump lines that does not utilize cement or priming grout slurry.

Abstract: A low viscosity aqueous slurry of hydrated lime is obtained by combining as dispersants a carbohydrate such as glucose syrup and a polycarboxylate polymer salt. The slurries obtained exhibit good viscosity stability over practical storage periods.

Abstract: A variety of methods and compositions are disclosed herein, including, in one embodiment, a method comprising: introducing a settable composition into a subterranean formation, wherein the settable composition comprises: a cementitious component comprising a hydraulic cement and cement kiln dust; a swellable particle; and water; and allowing the settable composition to set in the subterranean formation. Another embodiment comprises a settable composition comprising: a cementitious component comprising a hydraulic cement and cement kiln dust, a swellable particle, and water.

Abstract: Hydraulic compositions comprising a setting accelerator, a water-soluble cellulose ether having a degree of alkyl substitution of 1.6 to 2.5 which is a water-soluble alkyl cellulose or a water-soluble hydroxyalkyl alkyl cellulose, and water are useful as self-leveling compositions having an excellent self-leveling capability, a minimal change with time of fluidity, and a short setting time, or as cement mortar compositions having a long open time and a short setting time.

Abstract: A plaster slurry composition includes plaster, water and starch, the starch having a Brookfield viscosity of less than 60 cps at a temperature below 600 C and a Brookfield viscosity greater than 10,000 cps at a temperature of 700 C.

Abstract: An embodiment of the present invention includes a method of cementing in a subterranean formation comprising: providing an extended settable composition comprising hydraulic cement, cement kiln dust, water, and a set retarding additive, wherein the extended settable composition is capable of remaining in a pumpable fluid state for at least about 1 day; adding a cement set accelerator to the extended settable composition; introducing the extended settable composition into a well bore; and allowing the extended settable composition to set. Another embodiment of the present invention includes a method of cementing in a subterranean formation comprising: providing an extended settable composition comprising hydraulic cement, cement kiln dust, water, and a set retarding additive; storing the extended settable composition; adding a cement set accelerator to the extended settable composition; introducing the extended settable composition into a well bore; and allowing the extended settable composition to set.

Abstract: The invention relates to compressed blocks of wood agglomerate, comprising wood particles and a hydraulic binder, produced by a method in which an initial mixture comprising wood particles and a hydraulic binder is held under pressure for the duration of the hardening of the binder. The invention further relates to a method for production of said blocks and the use thereof in particular, as construction elements for buildings.

Abstract: The invention relates to a hydraulic binder whose main constituent is cement to which a mixture comprised of a chromate reducer and a carrier material is added for chromate reduction. The chromate reducer contains two iron(II) sulfate components, with the first component is made of filter salt from the titanium dioxide production, to which a mineral acid regulator, particularly ground limestone, is added. The second component is moist copperas. The hydraulic binder according to the invention is cost-effective and has chromate contents that are considerably lower than the legally permitted limit. The invention also relates to the use of a mixture of filter salt and copperas as a chromate reducer for reducing water-soluble chromate contents in cement.