Abstract: The present invention provides settable compositions and methods of using settable compositions that comprise a hydraulic cement; a partially calcined kiln feed comprising SiO2, Al2O3, Fe2O3, CaO, MgO, SO3, Na2O, and K2O; metakaolin; and water.

Abstract: The present invention provides a composition and a process for the preparation of chemical activated cold setting fly ash building construction materials. The chemical activator is an alkaline aqueous solution of 11.2 to 13.6 in pH and 1.25 to 1.40 gm/cc in density which contains admixtures of different concentrations of hydroxyl, sulfate, acetate and chloride bearing chemical salts of calcium, magnesium, sodium, potassium and aluminum in water medium. The reaction of chemical activator solution and the mineral constituents of fly ash mix develop binding property. The binding matrix of chemical activated fly ash mix is mostly hydrous silica and silicate group of phases which on setting under atmospheric condition attains strength suitable for building construction application. Utilization of fly ash of any source by weight ranges from 80 to 99% in manufacture of building materials including heat and acid resistance and toxic waste disposal products.

Abstract: An embodiment includes a method of servicing a well bore. The method may comprise introducing a lost circulation composition into a lost circulation zone, the lost circulation composition comprising hydraulic cement, nano-particles, amorphous silica, clay, and water. The method further may comprise allowing the lost circulation composition to set in the lost circulation zone. Another embodiment includes a lost circulation composition. The lost circulation may comprise hydraulic cement, nano-particles, amorphous silica, clay, and water.

Abstract: A geopolymer composite binder is provided herein, the composite binder including (i) at least one fly ash material having less than or equal to 15 wt % of calcium oxide; (ii) at least one gelation enhancer; and (iii) at least one hardening enhancer having a different composition from a composition of the at least one fly ash material.

Abstract: A highwall mining borehole backfill composition utilizing waste glass and fly ash can be used as a backfill utilizing waste products that would normally have to be landfilled. The composition is a cost effective mixture of cement, fly ash, glass and water and may incorporate additional fine and coarse aggregates as well as chemical admixtures. Fly ash takes the place of some or all of the fine aggregate, and cullet takes the place of coarse aggregate in a mixture of concrete. Use of the backfill supports the overlying strata so as to eliminate or reduce the need for barrier pillars.

Abstract: A cementitious composition for high density, low porosity sheet-form building materials having solid surfaces is comprised of cement, pozzolans, and a high percentage of fine and/or coarse glass aggregate.

Abstract: A method of making a cementitious composition comprises (a) selecting at least one pozzolanic particulate material; (b) selecting and grinding at least one feldspar material to a fineness of at least 3000 Blaine; (c) mixing calcium oxide or calcium hydroxide with gypsum; (d) mixing the ground feldspar with the lime-gypsum mixture to produce an activator; (e) conditioning the pozzolanic particulate material with an aqueous solution; (f) adding the activator to the conditioned material to produce a slurry; and (g) curing the slurry in a sealed container. The pozzolanic particulate material can be slag, fly ash, or siliceous rock. A cementitious composition of the invention comprises a pozzolanic particulate material, a ground feldspar material, a lime compound and gypsum, and uses readily available materials, as an economic replacement for Portland cement, fly ash or other materials in filling, backfilling and paving, particularly for backfilling or stabilizing mine sites.

Abstract: Cement compositions containing biowaste ash and methods of cementing in subterranean formations using such cement compositions. Examples of suitable biowaste ash include agricultural waste ash, municipal waste ash, waste-water treatment waste ash, animal waste ash, non-human-non-animal industrial waste ash, and combinations thereof.

Abstract: Provided are methods for producing carbonate-containing compositions comprising silicon-based material (e.g., pozzolanic material) from a source of carbon dioxide, a divalent cation-containing solution, and a source of proton-removing agents. In such methods, divalent cations of the divalent cation-containing solution are provided by digestion of material comprising metal silicates. Also provided are methods for producing carbonate-containing compositions comprising little or no silicon-based material. In such methods, silicon-based material (e.g., silica, unreacted or undigested silicates, aluminosilicates, etc.) may be separated and processed separately from carbonate-containing compositions. Silicon-based material and carbonate-containing material may be blended at a later stage to produce a pozzolanic material, which may be further processed and blended with, for example, Portland cement.

Abstract: A high early strength pozzolan cement includes larger sized pozzolan particles blended with smaller sized hydraulic cement particles containing tricalcium silicate and/or dicalcium silicate (e.g., Portland cement). Excess calcium release from the hydraulic cement when mixed with water forms calcium hydroxide available for reaction with the pozzolan. The fineness of the hydraulic cement particles is substantially greater than the fineness of the pozzolan particles (e.g., about 1.25 to about 50 times greater). Reducing or eliminating coarse hydraulic cement particles that cannot fully hydrate but include unreacted cores reduces or eliminates wasted cement normally found in concrete. Replacing some or all of the coarse cement particles with pozzolan particles provides a pozzolan cement composition having significantly lower water demand compared to the hydraulic cement by itself.

Abstract: The sealing agent for waterproof barriers in the form of a clay and cement suspension made of polymineral clays, characterized by the fact that it contains 3-15% parts by weight of cement, up to 65% parts by weight of fly-ash and/or rock dust of similar granulation, and 30-60% parts by weight, or better up to 50% parts by weight, of water suspension of clay, heavy or loamy.

Abstract: Cement compositions and methods for making cement compositions are provided. The cement compositions can comprise at least one oxide having a particle size of less than about 600 nm.

Abstract: A concrete material with fastener retentive qualities that can be varied to approximate the fastening holding characteristics of a selected variety of wood species or composite wood products comprising a mixture of cement binder, aggregate, and pliable material in the following volumetric ratio of approximately one-half (½) to one (1) part cement binder to approximately two (2) parts aggregate to approximately two (2) to five (5) parts pliable additive material. Cement binder can be Portland Cement, fly ash, slag and a combination thereof. Aggregate can be sand, gravel, stone, crushed rock, and a combination thereof. Pliable material can be plastic, cellulose, crumb rubber, and a combination thereof in pelletized, grannular or powdered form.

Abstract: A concrete composition having a 28-day design compressive strength of 3000 psi and a slump of about 5 inches is optimized to have high workability and a high strength to cement ratio. The concrete composition contains about 299 pounds per cubic yard hydraulic cement (e.g., Portland cement), about 90 pounds per cubic yard pozzolanic material (e.g., Type C fly ash), about 1697 pounds per cubic yard fine aggregate (e.g., FA-2 sand), about 1403 pounds per cubic yard coarse aggregate (e.g., CA-11 state rock, ¾ inch), about 269 pounds per cubic yard water (e.g., potable water), and about 1.4 fluid ounces of air entraining agent per cwt of hydraulic cement. Workability and strength to cement ratio were increased compared to one or more preexisting concrete compositions having the same 28-day design compressive strength and similar slump by optimizing the ratio of fine aggregate to coarse aggregate.

Abstract: A concrete composition having a 28-day design compressive strength of 4000 psi and a slump of about 5 inches is optimized to have high workability and a high strength to cement ratio. The concrete composition contains about 375 pounds per cubic yard hydraulic cement (e.g., Portland cement), about 113 pounds per cubic yard pozzolanic material (e.g., Type C fly ash), about 1735 pounds per cubic yard fine aggregate (e.g., FA-2 sand), about 1434 pounds per cubic yard coarse aggregate (e.g., CA-li state rock, ¾ inch), and about 294 pounds per cubic yard water (e.g., potable water). Workability and strength to cement ratio were increased compared to one or more preexisting concrete compositions having the same 28-day design compressive strength and similar slump by optimizing the ratio of fine aggregate to coarse aggregate. The concrete composition is further characterized by high cohesiveness, resulting in relatively little or no segregation or bleeding.

Abstract: A concrete composition having a 28-day design compressive strength of 4000 psi and a slump of about 5 inches is optimized to have high workability and a high strength to cement ratio. The concrete composition contains about 375 pounds per cubic yard hydraulic cement (e.g., Portland cement), about 113 pounds per cubic yard pozzolanic material (e.g., Type C fly ash), about 1735 pounds per cubic yard fine aggregate (e.g., FA-2 sand), about 1434 pounds per cubic yard coarse aggregate (e.g., CA-11 state rock, ¾ inch), and about 294 pounds per cubic yard water (e.g., potable water). Workability and strength to cement ratio were increased compared to one or more preexisting concrete compositions having the same 28-day design compressive strength and similar slump by optimizing the ratio of fine aggregate to coarse aggregate. The concrete composition is further characterized by high cohesiveness, resulting in relatively little or no segregation or bleeding.

Abstract: A concrete composition having a 28-day design compressive strength of 3000 psi and a slump of about 5 inches is optimized to have high workability and a high strength to cement ratio. The concrete composition contains about 340 pounds per cubic yard hydraulic cement (e.g. Portland cement), about 102 pounds per cubic yard pozzolanic material (e.g., Type C fly ash), about 1757 pounds per cubic yard fine aggregate (e.g., FA-2 sand), about 1452 pounds per cubic yard coarse aggregate (e.g., CA-11 state rock, ¾ inch), and about 294 pounds per cubic yard water (e.g., potable water). Workability and strength to cement ratio were increased compared to one or more preexisting concrete compositions having the same 28-day design compressive strength and similar slump by optimizing the ratio of fine aggregate to coarse aggregate. The concrete composition is further characterized by high cohesiveness, resulting in relatively little or no segregation or bleeding.

Abstract: A ready-mix concrete and method for making the ready-mix concrete having mix proportions that include at least 70% course recycled aggregate and fly ash is provided. The ready-mix concrete including cement, air, water, sand and a remaining percent of virgin course recycled aggregate such that the coarse recycled aggregate combines to 100% of the required course aggregate.

Abstract: The invention relates to an accelerator used for setting and hardening and a method for accelerating and hardening hydraulic binding agents using said accelerator. The principal components of said accelerator are nitrates, aminoalcohols, hydroxycarboxylic acids and polyalcohols. The hardening acceleration is not connected with a rapid loss in processability, which is common in other accelerated systems.

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: The invention relates to a hydraulic binder containing, in percentage by weight: from 1.1 to 9% of tricalcium aluminate from 1.5 to 13.5% of tetracalcium ferroaluminate from 0.5 to 1.5% of dodecacalcium heptaaluminate from 0.5 to 1.5% of tetracalcium trialuminate sulphate from 0 to 0.8% of dicalcium silicoaluminate from 5 to 70% of pozzolanic material(s) from 0 to 6% of calcium sulphate the remainder being composed of the non-aluminous constituents of at least one Portland-type clinker. It also relates to concretes or mortars prepared using a binder of this type.

Abstract: The invention provides geopolymeric compositions, which have controllable thickening and setting times for a wide range of temperatures and a large range of geopolymer slurry densities. The geopolymer slurry compositions have good mixability and pumpability, whilst the set materials develop good compressive strength and permeability. The invention discloses a method for preparing geopolymer for oilfield cementing applications. The geopolymeric compositions according to the invention comprises a suspension comprising an aluminosilicate source, a metal silicate, an alkali activator, lightweight or heavyweight fillers and a carrier fluid wherein the suspension of said geopolymeric composition is pumped in a well and allowed to set.

Abstract: The invention provides geopolymeric compositions intended for use in carbon dioxide injection or production wells or storage reservoirs and preferably in a supercritical carbon dioxide conditions. The geopolymeric composition is formed from a suspension comprising an aluminosilicate source, a metal silicate, an alkali activator, a retarder and/or an accelerator and a carrier fluid wherein the oxide molar ratio M2O/SiO2 is greater than 0.20 with M an alkali metal.

Abstract: A water and flame resistant dry mix stucco is disclosed. The dry mix stucco includes water and flame resistant materials as an integral part of the mixture. The dry mix stucco is combined with water and applied to structures.

Abstract: A rapid hardening hydraulic cement is provided that is made substantially exclusively from a subbituminous fly ash with no portland cement or other strengthening aid.

Abstract: A drainage composition comprising 1000 to 1500 kg/m3 of aggregate; 100 to 350 kg/m3 of cement; 0 to 100 kg/m3 of fly ash; and 0.2 to 0.6 kg/m3 of fibrous material.

Abstract: A ship bottom paint additive to prevent or reduce marine life attachment to the bottoms of ships, and ship bottom paint comprises a mixture of coal ash and diatom earth or beer yeast diatom earth wherein the coal ash is preferably fly ash and the diatom earth or beer yeast diatom earth is preferably a dry powder. The additive is a mixture may have a weight ratio within the range of about 3:1 to 7:1, and may be comprised of about 2.25–10% by weight coal ash and about 0.375–5% by weight diatom earth or beer yeast diatom earth.

Abstract: A settable fluid cementitious composition which is fluid for sufficient time to be suitable for use in a flexible container to provide support in a mine said composition comprises (i) Portland cement in an amount from at least about 8% preferably 10%, (ii) a water soluble silicate in an amount from at least about 2% and (iii) water in an amount to provide a water to solids weight ratio of at lest about 1.2:1 preferably at least abou5 1.5:1 and where the % are by weight based on the combined weights of (i), (ii) and (iii). The viscosity immediately after mixing the components together is sufficiently low that additional water can be incorporated. The composition may include (iv) a pozzolan in an amount from 2 to 35% by weight based on the combined weight of (i), (ii), (iii) and (iv).

Abstract: A method and cement composition is provided for sealing a subterranean zone penetrated by a well bore, wherein the cement composition comprises zeolite, cementitious material, and water sufficient to form a slurry.

Abstract: Dry mixes for hydraulic cement coatings for masonry, above ground concrete structures and below ground concrete structures. Hydraulic cement, sand and particular aggregates are combined to form the dry mix, which is combined with a controlled quantity of a water base emulsion binder and water to form the hydraulic cement coating. The water base emulsion binder may be replaced with a redispersible polymer binder and a quantity of water.

Abstract: Cements or hydraulic binders may be prepared by adding an aqueous suspension comprising a ground mineral filler and at least one grinding aid agent to a cement or hydraulic binder. The resulting cement or hydraulic binder has very appreciably improved mechanical properties, particularly the property of “strength at young ages.” The grinding aid agent may be a natural or synthetic homopolymer and/or copolymer.

Abstract: Cementitious compositions comprising pozzolonic materials, alkaline earth metals, and a catalysts to catalyze the reaction between the pozzolonic materials and the alkaline earth metals.

Abstract: A method and cement composition is provided for sealing a subterranean zone penetrated by a well bore, wherein the cement composition comprises zeolite, cementitious material, and water sufficient to form a slurry.

Abstract: The present invention provides cement compositions comprising an improved fluid loss control additive, and methods for cementing in a subterranean formation using such cement compositions. The cement compositions comprise a hydraulic cement, water, and a fluid loss control additive comprising at least two polymers connected by a pH-sensitive crosslink. Optionally, other ingredients may be included in the compositions.

Abstract: A finely ground powder comprising a mixture of fly ash and a compound selected from the group consisting of alkali and alkaline earth metal salts, alkali and alkaline earth metal oxides, and metakaolinite. Preferably, the amount of said compound is 0.4 to 1% by weight of the powder. A composition comprising Portland cement and finely ground powder, said finely ground powder being a mixture of fly ash and a compound selected from the group consisting of alkali and alkaline earth metal salts, alkali and alkaline earth metal oxides, and metakaolinite. A method for the treatment of fly ash comprising the step of subjecting a mixture of fly ash and a compound selected from the group consisting of alkali and alkaline earth metal salts, alkali and alkaline earth metal oxides, and metakaolinite, preferably in which the fly ash has been treated for removal of carbon and in particular to increase the amount of crystalline phase.

Abstract: A chemically-bonded cement material and concrete which includes a calcium aluminate component, a calcium silicate component, a sodium phosphate compound, and bottom ash which chemically reacts with the sodium phosphate compound to produce calcium phosphates. The chemically bonded cement may include a polymeric compound, such as acrylic-styrene copolymer, and fibrous materials, such as E-glass fibers, carbon fibers, or polypropylene. The concrete includes the chemically-bonded cement and aggregates. The materials are well suited as rapid setting repair patching and fill for damaged roads, remediating material for contaminated soil and as backfill underlayment, and as high strength precast concrete products.

Abstract: The present invention provides methods, lightweight well cement compositions and additives for the well cement compositions. The methods of the invention for sealing pipe in a well bore penetrating a zone or formation which readily fractures at low hydrostatic pressure is basically comprised of the steps of providing a lightweight cement composition comprised of a hydraulic cement, water and an additive comprising an aqueous suspension of microspheres containing a water swellable clay suspending agent, placing the cement composition in the annulus between the pipe and the well bore and allowing the cement composition to set.

Abstract: The present invention provides methods, lightweight well cement compositions and additives for the well cement compositions. The methods of the invention for sealing pipe in a well bore penetrating a zone or formation which readily fractures at low hydrostatic pressure is basically comprised of the steps of providing a lightweight cement composition comprised of a hydraulic cement, water and an additive comprising an aqueous suspension of microspheres containing a water swellable clay suspending agent, placing the cement composition in the annulus between the pipe and the well bore and allowing the cement composition to set.

Abstract: A pozzolan admixture composition suitable for use in portland cement mixtures and mix designs that, when combined with; portland cement, sand and/or aggregate, and water, are used to prepare cementitious products. The admixture contains ultra-fine fly ash, calcined kaolin, fused silica, and cellulose ether derivative. A pozzolan-modified portland cement composition containing the present invention's composition inter-ground or inter-blended with a portland cement. The pozzolan-modified portland cement contains portland cement, ultra-fine fly ash, calcined kaolin, fused silica, and a cellulose ether derivative. An admixture, additive, or addition, based on the present invention's composition, inter-ground or inter-blended into portland cement to create such pozzolan-modified portland cements.

Abstract: The invention relates to the technical field of mortars, concretes, and other compositions based on cement, and in particular to agents capable of modifying their rheological characteristics, in particular workability. Workability may be defined as the property of a hydraulic binder to remain workable during as long a time as possible. The invention relates to novel agents of the acrylic copolymer type having urethane functions for improving the workability of hydraulic binders, to a method of preparing such novel agents, to binders containing them, and to uses for them. Such agents have the advantageous property of not retarding the setting time.

Abstract: The present invention provides methods, lightweight well cement compositions and additives for the well cement compositions. The methods of the invention for sealing pipe in a well bore penetrating a zone or formation which readily fractures at low hydrostatic pressure is basically comprised of the steps of providing a lightweight cement composition comprised of a hydraulic cement, water and an additive comprising a suspension of microspheres in water gelled with sodium bentonite, placing the cement composition in the annulus between the pipe and the well bore and allowing the cement composition to set.

Abstract: The present invention provides methods, lightweight well cement compositions and additives for the well cement compositions. The methods of the invention for sealing pipe in a well bore penetrating a zone or formation which readily fractures at low hydrostatic pressure is basically comprised of the steps of providing a lightweight cement composition comprised of a hydraulic cement, water and an additive comprising a suspension of microspheres in water gelled with sodium bentonite, placing the cement composition in the annulus between the pipe and the well bore and allowing the cement composition to set.

Abstract: An aqueous fire resistance treatment composition consisting of water, sodium silicate, a calcined filler and a latent acid catalyst is disclosed. The composition may be applied to cardboard substrates such as corrugated cardboard. The composition is then cured to provide enhanced fire resistance.

Abstract: The present invention provides stable well cementing methods and compositions for sealing subterranean zones penetrated by well bores. The improved thermally stable and degradation resistant well cement compositions are basically comprised of a hydraulic cement, sufficient water to form a pumpable slurry, an aqueous hydrogenated styrene-butadiene rubber latex and a latex stabilizer present in an amount sufficient to stabilize the hydrogenated styrene-butadiene latex.

Abstract: A rapid setting cementitious composition useful for making cement boards employs an insoluble form of anhydrous calcium sulfate (anhydrite) to accelerate setting and to permit reducing the amount of high alumina cement usage.

Abstract: Methods and compositions for sealing subterranean zones penetrated by well bores are provided. The methods basically comprise the steps of introducing a sealing composition into the subterranean zone comprised of a hydraulic cement, sufficient water to form a slurry and a rapidly acting thixotropy providing gelling agent, and allowing the sealing composition to remain at rest in the zone whereby the sealing composition rapidly gels and then sets into a hard impermeable mass therein.

Abstract: Methods and compositions for sealing subterranean zones penetrated by well bores are provided. The methods basically comprise the steps of introducing a sealing composition into the subterranean zone comprised of a hydraulic cement, sufficient water to form a slurry and a rapidly acting thixotropy providing gelling agent, and allowing the sealing composition to remain at rest in the zone whereby the sealing composition rapidly gels and then sets into a hard impermeable mass therein.

Abstract: A masonry cement composition is provided which contains a blend of fly ash, Portland cement, a retarding agent, and an air entrainment agent. The masonry cement composition may be formed into a mortar having a high air content which exhibits good compressive strength and does not exhibit efflorescence.

Abstract: The present fiber reinforced cellular concrete is produced through a chemical reaction that does not require high heat or pressure ovens (autoclaves). Among its unique features, is the fact that different compression strengths can be obtained by varying the proportion of ingredients and resulting densities. The concrete utilizes a base of a pozzolanic product with aluminum powder, lime, calcium formate, cement, and polypropylene fiber is added, along with water. Expanded shale, clay or slate is added to provide lower shrinkage to the resulting mass reducing cracking. Optionally, sand and compatible reinforcing material can also be added.

Abstract: A fly ash composition is provided which includes a blend of Class C fly ash, potassium carbonate, and lithium carbonate, which, in combination, reduce alkali silica reactivity when the fly ash composition is used in concrete applications. The fly ash composition includes from about 65 to 99 wt % Class C fly ash, from about 0.1 wt. % to about 4 wt % potassium carbonate, and from about 0.1 wt. % to about 4 wt. % lithium carbonate.