5620 results about "Cement Material" patented technology

This invention generally pertains to a composite building material comprising a lightweight core with a thin fiber cement facing on one side of the core and a second facing material on the other side. The fiber cement facing that is used on at least one of the faces of the building material is 3/16″ or less, more preferably ⅛″ or less. The green fiber cement facing is preferably formed by a slurry-dewatering process to form a sheet that is in a plastic, uncured, state prior to manufacture of the composite. The composite building material is assembled in an uncured state and then cured.

A system and method of drilling and/or perforating uses a laser beam to remove material, such as to perforate the casing, cement and formation or drill a well bore. The system and method can further or alternately encompass material analysis that can be performed without removing the material from the well bore. The analysis can be performed apart from or in connection with drilling operations and/or perforating the casing, cement and formation. The analysis can be used in a feed back loop to adjust material removal, adjust material analysis, determine the location of future material removal, and for other uses.

The present invention provides a process for forming cement in a well bore. In this process, a cement composition is formed that comprises a cement and one or more beads mixed with the cement. The cement composition containing the beads is displaced into the well bore, and an inert gas phase is introduced to the cement composition to control a density of the cement composition. The inert gas phase can be introduced by adding a gas generating material to the cement composition and/or a porous material to the cement composition. In an embodiment, the gas generating material is a nitrogen generating material that may be activated by an oxidizing agent. In another embodiment, the gas generating material is a hydrogen generating material, e.g., an aluminum powder. The present invention further provides a cement composition comprising a cement, one or more beads combined with the cement, and an inert gas phase created by, e.g., a gas generating material and/or a porous material.

A cement dispersant having excellent ability to prevent slump loss and high water-reducing property which comprises a polycarboxylic acid type polymer having a specific molecular weight distribution, a method for the production thereof, and a cement composition using the dispersant are provided. The cement dispersant comprises as a main component thereof a polycarboxylic acid type polymer (A), having a weight average molecular weight in the range of 10,000 to 500,000 in terms of polyethylene glycol determined by gel permeation chromatography, and having a value determined by subtracting the peak top molecular weight from the weight average molecular weight in the range of 0 to 8,000.

Methods and devices for augmenting bone, such as in performing vertebroplasty are disclosed. A bone cement injection needle is provided, having a laterally deflectable distal end. The distal end may be provided with one or two or more cavity creation elements, such as inflatable balloons. A cavity creation element may include one or more filament layers. Systems are also disclosed, including the steerable injection needle, introducer and stylet. The system may additionally include a cement delivery gun, one-time use disposable cement cartridges and a cement mixing chamber. Methods are also disclosed.

The invention provides a cement truck densimeter automatic cleaning device and method. The cement truck densimeter automatic cleaning device comprises a liquid feeding pipeline, a centrifugal pump, atee joint, a densimeter mounting seat, a signal acquisition system, a control system and a cleaning tank, wherein the liquid feeding pipeline is connected with an inlet of the centrifugal pump, the tee joint is arranged between the centrifugal pump and the densimeter mounting seat, the third end of the tee joint is provided with a discharge pipeline in a connected manner; the densimeter mounting seat is connected with the cleaning tank; and the densimeter mounting seat is in electric signal connection with the signal acquisition system, and the signal acquisition system is electrically connected with the control system. According to the cement truck densimeter automatic cleaning device, the problem that cement adheres to the inner part of a densimeter is solved, the measuring precision ofthe densimeter is improved and the service life of the device is prolonged; cleaning liquid is automatically fed, the cleaning process is automatically circulated, the cleaning progress is automatically detected; and the cement truck densimeter automatic cleaning device is used for densimeter automatic cleaning, the operation is safer and more efficient, and on-site manpower is greatly saved.

The invention belongs to the technical field of concrete additives in building materials. The high water reduction high collapse protection type polycarboxylate high-performance water reducer mainly comprises the following monomer components: unsaturated methyl vinyl polyoxyethylene ether (A), a chain transfer agent (B), a mixture (C) of one or more of unsaturated acid and unsaturated acid derivatives, an oxidant (D) and a reducing agent (E), wherein the molar ratio A: B: C: D: E of the monomers is 1:0.01-0.5:2-8:0.08-0.5:0.02-0.3. The high water reduction high collapse protection type polycarboxylate high-performance water reducer is prepared by regulating the polymer mass concentration to between 20 and 40 percent by using water, and polymerizing a redox initiator system at normal temperature. The water reducer has the advantages of low doping amount, high water reducing ratio, excellent slump retaining capacity, and high cement adaptability, and the technology has the advantages of no need of extra heat source, implementation at normal temperature, low equipment investment, low cost and suitability for large area popularization and application.

Methods and systems for reverse-circulation cementing in subterranean formations are provided. An example of a method is a method of cementing casing in a subterranean well bore, comprising inserting a casing into the well bore, the casing comprising a casing shoe; equipping the casing with a well head, and a casing inner diameter pressure indicator; flowing an equilibrium fluid into the well bore; flowing a cement composition into the well bore after the equilibrium fluid; determining from the well-bore pressure indicator when the well bore pressure has reached a desired value; discontinuing the flow of cement composition into the well bore upon determining that the well bore pressure has reached a desired value; and permitting the cement composition to set in the subterranean formation. Examples of systems include systems for cementing casing in a well bore.

A rheometer can be used to measure yield stress and viscosity of a cement-based material with excellent results. It mainly includes a drum and at least one adaptive vane assembly. The adaptive vane assembly is replaceably connected to a shaft. The shaft rotates relative to the drum. The ratio of radius (r₁) of the adaptive vane assembly to radius (r₀) of the drum is between 0.1˜0.6. The shaft is rotated with a minimum rotational speed more than 0.001 rad/s, and then can measure its torque at constant speed. Accordingly, the rheometer can greatly reduce the disturbance of vanes of the adaptive vane assembly upon the cement-based materials and reduce the slippage among particles and the vanes. Moreover, the minimum shear stress is defined as a yield stress.

The invention discloses a composite fire-proof material with high refractoriness under load for coke ovens. The preparation method of the material comprises the following steps of: evenly mixing and crushing 40%-60% of Al2O3, 15%-30% of SiC micro powder, less than 2% of Fe2O3, 5%-10% of Si micro powder and 1%-3% of cement as an additive; adding 3%-5% of Al(H2PO4)3 as an adhesive and stirring and mixing evenly; and pouring the mixture to a working region in 20-30 minutes. The furnace-building process comprises the following steps of: cleaning a kiln, measuring, molding, positioning and supporting a mould, adding materials, pouring and correcting, cleaning, starting for warming up and testing. The coke ovens newly built by pouring is characterized in that the top of the chamber of the furnace is fan-shaped, the chamber of the furnace is built by on-site seamless overall vibration pouring according to the process above with the furnace-building materials above, afterheat of the furnace can be recycled for power generation and no chemical residues exist. The furnace is short in charring time and higher in coke recovery and can be started and used at any time between the normal temperature and 1550 DEG C.

The present invention provides methods and compressible foamed sealing compositions for sealing expandable pipe in well bores. The compressible sealant compositions for sealing expandable pipe are basically comprised of a hydraulic cement, a rubber latex, a rubber latex stabilizer, a gas and a mixture of foaming and foam stabilizing surfactants.

A method for cementing a casing in an open well bore having no surface casing, wherein an annulus is defined between the casing and the well bore, the method having: sealing the annulus at the mouth of the well bore with a seal; pumping a cement composition into the annulus through the seal; and taking circulation fluid returns from the inner diameter of the casing. A system for cementing a casing in an open well bore having no surface casing, wherein an annulus is defined between the casing and the well bore, the system having: a seal of the annulus at the mouth of the well bore; a cement composition pump fluidly connected to the annulus through the seal; and a coupling connected to the exposed end of the casing for taking circulation fluid returns from the inner diameter of the casing. A seal of a well bore annulus at the mouth of an open well bore having a casing extending there from and no surface casing, the seal having: an annular plug around the casing in the annulus below and proximate the mouth of the well bore, wherein the annular plug has conduit through the annular plug allowing fluid communication with the annulus below the annular plug; an anchor attachable to the casing above the annular plug; and at least one jack positioned between the annular plug and the anchor, wherein the at least one jack pushes the annular plug downwardly away from the anchor.

A novel well bore drilling system and method utilizes independently deployable multiple tubular strings to drill, line and cement multiple hole sections without intervening trips to the surface. In one embodiment, the drilling system includes two or more independent, telescoping, tubular members that form a nested tubular assembly and one or more sensors disposed on the nested tubular assembly. The nested tubular string is deployed in the wellbore in conjunction with a Bottom Hole Assembly (BHA). In some embodiments, a drilling motor for rotating a drill bit is also positioned in the tubular assembly. The sensors can be disposed in a stator of the drilling motor or adjacent the motor. Also, in embodiments, the sensors can be positioned on extensible members that can position the sensor or sensors adjacent the wellbore wall.

The invention relates to a paste combined filling method utilizing solid wastes of a mine. The method comprises the following steps of: constructing a filling retaining wall at the inlet of an underground worked-out section, and filling waste stones in which target metal is not contained or the content of the target metal is less than a boundary level, wherein the lumpiness is 0 to 400 millimeters, the loose static angle is 40 to 45 degrees, and the filling volume rate of the waste stones is 10 to 45 percent; then mixing 6.25 to 21.25 weight percent of gelatinizing agent, 53.75 to 78.75 weight percent of filling aggregates and 15 to 25 weight percent of water into a stirrer so as to prepare a paste cement material with the weight concentration of 75 to 85 percent; and conveying the paste cement material to the worked-out section through pumping of a filling pipeline or self-flowing under the action of gravity along the filling pipe, wherein the paste cement material is penetrated into the gaps of the waste stones; and the solidified paste cement material and the waste stones form a combined filler. By the method, the utilization rate of beneficiation full tail sand, smelting water granulated slag and underground waste stones is up to 100 percent, so the tailings cannot enter the base, the waste stones cannot emerge from the groove and the smelting water granulated slag cannot be piled up; and the environment and safety problems due to stacking of the wastes on the earth surface are solved from the sources.

The invention relates to a nano self-cleaning fiber reinforced cement product and a production method for the same, which particularly aim to realize photocatalysis antifouling self-cleaning and air purification functions on a traditional fiber cement product by means of coating. The product is mainly applied to building roofs, building curtain walls, wall decoration, municipal traffic engineering construction and modification works, and comprises a fiber reinforced cement structural layer, a fiber reinforced cement decorative finish layer, a nano isolation layer and a photocatalysis layer, wherein the fiber reinforced cement decorative finish layer is composited on the fiber reinforced cement structural layer, the nano isolation layer is composited between the fiber reinforced cement decorative finish layer and the photocatalysis layer, and the fiber reinforced cement structural layer and the fiber reinforced cement decorative finish layer are composited to mold in a mould with a modeling. Net-shaped reinforced materials are laid in the fiber reinforced cement structural layer.

Subterranean fluids are provided that have improved environmental characteristics, and more particularly, subterranean fluids are provided that include a hydraulic cement in an invert emulsion. Methods of using such fluids in subterranean operations also are provided. An example of a method is a method of using a fluid in a subterranean formation. An example of a composition is a fluid comprising a hydraulic cement and an invert emulsion of an oleaginous fluid, a nonoleaginous fluid, and an emulsifying surfactant, wherein the emulsifying surfactant: has an LC₅₀ or EC₅₀ that is greater than about 10 milligrams/liter with respect to Skeletonema costatum, Acartia tonsa, Scopthalmus maximus (juvenile), or Corophium volutator, and demonstrates a biodegradability of: greater than about 70% biodegradation in 28 days when tested according to method OECD 301A or 301E; or greater than about 60% biodegradation in 28 days when tested according to method OECD 301B, 301C, 301F, or 306.

The invention discloses a silicate cement grinding aid and a preparation method thereof. The silicate cement grinding aid is prepared from the following main raw materials by weight: 3-6 parts of sodium hexametaphosphate, 2-5 parts of aluminum sulfate, 5-8 parts of tetra sodium salt of amino trimethylene phosphonic acid (ATMP.Na4), 4-6 parts of ethylene diamine tetra (methylene phosphonic acid) sodium, 38-45 parts of polymeric alkylol amine, 34-42 parts of triisopropanolamine, 8-12 parts of waste engine oil, 2-5 parts of sodium alpha-olefin sulfonate, 10-16 parts of sorbitol, 15-20 parts of diethylene glycol, 8-13 parts of polypropylene wax, 6-10 parts of oxidized polyethlene wax, 4-8 parts of lignite wax, 20-30 parts of odium thiosulfate, 12-18 parts of sodium thiosulfate and 15-20 parts of quicklime powder. The prepared silicate cement grinding aid has the advantages that the quality is stable, the effect is remarkable, the adding amount is small, the use is simple, and the adding is more convenient and reliable to control.

Floor, ceiling and wall covering (01) material, consisting of natural stones, i.e. marble, granite, limestone, onyx, travertine and sandstone, cement based tiles, softwood and hardwood, wood fiber HDF, MDF, agglomerated cork, rubber, and composite tile materials, such as stone, quartz or vinyl composition tiles, in format of tile slabs. Which the thickness is between 4 mm and 35 mm in which at the two opposite edges or sides are jointed together and interlocked by mechanical locking means, by connecting or inserting, (A6 to A5) and connecting or pressing downward (A8 to A9) using polyvinyl chloride (PVC) couplings, connecting in the form of a tongue and a groove which will prevent shifting of two interlocked tiles and or slabs into the opposed direction of each section tile or slab, with an integrated backing layer consisting of cork syntactic foam material, The invention relates to a natural stone core tile slab, allowing for an installation without the use of cement, adhesives or grout, provided with such a mechanical locking system jointed to the core (A4) according to the invention.

Methods and devices are provided for delivery an orthopedic, e.g., calcium phosphate cement to a target bone site. In practicing the subject methods, a flowable cement composition is delivered to a target bone site in conjunction with vibration. Also provided are the devices that deliver a flowable cement to a target bone site according to the subject methods. Introducing a flowable cement to a target bone site in conjunction with vibration in accordance with the subject methods provides for highly controlled penetration of the delivered cement throughout the target bone site without the use of substantial pressure. The subject devices and methods find use in a variety of different applications, and are particularly suited for use in applications where a calcium phosphate cement is to be delivered to cancellous tissue, e.g., as found in a vertebral body.

The invention discloses a polyolefin composite modified asphalt wet-laid waterproof roll and a production method thereof. The polyolefin composite modified asphalt wet-laid waterproof roll comprises a modified asphalt binding layer, a binding isolation membrane protecting layer and a polyolefin thermoplastic elastomer material layer which can achieve a chemical crosslinking reaction and a physical mortise-and-tenon collaborative binding action in cooperation with concrete; and the interlayer structure is as follows: the first layer is the polyolefin thermoplastic elastomer material layer, the middle layer is the modified asphalt binding layer, and the lower layer is the isolation membrane protecting layer, and the layers are subjected to thermocompression binding in the production process. The waterproof performance of the waterproof roll is excellent; and the waterproof roll is wriggled and seeped into capillary bores in cement gel and concrete in cement and concrete setting processes by using modified asphalt with reactivity, and has a chemical crosslinking reaction at a contact interface, so that a basal plane reaction layer which is large in binding force, irreversible in binding, concurrently pliable and hard in binding, lasting in binding is formed, thereby achieving a closely and firmly combined and irreversible binding effect as closely linked as flesh and blood.

The invention relates to a preparation method of a graphene oxide modified polycarboxylic acid type water-reducer. A polycarboxylic acid type water-reducer is a novel efficient water-reducer following a naphthalene type water-reducer, a melamine water-reducer and an amino sulfonic acid based water-reducer, but the mechanical property of concrete cannot be obviously improved by adding the polycarboxylic acid type water-reducer. The preparation method comprises the steps of preparing graphene oxide with natural flake graphite, sodium nitrate, concentrated sulfuric acid and potassium permanganate as raw materials; carrying out ultrasonic dispersion on the graphene oxide; and then adding the polycarboxylic acid type water-reducer with a certain proportion to form an intercalation compound of the graphene oxide and the polycarboxylic acid type water-reducer. With the adoption of the modified water-reducer, on the basisthat the existing water-reducing rate is kept, the flexural strength and the compressive strength of a cement-based composite are obviously strengthened, the relevant raw materials are easily obtained, a preparation technology is reasonable, pollution in a preparation process is little, the performance of products is excellent, and the graphene oxide modified polycarboxylic acid type water-reducer is suitable for industrial production.

The invention discloses a polymer cement waterproof coating which is formed by mixing a liquid material and an inorganic powder material based on a mass ratio of 1:1, wherein the liquid material comprises the following components: 60-80% of polymer emulsion, 0.5-1% of wetting dispersant, 0.05-0.1% of antifoaming agent, 1-5.0% of anti-settling agent, 1-5.0% of coalescing agent, 0.5-1% of mildew-proof preservative, 1-2% of leveling agent and the balance of water; and the inorganic powder material comprises the following components: 35-50% of cement with strength grade of 42.5, 10-15% of admixture, 5-10% of calcium carbonate, 0.1-0.5% of water reducing agent, 1-5% of instant sodium silicate, 1-% of aluminum stearate, 0.05-0.1% of thickening agent, 0.05-0.1% of triethanolamine and the balance of quartz sand. Compared with the traditional JS waterproof coating, the tensile strength, stretch rate, impermeability and secondary impermeability pressure of a film of the polymer cement waterproof coating disclosed by the invention are greatly improved.

Flowable concrete mixtures have an aqueous foam admixture mixed therein to give the concrete mixture desired strength, flowability, and density. The concrete mixtures include a hydration stabilizer to stabilize the aqueous foam. The hydration stabilizer inhibits the reaction between the hydraulic cement and the water in the aqueous foam. The aqueous foam can be further stabilized using a fluorochemical surfactant. Preferred fluorochemical surfactants comprise an oligomer having at least one hydrophilic nonionic monomer and at least one hydrophilic anionic monomer.

The invention discloses a close packing high-performance cement-based fiber composite product and a production method thereof, and particularly discloses a novel fiber-reinforced cement-based composite material product which is prepared by combining a close packing design high-performance cement technology with a hybrid fiber reinforcing technology and has the advantages of excellent constructability, ultrahigh strength, low deformation, high durability and the like. The close packing high-performance cement-based fiber composite product comprises a fiber-reinforced cement-based flexible anti-cracking surface layer and a fiber-reinforced close packing high-performance cement-based structural layer, wherein the fiber-reinforced close packing high performance cement-based structural layer is compounded on the fiber-reinforced cement-based flexible anti-cracking surface layer; 0-3 layers of netlike reinforced materials are paved in the fiber-reinforced close packing high-performance cement-based structural layer; and the fiber-reinforced cement-based flexible anti-cracking surface layer and the fiber-reinforced close packing high-performance cement-based structural layer are compounded in a mold with a decorative effect. The close packing high-performance cement-based fiber composite product is suitable for construction such as building outer wall decoration, indoor engineering construction, road construction, bridge construction and the like.

A rock bolt (1) comprises a tubular body (4) defining a tubular bore (5) for receiving an adhesive or cement filled cartridge (18). A plug (8) is mounted in the bore (5). The plug (8) is displaceable along the bore (5) and sealingly engages the tubular body (4). A bolt head (7) is located at or adjacent a second end (3) of the rock bolt (1). A detent arrangement (10, 12) restrains the plug (8) in a position adjacent an opening at the first end (2) of the rock bolt (1).

A series of sliding sleeves is actuated by a single ball that lands on a first ball seat and shifts the ball seat. The shifting of the ball seat also allows tubing pressure to communicate to a formerly atmospheric chamber on one side of a piston integrated into the back side of the sliding sleeve. The other side of the piston remains at atmospheric pressure so that the shifting of the ball seat not only releases the ball to go to the next ball seat but also puts a net force on the sliding sleeve to shift it against a travel stop to open a port to allow fracturing, even if there is cement in the annulus around the opened port.

The invention relates to an aqueous self-cleaning transparent heat-insulated nano-dope capable of fully shielding infrared ray and ultraviolet ray and a preparation method. The dope comprises the following components in percentage by weight: 30%-70% of film-forming resin, 5%-30% of nano-ATO dispersion, 1%-10% of nano-LaB6 dispersion, 1%-15% of nano-WO3 dispersion, 5%-15% of co-solvent, 2%-10% of film-forming assistant, 0.5%-5.0% of assistant and 5%-25% of deionized water. The preparation method comprises the following steps of: dropping the nano-ATO dispersion, the nano-LaB6 dispersion and the nano-WO3 dispersion into aqueous fluorocarbon resin while stirring, stirring for 30-40 min, orderly adding antifoaming agent, wetting agent, the film-forming assistant, thickening agent and accelerating agent, stirring the solution to obtain the self-cleaning transparent thermal-insulation nano-dope. The dope is applied to the surfaces of cement, an automotive glass and a building glass, has self-cleaning function, can fully shield the infrared ray and ultraviolet ray and has obvious thermal-insulation performance.

The invention discloses a cement-based capillary crystalline waterproof coating. A preparation method of the cement-based capillary crystalline waterproof coating comprises the steps of taking 630.8-748 parts of cement, 234.4-351.6 parts of quartz powder, 9.6-14.4 parts of methyl triethoxysilane, 8-12 parts of dehydrated ammonium aluminum sulfate, 240-350 parts of an emulsion binder, 192.7-289.5 parts of water, 96-144 parts of polyvinyl alcohol, 1.9-2.9 parts of an assistant and 2.4-3.6 parts of sodium methyl silicate; mixing the cement, the quartz powder, methyl triethoxysilane and dehydrated ammonium aluminum sulfate and stirring to obtain a powder material; mixing the emulsion binder, water, polyvinyl alcohol, the assistant and sodium methyl silicate and stirring to obtain a slurry; and mixing the powder material, the slurry and water according to a mass ratio of 6-6.5:4-4.5:4-4.5, and thus a cement-based capillary crystalline waterproof coating capable of being used instantly is obtained. The cement-based capillary crystalline waterproof coating can form a cement crystalline layer on building cement, so that self-waterproof cement concrete can be obtained.

The invention relates to a light-weight Al2O3-SiC-C refractory casting material and a preparation method thereof. The light-weight Al2O3-SiC-C refractory casting material comprises the following raw materials: 40-55 wt% of porous corundum particle, 8-12 wt% of corundum particle, 6-12 wt% of SiC particle, 6-10 wt% of SiC fine powder, 5-8 wt% of corundum fine powder, 8-12 wt% of active aluminum oxide micropowder, 3-5 wt% of calcium aluminate cement, 2-4 wt% of silicon oxide micropowder, 2-4 wt% of ball asphalt, 1.5-2.0 wt% of silicon powder, 0.1-0.3 wt% of aluminum powder and 0.1-0.3 wt% of boron carbide powder. The preparation method comprises the following steps: mixing the raw materials with 8-15 wt% of water, 0.2-0.6 wt% of water reducing agent and 0.02-0.04 wt% of organic explosion-proof fiber, stirring, casting, molding, and naturally drying at 110 DEG C for 12-48 hours to obtain the light-weight Al2O3-SiC-C refractory casting material. According to the invention, the process is simple; and the prepared product has the characteristics of high strength, excellent thermal shock stability, low heat conductivity and high medium erosion resistance, and also has the advantage that the apparent porosity and pore size can be controlled.

The invention relates to anti-blowby cement slurry, and relates to the technical field of cement slurry. The anti-blowby cement slurry consists of the following components in percentage by mass: 90 to 95 percent of cement matrix, 1 to 8 percent of polymer rubber latex powder, 0.1 to 0.7 percent of drag reducer, 0.3 to 3.5 percent of filtration-reducing agent, 0.1 to 1.5 percent of cement defoaming agent and 0.05 to 3.5 percent of thickening time control agent. The anti-blowby cement slurry is a single-component system; and due to the adoption of the rubber latex powder, the brittleness coefficients and elastic modulus of cement are reduced, the well cementation quality can be improved effectively, the fluid channeling can be prevented, and the problem generated when liquid polymer rubber latex is used is solved; and the anti-blowby cement slurry is stirred only by adding water at a construction site, and is convenient to prepare, store, transport and use, so the construction process is simplified, the cost is reduced, and the anti-blowby cement slurry has a bright application prospect.