81 results about "Cement" patented technology

The invention provides a novel method for preparing a latent nonionic self-emulsifying epoxy curing agent. The method comprises the following steps of: reacting long alkyl chain fatty amine with diglycidyl ether to prepare an addition product of which the middle part is connected with a long hydrophobic side chain and two ends are provided with epoxy groups; and reacting polyamine with a carbonyl compound to prepare an imine compound which contains secondary amine, and sealing the end to prepare the latent nonionic self-emulsifying epoxy curing agent. Under water environment, the imine structure in the curing agent hydrolyzes hydrophilic amino, and the curing agent contains the long hydrophobic alkyl chain, so the curing agent has the functions of emulsifying and curing an epoxy resin. The curing agent can be used for water-based epoxy emulsion coatings, water-based epoxy resin modified emulsified asphalt and cement and the like, and has excellent adhesion performance of ketimine on a wet surface. Due to the introduction of hydrophobic chains, the stability of the imine curing agent is improved in the water environment, and the performance of the curing agent in the aspect of wet surface or underwater adhesion can also be improved.

Ultrahigh-toughness concrete and a preparing method thereof are disclosed. The concrete is prepared from, by weight, 380-580 parts of cement, 150-170 parts of slag powder, 250-380 parts of fly ash, 200-400 parts of quartz sand, 13-15 parts of bamboo wood phenolic alcohol liquified resin, 13-18 parts of polypropylene resin, 0.5-1.5 parts of carboxymethylcellulose, 23-47 parts of core-shell acrylic acid elastic emulsion, 5-10 parts of a chemical-resistant modifier, 14-18 parts of bamboo fibers, 2.5-8.5 parts of nanometer silicon particles, 7-13 parts of nanometer calcium carbonate, 3-5 parts of anionic polyacrylamide, 3.7-8.3 parts of poly(diallyldimethylammonium chloride), 0.4-1 part of poly(ethylene glycol) acrylate, 20-30 parts of an acrylic emulsion, and the like. The ultrahigh-toughness concrete has high tensile strength, high compressive strength, ultrahigh ductility, good energy consumption capacity and good elastic modulus.

A vertical cement pipe forming machine is composed of base, a set of feeding unit consisting of conveying belt and walking mechanism and at least two sets of forming units. Each forming unit consists of machine frame, concentric internal mould, external mould and vibrating mandrel, shaping dies, and die pressing frame.

The invention discloses a disposing method of hardening sludge imbed, which comprises the following steps: adding solid material cement, clay or clayey soil into sludge; stirring each group evenly to form solid material; proceeding fill-imbed disposition; usage of each group followed by weight at sludge 100 wt%, cement 15-80 wt%, clay or mild 20-160 wt%. The invention can realize environmental usage, which saves cost obviously.

The invention discloses a construction method for a concrete shear wall and belongs to the field of construction. The construction method is characterized in that an outer template of an outer wall of the shear wall is a disassembly-free template, one side surface of the disassembly-free template is connected with the concrete wall in a concretion mode, and the other side surface of the disassembly-free template is an outer wall surface of a building; the disassembly-free template is a heat insulation composite board; cement fiber plates or calcium silicate boards on both sides and a middle interlayer are bonded to form the heat insulation composite board, and the middle interlayer is made of heat insulation materials. The construction method for the concrete shear wall has the advantages that the construction cost is low, the construction duration is short, and constructions for the wall structure, the heat insulation structure and outer wall outer decorations are achieved at a time.

The invention provides plant growth type porous concrete suitable for plant growth. The concrete comprises a porous concrete body with thickness and mixed fine loam covering the surface layer of the porous concrete body. The porous concrete body comprises components by volume density as follows: 150-325 kg/m<3> of cement, 1,495-1,550 kg/m<3> of ceramsite, 40-86 kg/m<3> of fly ash, 10-12 kg/m<3> oflimestone powder, 100-120 kg/m<3> of fine loam, 2-3 kg/m<3> of plant ash, 15-30 kg/m<3> of rice husk charcoal, 2.5-4 kg/m<3> of a water reducing agent, 10-20 kg/m<3> of EVA latex powder, 17-40 kg/m<3> of butadiene-styrene rubber powder, 13-23 kg/m<3> of a polyacrylate emulsion, 20-30 kg/m<3> of organic compost, 15-20 kg/m<3> of vermiculite, 2-3 kg/m<3> of seaweed meal, 0.5-0.7 kg/m<3> of tea seedmeal, 2-3 kg/m<3> of neem cakes, 0.7-1.2 kg/m<3> of polyacrylamide, 0.5-1 kg/m<3> of ferrous sulfate, 3-4 kg/m<3> of modified loofah fiber, 0.8-1 kg/m<3> of an organic silicon defoamer and 60-90 kg/m<3> of water.

The invention discloses a double-layer dragon fruit planting method. Rectangular pieces are made firstly, the line spacing is 2.8-3.2 m, the width of the rectangular pieces is 1.4-1.8 m, and the height of the rectangular pieces is 20-30 cm. Cement columns with the radius of 5-7 cm are uniformly arranged on the rectangular pieces at intervals of 2-3 m, wherein the height is 175-185 cm. Two layers of rectangular frames are arranged on the columns, the lower-layer height is 95-105 cm, the upper-layer height is 170-180 cm, and the upper layer of rectangular frames is 3-5 cm away from the top ends of the columns. The width of the rectangular frames is 26-35 cm. Bamboo poles are arranged among the columns, long and short bamboo poles are arranged at intervals, long bamboo poles are connected with upper-layer long rods, short bamboo poles are connected with lower-layer long rods, and the separation distance of the bamboo poles is 40-50 cm. During planting, seedling selection, leveling, fertilization and separated planting, water and fertilizer management, branch pruning, flower and fruit management and dragon fruit planting management of disease and pest prevention and control are performed. The double-layer dragon fruit planting method adopts planting frames on the premise that the dragon fruit growth requirement is met and fully utilizes land resources and light conditions, the acre yield, quality and sweetness of dragon fruits are improved, and the economic benefits of dragon fruit planting are increased.

The invention discloses color concrete. The color concrete comprises 420-480 parts of cement, 650-800 parts of sand, 980-1,150 parts of cobblestones, 150-180 parts of limestone powder, 100-150 parts of white carbon black, 165-175 parts of water, 30-45 parts of a pigment, 2.0-3.5 parts of acrylic acid emulsion powder and 4.5-6.2 parts of an admixture. A preparation method comprises the following steps: (1) the raw materials are weighed in a predetermined ratio; (2), the pigment, the white carbon black and the acrylic acid emulsion powder are placed into water and stirred uniformly, and color water is formed; (3) the sand, the cobblestones and the limestone powder are fed to a stirrer for stirring, then the cement is fed, stirring continues, the color water and the admixture well weighed in the step (1) are added to the stirrer jointly and slowly during stirring, and the materials are stirred continuously after addition until uniform stirring is realized. The color concrete is higher in strength, is not prone to cracking and is uniform in color, and the preparation method has the advantages of simple production process and convenience in construction.

The invention provides a soil solidifying material used for over-wet soil and a use method thereof, relating to a soil solidifying material and a use method thereof, aiming at providing the soil solidifying material used for over-wet soil with good reinforced effect and strong solidifying soil water stability and the use method thereof. The technical scheme of the invention is as follows: the soil solidifying material used for over-wet soil comprises the following components in parts by weight calculated by supposing that the over-wet soil needs to be treated is 100 parts by weight: 1-8 parts of soil solidifying agent, 1-10 parts of lime, 0-8 parts of cement and 0-20 parts of coal ash. The use method comprises the following steps: grinding and levelling the soil, evenly spreading the soil solidifying material on the soil; grinding, blending and laminating the soil solidifying material and the over-wet soil together; carrying out material enclosing on the soil layer which is initially laminated for 24-28 hours; and evenly spreading the soil solidifying material on the soil layer again, then stirring, grinding and compacting. The invention is mainly used for the treatment of over-wet soil.

The invention discloses a drilling water based plugging agent and a using method thereof. The plugging agent is prepared by using curing materials, filling materials, bridging materials and suspensionmaterials in ratio of (17 to 25) to ( 7 to 15) to ( 17 to 27) to (30 to 37), filtration time is less than 15s, a filter cake can be formed instantaneously, the loss of plugging materials and drillingfluid can be reduced, the plugging agent is an efficient plugging agent with high water loss, high strength and high acid solubility in one, and can be applied to any form of leakage, especially forpressure plugging and big leak in small cracks with best using effects after matching with clear water, mud systems, cement and the like according to proportion.

The invention belongs to the technical field of buildings and particularly relates to a construction method of a structural system with structural floors as horizontal braces. The method comprises the steps that 1, an envelope structure, cement-mixed piles, engineering pile foundations, structure columns, first steel latticework columns, a supporting pile foundation, a supporting column and second steel latticework columns are constructed in a foundation pit; 2 and 3, earth is excavated to the bottom of first reinforced concrete inner supports, and the first reinforced concrete inner supports and first enclosing purlins are constructed; 4, the earth continues to be excavated downwards, and temporary supports or all floor structures and concrete inner supports are constructed; 5, the earth is excavated to a foundation slab, and a bedding layer, a bearing platform and the foundation slab are constructed; 6, the contained temporary supports are dismantled, and if the temporary supports are not contained, the next step is executed; 7, side walls of all the floor structures, earth outlet holes reserved in all the structural floors and a beam and slab structure on the top are constructed. According to the construction method, foundation engineering and upper structures are constructed at the same time, the construction time can be greatly shortened, the construction cost can be saved, and therefore the total cost of a project can be saved.

The invention discloses a method for manufacturing ecological building blocks of a riverway protection slope from sewage plant sludge, belonging to the technical fields of resource utilization and environmental protection. The method comprises the following steps of: uniformly mixing and stirring sludge, cement, gravels, sand and water of a sewage plant; and prepressing and forming under a certain pressure and culturing under the steaming and curing condition to manufacture ecological protection slope building blocks for riverway renovation. The invention can solve the problems of sludge disposal and treatment, solves the problem of secondary pollution of heavy metals and pathogens in sludge and realizes the renewable resource recycling of the sludge. The produced ecological building blocks have the advantages of high strength and blush resistance, and N, P and K in the sludge can be used as nutrition matrixes for ecological growth, thus the ecological system of the riverway protection slope can be improved and a favorable riverway landscape is built.

The invention discloses a cyclic replacement grouting process of a hole drilling fixing pipe. The cyclic replacement grouting process is divided into hole drilling, cyclic grouting and cyclic replacement of thin slurry by thick slurry. A device adopting the process is further provided and comprises a hole drilling machine, a grouting pump, a mixing barrel, a slurry sucking pipeline, a grouting pipeline, a slurry return pipeline and a hole sealing device; and a hole drilling machine pipeline is connected with the grouting pump, one end of the grouting pump is connected with the mixing barrel through the slurry sucking pipeline, the other end of the grouting pump is connected with an inlet of the hole sealing device through the grouting pipeline, and an outlet of the hole sealing device is connected with the mixing barrel through the slurry return pipeline. The cyclic replacement grouting process of the hole drilling fixing pipe has the beneficial effects that by adopting cyclic grouting, grouting is exchanged for one time through the grouting pipeline and the slurry return pipeline, so that slurry in a hole is evenly distributed, then through the process that the thin slurry is cyclically replaced by the thick slurry, so that the slurry in the hole is replaced from the normal ratio slurry into the thick slurry, the influence of shrinkage after cement consolidation is avoided, and a blank zone is avoided.

The invention relates to novel magnesium oxysulfate cement-based fireproof coating. The fireproof coating is hysteretic in foaming after coating. The surface drying time of the fireproof coating is 80-360 minutes, the fire-resistant time of the fireproof coating is 120-160 minutes, the softening coefficient of the fireproof coating is 0.8-0.9, and the heat conductivity coefficient of the fireproofcoating is 0.08-0.20W/m<2>*K. The fireproof coating comprises, by weight, 30-60 parts of low-grade light calcined magnesium oxide powder, 10-30 parts of light aggregate, 15-30 parts of magnesium sulfate heptahydrate powder, 0.1-1 part of waterproof agent, 0.1-1 part of fiber, 0.1-10 parts of early strength agent, 1-5 parts of active metal foaming agent and the balance water. The novel magnesium oxysulfate cement-based fireproof coating has the advantages that the fireproof coating is low in heat conductivity coefficient, good in thermal stability, capable of preventing foam generated by physical and chemical foaming from breaking during spraying by using the hysteretic foaming technology and uniform in quality; the fireproof coating is good in corrosion resistance, high in safety performance, stable in quality, good in water resistance and high temperature resistance, good in ultraviolet resistance, long in service life and capable of satisfying safety fireproof requirements.

The invention discloses a surface treatment process for a lithium metal anode. The treatment process is characterized in comprising the following steps of preparing a protective layer liquid cement under dry room conditions, taking 50 to 90 parts by mass of polycarbonate, adding 5 to 10 parts by mass of polyethylene oxide to mechanically stir evenly, then adding 5 to 30 parts by mass of lithium salt to stir evenly, adding 5 to 40 parts by mass of fast ion conductor to stir evenly, adding 0.2 to 1 part by mass of vinylene carbonate to mechanically stir evenly, and then adding 0.2 to 1 part by mass of lithium oxalate borate. After the liquid cement is mechanically stirred evenly, the well-cut lithium piece is immersed in the liquid cement for 3 to 10 seconds, and pulled out to stand for 5 to10 seconds, and then flatted, and the lithium metal anode having a surface-coated protective layer is obtained.

The invention provides a novel acrylic pressure-sensitive adhesive. The raw materials for preparing the novel acrylic pressure-sensitive adhesive at least comprise acrylic acid, acrylate, a solvent, an initiator and a plasticizer. The novel acrylic pressure-sensitive adhesive provided by the invention has a simple formula, is not added with additives such as an anti-aging agent, tackifying resin,and a softener, and has good adhesive property to most polar material surfaces or porous material surfaces, such as metals, cement, paper, wood, and ceramics. At the same time, the novel acrylic pressure-sensitive adhesive also has good adhesive property to plastics and fibers such as polyvinyl chloride, polyester, polystyrene and polyolefin treated by corona. The pressure-sensitive adhesive provided by the invention can be reused, can still maintain good adhesive characteristics after being pasted and peeled off for many times, and the peeling strength does not obviously drop; and the pressure-sensitive adhesive can be easily separated from an adhered object and does not cause transfer of an adhesive layer after being adhered for a long period of time or after being subjected to a large amount of pressure.

The present invention provides a new-type discharge controllable cement tank. It includes tank body, in the bottom portion of the described tank body a screw conveyer is set, one end of the described screw conveyer is equipped with an outlet, another end of the described screw conveyer is connected with a driving mechanism. The described screw conveyer includes an external shell whose upper portion is opened and a screw material-pushing shaft which is placed in the described external shell interior, one end of the described material-pushing shaft is connected with the described driving mechanism; and the described driving mechanism includes motor and speed-changing box which can be driven by said motor. The described driving mechanism is a hand-operated rocking wheel; over the described screw conveyer a protection plate is set, the described protection plate is parallel with the described screw conveyer, and the described protection plate is made into an inverted 'V'-shape.

The invention provides an indoor soundproof haze-adsorbing panel. The indoor soundproof haze-adsorbing panel comprises a gypsum supporting plate, wherein a soundproof felt, a polyester fiber sound absorption plate and a Visher Kardson stone plate are sequentially arranged on one side of the gypsum supporting plate, wherein a plurality of grooves are formed in the reverse side of the gypsum supporting plate to enlarge the fit area when cement is used for adhesion; the gypsum supporting plate, the soundproof felt, the polyester fiber sound absorption plate and the Visher Kardson stone plate are adhered and connected. The indoor soundproof haze-adsorbing panel disclosed by the invention adopts the sound insulation and haze-adsorbing double design, can effectively reduce the external noise, and further effectively adsorb the PM 2.5 particles in the room; the indoor soundproof haze-absorbing panel can be cleaned by a common wet wipe, and is convenient to maintain and very suitable for ordinary families.

The invention discloses high-strength crack-resistant concrete. The main materials used in the concrete include the following raw materials, in parts by weight, 30 to 35 parts of stone, 8 to 10 partsof cement, 20 to 23 parts of sand, 5 to 6 parts of water, 0.3 to 0.5 part of water reducing agent, and 2 to 3 parts of fly ash. The auxiliary materials used in the concrete include the following raw materials, in parts by weight, 8-10 parts of expanded polystyrene granules, 2-4 parts of lignocellulose, 3-4 parts of polypropylene fiber, 4-6 parts of fluororubber, 2-4 parts of quartz sand, 6-10 parts of feldspar, 0.2-0.6 part of sodium silicate, 4-8 parts of boric acid, and 2-3 parts of sodium hydrogencarbonate. According to the invention, the tensile strength of the whole concrete can be enhanced and the concrete can be prevented from breaking by adding the glass wool fiber into the raw materials, and with addition of expanded polyphenyl granules, lignocellulose, polypropylene fiber and fluororubber, the elasticity of the concrete is increased, and when subjected to strong impact, the concrete does not break immediately, thereby avoiding splashing after particle breakage.

An adaptive balancing mechanism of dual-head cement troweling machine includes a water tank, a screw support base, an adjusting screw, a sensor and controller, a counterweight, a stepper motor, an underframe, a guide rail, a guide rail support plate, limit plates, and a transmission member. The controller collects the weight change information of the water in the water tank in real time according to the operation process. Adjust the position of the counterweight in real time by the stepper motor and the adjusting screw to make the two trowel heads in adaptive dynamic balance to the ground pressure.

The invention relates to a cultivation method of traditional Chinese medicinal materials, and in particular relates to a cultivation method of honeysuckle. The method comprises the following specific technical measures of cultivating by using grape type hanging tendrils, i.e., erecting corresponding concrete poles between cultivation ridges of the honeysuckle, pulling steel wires between the concrete poles to form a cultivation trellis, and drawing the honeysuckle branches and tendrils to the cultivation trellis to form a grape type hanging tendril planting cultivation mode; meanwhile, digging X-shaped fertilization furrows for applying solid nutrient liquid fertilizer between two plants between the cultivation ridges of the honeysuckle; applying the conventional fertilizer and additionally applying solid nutrient liquid fertilizer according to the conventional management method to realize proper water and fertilizer application and management and guarantee the high and stable yield of the honeysuckle. By implementing the method, the three-dimensional space can be fully utilized in the grape type hanging tendril planting cultivation mode, ventilation and transmittance are realized, high yield and quality of the honeysuckle are realized, and flower picking and trimming are also facilitated. The cultivation method is extremely suitable for large-scale intensive planting cultivation of the honeysuckle.

The invention discloses corrosion-resistant thermal insulation mortar which is characterized by being prepared from the following raw materials in parts by weight: 320-380 parts of cement, 200-250 parts of kaolin, 220-260 parts of waste incinerator slag, 100-140 parts of quick lime, 210-260 parts of waste glass slag, 140-190 parts of coarse sand, 7-9 parts of glass fiber, 9-12 parts of 0.5-5mm wood fiber, 60-90 parts of wood saw powder, 60-80 parts of tobacco straw, 3-7 parts of polyvinyl acetal and 4-6 parts of auxiliaries. The thermal insulation mortar prepared by the invention is low in heat conductivity coefficient, stable in thermal insulation property, high in compressive strength, corrosion-resistant, anti-aging and suitable for thermal insulation of various walls.

The invention discloses a building structure combining foaming cement and lightweight steel, comprising a lightweight steel framework and foaming cement. The lightweight steel framework comprises a wall, roofs and floors which are mechanically fixed into an integral structure, outer plates are respectively arranged at both sides of the roof, and the foaming cement is cast between the outer boards. By adopting the building structure, the invention can improve the bearing effect and the quake-proof performance of a building system, eliminate cold and hot bridges and decrease the building cost.