191results about How to "Good construction performance" patented technology

The invention belongs to the technical field of road engineering materials, and discloses a wide-temperature-range crack pouring adhesive based on rubber modified asphalt and a preparation method thereof.The wide-temperature-range crack pouring adhesive is prepared by taking the rubber modified asphalt as a matrix through a response surface method and adding SBS, basalt fibers and a modifier. The performance of the material is tested through a conventional test, and meanwhile, a test with more characteristics in northeast regions is provided, and the performance of the material is detected through injection depth, viscosity, low-temperature stretching after aging and freeze-thaw cycle stretching. Results show that a test designed by a response surface method has very strong reliability, and the modified heating type crack pouring adhesive added with the basalt fiber can significantly improve the high and low temperature performance of the crack pouring adhesive, and also has good anti-aging performance and freeze-thaw cycle resistance. And the filling depth and the viscosity of the sealant are not obviously lower than those of the same type of sealant.

The invention discloses a toluidine red pigment for a building coating and a preparation method of the toluidine red pigment, and belongs to the technical field of pigment synthesis, adamantane is introduced into toluidine red, and the adamantane has a stable cage structure, so that the water resistance and acid and alkali resistance of the pigment are improved; in addition, the weather resistance and the thermal stability of the pigment can be improved, so that the durability of the toluidine red pigment for the building coating in an outdoor environment is improved; the cyclodextrin modified resin and the adamantane modified pigment can form a stable host-guest compound through a self-assembly effect, and the dispersity and covering power of the pigment are improved, so that the stability and construction performance of the pigment are improved; good application prospects are realized in the building field.

The invention provides ultra-high performance concrete and a preparation method thereof, and belongs to the technical field of building materials. The concrete is prepared from cement, silica fume, mineral powder, fly ash, coarse sand, fine sand, a high-performance water reducing agent, a defoaming agent, a retarder, water, steel fibers, modified nano-silica sol and a wetting agent. Wherein the modified nano silicon dioxide sol is prepared by the following method: reacting a double-bond-containing silane coupling agent with unsaturated olefine acid to obtain a carboxyl-containing silane coupling agent, and then performing graft modification on the nano silicon dioxide sol by using the carboxyl-containing silane coupling agent to obtain the modified nano silicon dioxide sol. The concrete disclosed by the invention is compact in internal structure, ultrahigh in compressive strength and breaking strength and high in durability and impact resistance, and the compressive strength during normal-temperature curing is stabilized to be 200MPa or above.

The FEBD seamless bridge deck connecting plate adopting the T-shaped shear nail structure comprises a semi-continuous UHPC bridge deck connecting plate arranged on the upper side of a telescopic gap at the beam end in a striding mode, and a polyurethane pavement layer used for bearing vehicle loads is laid on the upper side of the semi-continuous UHPC bridge deck connecting plate. T-shaped shear nails are arranged between the polyurethane pavement layer and the semi-continuous UHPC bridge floor connecting plate. According to the connecting plate, the seamless bridge floor can be realized, and the diseases such as pavement layer disengagement and hemming caused by large deformation difference when wheels pass through the expansion joint are obviously relieved; and in addition, the complex space stress state of the bridge deck can be better adapted, the normal use requirement of the bridge deck continuous structure is met, the construction period is effectively shortened, and the influence on traffic is small.

The invention discloses a permeable concrete pavement permeability testing device, which relates to the technical field of concrete testing, and comprises a sample upper fixing seat, a sample lower fixing seat, a sealing cover, a water collecting cover, a water storage pipe and a flow meter. A water supplementing pipe is arranged above the water storage pipe, a floating ball is arranged at the bottom end of the water supplementing pipe, a movable pipe is arranged at the top end of the floating ball through a connecting rod, and a fixed pipe is arranged on the outer side of the movable pipe; a flow guide groove and a connecting groove are formed between the movable pipe and the fixed pipe, when the floating ball moves downwards due to the fact that the liquid level in the water storage pipe is lowered, the flow guide groove is communicated with the connecting groove, water in the water supplementing pipe can enter the water storage pipe and the water collecting cover, then the porosity of a sample can be measured, and the water permeability performance of the sample under different stable water pressures can be tested. And support is provided for large-area construction of the pervious concrete, so that a better construction effect is achieved.

The invention discloses hydrophobic modified unsaturated polyether for a polycarboxylic acid water reducer and a preparation method thereof, and the preparation method comprises the following steps: mixing vinylphenol substances, an organic amine catalyst and a polymerization inhibitor, under the protection of inert gas, heating to 60-90 DEG C, introducing ethylene oxide gas, and then curing for 10-60 minutes; cooling to 40 DEG C or below, adding a catalyst, heating to 100-130 DEG C under the protection of inert gas, continuously introducing ethylene oxide gas, and then curing for 10-60 minutes; adjusting the pH value of the reaction system to 7-9; unsaturated double bonds in the hydrophobic modified unsaturated polyether are connected with a benzene ring, compared with EPEG polyether, the charge environment of the double bonds is greatly improved, the activity of the double bonds is improved, the dropwise adding time of acrylic acid during synthesis of the polycarboxylate superplasticizer can be greatly shortened, the hydrophobicity of the benzene ring is high, the HLB value of the polyether can be reduced, and the hydrophobic property of the polyether is improved. Therefore, the viscosity of the concrete is reduced.

The utility model discloses an exterior wall real stone paint construction canopy, including canopy mechanism, and rolling motor and unrolling motor installed outside canopy mechanism, the bottom of canopy mechanism is provided with extension mechanism, and the top one side of extension mechanism is provided with extension motor, canopy mechanism includes first support plate and second support plate, the winding motor is fixedly installed on the outer side of the first supporting plate, the output end of the winding motor is fixedly connected with a winding roller, the outer side of the winding roller is evenly wound with rain shielding cloth, the end of the rain shielding cloth is fixedly connected with a balance weight rod, and the unfolding motor is fixedly installed on the outer side of the second supporting plate. By arranging the canopy mechanism, a winding motor can be used for driving a winding roller to rotate so as to wind the rain shielding cloth, meanwhile, an unfolding motor is used for achieving rotation of an unfolding driven roller so as to unfold the rain shielding cloth conveniently, and the rain shielding cloth can be vertically placed to protect the whole wall surface.

The invention provides a special anti-corrosion and wear-resistant coating for a heat exchanger and a preparation method thereof, and relates to the technical field of coating processing, and the special anti-corrosion and wear-resistant coating comprises the following components in parts by mass: 10-20 parts of epoxy resin, 25-35 parts of polyurethane resin, 10-25 parts of zinc powder, 18-38 parts of zinc phosphate, 8-18 parts of silicon carbide, 15-37 parts of aluminum oxide and 10-22 parts of an auxiliary agent. The coating is prepared through the following preparation steps that firstly, the raw materials are pretreated; 2, mixing and dispersing the pretreated raw materials; 3, grinding and refining the anti-corrosion pigment and the wear-resistant filler in the film forming substance; and 4, adjusting the viscosity, namely adding a proper amount of curing agent into the ground coating, slowly and uniformly stirring, and finally adjusting the viscosity of the coating by using a diluent according to the construction requirements of the coating. The epoxy resin and the polyurethane resin are used as film forming substances, so that a firm coating can be well formed, good adhesive force and chemical resistance are further provided, and the adhesive force of the coating is favorably improved.

The invention discloses a tundish cover castable, and relates to the technical field of tundish refractory materials. The tundish cover castable is prepared from the following raw material components in percentage by mass: 7.8 to 9.6 percent of alumina of 8 to 5mm, 2.6 to 4.3 percent of alumina of 5 to 3mm, 2.6 to 4.3 percent of alumina of 1 to 0mm, 17.4 to 20.8 percent of alumina of 200 meshes, 9.6 to 13 percent of mullite of 5 to 3mm, 22.6 to 26 percent of mullite of 3 to 1mm, 9.6 to 13 percent of mullite of 1 to 0mm, 7 to 8.7 percent of mullite of 200 meshes, 2.6 to 3.5 percent of composite binding agent, 0.8 to 1.7 percent of aluminum silicate, 0.05 to 0.07 percent of SiC nanowire, 0.2 to 0.3 percent of aluminum titanate and the balance of water. The invention discloses a tundish cover castable which comprises the following components in percentage by weight: 0.4-0.7% of alumina micro powder, 0.08-0.11% of sodium tripolyphosphate, 2.6-3.5% of silica fume, 0.87% of steel fiber and 1.3-1.7% of high-alumina cement. Compared with a traditional process, the tundish cover castable has the advantages that the overall performance of the tundish cover castable is remarkably improved, the breaking strength and compression strength of the castable are effectively enhanced, the service life is remarkably prolonged, and the production cost is reduced. And the production cost is greatly saved, and the economical efficiency and the operation rate of continuous casting operation are improved.

The present invention relates to the technical field of waterproofing coiled materials, and discloses a composition for polyvinyl chloride waterproofing coiled materials, a polyvinyl chloride waterproofing coiled materials, and a preparation method and application thereof. The composition contains polyvinyl chloride, ethylene-vinyl acetate-carbon monoxide copolymer, a plasticizer, a filler, expandable microspheres, a crosslinking agent, and an antioxidant; relative to 100 parts by weight of polyvinyl chloride, the content of ethylene-vinyl acetate-carbon monoxide copolymer is 10-40 parts by weight, the content of the plasticizer is 35-50 parts by weight, the content of the filler is 20-55 parts by weight, the content of the expandable microspheres is 1-3 parts by weight, the content of the crosslinking agent is 1-3 parts by weight, and the content of the antioxidant is 0.1-0.4 parts by weight. The polyvinyl chloride waterproofing coiled material not only has strong tensile strength and elongation, but also has good waterproof function while being able to insulate and heat.

The invention discloses a precast pile stress release hole for a soft soil foundation and a construction method, and the method comprises the following steps: S100, drawing a plane layout diagram of the stress release hole according to the field condition, and carrying out hole site lofting on the plane layout diagram; s200, a site hole site is determined according to the plane layout diagram, after a drilling machine is in place, hole guiding is conducted through the drilling machine, construction is conducted in cooperation with a punching and pulling machine, and a pile casing is buried into the site hole site; s300, a drilling machine is used for conducting rotary excavating and drilling operation in the sequence from slow to fast till the drilled hole reaches the preset depth, and hole completion of the soil hole is achieved; s400, the structure of the stress release unit is optimized according to the hole completion size of the soil hole, and the specific size suitable for the field actual engineering geology is determined; s500, the punching and pulling machine is used for being aligned with the center of the soil hole to hoist the stress releasing unit into the soil hole, and the stress releasing unit is controlled not to float upwards; and S600, the steel casing is slowly pulled out through vibration of a beating and pulling machine, and a cover plate is manufactured through a formwork batten to protect the hole opening of the stress release hole. And the problem of soil squeezing effect of the soft soil foundation is solved.

The invention provides an aerogel composite sheet which comprises an upper base material, an aerogel heat insulation coating and a lower base material which are sequentially bonded from top to bottom, the upper base material and the lower base material are both glass fiber felts or pre-oxidized fiber felts, and the aerogel heat insulation coating is prepared from the following components in parts by weight: 65-85 parts of aerogel slurry, 5-10 parts of a flame retardant and 5-10 parts of a binder. 0.5-1 part of an opacifying agent and 5-10 parts of phase change microcapsules. The invention also provides a preparation method of the aerogel composite sheet. The aerogel composite sheet provided by the invention has relatively good heat-insulating property and flame-retardant property.

The invention provides a large-section wide-width cast-in-place box girder hanging basket suspended pouring system and a construction method. The system mainly relates to a hanging basket, a counter-force frame, a pre-pressing jack, a stress base, a walking device, a box girder, a synchronous walking width-adjustable truss inner mold, a suspended pouring box girder intelligent maintenance device and the like. According to the large-section wide-width cast-in-place box girder hanging basket suspended pouring system and the construction method, the construction efficiency of a large-section wide-width cast-in-place box girder is greatly improved, meanwhile, the construction efficiency is improved, the construction cost is reduced, the influence on traffic is reduced, and the construction quality and safety are improved.

The present invention discloses a photothermal conversion super-hydrophobic wind turbine blade surface protective coating and a preparation method thereof. The coating is mainly composed of a fluorinated silicone waterborne polyurethane-fluorinated acrylate dispersion modified by a photothermal conversion modified nano slurry. On the one hand, the dispersion effect of the photothermal conversion nano slurry is improved. On the other hand, the evenly dispersed photothermal conversion nano particles ensure the photothermal conversion effect of the super-hydrophobic wind turbine blade surface protective coating coating, making the surface moisture of the coating easy to volatilize and difficult to freeze. Even if it freezes, it has the advantage of being easy to melt and drip. Compared with the wind turbine blade surface protective coating with a single function and an insufficient anti-icing effect on the current market, the photothermal conversion super-hydrophobic wind turbine blade surface protective coating of the present invention has a particularly outstanding anti-icing effect, and the ice adhesion is as low as below 20kPa; at the same time, the coating also has the advantages of simple and easy process, environmental protection, resistance to wet and heat aging and ultraviolet aging, acid resistance, and safe use.

The invention discloses a weather-resistant self-cleaning coating as well as a preparation method and application thereof, and belongs to the technical field of coating preparation. The self-cleaning coating is prepared from 50-70 parts of deionized water, 20-28 parts of protective glue, 20-35 parts of hydroxyethyl cellulose, 18-25 parts of latex, 5-8 parts of a preservative, 3-7 parts of a dispersing agent, 4-7 parts of a wetting agent, 1-2 parts of a defoaming agent, 3-5 parts of pigment filler, 3-5 parts of a coalescing agent and 2-4 parts of a thickening agent. The latex is composed of silicone acrylic latex and pure acrylic latex. By adding the raw materials with nano structures, a concave-convex shape similar to a lotus leaf is formed in the drying and film-forming process of the coating, so that dust particles are attached to the surface of the coating and are in a suspended state, and meanwhile, the contact angle between water and the surface of the coating is increased, so that water drops can roll down on the surface of the coating. In addition, hydrophobic substances are introduced into the solution, so that the coating is automatically layered in the drying and film forming process, a hydrophobic layer is enriched on the surface of the coating, it is guaranteed that the adsorbed polluting particles are separated from the surface of the coating under the scouring of wind and rain, and the self-cleaning purpose is achieved.

The invention relates to the technical field of latex powder, and discloses flexible vinyl chloride-vinyl acetate-acrylic waterproof latex powder and a preparation method thereof, and the flexible vinyl chloride-vinyl acetate-acrylic waterproof latex powder is prepared from the following components: a vinyl chloride-vinyl acetate-acrylic emulsion, a polyvinyl alcohol aqueous solution, an organic siloxane dispersion liquid, an organic silicon powder waterproof agent, an anti-caking agent and an inorganic filler. According to the invention, the redispersible latex powder with excellent performance is successfully prepared by carefully selecting and adjusting the type and dosage of the organosiloxane and the type of the anti-caking agent and accurately setting the temperature of the drying tower. When the latex powder is applied to the field of constructional engineering, the waterproof performance and durability of mortar can be remarkably enhanced, and wide application potential is shown.

The utility model discloses a temporary supporting structure for construction of a profiled steel sheet floor. The temporary supporting structure comprises an H-shaped steel beam, a profiled steel sheet, a transverse wood square column, a vertical wood square column and an inclined strut, the two H-shaped steel beams are symmetrically arranged in the height direction of a building floor; the two ends of the profiled steel sheet are bolted to the upper ends of flange plates of the two H-shaped steel beams through studs; the plurality of transverse square wood columns are supported between the two H-shaped steel beams, and the top surfaces of the transverse square wood columns abut against the bottom surface of the profiled steel sheet; the upper end faces of the vertical square wood columns are supported on the bottom faces of the transverse square wood columns in a one-to-one correspondence mode, and the lower end faces of the vertical square wood columns abut against the top face of a lower flange plate of the H-shaped steel beam; the two end faces of the inclined strut are fixed to the side wall, opposite to the web of the H-shaped steel beam, of the vertical wood brace and the bottom face of the transverse wood brace correspondingly. The temporary supporting structure has the advantages of being high in flexibility, economical, efficient, good in bearing capacity and reliable in quality, construction is easy, convenient and fast, and the construction cost is reduced.

The invention relates to the field of constructional engineering materials, in particular to a preparation method of multi-active-center synergistic flow-state solidified soil, which ensures the uniformity and stability of materials by accurately controlling the particle size of construction waste and the proportion of high-temperature treated sludge. The construction waste is mixed with the high-temperature sterilized sludge, so that the fluidity and self-compaction of the solidified soil are improved, the construction period is shortened, the cost is reduced, and the environmental pollution is reduced. The FAU / carbon composite material enhances the early strength and bearing capacity of the solidified soil, shortens the solidification time and enhances the impermeability. The montmorillonite soil improves the workability and environmental adaptability of the solidified soil, absorbs excessive moisture, reduces shrinkage and cracking, and improves the freeze-thaw resistance. Through the synergistic effect of the two components, stress transmission and dispersion are promoted, effective transmission of heat is improved, the mechanical property and the heat-conducting property of the fluid-state solidified soil are enhanced, the engineering efficiency and the environmental adaptability are improved, and an economical and practical solution is provided for the engineering environment.

The invention relates to the field of magnesium phosphate cement-based materials, and particularly discloses an interface-enhanced emulsified asphalt composite magnesium phosphate cement repairing material and application thereof. The repairing material comprises the following components in parts by weight: 400-600 parts of a magnesium phosphate cement-based material, 50-150 parts of emulsified asphalt, 5-10 parts of a toughening organic component, 10-15 parts of an optimizing agent, 8-20 parts of an interface reinforcing agent, 4-10 parts of chemically modified fibers and 80-100 parts of mixing water. The magnesium phosphate cement-based material comprises the following components in parts by weight: 150-300 parts of magnesium oxide powder, 70-150 parts of phosphate and 10-30 parts of a retarder. According to the invention, demulsification of the emulsified asphalt and hydration of the magnesium phosphate cement can be coordinated and matched with each other, the bonding capacity between the repairing material and a repairing interface can be enhanced, and the mechanical property of the repairing material is improved.

The invention relates to the technical field of road asphalt modification, in particular to an asphalt modifier containing polyethylene and an asphalt mixture prepared from the asphalt modifier. The asphalt modifier containing polyethylene comprises the following components in parts by weight: 8-15 parts of matrix asphalt, 30-50 parts of coal liquefied asphalt, 30-50 parts of pretreated rubber powder, 1-4 parts of a solubilizer, 1-4 parts of a plasticizer and 2-4 parts of waste polyethylene plastic. The asphalt modifier containing polyethylene also comprises a component A: 0.3-3.0 parts by weight of modified basalt fiber. The asphalt modifier containing polyethylene is prepared through a mixing technology, compared with a traditional modifier, basic raw materials of the asphalt modifier are completely derived from solid waste resources, resource utilization of waste is achieved, and the preparation process is simplified.

The invention relates to a two-component hot-pressing adhesive as well as a preparation method and application thereof. Comprising a component A and a component B. The component A comprises the following components in parts by weight: 150 parts of castor oil, 50-120 parts of polyether polyol, 150-300 parts of calcium carbonate, 0.5-5 parts of fumed silica, 0.5-5 parts of a surfactant, 0.01-0.5 part of a catalyst and 10-30 parts of an auxiliary agent, and the addition amount of the fumed silica in the hot-pressing adhesive is 0.1-0.4 wt%; and the component B comprises an isocyanate curing agent. The addition amount of the fumed silica in the hot-pressing adhesive is 0.1-0.4 wt%, so that the bonding performance between a metal plate and a porous cement plate and between the metal plate and a paper honeycomb can be improved, and the bonding requirement of a fireproof door is met; the organic tin catalyst is a stannous ricinoleate catalyst, the hot pressing time can be shortened to be within 6 min, and meanwhile the tensile shear strength can be improved to 4 MPa.

The utility model provides an environment-friendly light-weight fast-assembly easy-to-manufacture plastic formwork which comprises a main plate, the main plate is a plate making contact with a pouring material, the main plate can be in any shape, and opposite wire drawing holes are formed in the main plate according to needs; the side plate is a plate connected to the periphery of the back face, making contact with the pouring material, of the main plate, holes are formed in the side plate according to needs, and the side plate is provided with opposite-pull piece grooves according to needs; the rib plates are plates connected between the side plates, and a plurality of rib plates can be longitudinally and transversely arranged according to the size and the shape of the main plate. The utility model provides an environment-friendly light-weight quick-mounting easy-to-manufacture plastic template. The problems that in the prior art, energy consumption is high, carbon dioxide emission is large, the self weight is high, the initial cost is high, a release agent needs to be brushed, a mold needs to be manufactured firstly, materials need to be smelted, a large amount of wood needs to be consumed, on-site cutting is needed, formwork supporting and disassembling are inconvenient, and the construction effect is not ideal are solved. The manufacturing and using cost is reduced, and the construction effect and efficiency are improved.

The invention belongs to the technical field of high polymer materials, and particularly relates to organic silicon modified polyurethane polystyrene foam as well as a preparation method and application thereof. The polystyrene foam comprises a component A and a component B, the component A is prepared from 40 to 60 parts of polyethylene oxide polyol, 25 to 35 parts of cashew nut shell oil polyol, 15 to 25 parts of castor oil modified polyol, 5 to 10 parts of modified resin A, 18 to 22 parts of flame retardant filler, 0.5 to 1.5 parts of foam stabilizer, 0.1 to 0.2 part of catalyst and 0.4 to 0.9 part of pure water; the modified resin A is organic silicon modified resin which contains active amido and has alkoxy at the tail end; and the component B comprises the following components in parts by weight: 75-85 parts of polymerized MDI and 15-25 parts of prepolymer A. According to the invention, an organic silicon chain segment is connected into a polyurethane network in a chemical bond manner, so that high tensile strength and high bonding strength are maintained while the elongation at break is improved, and the technical problem that the performance of the polyurethane polystyrene foam is difficult to consider at the same time is solved.

The application relates to a reinforcing device for the bottom of a beam with a special-shaped section and a reinforcing method, the device comprises a supporting assembly and a frame assembly; the supporting assembly comprises an upwardly-inclined supporting rod, the top end of the supporting rod is connected to the lower surface of the frame assembly; the frame assembly comprises a stress plate and a plurality of U-shaped plates connected above the stress plate, the stress plate is arranged along the length direction of the beam, and the lower surface of the stress plate is fixedly connected with the top end of the supporting rod. The method can quickly reinforce the bottom of the beam, the supporting plate and the stress plate are only needed to be fixed, then the position of each U-shaped plate is adjusted by using a jackscrew, the bottom of the beam can be supported, the steps are compact, the implementation effect is good, the amount of used molds is reduced, and the construction cost is lowered.

A high-altitude spraying device for a steel structure building comprises a control center base, a first base and a second base, a control terminal is installed in the center base, a spraying component is installed on the side, away from a working face, of the center base, a cavity is formed in the center base, and a first telescopic rod is arranged in the cavity in a matched mode; the center base is movably connected with the first base and the second base through the first telescopic rod, grooves are formed in the sides, close to the working face, of the center base, the first base and the second base, supporting plates are arranged in the grooves, electromagnets are installed on the sides, close to the working face, of the supporting plates, and the other sides of the supporting plates are connected with one ends of springs. The other end of the spring is connected with the inner surface of the groove away from the working surface; the device can be stabilized and moved on the surface of the steel structure without additional auxiliary parts through the cooperation of alternate on-off of the electromagnets and the telescopic rods, use is simpler and faster, and compared with traditional manual spraying operation, the construction efficiency is higher, and the construction effect is better.

The invention discloses a water-based single-component coating as well as a preparation method and application thereof, and belongs to the technical field of coatings. The water-based single-component coating provided by the invention is prepared from the following raw materials in parts by mass: 30 to 70 parts of water-based emulsion, 1 to 10 parts of cross-linking agent, 0.5 to 5 parts of dispersing agent, 1 to 20 parts of functional additive, 10 to 50 parts of pigment and filler, 0.001 to 1 part of functional pigment and 2 to 20 parts of water, the water-based emulsion comprises at least one of a water-based acrylic emulsion, a water-based polyurethane modified acrylic emulsion or a water-based polyurethane emulsion; the cross-linking agent is selected from a zirconium cross-linking agent which does not contain ammonium or amine; the dispersing agent comprises an acrylic polymer dispersing agent, a modified acrylic polymer dispersing agent or a combination of the acrylic polymer dispersing agent and the modified acrylic polymer dispersing agent. According to the invention, the zirconium cross-linking agent which does not contain ammonium or amine is adopted, can react with tannic acid permeated from wood or woodware, and can also react with residual carboxyl in a water-based emulsion system to form good cross-linking property, so that the sealing property of a paint film is greatly improved, and the problem of yellowing of the paint film is solved.

An inorganic high temperature resistant grouting material and a preparation method thereof The present invention provides an inorganic high temperature resistant grouting material, wherein the components and mass fractions in the inorganic high temperature resistant grouting material are: 30-35 parts of high temperature resistant cement, 30-40 parts of plate-shaped corundum, 13-18 parts of quartz sand, 4-8 parts of calcium sulfate whiskers, 0.10-0.15 parts of water reducer, 0.01-0.06 parts of defoamer, 0.01-0.06 parts of plastic expansion agent, 9-14 parts of silica sol, 0.5-1.0 parts of water-based graphene slurry, and 3-7 parts of water. After curing, the grouting material has a smooth surface, no bulging, no cracking, and no powdering, and can be used for a long time at a high temperature of 500°C.

The invention provides a method for optimizing a double-component solvent-free brush coating type transparent waterproof polyurea formula, and belongs to the technical field of polyurea formulae, the method for optimizing the double-component solvent-free brush coating type transparent waterproof polyurea formula comprises the following steps: collecting data of a plurality of swimming pool operation environments; obtaining multi-mode fingerprint data of each raw material in the polyurea formula; the method comprises the following steps: establishing a swimming pool use environment parameter model according to swimming pool operation environment data, and selecting a plurality of formulas with optimal swimming pool waterproof performance indexes by utilizing a swimming pool waterproof material quantitative structure-activity relationship chemical model and a pre-trained swimming pool special waterproof performance prediction model to generate performance vectors; performing an accelerated aging test in a laboratory simulation swimming pool environment; selecting a formula closest to a performance vector required by the preset two-component solvent-free brush coating type transparent waterproof polyurea for the swimming pool; and carrying out field test in a real swimming pool environment by adopting the optimized formula to obtain a final formula.

This utility model discloses a prefabricated modular formwork device for circular concrete structures, belonging to the field of municipal engineering construction. The device includes an arc-shaped formwork, edge reinforcing members, arc-shaped support members, and tie bolts. The arc-shaped formwork is made of laminated plywood and has an arc that matches the circular structure. Adjacent arc-shaped formwork panels are spliced ​​together through an edge-fitting connection structure to form inner and outer ring-shaped formwork. The edge reinforcing members are placed between the arc-shaped formwork and the arc-shaped support members to improve the overall rigidity of the formwork. The arc-shaped support members include inner and outer arc-shaped steel pipe keels for providing support and shaping constraints. Several tie bolts penetrate the inner and outer formwork and support members to achieve overall locking and positioning. This invention combines factory-prefabricated processing of the arc-shaped formwork with on-site modular assembly, offering advantages such as lightweight structure, quick assembly, high forming accuracy, and reusability, significantly improving the construction quality and efficiency of circular concrete structures.

The invention relates to the technical field of new materials, and discloses a high-elasticity grouting material and a preparation method thereof.The method comprises the steps that after an acrylate mixture and triethanolamine are stirred to be evenly mixed, methyl methacrylate, styrene, vinyl trichlorosilane and N-hydroxymethyl acrylamide are sequentially added for stirring; adding an initiator and continuously stirring to promote the polymerization reaction; gradually adding heavy calcium carbonate, aluminum oxide and nano silicon dioxide, ensuring uniform distribution of the filler, adding butyl acrylate and hydroquinone, adding a defoaming agent and a dispersing agent, and continuously stirring to remove bubbles and ensure uniform distribution of the filler, so as to obtain a mixture; and pouring the mixture into a mold for curing to obtain the high-elasticity grouting material. The high-elasticity grouting material disclosed by the invention has excellent mechanical properties and durability, and is suitable for crack repair, water prevention, sealing and the like of various constructional engineering.