115results about How to "Improve reinforcement" patented technology

The invention discloses white super-wear-resistant soft rubber and a preparation method thereof, and belongs to the field of rubber preparation. The rubber is at least prepared from the following raw materials: 50-90 parts of natural rubber, 10-50 parts of butadiene rubber, 4-5 parts of zinc oxide, 1.8-2.5 parts of stearic acid, 1.0-1.2 parts of an anti-aging agent, 20-50 parts of carbon black, 10-50 parts of precipitated white carbon black, 10-50 parts of fumed white carbon black, 3-6 parts of a silane coupling agent Si69, 1-3 parts of a rubber dispersant WB16 and 2-5 parts of light-colored naphthenic oil. 0.8 to 1.2 parts of an accelerant and 0.8 to 1.2 parts of sulfur. According to the invention, the carbon black, the precipitation method white carbon black and the gas phase method white carbon black are adopted to reinforce the soft rubber, the interaction relationship between the fillers and the rubber and the interaction relationship between the fillers are balanced, and the silane coupling agent Si69 and the rubber dispersing agent WB16 are matched, so that the carbon black and the white carbon black have good dispersion fluidity in the rubber; the problems that traditional wear-resistant rubber is usually hard, inconvenient to process and produce, limited in industrial application scenarios and the like are solved.

The invention provides a reinforcing device for a fabricated steel structure column and a construction method thereof.The reinforcing device comprises a bottom unit detachably connected with the ground through a connecting piece, the bottom face of the steel structure column is pressed on the bottom unit, and the bottom unit is provided with a clamping assembly used for being supported on the inner wall of the steel structure column; reinforcing units used for being clamped to the outer wall of the steel structure column are arranged on the two sides of the clamping assembly correspondingly, the height of each reinforcing unit is adjusted through a vertical driving assembly, and the distance between the two reinforcing units is adjusted through a transverse driving assembly. The bottom face of the steel structure column is completely attached to the bottom unit, the contact area of the bottom face of the steel structure column and the ground is indirectly increased, and therefore the overall stability of the steel structure column during installation and use is improved. The reinforcing positions of the reinforcing units and the steel structure columns are adjusted through the vertical driving assemblies, reinforcing of the reinforcing units and the steel structure columns with different inner diameters can be adjusted through the transverse driving assemblies, the application range is wide, and operation is accurate.

The invention belongs to the technical field of wearable electronic products, and discloses impact simulation equipment and an impact test method. The impact simulation equipment comprises an impact table and a release device, the release device comprises a workbench frame, a rotating shaft, a connecting assembly and a swing rod, the connecting assembly comprises a shaft fork and a vertical shaft arranged on the shaft fork, the rotating shaft is rotatably arranged on the workbench frame, the shaft fork can rotate around the axis of the vertical shaft, the vertical shaft is vertically connected to the rotating shaft, and the swing rod is arranged on the shaft fork. A tested product can be fixed on the swing rod, the swing rod can rotate around the axis of the swing rod for adjustment, and the swing rod can rotate around the axis of the rotating shaft under the action of gravity to drive the tested product to collide with the collision table. According to the impact simulation equipment, the tested product is adjusted by rotating or rotating the swing rod, so that the tested product can impact the impact table at any position and angle, the impact between the tested product and the ground can be accurately simulated when a user dynamically falls down, and the test accuracy and reliability are greatly improved.

The invention belongs to the technical field of assistants for silicone rubber, and particularly relates to an antibacterial mildew-proof coloring agent for a silicone adhesive and a preparation method of the antibacterial mildew-proof coloring agent. The preparation method comprises the following steps: (1) adding inorganic toner, silicate ester and dimethyl octadecyl [3-(trimethoxysilyl) propyl] ammonium chloride into a solvent, uniformly stirring and mixing, heating to 40-80 DEG C, then dropwise adding ammonia water, stirring for reaction, and performing vacuum drying after the reaction is completed to obtain quaternary ammonium salt modified TQ silicon resin coated inorganic toner; and (2) uniformly mixing and dispersing the obtained quaternary ammonium salt modified TQ silicon resin coated inorganic toner and hydroxyl silicone oil to obtain the antibacterial mildew-proof coloring agent for the silicone adhesive. According to the invention, quaternary ammonium salt modified TQ silicon resin is used for coating and modifying the inorganic toner, so that the coloring effect can be obviously improved, and the silicone adhesive is endowed with obvious antibacterial and mildew-proof characteristics.

The invention provides a light, high-strength and low-rolling-resistance tire for a new energy automobile and a preparation method of the light, high-strength and low-rolling-resistance tire, and relates to the technical field of tires. The light, high-strength and low-rolling-resistance tire for the new energy automobile comprises a tread and a sidewall, wherein the tread and the sidewall are both composed of tread rubber comprising the following components: low-epoxy-degree epoxidized solution polymerized styrene-butadiene rubber with the epoxy degree of 6.5-8.4%, high-epoxy-degree epoxidized solution polymerized styrene-butadiene rubber with the epoxy degree of 21.2-23.7%, natural rubber, carbon black, white carbon black and a rubber additive. By optimizing the formula of the tread rubber, the lightweight of the tire is realized, the rolling resistance of the tire is effectively reduced, the strength and aging resistance of the tire are improved, and the service life of the tire is prolonged.

The invention discloses a treatment method for solidifying a karst cave filling body through microorganisms in the construction process of a pipe-following pile while drilling in a karst area. The treatment method mainly comprises a grouting hole, a grouting device, a grouting pipe, a high-pressure spray head and a tool pipe-following drilling machine while drilling, wherein the tool is matched with construction. According to the scheme, a reinforcing layer is formed on the inner wall of the karst cave through a method for solidifying karst cave cracks through microbial induction, and the karst cave is reinforced through pretreatment. The reinforcing layer formed through microorganism induction has good watertightness, it can be guaranteed that when cement paste is poured in the treatment process, the whole karst cave is fully filled with the cement paste, rubbles and clay components, and after the karst cave is pretreated and reinforced, the reinforcing layer penetrates through the karst cave to enable the pile bottom to reach the lower solid soil layer so that the bearing capacity of the pile bottom of the pipe pile while drilling can be guaranteed; and smooth proceeding of the construction process of the pipe pile while drilling is ensured, and a good reinforcing effect is achieved.

The invention discloses a high-wear-resistance rubber material and a preparation method, and belongs to the technical field of rubber materials, the high-wear-resistance rubber material comprises the following components by weight: 100 parts of fluorinated silicone rubber, 0.1-0.8 part of a vulcanizing agent, 10-35 parts of a filler, 1-5 parts of polytetrafluoroethylene powder, 1-10 parts of fluorinated graphene, 1-2 parts of a heat resistant agent, and 0.5-2 parts of a black dye. White carbon black is used as a filler, uniform dispersion of a reinforcing filler in a rubber matrix is realized by a mechanical blending method, the wear resistance of rubber is further improved by adding polytetrafluoroethylene and fluorinated graphene into the rubber matrix, and the wear-resistant and oil-resistant rubber sealing material is prepared. The material prepared by the invention is simple and convenient in processing technology, easy for industrial production, and excellent in mechanical property.

The invention provides a recycling method for waste tire pyrolysis residues. The recycling method comprises the following steps: S1, firstly carrying out wire drawing on waste tires; s2, the waste tires obtained after wire drawing are put into a crushing unit to be crushed; s3, the crushed waste tires are added into a pyrolysis processor; s4, carrying out water cooling on solid slag generated by pyrolysis of the old tire to obtain a primary carbon black material; s5, mixing the black primary material and a desulfurizing agent according to the mass; s6, washing: adding the crude carbon black into a granulating agent, and washing in a washing solution; s7, granulation: conveying the carbon black slurry into a granulator through a screw conveyor, extruding, forming and discharging; and S8, drying and discharging. S9, compounding the dried and discharged carbon black with water, a water reducing agent and cement; and S10, vibrating, stirring and forming.

The utility model relates to the technical field of ball type telescopic couplings, and discloses a ball type telescopic coupler which comprises a telescopic coupler body, one end of the telescopic coupler body is rotationally connected with a connecting installation head through a rotating shaft, and a movable telescopic rod extending to the outer side is installed in the telescopic coupler body in a matched mode. The device is provided with a stabilizing and reinforcing device, fixing between the rotating protective sleeve and the fixed protective sleeve can be conveniently completed, the inner walls of the rotating protective sleeve and the fixed protective sleeve are attached to the outer sides of the corresponding connecting shafts, reinforcing of the connecting part of the connecting column and the connecting mounting head is improved, and the stability after the connecting mounting head and the connecting shafts are mounted is improved; the device is provided with the connecting device, so that the outer side is reinforced after the rotating protective sleeve and the fixed protective sleeve are connected and fixed, and the stability of protecting and reinforcing the outer side of the connecting shaft by the rotating protective sleeve and the fixed protective sleeve is further ensured.

The invention discloses a method for reinforcing a vacuum preloading soft foundation by using a high-pressure sand blasting pile, which comprises the following steps: step 1, firstly leveling a site, then exploring the soft foundation, ascertaining a geologic structure in a soft soil foundation to be treated, and then paving a lower drainage cushion layer; step 2, measuring a discharge point, and placing a pile forming system in place; thirdly, a pile forming system is used, a hole is drilled in the pile forming point position, then high-pressure rotary jet grouting pile forming construction is conducted, and a high-pressure sand jet pile is constructed; fourthly, an upper drainage cushion layer is paved, a filter pipe is arranged in the drainage cushion layer, geotechnical cloth and a sealing film are paved on the drainage cushion layer, and the periphery of the geotechnical cloth and the sealing film are embedded into the impermeable stratum to seal the drainage cushion layer; 5, the filter pipe extends out of the geotechnical cloth and the sealing film through a film outlet device and is connected to a vacuumizing device; and sixthly, the vacuumizing device is started, and vacuum preloading drainage is conducted on the soft soil foundation.

The utility model discloses a stable rail transit door stand column cover which comprises a cover body, a first installation corner connector is integrally positioned at one end of the cover body, a second installation corner connector is integrally positioned at the other end of the cover body, a light composite aluminum plate is integrally formed on the surface of the outer side of the cover body, a handle is installed on the side of the cover body, and the light composite aluminum plate is arranged on the outer side of the cover body. A mounting plate is integrally positioned on the inner side of the cover body, a positioning hole is formed in the mounting plate, a positioning groove is formed in the second mounting corner connector, observation glass is clamped and positioned on the cover body, a charging panel is positioned and mounted on the outer side of the first mounting corner connector, and a reinforcing support is positioned and mounted on the inner side of the first mounting corner connector. According to the stable rail transit door stand column cover, the cover body is changed into an aluminum product, the cover body is not prone to sinking, more durable and stable, a charging interface is additionally arranged, use is convenient, reinforcing ribs are arranged in the cover body, the reinforcing effect is more excellent, and the service life of the cover body is prolonged.

This invention relates to a reusable, detachable, perforated reinforcement and sealing structure for pressure-resistant composite material hulls used in deep-sea equipment. The structure comprises: an outer sealing reinforcement component fitted and sealed to the outer circumferential surface of the hull at a first circular hole; an embedded, segmented sealing core positioned between the outer sealing reinforcement component and the inner side of the hull, fitting and sealingly sealing the first circular hole; the outer guide surface of the embedded segmented sealing core fitting with the outer sealing reinforcement guide surface of the outer sealing reinforcement component; an inner sealing reinforcement component positioned within the central through hole of the embedded segmented sealing core and the first connecting hole of the outer sealing reinforcement component; the inner sealing reinforcement component fitting and sealingly sealingly with the first connecting hole; the inner sealing guide surface of the inner sealing reinforcement component fitting with the inner guide surface of the embedded segmented sealing core; a locking structure reinforcement ring fitted and positioned inside the hull; and a locking sealing plug detachably and securely connected to the inner sealing reinforcement component. This invention is used for perforated reinforcement and sealing of pressure-resistant composite material hulls used in deep-sea equipment.

The utility model relates to furniture repair reinforcing technical field, propose a sofa seat repair structure, including second reinforcing plate, set up the first reinforcing plate of second reinforcing plate one end, one end fixed connection of first reinforcing plate and second reinforcing plate has the swivel rod, the first reinforcing plate and second reinforcing plate one end rotation connection of swivel rod surface has the connecting plate, one end of swivel rod penetrates the connecting plate, the adjusting assembly of assembly on connecting plate, the lifting assembly of assembly on first reinforcing plate and second reinforcing plate, through setting up swivel rod, connecting plate and adjusting assembly, make can change the inclination angle of connecting plate, avoid the cumbersome inconvenience needing to cut the both ends of existing reinforcing piece, and utilize lifting assembly can change the overall length of first reinforcing plate and second reinforcing plate, and then can make its support reinforcing of sofa seat frame crossbeam and longitudinal beam, it is convenient for user to carry out repair reinforcing operation more conveniently.

The invention relates to the technical field of truss reinforcing, in particular to an external prestressing tendon reinforcing truss structure and method capable of achieving multi-point local steering. The external prestressing tendon reinforcing truss structure comprises a steering device and a plurality of steering blocks which are perpendicular to the direction of a steel truss to be reinforced, fixedly arranged at the lower chord of the steel truss to be reinforced and exposed at the two ends; the fixing structures are symmetrically arranged above the two sides of the steel truss to be reinforced and are fixed; the two ends of the external prestressing tendon are anchored on the fixing structure, and the external prestressing tendon provides vertical force for the steel truss to be reinforced; the external prestressing tendons are symmetrically arranged on the two sides of the to-be-reinforced steel truss, the number of the external prestressing tendons is multiple, and each external prestressing tendon penetrates through the steering blocks of one or more steering devices and steers at the set steering devices; according to the invention, through the arranged steering devices, prestressing curve design is not needed, and the external prestressing tendons can be locally steered at different steering devices, so that the optimal reinforcing effect of the external prestressing tendons at the steering devices is realized.

The application discloses a kind of overburden separation zone reinforcement method of deformation sensitive structure goaf, including determining the boundary size and vertical height of overburden separation zone of goaf;Determine the boundary of blasting treatment of overburden separation zone of goaf;Design the amount of directional blasting explosive and the distance between explosive and the top of overburden separation zone, so that the rock and soil around explosive on the boundary of deformation sensitive structure foundation influence boundary is formed by directional blasting Throw pile;After the hole of hole drilling along the original blasthole distribution boundary to the original overburden separation zone bottom elevation and inject water reaction foaming polyurethane to form flow-plastic viscous liquid, flow-plastic viscous liquid rapidly diffuses along the upper and lower boundary of overburden separation zone and the interstice between original broken overburden separation zone accumulation block and forms blocking boundary;Deep grouting method is used to reinforce the cavity in blocking area.This method aims to reduce the disturbance of blasting on the upper soil layer and deformation sensitive structure, reduce the consumption of slurry, save engineering cost, and improve the treatment effect of goaf site.

A method for controlling deformation of an existing deep foundation pit paralleled by a shield tunnel at an ultra-close distance is provided. First, a servo steel support, a slag volume scanning device and a grouting bag are set up. Before the shield tunnel starts paralleling, a test section is established to control the soil bin pressure. When the shield tunnel is paralleled to the existing deep foundation pit, the excavation parameters are controlled, and the horizontal displacement is controlled by the grouting bag, the support axial force is adjusted by the support compensator to control the deformation, and the excavated volume is controlled by the slag volume scanning device. The method realizes active control of the deformation effect of the parallel deep foundation pit by controlling the excavation parameters, the servo support axial force control in the foundation pit, the bladder grouting control and the slag volume measurement control, ensuring that no large deformation and damage occurs. It has the characteristics of low cost, short construction period and good deformation control effect.

A layered step-by-step grouting method suitable for deep hole paste slurry pretreatment in karst area, comprising the following steps: construction preparation and measurement of line, according to the geological survey report to determine the grouting parameters, and according to the principle of one stake two holes to layout grouting hole; Grouting hole drilling construction, using the way of separate stake, sequence, according to the design depth of sub drilling; Grouting pipe layout and checking the grip force, put down the paste grouting pipe, and use the karst paste correction formula to calculate the grip force, to ensure that it is less than the pullout machine pullout force and grouting pipe yield strength; Karst shallow hole pretreatment grouting, low pressure grouting is carried out on the shallow karst layer of the set depth, forming a closed layer; Karst deep hole step-by-step grouting, after the curing of the shallow hole closed layer, using the way of sub grouting from top to bottom, step-by-step retreat grouting is carried out on the deeper karst layer; Grouting quality detection and supplementary grouting; Hole sealing acceptance.

The utility model discloses a masonry house foundation reinforcement and transformation structure, and belongs to the technical field of building reinforcement and transformation. Comprising an original brick strip-shaped foundation and an original masonry wall, concrete double connecting beams are poured on the two sides of the original brick strip-shaped foundation at the position of an anti-seismic wall, reinforced concrete surface layers are arranged on the two side faces of the original masonry wall at the position of the anti-seismic wall, and longitudinal steel bars and transverse steel bars are arranged in the reinforced concrete surface layers. Longitudinal steel bars on the two sides of the original masonry wall are connected together through stirrups arranged on the longitudinal steel bars, and through holes for the stirrups to penetrate through are drilled in the original masonry wall. An original masonry wall does not need to be dismantled at the position of the anti-seismic wall, only reinforced concrete surface layers need to be additionally arranged on the two sides of the wall body to form the sandwich wall, the common stress requirement of the structure can be met, the reinforcing purpose is achieved, construction is easy and convenient, the reinforcing effect is obvious, and the manufacturing cost is low. An original structure strip-shaped foundation does not need to be dismantled in anti-seismic wall foundation construction, the double connecting beams are arranged on the two sides of the strip-shaped foundation to serve as the anti-seismic masonry wall foundation, and the dismantling amount is small.

The utility model relates to the field of couplings, and discloses a diaphragm coupling. The connecting structure comprises a connecting piece and a right half shaft section, an adsorption magnetic block connecting block is fixedly installed on the surface of the right half shaft section, an adsorption magnetic block connecting groove is movably formed in the adsorption magnetic block connecting block, a left half shaft section is welded to the side face of the adsorption magnetic block connecting groove, and the adsorption magnetic block connecting groove is matched with the adsorption magnetic block connecting block in size; when the device is used, the adsorption magnetic block connecting groove is attached to the adsorption magnetic block connecting block, the overall stress of the diaphragm coupling is dispersed, the service life of the diaphragm coupling is prolonged, and an operator can conveniently install the diaphragm coupling. And the accommodating holes are well matched with the threaded holes, so that the right half shaft section and the left half shaft section are conveniently connected, and the phenomena of dispersion and falling are avoided under the high-speed operation of the diaphragm coupling.

The utility model discloses a post-tensioned prestressed concrete railroad bridge simply-supported beam which comprises a simply-supported beam body, four matching holes are formed in the simply-supported beam body and are divided into two groups, the two groups of matching holes are symmetrically formed relative to the simply-supported beam body, a fixing sleeve is fixedly connected to the interior of each matching hole, and the fixing sleeve is fixedly connected to the interior of each matching hole. A supporting column is arranged in the fixing sleeve, the lower end of the supporting column is fixedly connected with a limiting column, and the end, close to the center of the simply supported beam body, of the limiting column is fixedly connected with a limiting sleeve. In the utility model, the three pre-stressed plates are all made of corrugated steel materials, so that the pre-stress for improving the main body of the simply supported beam can be effectively provided, and the simply supported beam can be effectively reinforced, therefore, the problems of sinking, cracking and the like of old bridges and dangerous bridges can be solved, meanwhile, the bending-resistant and shearing-resistant bearing capacity of the bridges is improved, and the reinforcing effect is obvious.

The invention belongs to the technical field of protection of paper cultural relics, and particularly relates to hydrogel loaded with C-M dispersion liquid as well as a preparation method and application of the hydrogel. The preparation method comprises the following steps: preparing a sodium carboxymethyl cellulose aqueous solution, and stirring the solution until the solution is clear and transparent; preparing a nano magnesium hydroxide ethanol dispersion liquid; mixing the two solutions in equal volume, and uniformly stirring to obtain a C-M dispersion liquid; taking low-acyl gellan gum, gelatin and glycerol, adding distilled water, swelling for 30 minutes, adding calcium acetate to obtain a hydrogel solution, mixing the C-M dispersion liquid and the hydrogel solution, uniformly stirring, heating in a microwave oven for 3-5 minutes until the solution is in a clear and transparent state, transferring into a mold while the solution is hot, and cooling to obtain the hydrogel loaded with the C-M dispersion liquid.

The invention discloses plant fiber composite rubber and a preparation method thereof.The plant fiber composite rubber comprises a rubber matrix and plant fiber filler, the rubber matrix is composed of natural rubber and butadiene styrene rubber, the plant fiber filler is composed of linen fibers and bamboo fibers, and the plant fiber composite rubber comprises, by weight, 70-100 parts of natural rubber, 20-30 parts of linen fibers, 20-30 parts of bamboo fibers and 20-30 parts of linen fibers. The invention relates to the technical field of composite rubber preparation, and relates to the technical field of composite rubber preparation. The composite rubber is prepared from, by weight, 30-50 parts of styrene butadiene rubber, 10-15 parts of linen fiber, 5-10 parts of bamboo fiber, 58-76 parts of reinforcing filler, 2.5-5 parts of sulfur, 1.5-3 parts of accelerant CBS and 20-39 parts of additive. The linen fibers and the bamboo fibers have high strength and toughness, and the chopped glass fibers have high strength and modulus, are uniformly dispersed in the rubber and interact with a rubber matrix, so that the tensile strength and the tear strength of the rubber are improved, and the rubber can bear larger external force without being damaged.

The utility model relates to the technical field of building reinforcement, in particular to an anti-seismic reinforcing structure of a masonry structure prefabricated floor, which comprises a bearing wall and a prefabricated floor, and is characterized in that the bearing wall is perpendicular to the prefabricated floor to form a right-angle position, angle steel is attached to the right-angle position, and the angle steel is strip steel with two perpendicular sides and in a right-angle shape. The two sides of the angle steel are attached to the load-bearing wall and the prefabricated floor respectively, a reinforcing structure parallel to the two sides of the angle steel is arranged on the side, away from the load-bearing wall and the prefabricated floor which are attached to the angle steel, of the load-bearing wall, and a plurality of tie bolts penetrate between the reinforcing structure and the angle steel. According to the scheme, the problems that the prefabricated floor slab and the bearing wall body are not connected, and the prefabricated slabs collide with each other when an earthquake occurs can be solved.

The invention provides an automatic leveling control device based on a single-chip microcomputer, which structurally comprises a positioning plate, a leveling auxiliary block, an automatic leveler, a balance screw rod and a restraining plate, the upper layer of the positioning plate is overlapped with the lower layer of the leveling auxiliary block, and the upper end of the leveling auxiliary block is in contact with the lower end of the automatic leveler; the center of the rear end of the automatic leveler is connected with a balance screw, and one end of the balance screw penetrates through the center of the restraining plate. On the basis that the inclined plane at the upper end of the leveling auxiliary block is matched with the inclined plane at the lower end of the sliding block of the automatic leveler, the calibrator of the automatic leveler can be combined with the electric control box to drive the rotating wheel of the driving module to rotate, so that the rotating wheel drives the balance screw rod to rotate on the restraining plate, and therefore, the sliding block can stably slide on the leveling auxiliary block; after the position of the calibrator coincides with the horizontal plane, the driving module and the rotating wheel stop working, the characteristic of automatic leveling can be achieved, and then the accuracy during leveling can be improved.

The application discloses an ultra-high performance concrete for reinforcing an existing structure and a preparation method thereof. The ultra-high performance concrete for reinforcing the existing structure is composed of the following components in parts by weight: 370-500 parts of Portland cement, 340-560 parts of self-stress sulphoaluminate cement, 80-150 parts of silica ash, 80-120 parts of composite admixture, 0.24-0.4 parts of lithium salt, 5-8.4 parts of composite retarder, 900-1150 parts of quartz sand, 160-220 parts of steel fiber, 27-36 parts of water reducing agent and 142-192 parts of water. Compared with a traditional UHPC, the ultra-high performance concrete has the advantages of short setting time, high hourly strength, strong anti-interference performance and certain micro-expansion, can be self-compacted and free-vibrated after being poured in a narrow space between an existing structure and a formwork, can match a reinforcing construction window period, has high hourly strength after setting and hardening, plays a good anti-dynamic-load-disturbance-cracking role in the construction without interrupting traffic, and has appropriate expansion, so that the adhesion between the outer layer and the existing structure is further improved, the two are more closely combined, and the reinforcing effect is better.

The invention relates to a precipitated silica, characterized in that it has the following physico-chemical parameters: The precipitated silica according to the invention is produced by the following method: a) initial charge of an aqueous solution of organic and / or inorganic salts and / or alkali and / or alkaline earth silicates and / or organic and / or inorganic bases with pH > 9, b) simultaneous metering of water glass and acidifying agent to this initial charge while stirring at 80 to 98°C for 60 to 120 minutes, c) then stopping the addition of water glass and metering the acid only in smaller amounts than before in order to bring the pH of the mixture (measured at 60°C) to 9.0 to 10.0, d) then stirring the mixture at high temperature > 85°C for 45 minutes to 200 minutes without further addition of reactants, e) acidification using sulfuric acid to a pH of about 3.5 to 4.5 (measured at 60°C) and f) filtration, drying to < 8% loss on drying and then granulation of the mixture. The silica according to the invention can be used for the production of rubber mixtures, in particular for the production of tyres, cable sheaths, hoses, drive belts, conveyor belts, roller coverings, shoe soles, gasket elements and damping elements.

The utility model discloses a bearing beam joint reinforcing device, and relates to the technical field of bearing beams, and the bearing beam joint reinforcing device comprises a wall body, a reinforcing assembly is arranged at the bottom end of the wall body, a frame beam body is movably arranged in the reinforcing assembly, a supporting assembly is arranged at the bottom of the frame beam body, and the supporting assembly comprises a supporting column. The upper portion of one end of the supporting column is fixedly connected with a supporting seat, the top end of the supporting seat is fixedly connected with a motor, the output end of the motor penetrates through one end of the supporting column and is fixedly connected with a first bevel gear, the outer surface of the first bevel gear is in meshed connection with a second bevel gear, and the bottom end of the second bevel gear is fixedly connected with a lead screw. According to the reinforcing device, the supporting assembly is arranged, so that the reinforcing device can achieve the best reinforcing effect, and the reinforcing assembly is arranged, so that the bearing beam is very convenient to install when the bearing beam is reinforced.

The invention discloses a high-pressure sand blasting pile combined loading soft foundation compaction and drainage reinforcement method which comprises the following steps: step 1, firstly, leveling a site, then, carrying out soft foundation exploration, ascertaining a geologic structure in a soft soil foundation to be treated, and then, paving a lower drainage cushion layer; step 2, measuring a discharge point, and placing a pile forming system in place; thirdly, a pile forming system is used, a hole is drilled in the pile forming point position, then high-pressure rotary jet grouting pile forming construction is conducted, and a high-pressure sand jet pile is constructed; 4, paving a drainage cushion layer on the upper layer, and arranging a water filter pipe in the drainage cushion layer; 5, geotextile is laid on the drainage cushion layer, and a water filter pipe in the drainage cushion layer is led out and connected with a drainage system; and sixthly, stacking and loading materials on the geotechnical cloth step by step, and carrying out stacking and pre-pressing drainage on the soft soil foundation.