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200 results about "High strength concrete" patented technology
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High-strength concrete construction crack detection system and method
ActiveCN120352608ABiological modelsCharacter and pattern recognitionHigh strength concreteStructural engineering
The invention belongs to the technical field of concrete crack detection, and particularly discloses and provides a high-strength concrete construction crack detection system and method.The system comprises a multi-parameter cooperative sensing module, a construction crack recognition module, a crack risk analysis module and a crack early warning processing module. According to the invention, the temperature, humidity, strain and multispectral image data from a plasticity stage to a hardening stage are collected in real time through the multi-parameter cooperative sensing module, and crack characteristics are extracted by combining staged differential signal processing and a deep convolutional neural network, so that the detection precision of micro cracks and internal defects is remarkably improved. Meanwhile, multi-physics field data are fused, a crack evolution risk rate model is innovatively constructed, dynamic probability prediction before crack initiation is achieved, a grading disposal scheme is automatically triggered through risk grade division and a progressive early warning mechanism, drying shrinkage and temperature crack causes are effectively distinguished, the prevention and control efficiency is remarkably improved, and the method is suitable for large-scale popularization and application. And full-life-cycle accurate monitoring of the high-strength concrete is supported.
Owner:CCCC FIRST ENG & CONSTR RES INST CO LTD +1
Desert environment C60 high-strength concrete production control method
PendingCN119397886AImprove efficiencyImprove stabilityEnsemble learningArtificial lifeHigh strength concreteTemperature control
The invention relates to a desert environment C60 high-strength concrete production control method which comprises the following steps: establishing an intelligent temperature control system, stably maintaining the water temperature in summer at 25 DEG C or below through algorithm prediction and dynamic adjustment of the intelligent temperature control system, and monitoring and adjusting pre-cooling measures of aggregate and sand; a raw material temperature monitoring network is established, the raw material temperature monitoring network is deployed in a cement storage area, an aggregate storage yard and a water treatment area, data are collected in real time through the raw material temperature monitoring network, and an accurate basis is provided for a temperature control strategy; establishing a mix proportion dynamic adjustment algorithm: based on the collected temperature and humidity data, combining with a concrete performance model, automatically adjusting the proportion of cement, water, an additive and aggregate, and optimizing the performance of the concrete under different environmental conditions; a quality monitoring system of the whole process from mixing to pouring is established, concrete performance data are collected and fed back to the algorithm model, and the production process and the mix proportion design are continuously optimized.
Owner:POWERCHINA HUADONG ENG CORP LTD +1
U-shaped recycled concrete composite beam, and design and construction method therefor
PCT designated stage expiredWO2025103288A1Solid waste managementGirdersHigh strength concreteConcrete beams
A U-shaped recycled concrete composite beam, and a design and construction method therefor, the U-shaped recycled concrete composite beam comprising a prefabricated concrete casing (11) and cast-in-place compression-zone concrete (12), wherein the prefabricated concrete casing (11) is a recycled concrete casing, and has a U-shaped appearance; the cast-in-place compression-zone concrete (12) is high strength concrete, and the cast-in-place compression-zone concrete (12) is concrete with a strength grade of C50-C80; the thickness h1 of the bottom of the prefabricated concrete casing (11) is not less than 80 mm, and the widths b1 and b3 of lateral surfaces of the prefabricated concrete casing (11) are both not less than 45 mm; the width b2 of the cast-in-place compression-zone concrete (12) is not less than 100 mm; and a steel bar cage is provided in the U-shaped recycled concrete composite beam to serve as a framework. Compared with the prior art, the fire-resistant characteristic of recycled concrete and the excellent mechanical properties of high-strength concrete are fully exerted, the flexural bearing capacity and ductility of the recycled concrete beam can be effectively improved at room temperature, the bursting phenomenon of a fire-exposed surface is reduced at a high temperature, and the temperature field in the beam is significantly reduced.
Owner:TONGJI UNIV
High-strength concrete based on nano silicon and preparation method thereof
The invention provides nano-silicon-based high-strength concrete and a preparation method thereof, and belongs to the technical field of concrete.The concrete is prepared from cement, mineral powder, fly ash, machine-made sand, first-class gravel, second-class gravel, an additive, nano-silicon or a nano-silicon composite modified material and water; the additive is a polycarboxylic acid water reducer and / or a polyether air entraining agent. According to the prepared concrete, the nano silicon material with good dispersity is added, so that the cement consumption can be reduced, the cost can be reduced, and the workability, the strength and the durability can be improved; and the preparation process is simple and convenient, is suitable for large-scale production, and can be widely applied to the engineering fields of high-rise buildings, bridges, tunnels and the like.
Owner:SHANGHAI TONGSHUN CONCRETE CO., LTD
High-strength concrete material and preparation method thereof
PendingCN120554031ASolid waste managementMicroballoon preparationHigh strength concreteCrack resistance
The invention relates to the field of building material preparation, in particular to a high-strength concrete material and a preparation method thereof.According to the high-strength concrete material, through the synergistic effect of core-shell type temperature-sensitive resin particles, a pH response type expanding agent and industrial solid waste composite micro powder, multi-environment self-adaptive crack resistance and mechanical property breakthrough are achieved. The core component is prepared from 180 to 240 parts of cement, industrial solid waste composite micro powder (30 to 50 parts of fly ash-based nano SiO2 and 50 to 70 parts of steel slag micro powder), 10 to 15 parts of core-shell resin particles and 8 to 12 parts of pH response type expanding agent. According to the preparation process, multi-section intelligent stirring (ultra-high-speed shearing and dispersing of the nanometer material) and dynamic maintenance of the internet of things are adopted, the hydration process is precisely regulated and controlled, and the finally prepared material has excellent compressive strength and anti-cracking performance. The method is suitable for severe scenes such as ocean engineering and plateau buildings, and has wide application prospects.
Owner:SHENZHEN GUYI BUILDING MATERIALS CEMENT PROD CO LTD
High-strength concrete, well lid and preparation method of high-strength concrete and well lid
PendingCN119504205Aevenly dispersedgood adhesionArtificial islandsSolid waste managementHigh strength concretePtru catalyst
The invention discloses high-strength concrete, a well lid and a preparation method of the well lid, and relates to the field of building materials. The high-strength concrete comprises cement, coarse aggregate, fine aggregate, modified steel fibers, a polycarboxylic acid water reducer and water. Wherein the coarse aggregate comprises broken stones with the continuous grading of 5-8 mm and broken stones with the continuous grading of 10-16 mm; the fine aggregate adopts medium-coarse sand with the particle size range of 1.8-2.2 mm; the preparation raw materials of the modified steel fiber comprise an amino silane coupling agent, an epoxy resin coating and steel fiber, and the preparation raw materials of the epoxy resin coating comprise bisphenol A epoxy resin, nanoparticles, hydroxy acrylic resin, a tertiary amine catalyst and a curing agent. According to the modified steel fiber, the reinforcing effect of the steel fiber on a concrete matrix can be fully exerted, so that concrete which is high in pressure resistance and bearing capacity and especially suitable for well lid manufacturing is obtained.
Owner:GUANGDONG GUANGZE IND CO LTD
Preparation method of high-strength concrete
The invention relates to the technical field of concrete, and discloses a preparation method of high-strength concrete, which comprises the following steps: adding epoxy resin emulsion, cationic emulsified asphalt, aminopropyl acrylamide cardanol-based polystyrene and the like into water, shearing and dispersing, then adding cement, sand, fly ash and the like, stirring and mixing uniformly, vibrating and defoaming, curing and curing to obtain the high-strength concrete. The high-strength concrete is obtained. The aminopropyl acrylamide cardanol-based polystyrene disclosed by the invention contains an active imino group, can be subjected to a curing cross-linking reaction with epoxy resin to play a very good reinforcing role, and contains an alkenyl group, so that the aminopropyl acrylamide cardanol-based polystyrene can be subjected to a cross-linking reaction with unsaturated double bonds of asphalt at a high temperature to play a very good reinforcing role. The aminopropyl acrylamide cardanol-based polystyrene improves the compatibility between the epoxy resin and the cationic emulsified asphalt, improves the mechanical properties of the epoxy asphalt concrete, and shows higher axial compressive strength and compressive elastic modulus.
Owner:上海又宏环保科技有限公司
Two-stage road pavement structure for unstable roadbed
ActiveCN222648493Ueasy to useImprove bearing capacityIn situ pavingsHigh strength concreteArchitectural engineering
The utility model relates to a two-stage road pavement structure for an unstable roadbed, which is particularly suitable for an unstable area easy to settle and comprises a first-stage pavement structure and a second-stage pavement structure positioned behind the first-stage pavement structure for construction, wherein the first-stage pavement structure is provided with a pre-sedimentation pavement base layer and a prefabricated high-strength concrete interlocking block surface layer, the prefabricated high-strength concrete interlocking block surface layer is arranged on the pre-sedimentation pavement base layer, the second-stage pavement structure comprises a leveling layer and an asphalt surface layer, the leveling layer is located on the prefabricated high-strength concrete interlocking block surface layer, and the asphalt surface layer is located on the leveling layer. And the asphalt surface layer is positioned on the leveling layer. The utility model has the advantages of low manufacturing cost, high bearing capacity, good durability, convenience in construction, easiness in maintenance and replacement and strong adaptability to settlement deformation, and can fully ensure the use of the whole life cycle of the road; subgrade settlement is accelerated; construction is completed in a short time, and the influence on current traffic is small; dismounting and reconstruction are not needed, and resources are saved.
Owner:SHANGHAI URBAN CONSTRUCTION MUNICIPAL ENGINEERING (GROUP) CO LTD
Epoxy plaster for repairing high-strength concrete for electric power engineering
PendingCN119639407AImprove curing integrityGood weather resistanceNon-macromolecular adhesive additivesEpoxy resin adhesivesHigh strength concreteFirming agent
The invention discloses an epoxy plaster for repairing high-strength concrete for electric power engineering, which comprises a component A and a component B. The mass ratio of the component A to the component B is (8-12): 1. The component A comprises the following components in parts by weight: 35-50 parts of bisphenol A epoxy resin, 15-25 parts of multifunctional epoxy resin, 10-15 parts of a functional diluent, 20-40 parts of filler, 1-5 parts of a coupling agent and 1-3 parts of an auxiliary agent; the component B comprises the following components in parts by weight: 45-65 parts of hydrophobic amine modifier curing agent, 20-40 parts of filler, 1-5 parts of coupling agent, 1-5 parts of adhesion promoter and 1-5 parts of assistant. The epoxy plaster is a modified high-molecular high-strength repairing and protecting material, and has the advantages of high bonding force, high temperature resistance, durability, impermeability, impact resistance, compactness, extremely high bonding force and extremely strong waterproof effect.
Owner:CHANGSHA SUOKANG NEW MATERIAL TECH CO LTD
A quick-setting high-strength concrete and its preparation method
This invention relates to a rapid-setting high-strength concrete and its preparation method. The rapid-setting high-strength concrete comprises the following raw materials in parts by weight: 100-200 parts cement, 80-100 parts coarse aggregate, 40-60 parts fine aggregate, 10-20 parts rubber powder, 20-30 parts modified straw-based carbon powder, 0.3-0.5 parts coupling agent, and 0.6-0.8 parts water-reducing agent. The modified straw-based carbon powder is obtained by first adding straw powder to an activation solution containing aluminum sulfate, carboxymethyl starch, and triethanolamine, followed by activation, ball milling, and freeze-drying to obtain a precursor. The precursor is then mixed with flake aluminum powder and heated under an inert atmosphere to obtain the final product. The mass fraction of aluminum sulfate is 5-10%, the mass fraction of carboxymethyl starch is 5-10%, and the mass fraction of triethanolamine is 3-5%. This invention improves the rapid setting effect, compressive strength, flexural strength, and crack resistance of concrete by incorporating modified straw-based carbon powder into the concrete components. This is of great significance for improving the overall performance of concrete and developing infrastructure construction.
Owner:ANHUIWANKENEWSCIENCEANDTECHNOIOGYDEVELOPMENT CO LTD
Landfill-type lightweight high-strength concrete material and method for preparing the same
The application provides a kind of stack type light weight high strength concrete material and its preparation method.The application is filled in the mold by stacking ceramsite, and the ceramsite fills the mold in a close-packed manner;Then, according to the preset weight fraction, the cement, silica fume, saw mud, fly ash floating bead, hollow glass microsphere, fly ash, water reducing agent and water are weighed, and the high fluid light weight high strength mortar is obtained after fully mixing, and it is poured into the mold filled with ceramsite, so that the high fluid light weight high strength mortar fills the gap between the ceramsite, and the light weight high strength concrete material is obtained after curing. Through the above-mentioned manner, the application can prepare the high fluid light weight high strength mortar with slightly lower density than the ceramsite, to ensure that the pouring process will not appear the phenomenon of ceramsite floating, and effectively utilize the space skeleton formed by the mutual lap of ceramsite in the stacking process to effectively improve the strength of the concrete, so that the prepared stack type light weight high strength concrete material has low bulk density and high strength.
Owner:WUHAN CHUTIAN MINGYANG BUILDING MATERIALS CO LTD
Blast furnace slag flushing water chute and wear-resistant lining for chute
PendingCN121896402ARecycling and recovery technologiesWater-setting substance layered productHigh strength concreteSlag
The invention discloses a blast furnace slag flushing water chute and a wear-resistant lining for the chute, and relates to the technical field of blast furnace equipment, the water chute comprises a dry slag layer, a common concrete layer, a water slag cast iron lining and the wear-resistant lining; the common concrete layer and the grain slag cast iron lining layer are lower than the dry slag layer and higher than the wear-resistant lining layer; the bottom of the cross section of the wear-resistant lining is arc-shaped, and the radius R of the arc is more than or equal to 200mm and less than or equal to 400mm; the wear-resistant lining layer is provided with a sawtooth-shaped convex body; and a steel wire mesh is laid between the wear-resistant lining layer and the water slag cast iron lining layer. The wear-resistant lining for the chute is formed by mixing and pouring high-strength concrete and scrap iron filler according to the mass ratio of 1: (0.2-0.8), and the particle size of the scrap iron filler is 1-10 mm. The strength grade of the high-strength concrete is not lower than C60. The blast furnace slag flushing water chute can solve the problems that an existing blast furnace slag flushing water chute is poor in structural integrity, a chute lining is prone to abrasion and damage, maintenance is difficult, and cost is high.
Owner:GUANGXI ZHONGJIN METAL TECH CO LTD +1
Separating device for concrete with different strengths of plate-column joints
ActiveCN223317552UForms/shuttering/falseworksAuxillary members of forms/shuttering/falseworksHigh strength concreteClassical mechanics
Owner:CHINA NUCLEAR IND HUAXING CONSTR +1
High-strength concrete containing machine-made sand-river sand and preparation method thereof
The invention provides machine-made sand-river sand-containing high-strength concrete and a preparation method thereof, the machine-made sand-river sand-containing high-strength concrete comprises aggregates and an inorganic binder, the aggregates comprise fine aggregates and coarse aggregates, the fine aggregates comprise limestone machine-made sand and river sand, the coarse aggregates are broken stones, the inorganic binder comprises cement, water and a water reducing agent, the mass part of each component is 1740-1844, and the mass part of each component is 100-300. The concrete is prepared from the following components in parts by weight: 258 to 288 parts of limestone machine-made sand, 387 to 432 parts of river sand, 1095 to 1124 parts of gravel, 586 to 684 parts of inorganic binder, 146 to 150 parts of water, 5 to 6 parts of water reducing agent and 435 to 528 parts of cement. The T-beam concrete has good working performance and durability, and the calculated value of the rebound strength of the T-beam can meet the technical requirements of the design strength. The machine-made sand concrete can be widely applied to the field of buildings, and has practical significance in reducing the production cost of engineering concrete, reducing energy consumption, reducing environmental pollution and improving the concrete strength and volume stability of prefabricated T beams.
Owner:KUNMING UNIV OF SCI & TECH
Process for the production of high-strength concrete
ActiveCN121758123BImprove corrosion resistanceReduce anode dissolution rateHigh strength concretePortland cement
The application provides a preparation process of high-strength concrete, and belongs to the technical field of concrete, and comprises the following steps: step S1, Mg-Al-LDH-NO2 powder is prepared; step S2, microcapsules are prepared; step S3, machine-made sand, granite crushed stone, Portland cement, slag powder, limestone powder, metakaolin, microcapsules, water, a water reducing agent and Mg-Al-LDH-NO2 powder are mixed and stirred to obtain high-strength concrete. The application can achieve the purpose of improving the strength and durability of concrete.
Owner:LUOYANG LVZHU BUILDING MATERIALS CO LTD +1
Automatic high-strength concrete hole opening device and method for radioactive site
ActiveCN117584288BWorking accessoriesStone-like material working toolsHigh strength concreteElectric machinery
A kind of automatic opening device and method of high-strength concrete in radioactive site, including device base, device column, opening motor, device spindle, tool magazine;Base includes base body, datum plane, electromagnet, lifting eye screw, coarse guide device, positioning pin, the upper surface of base body is datum plane;Base body side is provided with electromagnet, coarse guide device and positioning pin;Device column supports concrete opening device spindle and spindle auxiliary support;Device column includes column lifting motor, speed reducer, cylindrical slide rail, T-type screw;Column lifting motor is set on the upper portion of device column, column lifting motor lower side is connected with speed reducer, speed reducer is connected with T-type screw, cylindrical slide rail is set on device column, drives device spindle to lift.
Owner:THE 404 COMPANY LIMITED CHINA NAT NUCLEAR
Uninterruptible power transmission and transformation station support column reinforcing structure
The invention discloses an uninterruptible power transmission and transformation station support column reinforcing structure, and relates to the technical field of power equipment reinforcement. According to the uninterruptible power transmission and transformation station support column reinforcing structure, under the mutual cooperation of the reinforcing assembly and the reinforcing assembly, when the problems of weathering damage and the like occur to a support column body of a transformer station, after the reinforcing assembly and the reinforcing assembly are installed on the outer wall of the support column body to form a grouting space, concrete is poured into the interior to wait for solidification forming; through cage type sleeving and pouring of high-strength concrete, the support column has large supporting strength, the overall stability of the transformer substation is kept, good supporting performance is kept in the long-term use process, and the service life of the transformer substation is prolonged. After the whole concrete is solidified and formed, the reinforcing assembly can be detached to facilitate follow-up reuse, the whole mounting and fixing mode is not complex, the consumed time is short, the grouting space has a good sealing effect, and the problem of leakage during concrete pouring is prevented.
Owner:GUANGDONG POWER GRID CO LTD
Unit braking system
The invention provides a unit braking system. The unit braking system comprises a rotating shaft; the brake disc is fixedly mounted on the rotating shaft; the brake comprises at least one brake plate, and the brake plate is configured to make contact with the brake disc so as to limit rotation movement of the brake disc along with the rotating shaft; the rotating shaft is arranged in the vertical direction, and the brake disc is located at the upper end of the rotating shaft in the vertical direction. The brake maintenance and replacement difficulty can be reduced on the first aspect, meanwhile, a safety hole for maintaining and replacing the brake does not need to be designed in high-strength concrete on the second aspect, and therefore the overall strength of a high-strength concrete building cannot be damaged; and finally, the cost of the high-strength concrete building can be reduced while the structural strength of the high-strength concrete building is ensured.
Owner:DONGFANG ELECTRIC MACHINERY
A renewable high-strength concrete and a method for preparing the same
The application relates to the field of concrete, and particularly discloses renewable high-strength concrete and a preparation method thereof. The preparation method of the renewable high-strength concrete comprises the following steps: Step 1, pretreatment of renewable aggregate, specifically as follows: Step 1-1, mixing of magnet powder and water to form a pretreatment liquid; Step 1-2, immersion of the renewable aggregate in the pretreatment liquid; Step 1-3, pressurization; Step 1-4, immersion of the renewable aggregate in a gap filling liquid; Step 1-5, pressurization and magnetic field treatment, so that the renewable filling aggregate is obtained; the gap filling liquid is composed of the following components: liquid sodium silicate, magnet powder, water absorption resin powder, hollow glass microbeads, white carbon black and diatomite; Step 2, preparation of concrete mixture; and Step 3, curing and molding. The strength performance of the concrete prepared by the application is not easily affected by the renewable aggregate.
Owner:DERUN CONCRETE (ZHONGSHAN) CO LTD
Preparation method of high-strength concrete additive
InactiveCN121869262AMixer accessoriesWrapper twisting/gatheringHigh strength concreteReciprocating motion
The invention discloses a preparation method of a high-strength concrete additive, the preparation method of the high-strength concrete additive is used for preparing the high-strength concrete additive, the preparation method of the high-strength concrete additive is realized through a preparation device of the high-strength concrete additive, and accurate proportioning of reaction liquid is completed by arranging a mixing mechanism; reaction liquid and water are fully hydrolyzed through three groups of liquid guide plates, a lower cylindrical cam is controlled to reciprocate up and down, the lower cylindrical cam controls a communicating pipe, a right compaction rod and a left compaction rod to reciprocate up and down, and the right compaction rod extrudes a sponge through a right compaction block to realize condensation work of the reaction liquid and formaldehyde; a communicating pipe performs piston motion through a liquid return plate, condensed reaction liquid is pumped into a neutralization cylinder, a left compaction rod extrudes a sponge to add liquid caustic soda into the reaction liquid, and therefore neutralization work is achieved, compared with an existing device, the adding proportion of formaldehyde and the liquid caustic soda can be controlled, and the situation that the proportion is not uniform enough is avoided.
Owner:周亮
Rack rail concrete sleeper
The utility model discloses a rack rail concrete sleeper which comprises a foundation structure, a sleeper body is arranged on the foundation structure, and an embedded part is arranged in the sleeper body and used for connecting the sleeper body with the foundation structure of a railway line. Steel rails are arranged at the two ends of the foundation structure, the steel rails and the foundation structure are tightly connected through a fastener system, a rack rail body is arranged in the middle of the foundation structure, and the rack rail body and the foundation structure are tightly connected through a fastener system. According to the rack rail concrete sleeper, the embedded structure on the sleeper is tightly matched with a specially-made fastener system, stable longitudinal and transverse constraint is formed, displacement of the sleeper under the load effect of a train is effectively prevented, meanwhile, due to the application of a high-strength concrete material, the compression resistance, fracture resistance and abrasion resistance of the sleeper are improved, the service life is prolonged, and the service life of the sleeper is prolonged. The fastener system is simple in structure and easy to install and maintain, the maintenance cost is reduced, the toothed rail body is subjected to special treatment, and the abrasion resistance is improved.
Owner:GUANGXI SANWEI RAIL MANUFACTURING CO LTD
Device and method for simulating three-dimensional crustal stress environment through prestressed reinforcement
PendingCN121656008AMaterial strength using tensile/compressive forcesHigh strength concretePre stress
The invention belongs to the technical field of deep ground environment mechanical testing, and discloses a device and a method for simulating a three-dimensional ground stress environment through prestressed reinforcements. The device comprises a test piece main body part, a prestress applying part, a positioning and reinforcing part and a monitoring and feedback part, the test piece main body part is composed of a stress test piece and a high-strength concrete outer layer, and the prestress applying part applies prestress through prestressed steel bars arranged in three directions by a post-tensioning method and is fixed; the positioning reinforcement part realizes prestressed reinforcement positioning and concrete protection, and the monitoring feedback part acquires strain data. According to the invention, the problems of unstable stress, low scene reduction degree and too high cost in the existing crustal stress simulation technology are solved, and the three-dimensional crustal stress environment of the deep ground can be accurately simulated.
Owner:NORTHEASTERN UNIV CHINA
Preparation method and product of high-strength concrete based on expandable fibers
A method for preparing high-strength concrete based on expandable fibers includes first uniformly mixing expandable graphite particles with a polymer spinning solution to obtain a mixed solution. The mixed solution is then subjected to electrospinning, wet spinning, air-jet spinning, or centrifugal spinning to produce spun fibers, i.e., expandable fibers. The expandable fibers are then uniformly mixed with concrete raw materials, and water is added and stirred to obtain a concrete slurry. The concrete slurry is then allowed to solidify to obtain a solidified body. The solidified body is then heated at a temperature of 200°C to 600°C. When the expandable graphite in the solidified body expands due to the heat, the high-strength concrete is obtained. This design not only improves interfacial properties and reduces production costs, but also enhances the mechanical strength of the final product.
Owner:WUHAN TEXTILE UNIV
A magnesium phosphate cement-based grouting repair material and a preparation method thereof
The application provides a magnesium phosphate cement-based grouting repair material and a preparation method thereof, and raw materials of the magnesium phosphate cement-based grouting repair material include: magnesium phosphate cement, fine aggregate and a composite reinforcing component; the composite reinforcing component includes: aluminum tripolyphosphate or an aluminum tripolyphosphate modified product and carboxymethyl chitosan. The application has high hourly strength and super-high later strength, and meets the repair and grouting requirements of high early strength and super-high strength concrete; meanwhile, the preparation method is simple and has strong operability.
Owner:THE THIRD CONSTR OF CHINA CONSTR EIGHTH ENG BUREAU +1
Reinforced concrete floor reserved hole forming die
PendingCN121321791AForms/shuttering/falseworksAuxillary members of forms/shuttering/falseworksHigh strength concreteReinforced concrete
The invention discloses a forming die for a reserved hole of a reinforced concrete floor slab. The forming die comprises a floor slab bottom formwork and a forming core die arranged on the floor slab bottom formwork. Wherein the outer wall of the forming core mold is coaxially sleeved with a pre-buried supporting pipe, and the multiple self-destruction type supporting pieces are evenly distributed in the circumferential direction of the pipe wall of the pre-buried supporting pipe and fixedly connected with the forming core mold; the center fixing support is inserted into an inner cavity of the forming core mold, the lower end of the center fixing support is fixedly connected with a floor bottom mold plate, and the center fixing support is used for pressing the forming core mold from the inside. Connection is actively relieved through the self-destruction mechanism, violent form removal is avoided, damage to the inner wall of a high-strength concrete hole is thoroughly eliminated, and structural integrity is guaranteed; the water in the concrete curing environment is used as a trigger source, time sequence control is achieved, external energy input is not needed, the mechanism works reliably, the automation degree is high, operation is easy and fast, the working efficiency is greatly improved, the labor intensity and the man-hour cost are reduced, applicability is high, and the wide market prospect is achieved.
Owner:HUBEI WUZHEN CONSTR CO LTD
C80 high-strength concrete large-top-diameter partially prestressed electric pole
The utility model discloses a C80 high-strength concrete large-top-diameter part prestress electric pole, which belongs to the technical field of electric poles, and comprises an upper electric pole and a lower electric pole which are installed in a combined mode, clamping grooves are formed in the combined ends of the upper electric pole and the lower electric pole, an upper flange seat is installed outside the clamping groove of the upper electric pole in a clamping mode, and a lower flange seat is installed outside the clamping groove of the lower electric pole in a clamping mode. A lower flange seat is clamped outside the clamping groove of the lower electric pole; a plurality of short threaded rods are fixed to the upper flange base at equal angles, threaded rings are arranged outside the short threaded rods in a threaded and sleeving mode, a plurality of hollow columns are fixed to the upper flange base at equal angles, and the hollow columns and the short threaded rods are distributed in an up-down corresponding mode; a plurality of long threaded rods are fixed on the lower flange seat at equal angles; stress generated on the upper electric pole and the lower electric pole after combination can be effectively buffered through the buffering mechanism, and the stability of combined installation of the upper electric pole and the lower electric pole is kept.
Owner:桂林韶兴电力科技有限公司
Undercut tap bolt
The utility model discloses an undercut tap bolt, which relates to the technical field of bolts, and comprises a screw rod and a thread assembly, the bottom end of the screw rod is provided with a screwing mechanism, the thread assembly is arranged on the outer wall of the screw rod, the thread assembly is used for positioning the screw rod in concrete, and the thread assembly comprises a first thread and a second thread, the first thread is spirally arranged on the outer wall of the screw rod, the second thread is spirally arranged at the end part of the screw rod, and the first thread is connected with the second thread. By means of the arrangement of the first threads and the second threads, the whole bolt is made of stainless steel except for the second threads, so that the bolt can be suitable for dark, humid and hostile environments, when the bolt is used, the second threads on the outer wall of the screw rod are screwed into concrete firstly, and the second threads on the outer wall of the screw rod are screwed into the concrete. And the second threads made of spring steel have the characteristics of high strength and high toughness, so that the bolt meets the mounting and using requirements of high-strength concrete, and the applicability of the bolt is improved.
Owner:SUZHOU MAOLONG ELEVATOR PARTS CO LTD
Prestressed high-strength concrete pipe pile anti-pulling connecting device and construction method
The invention relates to the technical field of tubular pile foundation engineering, in particular to a prestressed high-strength concrete tubular pile anti-pulling connecting device and a construction method, and the prestressed high-strength concrete tubular pile anti-pulling connecting device comprises an upper-section tubular pile and a lower-section tubular pile, the bottom end of the lower-section pipe pile is provided with a pile tip, and the top end of the lower-section pipe pile is provided with a second connecting end plate and is welded with the first connecting end plate; the core filling concrete is internally provided with a reinforcement cage and is of an integrated structure; the reinforcement cage is placed in the upper-section pipe pile and the lower-section pipe pile, and the core filling concrete is formed after concrete is poured, so that the upper-section pipe pile and the lower-section pipe pile are connected into a whole; the upper-section pipe pile and the lower-section pipe pile are connected in a two-end-plate welding mode, meanwhile, mechanical connection is replaced by core filling concrete formed by concrete core filling in the pipe piles, the welding connection and concrete core filling mode can meet the connection requirement of the pipe piles in the strong corrosion environment, and meanwhile, due to the fact that mechanical connection is not adopted, the connection cost is reduced. The use of mechanical joints is reduced, and the construction cost is greatly reduced.
Owner:QINGDAO UNIV OF TECH
High-strength concrete floor tile for road for constructional engineering
The high-strength concrete floor tile for the road for constructional engineering comprises four sets of concrete tile bodies, fixing mechanisms are arranged among the four sets of concrete tile bodies, the concrete tile bodies are equilaterally distributed in an octagonal structure, four sets of connecting grooves are equidistantly formed in the outer surface of the upper end of each concrete tile body, and each fixing mechanism comprises an inner ring sleeve; four sets of first hinge seats are annularly and fixedly connected to the outer surface of the inner ring sleeve at equal intervals, buffer mechanisms are hinged to the four sets of first hinge seats, and an elastic metal plate is arranged between every two adjacent buffer mechanisms; the structure of the device can effectively overcome the defects of instability in an external human use factor state and irregular stress pulling such as thermal expansion and cold contraction in a ground soil or material state, so that effective stability of a concrete brick body in the use process is guaranteed, the probability that the concrete brick body is accidentally upwarped or damaged due to accidental stress pulling is reduced, and the service life of the concrete brick body is prolonged. Therefore, high use efficiency of the concrete brick body is guaranteed.
Owner:安徽松顶建筑材料有限公司
Mixed tower self-repairing steel-concrete connection structure based on gradient stiffness matching and SMA constraint and wind power mixed tower
The invention provides a mixed tower self-repairing steel-concrete connecting structure based on gradient stiffness matching and SMA constraint and a wind power mixed tower. The mixed tower self-repairing steel-concrete connecting structure comprises a top ring duct piece and a switching structure connected to the upper portion of the top ring duct piece. The top ring duct piece is a prefabricated concrete annular segment, and an SMA constraint component is pre-buried in the top ring duct piece and used for self-repairing cracks in the top ring duct piece; a shell of the switching structure is an SMA plate, high-strength concrete is poured into an inner annular cavity to form a composite structure, an SMA non-resonant honeycomb structure with the elastic modulus similar to that of the concrete is arranged at the position of an inner skirt edge, and through cooperation of the SMA plate and the SMA non-resonant honeycomb structure, the rigidity difference and the deformation difference under the temperature are weakened, and force transmission is optimized. By means of the technical scheme, the problems that in the prior art, due to mismatching of the rigidity gradient of the steel-concrete switching section and the duct piece interface, the axial stress concentration external expansion effect is caused, and the anti-cracking performance of the duct piece is degraded in the operation stage of the mixed tower can be effectively solved.
Owner:CSIC HAIZHUANG WINDPOWER CO LTD