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37results about How to "Various construction methods" patented technology
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Double-circular shield shallow earthing construction method
InactiveCN1932243AUnderstand situationUnderstand the lawUnderground chambersTunnel liningArchitectural engineeringEarth surface
The present invention relates to a double circular shield construction method passing through shallow covered earth belonging to the field of building engineering technology. Said construction method includes the following steps: 1, earlier stage preparation; 2, tracking and monitoring; 3, shallow covered earth construction; 4, passing through shallow covered earth and making secondary grouting; 5, emergency measure and ground surface bleeding treatment.
Owner:SHANGHAI TUNNEL ENGINEERING CO. LTD.
Hydraulic arrangement mode sediment ejection structure
ActiveCN101418555ARemove threatIncrease the amount of sand flushingBarrages/weirsDischarge efficiencyExternal energy
The invention discloses a hydraulic arrangement type sand discharging structure, which comprises sand discharging pipelines, wherein the sand discharging pipelines are laid on the bottom parts of a reservoir, the tail ends of the sand discharging pipelines are connected with a bottom hole or a tunnel of a dam body and provided with gate valves to control the discharge rate; the head ends of the sand discharging pipelines are extended toward up stream, the end parts or proper parts of the sand discharging pipelines are provided with curved pipe segments tilted upward, and upper end openings of the curved pipe segments are higher than the expected sand silting face; and one side or / and two side pipe walls of the sand discharging pipes is / are provided with branch pipelines, the upper side pipe walls are provided with gate wells, and the inside of each gate well is provided with control valves. The number of sand discharging pipelines is more than two, and the sand discharging pipelines are laid on the reservoir bottoms on the bank side and in the middle of the reservoir respectively. The number of the gate wells is more than one, the gate wells are arranged on different positions on the upper side pipe wall of each sand discharging pipeline. In the mode of changing the position of a water inlet of a sand discharging hole of the reservoir, the structure utilizes the distributing type space difference generated in laying the sand discharging pipelines to achieve the aim of widening the range of sand discharging; moreover, the structure also has the advantages of unnecessary external energy, high sand discharging efficiency and good social and economic benefits.
Owner:张金良
Bridge structure and construction method therefor
InactiveCN1635224AReasonable and coordinated structureThe structure is novel and beautifulBridge structural detailsBridge erection/assemblyCross bridgeBox girder
The invention discloses a bridge structure, mainly comprising: piers arranged on the bases, box girders arranged on the piers. It is characterized in that: the top box girder of the bridge is an arched single-box multi-chamber concrete box girder; the bottom pier cross bridge is arranged with an upward column; the top part of the column is a pier column of abducted curved or straight Y type, I I type and H type; the bottom part of the column is straight or abducted curve. The technical characteristics of the invention are: firstly, the structure of the bridge is harmonious, reasonable and the appearance is elegant; secondly, the bridge span is enlarged, and the arched box girder can be preformed or on-site casting according to the bridge width, span and situations of the construction site, by which the project time can be shortened and the effect to the traffic is reduced.
Owner:SHANGHAI MUNICIPAL ENG DESIGN INST GRP
Aqueous epoxy zinc-rich priming paint and preparation method thereof
InactiveCN108690456AGood dispersionWell mixedAnti-corrosive paintsEpoxy resin coatingsEpoxyGas phase
The invention relates to the technical field of a paint, and concretely discloses an aqueous epoxy zinc-rich priming paint and a preparation method thereof. The priming paint comprises the following raw materials in parts by weight: 10-30 parts of epoxy resin, 0.1-0.5 parts of a wetting dispersant, 0.1-0.5 parts of an antifoaming agent, 1-5 parts of a film-forming auxiliary agent, 40-70 parts of sheet zinc dust, 4-20 parts of spherical zinc dust, 0-25 parts of ferrophosphorous powder, 0.2-2 parts of graphene oxide, 0.2-2 parts of gas-phase silica, 0.1-0.5 parts of a flash rust-prevention agent, 10-30 parts of a curing agent, 0.1-1 part of magnesium lithium silicate, and 5-10 parts of deionized water. The two-component aqueous epoxy zinc-rich priming paint employs a component A and a component B, the construction is simple, the VOC content is low, the hardness is high, adhesive force, impact resistance and sag resistance are excellent, the anti-settling performance is good, the storageperformance of the priming paint is increased, and the anti-salt spray performance is excellent.
Owner:HEBEI CHENYANG INDAL & TRADE GROUP CO LTD
Colorful coating
InactiveCN104119735AHas paint propertiesNo pollution in the processMulticolor effect coatingsWater basedAlcohol
The invention provides a colorful coating. The colorful coating comprises the following components in percentage by mass: 50-55% of film forming matter, 2-6% of water-based color paste, 10-16% of accessory ingredients and 35-40% of deionized water. According to the film forming matter, synthetic copolymer emulsion is used as a film forming matter of the coating. The accessory ingredients comprise the following components in parts by weight: 0.2-0.4 part of dispersing agent, 2-5 parts of film forming additive, 4-6 parts of antifreezing agent, 0.1-0.2 part of antiseptic and antimildew agent, 2-3 parts of thickening agent, 0.1-0.3 part of defoaming agent, 0.2-0.6 part of fragrance enhancer and 0.2-0.6 part of thixotropic agent. The colorful coating is water-based coating; the coating has the paint characteristic and is free of toxicity, non-combustible and slight in fragrance, so that coating is good in safety during storing, transporting and using, free of pollution to the environment during construction and free of fire danger; the dried coating is tough, durable, wearable and anti-scratch; and meanwhile, the coating has resistance to washing with ethyl alcohol, detergent and water.
Owner:丹阳市海信涂料化工厂
Primary blasting well forming method for middle guide well
InactiveCN108374661AVarious construction methodsHigh security riskBlastingShaft sinkingDetonatorSludge
The invention relates to the field of tunnel engineering, and discloses a primary blasting well forming method for a middle guide well. The method includes the steps: (1) performing measuring and positioning to determine the wellhead position of a vertical well; (2) mechanically digging a wellhead of the vertical well; (3) reversely digging the bottom of the vertical well upwards; (4) according toa blasting design lofting blast hole position of the middle guide well: performing lofting to form 2m*2m middle guide well position of the vertical well by the aid of a total-station instrument, andlabeling the position of the blast hole position; (5) completely drilling a blast hole by a down-the-hole drill once; (6) plugging the bottom of the blast hole; (7) filling the blast hole with explosive; (8) plugging an upper opening of the blast hole with blast sludge after the blast hole is plugged by the explosive; (9) line connecting and explosion initiating, connecting starting detonators inthe blast holes in a clustering manner, and performing differential initiation of non-electric millisecond detonators. The method has the advantages that construction safety is improved, potential safety hazards are reduced, and life safety of construction staff is guaranteed.
Owner:浙江省隧道工程集团有限公司
Facing mortar
The invention discloses a facing mortar, which comprises a glue powder, a thickening agent and a quartz sand, and the facing mortar comprises the following components by mass percent respectively: glue powder 8-10%, thickening agent 0.05-0.1% and quartz sand 65-91%. The invention has the advantages that the facing mortar of the present invention does not contain cement, thereby the whiskering risk is avoided, and the aberration is smaller than that of the cement based facing mortar, and the production and construction control are simple and convenient, and after 2 min of stirring at 450r / min by the mixer, the product can be used, and the construction mode is diversified, and the construction time is substantially shortened, and the requirements of construction environment and worker skill degree are lower than those of the cement based facing mortar. In addition, compared with the traditional cement facing mortar, the facing mortar of the present invention does not contain toxic substances, and the volatility is extremely low, and the product has the advantages of nontoxic side-effects of construction worker and user, moreover the compressive strength and flexural intensity are better than those of the traditional facing mortar.
Owner:北京宝辰联合科技股份有限公司
Formula and construction method of concrete
InactiveCN106278375ASufficient porosityGood water permeabilityCeramicwareMaterial resourcesUltimate tensile strength
The invention discloses a formula and a construction method of concrete. The formula comprises the following components in parts by weight: 80-100 parts of cement, 20-30 parts of 48-70-mesh fly ash, 30 parts of 10-mesh concrete waste residue, 300-340 parts of gravel, 30-40 parts of water, 6-8 parts of a cement concrete enhancer, 5-7 parts of a water reducer and 5-7 parts of a retarder. The construction method comprises the following processes: stirring concrete, pouring, compacting and curing the concrete, jointing a seam, paving mat coat and the like. Through adoption of the formula, the concrete is enabled to have sufficient structural strength so as to achieve relatively high durability while relatively good water permeability can be ensured; pores with multi-stage diameters can be formed, and when low-diameter pores are blocked, high-diameter pores can still permeate water, so that the water permeability time is prolonged; the construction efficiency is high, and manpower and material resources are saved.
Owner:合江县天佳建材有限公司
Quick-drying building waterproof coating
The invention discloses a quick-drying building waterproof coating. The quick-drying building waterproof coating is prepared from a ketazine / silicon oxide composite modified room-temperature self-crosslinking macromolecular polymer emulsion, an acrylic polymer emulsion, a protective agent, a stabilizer, a penetrating agent, a dispersing agent, a mildew-proof agent, an anti-corrosion and bactericidal agent, a defoamer and other aids and pigment fillers through an advanced processing technology, and has the advantages of high drying speed, quick strength development, good water resistance, alkali resistance, acid resistance and salt resistance and high adhesion to a base layer.
Owner:苏州市姑苏新型建材有限公司
Media interface construction system based on LED (Light Emitting Diode) and optical media
InactiveCN102169657AVarious construction methodsAdjustable arrangementStatic indicating devicesIdentification meansEngineeringMedia layer
The invention relates to a media interface construction system based on an LED (Light Emitting Diode) and an optical media, comprising an LED base, an optical media layer and an image bearing layer, wherein the LED base comprises an LED luminous dot matrix and an LED base controller; the LED base is fixed on a carrier; the optical media layer is fixed outside the LED base; the image bearing layer is fixed outside the optical media layer; the LED base is parallel to the optical media layer and a gap exists therebetween; the optical media layer is parallel to the image bearing layer and a gap exists therebetween; and the LED base controller controls the LED luminous dot matrix to send out changeable irradiation light which permeates the optical media layer and finally projects to the image bearing layer so as to generate a dynamic image media interface on the image bearing layer. Compared with the prior art, the media interface construction system based on the LED and the optical media has the advantages of being diversified in construction manner, wide in application range, convenient for maintenance and replacement, low in production cost, simple in manufacturing process and the like.
Owner:TONGJI UNIV
SS-type electric field coupling wireless power transmission system based on negative resistor
PendingCN108233553AVarious construction methodsSimple structureCircuit arrangementsCapacitanceElectrical resistance and conductance
The invention discloses an SS-type electric field coupling wireless power transmission system based on a negative resistor. The system comprises the negative resistor, a primary side resonator, a secondary side resonator, a coupling capacitor metal electrode plate and a load RL; the primary side resonator comprises a primary side transmitting coil and a primary side resonant capacitor C1 which areconnected in series, and the primary side transmitting coil includes a primary side inductor L1 and a primary side coil internal resistor R1 which are connected in series; the secondary side resonator includes a secondary side receiving coil and a secondary side resonant capacitor C2 which are connected in series, and the secondary side receiving coil includes a secondary side inductor L2 and a secondary side coil internal resistor R2 which are connected in series; the coupling capacitor metal electrode plate is connected to the primary side resonator and the secondary side resonator, the negative resistor is connected to the primary side resonator, and the load RL is connected to the secondary side resonator. According to the system, the structure is simpler, and the working frequency ishigher. When the transmission distance changes, the operating frequency of the system automatically satisfies the eigenfrequency, a constant high-level transmission efficiency can be achieved withina certain long transmission distance, and meanwhile the output power is kept constant.
Owner:SOUTH CHINA UNIV OF TECH
Inorganic anticorrosive coating layer for high-strength metal
ActiveCN110684379AHigh tensile strengthImprove antioxidant capacityAnti-corrosive paintsAluminum silicateSilicon oxide
The invention discloses an inorganic anticorrosive coating layer for a high-strength metal. The coating layer is formed on a high-strength metal surface by a coating through high-temperature sinteringat 500-800 DEG C, the coating comprises 25-35 parts of silicon oxide, 10-25 parts of phosphorus pentoxide, 10-25 parts of aluminum oxide, 2-15 parts of a fiber, 15-30 parts of a modifier and 1-3 parts of an anti-cracking agent, wherein the fiber is one or a combination of two or three of alumina silicate fiber, basalt fiber and calcium carbonate fiber; a plurality of sealing holes of which the diameters account for 1 / 30-1 / 10 of the thickness of the coating layer are distributed inside the coating layer; the number of the sealing holes is reduced from inside to outside; the aperture of a porous inner layer close to the high-strength metal surface is 2-15%; and the aperture of a dense outer layer far away from the high-strength metal surface is 0-2%. The coating layer is good in toughness,good in adhesion performance to a substrate, excellent in corrosion resistance, diverse in construction mode and low in use cost, and no crack penetrating through the coating layer can be caused in case of micro strain of 2800-3000.
Owner:ZHEJIANG UNIV
Water-based over-rust coating primer and preparation method thereof
InactiveCN111925680AFast packPlay the role of passivation rust spotsAnti-corrosive paintsPolymer scienceFree form
The invention discloses a water-based over-rust coating primer and a preparation method thereof. The primer comprises, by weight, 70-95 parts of a water-based acrylic emulsion, 1.5-6 parts of a coalescing agent, 5-30 parts of water and 0.3-8 parts of other auxiliaries. The primer disclosed by the invention does not use an antirust pigment with heavy metals any more, does not use an antirust pigment containing a zinc element any more, and is thus environment-friendlier; the primer disclosed by the invention does not use tannic acid and other organic acids any more, so no acidic substance residue in any free form exists in a paint film; and the primer disclosed by the invention is excellent in adhesive force, an adhesive force test shows that the adhesive force of the primer is grade 0 (seea scratch test), so the problem of poor adhesive force of a rust conversion coating is solved. The test adhesive force of the primer is still grade 0 after 1000 hours of exposure to salt spray (see adivision test after 1000 hours of exposure to salt spray).
Owner:德爱威(中国)有限公司
High-hardness super-wear-resistant two-component waterborne polyurethane terrace coating
ActiveCN111808517AHigh hardnessImprove environmental friendlinessPolyurea/polyurethane coatingsPolyurethane dispersionFirming agent
The invention relates to a high-hardness super-wear-resistant two-component waterborne polyurethane terrace coating, and belongs to the technical field of terrace coatings. The coating comprises a component A and a component B in a weight ratio of (3-5):1; the component A comprises the following raw materials in parts by weight: 10-15 parts of water, 0.2-0.8 part of a water-based dispersing agent,0.5-2 parts of a water-based wetting agent, 0.5-2 parts of a water-based defoamer, 0.5-2 parts of a water-based leveling agent, 25-35 parts of wear-resistant powder and 45-55 parts of a water-based polyurethane dispersion body; the component B comprises 15-25 parts of a water-based polyurethane curing agent. After the ground is brushed with the terrace coating, the ground has the characteristicsof high hardness and super wear resistance, in addition, the terrace coating also has the advantages of no dust, no yellowing, bright color, no fading, no pollution and the like, and the attractiveness and the practicability of the ground are greatly improved.
Owner:万华节能科技(烟台)有限公司 +1
Application of diamagnetic ink in glass
InactiveCN106634166AEasy to operateVarious construction methodsDuplicating/marking methodsInksSolventPigment
The invention provides an application of diamagnetic ink in glass. The magnetic ink is directionally arranged by combining magnetic-oriented printing forme to form a three-dimensional pattern. The diamagnetic ink comprises the following components in parts by weight: 10 to 95 parts of a film-forming substance, 1 to 25 parts of a diamagnetic substance containing pigment capable of being diamagnetically arranged in a magnetic field, 1 to 10 parts of an auxiliary agent and 0 to 88 parts of a solvent, wherein the diamagnetic substance containing pigment capable of being diamagnetically arranged in the magnetic field uses a reflective pigment as a substrate, and a diamagnetic substance is attached on the substrate.
Owner:德信嘉邦涂料(深圳)有限公司
Outer drainage system of inverted arch body of tunnel rich water formation and construction method
InactiveCN109236366AVarious construction methodsTroubleshoot unresolved issuesDrainageEngineeringDouble walled
The invention discloses an outer drainage system of an inverted arch body of a tunnel rich water formation and a construction method. The system is arranged between an initial support of the invert arch and a second lining of the invert arch, and comprises 1-3 double-wall perforated bellows disposed at the bottom of the invert arch. The double-walled perforated bellows are longitudinally disposed,the openings of each of the double-walled perforated bellows serve as water inlets for accumulated water on the bottom of the invert arch, and each of the double-walled perforated bellows is communicated with tunnel ditches for discharging the accumulated water in a pipe into the tunnel ditches; when the number of the double-wall perforated bellows is greater than one, the plurality of the double-walled perforated bellows are arranged side by side and communicated with each other. The method is fast, convenient and easy to operate, forms a complete drainage system between the initial supportof the invert arch and the second lining of the invert arch, largely solves the problem that the accumulated water at the bottom of the tunnel cannot be discharged, prevents the water at the bottom ofthe inverted arch from gathering, and creates a pumping effect that ensures operational quality and safety.
Owner:ERCHU CO LTD OF CHINA RAILWAY TUNNEL GRP
Negative resistor-based series-parallel wireless power transmission system
PendingCN107681789ASimple system structureImprove efficiencyCircuit arrangementsSystem structureCapacitance
The invention discloses a negative resistor-based series-parallel wireless power transmission system, which comprises a negative resistor and a transmitting circuit which are connected with each other, and a receiving circuit and a load which are connected with each other, wherein the transmitting circuit comprises a primary side capacitor and a primary side transmitting coil which are connected in series; the primary side transmitting coil comprises a primary side inductor and a transmitting circuit internal resistor which are connected in series; the transmitting circuit internal resistor refers to all positive resistors, except for the resistors reflected to a primary side from a secondary side, of the transmitting circuit; the receiving circuit comprises a secondary side receiving coiland a secondary side capacitor which are connected in parallel; the secondary side receiving coil comprises a secondary side inductor and a receiving circuit internal resistor which are connected inseries; and the receiving circuit internal resistor refers to all positive resistors, except for the load, of the receiving circuit. Energy supply for the circuits is achieved by using the property that energy is generated by the negative resistor, so that a high-frequency inverter source in a traditional series-parallel wireless power transmission system is replaced, and the system is simpler instructure, higher in working frequency and more stable in transmission efficiency.
Owner:SOUTH CHINA UNIV OF TECH
TPO self-adhesive water-proof coiled material
InactiveCN107323045AImprove the defect of not being able to achieve double-layer waterproofingEasy constructionSynthetic resin layered productsSelf-healingBituminous waterproofing
A TPO self-adhesive water-proof coiled material consists of a TPO layer, an isolating membrane layer and a self-adhesive water-proof coiled material layer, wherein the three layered structures are composited into the whole coiled material, adhesion edges are arranged on the whole coiled material and comprise a TPO layer adhesion edge integrated with the TPO layer and a self-adhesive layer adhesion edge integrated with the self-adhesive water-proof coiled material layer, and the arrangement directions of the TPO layer adhesion edge and the self-adhesive layer adhesion edge are opposite. The adhesion edges are arranged on two layers of structures, two coiled materials with independent waterproof capacity are composited with a unique technology, so that the double waterproof purpose is achieved through one-time construction, and the full-area self-adhesive skin type waterproof effect is really realized. The coiled material is provided with the isolating membrane layer, and thus, the problem of deterioration of the TPO layer due to the fact that the oil leaks from the self-adhesive layer to the TPO layer is solved. The coiled material has high strength, excellent high / low-temperature performance, high elongation, high crack resistance, self-healing performance of self-adhesive rubber-asphalt waterproof coiled materials and the like.
Owner:湖北永阳材料股份有限公司
Magical color coating material
InactiveCN107541118AHas paint propertiesNo pollution in the processMulticolor effect coatingsFungicideAlcohol
The invention discloses a magic paint, which comprises components and the mass percentages of the components are: film-forming substance 50-55, water-based color paste 2-6, auxiliary agent 10-16, deionized water 35-40, film-forming The substance adopts synthetic copolymer emulsion as the film-forming substance of the paint, and the additives are specifically dispersant 0.2~0.4, film-forming aid 2~5, antifreeze agent 4~6, anticorrosion and antifungal agent 0.1~0.2, thickener 2~3 , defoaming agent 0.1-0.3, flavoring agent 0.2-0.6, thixotropic agent 0.2-0.6; this kind of illusion paint is water-based paint, but the coating film has the characteristics of paint, and is non-toxic, non-flammable, and slightly fragrant, so storage, It is safe to transport and use, does not pollute the environment during construction, and has no fire hazard. The dried coating film is tough and durable, wear-resistant, scratch-resistant, and resistant to alcohol, detergent and water.
Owner:天津市东塔涂料有限公司
Lattice steel truss tower cable-stayed bridge
PendingCN108004908AReduce the windward areaImproved gallop stabilityCable-stayed bridgeBridge engineeringCable stayed
The invention belongs to the technical field of bridge engineering design, and particularly relates to a lattice steel truss tower cable-stayed bridge which comprises two tower piers, a tower column connected on the tower piers and a tower top crossbeam connected at the top end of the tower column. The lattice steel truss tower cable-stayed bridge is characterized in that the tower column comprises four box-shaped steel columns, a T-shaped rib is arranged in the tower column, a supporting structure composed of linear cross braces and X-shaped diagonal braces and connects the four box-shaped steel columns into a whole, and the tower top crossbeam is of a steel truss structure and connects two independent tower columns together. A stressed mode of a main tower is improved to achieve the objective of fully utilizing strength of steel.
Owner:XIAN MUNICIPAL ENG DESIGN & RES INST
Hydraulic arrangement mode sediment ejection structure
ActiveCN101418555BRemove threatIncrease the amount of sand flushingBarrages/weirsDischarge efficiencyExternal energy
Owner:张金良
Wall-mounted wing wall combined with cast-in-place pile foundation pit supporting and construction method thereof
InactiveCN113482012AGive full play to the supporting effectImprove integrityExcavationsBulkheads/pilesArchitectural engineeringRebar
The invention discloses a wall-mounted wing wall combined with cast-in-place pile foundation pit supporting and a construction method thereof. The wall-mounted wing wall comprises cast-in-place piles, a pile top platform and wall plates; the wall plates are located in front of the exposed faces of the cast-in-place piles, and the rear walls of the wall plates are connected with the exposed faces of the cast-in-place piles in a pouring manner to serve as main soil retaining and supporting structures of the wing wall; and the pile top platform is fixed to the tops of the cast-in-place piles, and the pile top platform and the lower wall plates are combined to serve as a wing wall upper supporting structure. The construction method of the wall-mounted wing wall comprises the steps that firstly, basic plane scabbling and cleaning are conducted on original cast-in-place piles and pile top beams, then net hanging reinforcing steel bar drilling is conducted, then rear reinforcing steel bars are buried, a double-layer reinforcing steel bar net is arranged, a formwork is erected, and finally layered concrete pouring is conducted, so that the cast-in-place piles, the pile top platform and the wall plates form the integrated wall-mounted wing wall, and formwork removal and forming are conducted. The wall-mounted wing wall can adapt to the limitation of various complex terrains and site conditions, the integrity of a supporting structure and a soil retaining structure is improved, the construction period is shortened, and the construction cost is reduced.
Owner:ZHONGYIFENG CONSTR GRP
Environment-friendly non-curing water-resistant paint and preparation method thereof
The invention relates to an environment-friendly non-curing water-resistant paint and a preparation method thereof. The environment-friendly non-curing water-resistant paint is prepared by mixing and melting a styrene-isoprene-styrene thermoplastic block copolymer, polyisobutylene, a softening agent, hydrogenated rosin, an anti-sagging agent, an anti-aging agent and the like. The environment-friendly non-curing water-resistant paint has excellent self-recovery property, creep properties, bonding property and stripping resistance, can fill and seal capillary bores and cracks in the base layer, and prevents the phenomenon of water channeling of the water-resistant layer. The maximum melting temperature during construction is 120 DEG C; and the environment-friendly non-curing water-resistant paint does not generate any harmful volatile matter, has the advantages of high safety, environment friendliness and no pollution, and can adopt the mechanical spray coating or artificial scratch coating construction mode.
Owner:河北豫源防水材料有限公司
A kind of active inorganic anti-corrosion coating for improving the bond strength between steel bar and concrete and its coating method
ActiveCN110484027BUniform thicknessGood coating effectAdhesive processes with surface pretreatmentAnti-corrosive paintsSilicon oxideRebar
The invention discloses an active inorganic anticorrosive coating for improving the bonding strength between a steel bar and concrete. The active inorganic anticorrosive coating comprises the following components in parts by weight: 20-35 parts of phosphorus pentoxide, 20-40 parts of silicon oxide, 10-25 parts of aluminum oxide, 5-30 parts of an active binder, 10-20 parts of a flatting agent and 0-5 parts of an anti-cracking agent. The invention further discloses a coating method of the active inorganic anticorrosive coating for improving the bonding strength between the reinforcing steel barand the concrete. The coating method comprises the following steps: 1) preparing a coating; 2) performing base material treatment; 3) coating; 4) sintering; 5) cooling. The method is simple in process, low in cost and good in corrosion resistance; after the active binder is added, the bonding strength between the coating plain round steel bar and the concrete is 4-8 times that of a common plain round steel bar, and the bonding strength between the coating twisted steel bar and the concrete is 1.5 times or above that of the common twisted steel bar; the dynamic bonding strength between a steelbar coated with the coating and concrete and the bonding strength after high temperature are obviously superior to those of a common steel bar and an epoxy coating steel bar.
Owner:ZHEJIANG UNIV
A kind of spraying quick-setting modified asphalt waterproof coating and preparation method thereof
ActiveCN104726024BWaterproofAnti-seepageConjugated diene hydrocarbon coatingsChloropene polymer coatingsInorganic saltsBituminous waterproofing
The invention relates to a spray quick-setting modified asphalt waterproof paint which comprises a component A and a component B, wherein the component A comprises rubber, asphalt, a softener, an anionic surfactant, a stabilizer and water; the component B comprises an inorganic salt, a composite ferric aluminum copolymer and deionized water; the component A and the component B are respectively prepared and then are applied. According to the paint, the condition that the asphalt and latex are not evenly mixed is avoided; meanwhile, use of anionic latex is avoided; the production cost is greatly reduced; and the spray quick-setting modified asphalt waterproof paint has important practical significance in practical industrial production and application.
Owner:金盾建材(唐山)有限公司
Electric field coupling singlet line electric energy transmission system based on negative resistor
PendingCN108199499AVarious construction methodsSimple structureCircuit arrangementsElectric power transmissionElectrical conductor
The invention discloses an electric field coupling singlet line electric energy transmission system based on a negative resistor. The system comprises a negative resistor, a radiating circuit, a receiving circuit, a load, and a single insulation wire, wherein the negative resistor is connected with the radiating circuit, the receiving circuit is connected with the load, and the single insulation wire is connected with the radiating circuit and the receiving circuit. The radiating circuit comprises a primary side electrical inductance, a primary side metallic conductor and a radiating circuit internal resistor, wherein the primary side electrical inductance, the primary side metallic conductor and the radiating circuit internal resistor are connected in series; the receiving circuit comprises a secondary side electrical inductance, a secondary side metallic conductor and a receiving circuit internal resistor, wherein the secondary side electrical inductance, the secondary side metallicconductor and the receiving circuit internal resistor are connected in series; the primary side metallic conductor and the secondary side metallic conductor generate displacement current to the groundor other surrounding conductive objects, and the displacement current of the primary side metallic conductor and the secondary side metallic conductor are respectively represented as primary side equivalent capacitance and secondary side equivalent capacitance; the electric energy transmission is achieved between the radiating circuit and the receiving circuit by the means of electric field coupling between the primary metallic conductor and the secondary side metallic conductor. According to the electric field coupling singlet line electric energy transmission system based on the negative resistor, the structure is simpler, the working efficiency is higher, the constant transmission efficiency can be achieved within a long distance, and the system electric energy transmission is more stable.
Owner:SOUTH CHINA UNIV OF TECH
A construction method of envelope structure for protecting existing buildings inside foundation pit
ActiveCN111749249BEffective protectionIncrease the usable areaExcavationsBulkheads/pilesShotcreteSpatial structure
The present invention relates to a construction method for protecting an existing building inside a foundation pit, comprising the following steps: step 101, determining the excavation contour line of the foundation pit, and setting a preset support around the perimeter of the protected building Set up several supporting piles on the pile contour line, the contour line of the supporting piles is a regular polygon or a circle with an even number of sides, and the area outside the contour line of the supporting piles and within the contour line of the excavation of the foundation pit is taken as the foundation pit Excavation area; step 102, after the construction of the support pile is completed, the pile head is removed, and the pile top crown beam above the support pile is constructed; step 103, in the excavation area of the foundation pit, excavate downwards to the anchor cable to be constructed in the current layer 800mm to 1000mm below; step 104, constructing the reinforced mesh sprayed concrete surface layer on the outer wall of the support pile, making its shape consistent with the shape of the support pile outline; S105, fixing all the support piles by anchor cables; Step 106, repeat steps 103-105 until the excavation reaches the bottom elevation of the foundation pit, and construct the underground space structure above the bottom elevation of the foundation pit and within the excavation area of the foundation pit.
Owner:BEIJING URBAN CONSTR DESIGN & DEV GRP CO
Bearing inner ring machining device
InactiveCN108972177AEasy to replacePromote repairRevolution surface grinding machinesGrinding work supportsArchitectural engineering
The invention provides a bearing inner ring machining device. The bearing inner ring machining device comprises a bracket, a bearing fixture and a bearing machining device; telescopic blocks are arranged at the two sides of a top frame and rotatably connected with the top frame, the lower end of each telescopic block is provided with a telescopic rod, the lower end of each telescopic rod is provided with a limiting groove, and the two sides of the lower end of each telescopic block are provided with support blocks; support columns at the lower end are rotatably connected with a base, the lowerend of the top frame is provided with the bearing fixture, the two sides of the upper end of the base are provided with rotating blocks, the rotating blocks are provided with limiting holes, the baseis rotatably connected with the rotating blocks through base rotating shafts, and the rotating blocks are provided with the limiting holes; the base is detachably connected with the bearing machiningdevice, a motor connecting block is arranged in the middle of the upper end of the base and provided with motor limiting blocks, a motor is arranged in the motor connecting block, the upper end of the motor is provided with a motor head, and bearing machining is conveniently conducted in various modes; the bearing machining device is detachably connected with the base to facilitate replacement and repair, the bearing fixture is suitable for bearings different in size, the angle of the top frame can be adjusted by a rotating rod, and the construction mode of the device is more diversified.
Owner:ANHUI MGN BEARING
An inorganic anti-corrosion coating for high-strength metals
ActiveCN110684379BRequirements for high-strength metalsSolve metal corrosion problemsAnti-corrosive paintsAluminum silicateSilicon oxide
An inorganic anticorrosive coating layer for high-strength metal. The coating layer is formed on the surface of high-strength metal by sintering a coating at a high-temperature of 500-800°C. The coating comprises 25-35 parts of a silicon oxide, 10-25 parts of phosphorus pentoxide, 10-25 parts of aluminum oxide, 2-15 parts of a fiber, 15-30 parts of a modifier, and 1-3 parts of an anti-cracking agent, wherein the fiber is one or a combination of two or three of alumina silicate fiber, basalt fiber, and calcium carbonate fiber. Multiple sealing holes of which the diameters account for 1 / 30-1 / 10 of the thickness of the coating layer are distributed inside the coating layer, and the number of the sealing holes is reduced from inside to outside. The porosity of a porous inner layer close to the surface of the high-strength metal is 2-15%, and the porosity of a dense outer layer far away from the surface of the high-strength metal is 0-2%. The inorganic anticorrosive coating layer is good in toughness, high in adhesion performance to a substrate, excellent in corrosion resistance, diverse in construction mode and low in use cost, and no crack penetrating through the coating layer is caused during micro strain of 2800-3000.
Owner:ZHEJIANG UNIV
A kind of inorganic anti-corrosion coating with photocatalytic antibacterial and antifouling and coating method thereof
ActiveCN110484028BNo attachment foundImprove corrosion resistanceAntifouling/underwater paintsPretreated surfacesPhysical chemistrySilicon oxide
The invention discloses a photocatalytic antibacterial antifouling inorganic anticorrosive coating. The coating is prepared from the following raw materials in parts by weight: 25 to 35 parts of phosphorus pentoxide, 35 to 50 parts of silicon oxide, 10 to 25 parts of calcium fluoride, 1 to 4 parts of bacteriostatic agent and 5 to 20 parts of flatting agent. The invention further discloses a coating method of the photocatalytic antibacterial antifouling inorganic anticorrosive coating. The coating method comprises the following steps of (1) coating preparation, (2) base material treatment, (3)coating, (4) sintering and (5) cooling, and the photocatalytic antibacterial antifouling inorganic anticorrosive coating is obtained. By adding the bacteriostatic agent, the antibacterial antifoulingcapacity of the coating is greatly improved, the process is simple, the seawater corrosion resistance is good, and the construction modes are diversified.
Owner:ZHEJIANG UNIV
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