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48results about How to "Fast open traffic" patented technology
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Injectable early-strength ultrahigh-toughness mortar concrete system and preparation method thereof
The invention discloses an injectable early-strength ultrahigh-toughness mortar concrete system and a preparation method thereof. The injectable early-strength ultrahigh-toughness mortar concrete system is prepared from aluminate cement, an early strength agent, a thickening time control agent, a thixotropic agent, a water reducing agent, a defoaming agent, special fibers and the like. According to the injectable early-strength ultrahigh-toughness mortar concrete system and the preparation method thereof, the rheological characteristics, the early strength behavior, the injection constructionand the strong base body bonding characteristic of the system can be adjusted through optimization of the components, and the obtained injectable early-strength ultrahigh-toughness mortar concrete system can be applied to rapidly repair of conventional constructional engineering and road and military engineering.
Owner:JIANGSU SOBUTE NEW MATERIALS
Cold construction color cementing material for resin concrete
ActiveCN103265922AGood high temperature performanceExcellent water stabilityNon-macromolecular adhesive additivesMacromolecular adhesive additivesLiquid stateRoad surface
The invention relates to a cold construction color cementing material for resin concrete. According to the invention, a composite epoxy resin used as a substrate is prepared by mixing a bisphenol A type epoxy resin and a flexible epoxy resin and subjecting an obtained mixture to modification by a flexibilizer, a coupling agent and an anti-ageing agent; a curing agent is prepared by modifying a conventional curing agent with a dispersant and a defoaming agent; the cementing material has obviously superior high temperature performance, low temperature performance, water stability and fatigue resistance to those of common asphalt and SBS modified asphalt; the cementing material in a liquid state needs no extra heating in the processes of mixing, transporting, paving and compacting, according with requirements for energy saving and low carbon; when the prepared resin concrete for cold construction is used for laying of a pavement, a curing period is short, and traffic is rapidly opened; an inorganic pigment or organic pigment is added for preparation of the color cementing material which is applicable to pavements with different functional requirements; composition materials are easily available, and the cold construction color cementing material is prepared by using a conventional method and is easy for large scale popularization.
Owner:重庆市智翔铺道技术工程有限公司
Multi-functional bridge seamless expansion device and construction technology
ActiveCN107119556AIncrease widthVolume expansion compensationBridge structural detailsBridge erection/assemblySupporting systemRadar
The invention relates to a multi-functional bridge seamless expansion device and a construction technology. The multi-functional bridge seamless expansion device comprises an expansion system, a supporting system, a car stopping system, a detecting and data collecting system, an analysis system, an alert and display system, a wifi and GPS system and a controlling system. The construction technology comprises the steps of cutting, sliding groove forming, stand column and sliding column installing, radar antenna installing, stress and strain detector installing, amplitude and frequency detector installing, car stopping system installing, expansion system installing, sound broadcaster and displayer installing, control switch installing, wifi and GPS system installing and analysis system and alert system installing. The multi-functional bridge seamless expansion device and the construction technology have the advantages that universality is high, the service life is long, the cost is low, the construction speed is high, maintenance is convenient, the maintaining cost is low and traffic open is fast.
Owner:ZHENGZHOU MUNICIPAL MAINTENANCE ENG CO LTD
High-stability waterborne epoxy resin modified emulsified asphalt and preparation method thereof
ActiveCN111363373AGood thickening effectSlow reaction speedIn situ pavingsBuilding insulationsPolymer scienceBitumen emulsion
The invention discloses high-stability waterborne epoxy resin modified emulsified asphalt and a preparation method thereof, belonging to the technical field of road materials. The high-stability waterborne epoxy resin modified emulsified asphalt comprises the following raw materials in percentage by mass: 35%-45% of matrix asphalt, 0.9%-3% of an emulsifier, 3%-5% of a bentonite thixotropic agent,4%-27% of water-borne epoxy resin, 3%-10% of a water-borne epoxy curing agent, 0.1%-0.5% of an anti-stripping agent, 0.02%-0.2% of a thickening agent, 0.5%-2% of a pH regulator and 28%-38% of water. The raw materials are subjected to shearing and emulsifying at a high speed via a colloid mill to obtain the asphalt. Through the thickening effect of the bentonite thixotropic agent and the thickeningagent, the workable time of a cementing material is greatly prolonged, and the risk of thickening and segregation of the cementing material in the process of storage and transportation is reduced; and meanwhile, the water-borne epoxy resin modified emulsified asphalt keeps low kinematic viscosity, so spraying construction can be smoothly carried out, and traffic can be rapidly recovered.
Owner:福建省交通科研院有限公司 +1
Graded broken stone filling type semi-flexible composite pavement mixture and pavement construction method
The invention relates to a graded broken stone filling type semi-flexible composite pavement mixture, which comprises the following components in parts by mass: 100 parts of graded broken stone; 4-6 parts of water and 6-10 parts of a grouting material. The grouting material comprises cement, water-based acrylic resin, a volcanic ash material and water. The grouting material is poured into the graded broken stone. The semi-flexible composite pavement mixture can be constructed at normal temperature, thus effectively solving the rutting problem of asphalt pavements and improving the durability of the pavements. The environmental pollution caused by hot mix construction of a filled semi-flexible pavement can be reduced. The construction efficiency of a filled composite pavement is improved, and the production cost is reduced.
Owner:HOHAI UNIV
High-performance economical asphalt mixture and construction method thereof
The invention discloses a high-performance economical asphalt mixture and a construction method, the high-performance economical asphalt mixture is used for preparing a wearing thin layer of a pavement, the wearing thin layer comprises high-viscoelasticity modified asphalt, mineral aggregate and a stabilizer, the asphalt-aggregate ratio of the high-viscoelasticity modified asphalt to the mineral aggregate is 6.0-7.5%, and the stabilizer is 0.3-0.6% of the asphalt mixture; and during construction, the asphalt mixture is paved on a treated base surface and rolled. The paving thickness of the wearing thin layer paved by the asphalt mixture is 1-3cm, so that the wearing thin layer has the advantages of saving cost and resources, and the price of the wearing thin layer is 30% lower than that of similar materials and 50% lower than that of similar product stones; and according to the invention, the consumption of manpower, machinery, fuel and the like is saved in the aspects of stone heating, mixture production, mixture transportation, pavement rolling and the like, the carbon emission is directly reduced by 70%, the pollution is reduced by 50%, and the noise of the specially designed special texture of the paved pavement is reduced by 5-10dB compared with that of the traditional pavement.
Owner:广东华路交通科技有限公司 +1
Super-early-strength black steel fiber reinforced concrete castable and using method thereof
InactiveCN110950613AImprove early strengthFast open trafficUltimate tensile strengthFiber-reinforced concrete
The invention discloses a super-early-strength black steel fiber concrete castable which is prepared by mixing super-early-strength dry-mixed mortar, a coarse aggregate, a coloring agent, steel fibersand other raw materials according to a certain proportion. The invention further discloses a using method of the super-early-strength black steel fiber reinforced concrete castable. The super-early-strength black steel fiber reinforced concrete castable disclosed by the invention has the characteristics of high early strength, good durability, small chromatic aberration with road asphalt concreteand the like, uses few types of materials, is simple and convenient in construction process, does not need to be rolled, is suitable for rapid repair of urban inspection well concrete, and can meet the functional requirement of rapidly opening traffic within 3 hours.
Owner:WUHAN HANYANG MUNICIPAL CONSTR GRP CO LTD
Emulsified asphalt and preparation method thereof
ActiveCN106810882AImprove high temperature performanceImprove water stabilityBuilding insulationsPolymer modifiedPolymer science
The invention discloses emulsified asphalt and a preparation method thereof. Based on the total weight of the emulsified asphalt, the emulsified asphalt is prepared from the following components in percentage by weight: 60-70 percent of polymer modified asphalt, 1-4 percent of emulsifier, 0.1-0.5 percent of an anti-stripping agent and 28-38 percent of water; the emulsifier contains a first emulsifier and a second emulsifier; the first emulsifier is one or more of lignin amine, alkyl amide polyamine and polyethylene polyamine; the second emulsifier is one or more of alkylamine, alkyl propylene diamine and alkyl quaternary ammonium salt; and the weight ratio of the first emulsifier to the second emulsifier is 1-9:1. The emulsifier has a relatively strong bonding strength with aggregates, so that the service life of the mixture formed by the emulsified asphalt is prolonged, the demulsified curing speed of the mixture in a spreading and compacting process is increased, and the emulsified asphalt mixture has relatively high high-temperature performance and excellent water-resistant stability.
Owner:CHINA PETROLEUM & CHEM CORP +1
Preparation method of high-solid-content emulsified SBS (styrene-butadiene-styrene) modified asphalt and application of modified asphalt in micro-surfacing
InactiveCN104387594AHigh solid contentReduce production and transportation costsBuilding insulationsHigh concentrationHigh-speed grinding
The invention discloses a preparation method of high-solid-content emulsified SBS (styrene-butadiene-styrene) modified asphalt and an application of the modified asphalt in micro-surfacing. The preparation method of the emulsified SBS modified asphalt comprises the steps as follows: the SBS modified asphalt is heated to 170-190 DEG C, liquid soap is prepared by a slow-breaking and quick-setting asphalt emulsifier and water, temperature is adjusted to 45-65 DEG C, acid is adjusted to 1.5-2.5, 65-80 parts by weight of asphalt and 20-30 parts by weight of liquid soap are added into a colloid mill simultaneously for high-speed grinding and shearing, then the temperature is reduced to be lower than 80 DEG C through a heat exchanger, and a high-concentration modified emulsified asphalt product can be produced. The prepared emulsified SBS modified asphalt has the characteristics of high solid content and low production and transportation cost; and a mixed micro-surfacing thin pulp mixture has the characteristics that mixing time meets requirements, the film forming performance of the asphalt on the surface of a stone is good, the high-temperature property and wear resisting property are excellent, early strength is formed quickly, and a pavement can carry traffic earlier.
Owner:SHANDONG DASHAN ROAD & BRIDGE ENG
High-permeability emulsified asphalt permeable oil as well as preparation method and application thereof
ActiveCN112239546AReduce viscosityImprove permeabilityRoads maintainenceBuilding insulationsSocial benefitsBitumen emulsion
The invention provides high-permeability emulsified asphalt permeable oil as well as a preparation method and application thereof. A spraying mode is adopted on an asphalt pavement, and a high-permeability emulsified asphalt material comprises the components in parts by weight: 40-50 parts of petroleum asphalt, 1-5 parts of an emulsifier, 35-45 parts of water, 10-15 parts of a permeable compositelight component and 1-2 parts of an additive. The application method comprises the steps: uniformly spraying the obtained high-permeability emulsified asphalt permeable oil on a pavement base, spraying seal coat asphalt after drying, and opening the traffic after maintenance. The material is reasonable in design, has good infiltration capacity, film forming effect and water seepage prevention capacity, can meet the permeability requirement of a pavement semi-rigid base layer, and improves the overall performance of a pavement. Most components in the raw materials of the material are functionalraw materials, so that the material has good economic benefits, is free of pollution and has good social benefits. The high-permeability emulsified asphalt is used for a permeable layer of a pavement, and can reduce the cost and protect the environment while meeting the use performance of the pavement.
Owner:BEIJING SHOUFA HIGHWAY MAINTENANCE & CONSTR +1
Composite pavement layer-sealing method
The invention provides a composite pavement layer-sealing method, and belongs to the technical field of highway pavement maintenance. The composite pavement layer-sealing method comprises the steps of construction preparing, SBR waterproof emulsified asphalt layer sealing, fiber spreading, SBR emulsified asphalt layer sealing, synchronous crushed stone layer sealing and micro surfacing. After treatment with the composite pavement layer-sealing method, pavement has good skid resistance and abrasion resistance, a net structure is formed by SBR emulsified asphalt with high viscosity, fiber and crushed stones, so that flowing of the asphalt is prevented effectively, high temperature stability is improved, the pavement is not flushing, load and abrasion can be effectively resisted at the same time, shear resistance and slip properties of the pavement is improved.
Owner:陕西国琳建设工程有限公司
Fabricated prestressed high-strength concrete pavement
PendingCN111636268AImprove stress resistanceWith flexural toughnessSingle unit pavingsPre stressSingle plate
The invention discloses a fabricated prestressed high-strength concrete pavement. The fabricated prestressed high-strength concrete pavement comprises two or more single plates, prestressed tendons, prestressed anchorage devices and fabricated parts. A veneer is made of high-strength concrete, thickness of the veneer is 6-10 cm, transverse and longitudinal crossed prestressed tendon hole channelsare formed in the veneer, and bent hole channels are formed in the crossed points; more than two veneers are mutually inserted along the transverse direction and / or the longitudinal direction, the prestressed tendons are arranged along a center line of the veneer body and are inserted into corresponding prestressed tendon ducts, the prestressed tendons are in a transverse and longitudinal crossedstate in space, and a distance between every two adjacent transverse or longitudinal prestressed tendons is 1-3m, the prestressed tendons extend out of the end single plates and then are anchored andfixed through the prestressed anchorage devices to form assembling and splicing units. And more than one assembling and splicing unit is connected through assembling pieces to form a pavement. The fabricated prestressed high-strength concrete pavement is advantaged in that the thickness of a pavement slab is reduced, and on-site rapid assembly can be realized.
Owner:NO 63921 UNIT OF PLA
Drainage type asphalt concrete abrasion layer and construction method thereof
InactiveCN110407514AReduce thicknessImprove the ability to resist plastic deformation at high temperatureBuilding insulationsShear stressRoad surface
The invention discloses a drainage type asphalt concrete abrasion layer and a construction method thereof. The asphalt concrete abrasion layer comprises a bonding layer sprayed on an original pavementand an asphalt concrete layer laid on the bonding layer; the material for the asphalt concrete layer is an asphalt mixture; the asphalt mixture comprises, by mass, ultra-high-viscosity modified asphalt with the oil-stone ratio of 4.8%-5.1%, 95%-97% of aggregate and 3%-5% of mineral powder; the indexes of the ultra-high-viscosity modified asphalt are as follows: at 60 DEG C, the dynamic viscosityis greater than 105 Pa.s; at 60 DEG C, the shear stress is greater than 1000 Pa, and a softening point is greater than 100 DEG C; At -20 DEG C, the bending workload is greater than 1 MPa, and the bending stiffness is smaller than 100 MPa. The asphalt concrete layer and the bonding layer are adopted to prepare the concrete abrasion layer so that the strength and stability of the pavement can be effectively guaranteed, the bonding property with the original pavement is improved, and the construction speed is high.
Owner:SHANGHAI ROAD & BRIDGE (GRP) CO LTD +1
High-performance asphalt mixture for steel bridge floor pavement and preparation method thereof
ActiveCN104944843AStrong resistance to deformation at high temperatureImprove low temperature toughnessSolid waste managementFrostRoad engineering
The invention provides a high-performance asphalt mixture for steel bridge floor pavement and a preparation method thereof, aims to solve the problem that the conventional asphalt mixture for steel bridge floor pavement cannot be high in compactness, reliable in high temperature anti-deforming capability, excellent in low temperature deforming capability and high in fatigue-resistant capability at the same time, and belongs to the field of road engineering materials. The asphalt mixture provided by the invention comprises the following components in percentage by mass: 78.8-82.5% of an aggregate, 0.5-2.6% of an asphalt mixture anti-rut agent, 1.8-5.7% of rubber powder, 9.2-12.5% of a cementing material and 0-6.0% of a filler. The preparation method comprises the following steps: firstly, conducting heat preservation on the aggregate, heating a mixer, and then simultaneously adding the aggregate subjected to heat preservation, the asphalt mixture anti-rut agent and the rubber powder into the heated mixer for mixing; secondly, adding the cementing material for mixing; finally, adding the filler for mixing. The asphalt mixture provided by the invention is a novel asphalt mixture being low in price and simple for construction, and integrating the three properties of high compactness (waterproof capability), excellent high temperature anti-rut capability and excellent low temperature deforming capability, and particularly suitable for steel bridge floor pavement in a seasonal frost region under the high temperature and heavy-loaded traffic conditions.
Owner:辽宁省交通科学研究院有限责任公司
Cement concrete pavement waterproof structure with embedded seam of full-seam-opening hollow elastic tube
InactiveCN105525554AImprove waterproof performanceIncreased durabilityPaving detailsEngineeringShearing deformation
The invention discloses a cement concrete pavement waterproof structure with an embedded seam of a full-seam-opening hollow elastic tube, comprising a hollow elastic tube which is arranged in the embedded seam and can horizontally expand and contract along with the expansion and contraction of a pavement slab; the elastic tube is at least provided with an arch-shaped bulge upwards under the squeezing action of the pavement slab; the surface of the hollow elastic tube, over against the seam, is provided with an open seam of which the inside and outside are communicated; the pre-compressed magnitude of a hollow elastic waterproof part is large, so that the hollow elastic waterproof part can have relatively large extension and compression space, can adapt to deformation of a concrete slab for a long time, and especially can adapt to horizontal expansion and contraction deformation and vertical shear deformation; and when the width of a transverse seam changes with the temperature, because the compression degree of the hollow elastic waterproof part is suitable for expansion and contraction motion of the hollow elastic waterproof part, under the conditions of the expansion and contraction deformation and shear deformation of the transverse seam, by reducing the interfacial stress caused by the expansion and contraction deformation and shear deformation of the transverse seam, the joint between the transverse seam and the elastic waterproof part can not be damaged because of separation of the elastic waterproof part from the transverse seam.
Owner:CHONGQING JIAOTONG UNIVERSITY +1
Fused protruding light reflecting coating
InactiveCN103436134AGood weather resistanceFast open trafficReflecting/signal paintsCar drivingPetroleum resin
The invention belongs to the technical field of coatings, and particularly relates to a fused protruding light reflecting coating. The fused protruding light reflecting coating comprises the following components by weight percent: 15%-20% of C5 petroleum resin, 1%-10% of pigment, 65%-80% of filler, 1%-6% of reflective glass bead, and 2%-8% of additive. The fused protruding light reflecting coating has the beneficial effects that 1. after the coating is painted on the road, the road can be put into use very soon, generally in 15 minutes; 2. when a car drives on the road coated with the coating, the coating gives out special sound to warn a driver, thus effectively improving the safety.
Owner:FRIENDS OF ROAD TRANSPORT PROJECTS IN ZHEJIANG NEW MATERIALS
Normal temperature two-component liquid crack pouring sealant for pavements and preparation method thereof
ActiveCN110105911AAvoid damageHigh bonding strengthNon-macromolecular adhesive additivesPolyureas/polyurethane adhesivesChemical synthesisAdhesive
The invention provides a normal temperature two-component liquid crack pouring adhesive, which is a polyurethane two-component A-B type liquid crack pouring sealant. Specifically, the component A is aprepolymer prepared by chemical synthesis of a variety of materials including methylenediphenyl diisocyanate (MDI), polyether polyol, chlorinated paraffin, dioctyl phthalate, etc; the component B isa mixture of asphalt, polyether polyol, chlorinated paraffin, polyisobutylene, a crosslinking agent, a coupling agent, a catalyst, a drier, light calcium powder and other materials. During use, the component A and component B are fully mixed in certain proportion and then directly poured into pavement cracks, thus obtaining the pavement crack pouring and sealing material with the advantages of high cohesive force, high adhesion, high wear resistance, high weatherability and rapid curing. And the two-component liquid crack pouring sealant can be used for various cracks on asphalt and cement pavements.
Owner:河北德瑞公路工程有限公司
Environmentally-friendly highway material
The invention discloses an environmentally-friendly highway material. The environmentally-friendly highway material is characterized by comprising the following ingredients in parts by weight: 100-150 parts of gravel, 12-15 parts of diatomite, 5-9 parts of sepiolite, 6-8 parts of medical stone, 1-3 parts of perlite, 1-2 parts of tourmaline anion powder, 5-14 parts of stearic acid, 9-18 parts of stearate, 8-12 parts of stearic amide, 2-9 parts of hollow glass bead, 1-9 parts of graphite powder, 3-7 parts of kaolin, 4-9 parts of wood fiber (80-100 meshes), 6-9 parts of diatomite (80-100 meshes), 7-8 parts of open pore expanded perlite (20-120 meshes), 5-8 parts of hollow glass bead (120-200 meshes), 6-9 parts of lime, 14-28 parts of gypsum, 3-9 parts of fiber and 3-9 parts of foaming agent. The environmentally-friendly highway material disclosed by the invention has the beneficial effects of better construction workability, shorter open traffic and longer effective compaction time, so that the road construction quality is improved.
Owner:QINGDAO JIZHI ENERGY SAVING ENVIRONMENTAL PROTECTION
Rapid repairing method for asphalt pavement
PendingCN112663430AFast operationFast open trafficPaving reinforcementsIn situ pavingsLayered structureReflective crack
The invention provides a rapid repairing method of an asphalt pavement. The method comprises the following steps: carrying out opening along a crack of the asphalt pavement to obtain a repairing groove, wherein the width of the opening position of the repairing groove is greater than or equal to the width of the crack, and the depth of the repairing groove is greater than or equal to the width of the crack; coating the side wall of the repairing groove with modified emulsified asphalt; and filling the repairing groove with an asphalt mixture to form an asphalt layer, wherein when the depth of the repairing groove is larger than 3 mm, the asphalt layer includes two or more layers of layered structures, and a road surface reinforced net is arranged between at least two layers of layered structures. The method is combined with a road surface reinforced net laying technology, existing cracks can be well repaired, the strength of a newly-repaired pavement can be enhanced, and reflection cracks can be basically avoided.
Owner:安徽交控工程集团有限公司 +2
A kind of two-component liquid joint glue for normal temperature pavement and preparation method thereof
ActiveCN110105911BSolve the problem of heating and polluting the environmentNo heating requiredNon-macromolecular adhesive additivesPolyureas/polyurethane adhesivesParaffin waxChemical synthesis
Owner:河北德瑞公路工程有限公司
Castable material used for rapidly restoring city bridge expansion joint concrete and preparation method thereof
InactiveCN107628794AImprove the forceImprove bending resistanceSolid waste managementExpansion jointFiber
The invention discloses a castable material used for rapidly restoring city bridge expansion joint concrete and a preparation method thereof, which relates to the field of a novel pavement material. Each cubic meter of the castable material comprises the following raw materials by content ratio: micro steel fiber accounting for 5-15% of mass of cement, 900-1150 kg of a coarse aggregate, 550-800 kgof a fine aggregate, 450-500 kg of cement, micro silicon powder accounting for 6-12% of mass of the cement, iron black powder accounting for 4-8% of mass of the cement, 100-160 kg of water, a water reducer accounting for 1.0-1.6% of mass of the cement, an expanding agent accounting for 5-10% of mass of the cement, and a polymer emulsion accounting for 6-15% of mass of the cement. The castable material can satisfy the requirements of rapid opening to traffic, high early strength, good endurance, good cohesive property with the original concrete, and small aberration with the bridge asphalt concrete.
Owner:WUHAN HANYANG MUNICIPAL CONSTR GRP CO LTD
A rapid repair method for asphalt pavement cracks
InactiveCN103758009BPrevent infiltrationAvoid spreadingPaving detailsRoad engineeringArchitectural engineering
Owner:SHANDONG TRANSPORTATION INST +2
Bridge head pavement subsidence nondestructive quantitative detection and non-excavation type rapid treatment grouting construction method
InactiveCN113529549AImprove liquidityImprove permeabilityRoads maintainenceStructural engineeringRoad surface
The invention discloses a bridgehead pavement subsidence nondestructive quantitative detection and non-excavation type rapid treatment grouting construction method. The method is characterized in that; the construction method comprises the following steps: (1) carrying out rapid nondestructive testing and quantitative evaluation on pavement void; (2) drilling; (3) arranging a jacking monitoring system; (4) mounting a grouting pipe and installing a grouting head; (5) grouting; (6) performing hole sealing; (7) performing quality control; and (8) performing grouting effect detection. The method solves the industrial problems of large excavation scale, high construction difficulty, difficulty in thorough treatment and large traffic interference in treatment of the bridgehead pavement subsidence disease.
Owner:SICHUAN ROAD & BRIDGE GRP
Activated waste rubber powder mixture for noise reduction micro-surfacing
The invention discloses an activated waste rubber powder mixture for noise reduction micro-surfacing. The raw materials of the activated waste rubber powder mixture comprise mineral material, modifiedemulsified asphalt, activated waste rubber powder, cement, octadecyltrimethylammonium chloride and composite additive, and the composite additive is a mixture of polyphenylsiloxane, N,N-dicyclohexyl-2-benzothiazolyl sulfenamide, chloroprene rubber, polypropylene glycol diacrylate, polytetrahydrofuran ether and a crosslinking agent. The compatibility and the bonding performance of the rubber powder and the mineral material with asphalt are improved to improve the noise reduction effect, the viscosity, the viscosity and the toughness of the asphalt are improved by an asphalt modifier to improvethe weather resistance, the water resistance and the flow resistance of the noise reduction micro-surfacing and enhance the noise reduction effect, and the octadecyltrimethylammonium chloride is usedto enhance the micro-surfacing strength formation speed in order to achieve the purpose of rapid opening to traffic; and the compatibility of all the components is improved through the composite additive, the mechanical energy is converted into movement energy of micro-molecular chain or segments, and the mechanical energy is converted into the form of thermal energy to dissipate, so the noise reduction effect is improved.
Owner:海南省交通规划勘察设计研究院 +1
Bridge expansion joint protective pouring system
PendingCN113652191AImprove adhesionAvoid debondingNon-macromolecular adhesive additivesPolyureas/polyurethane adhesivesPolymer sciencePtru catalyst
The invention relates to a bridge expansion joint protective pouring system which is a mixture of a component A, a component B and a component C. The component A comprises, by mass, 30-60 parts of a polyurethane prepolymer, 5-10 parts of a plasticizer, 1-5 parts of a catalyst, 1-5 parts of a defoaming agent, 0.5-2 parts of a water removal agent and 7-20 parts of filler. The component B comprises 10-20 parts by mass of epoxy resin, 1-8 parts by mass of a diluent and 1-3 parts by mass of a thixotropic agent; the component C comprises 1-5 parts by mass of a high-activity curing agent; 1-5 parts by mass of a medium-activity curing agent; and 0.5-2 parts by mass of a coupling agent. After the component B and the component C are mixed, epoxy groups can react with amino groups for curing; the epoxy resin and the metal have excellent bonding performance, so that the component B and the component C can be firmly bonded with a steel structure of the expansion joint after being cured.
Owner:CHANGZHOU ARCHITECTUAL RES INST GRP CO LTD +1
A kind of high-performance asphalt mixture for steel bridge deck pavement and preparation method thereof
ActiveCN104944843BEmission reductionGood environmental benefitsSolid waste managementFrostRoad engineering
Owner:辽宁省交通科学研究院有限责任公司
Construction method of open-graded drainage type epoxy asphalt ultrathin anti-skid wearing layer
InactiveCN111021183AIncreased durabilityLess consumablesIn situ pavingsPaving gutters/kerbsEpoxyStructural engineering
The invention provides a construction method of an open-graded drainage type epoxy asphalt ultrathin anti-skid wearing layer, and belongs to the technical field of highway construction. The anti-skidwearing layer is composed of an open-graded epoxy asphalt mixture with the porosity ranging from 15% to 20%, and the total thickness of the anti-skid wearing layer is about 1 cm. The invention aims toprovide the construction method of the ultrathin anti-skid wearing layer for improving the drainage property and the skid resistance of the pavement. Starting from the whole process of mixing, transporting, paving, rolling and the like, the formed wearing layer has enough pavement performance and plays a role in surface layer drainage, the phenomenon of water drifting generated when an automobileruns at a high speed is reduced, the contact area of tires and a road surface is increased, and the anti-skid capacity is improved; the thickness of the wearing layer is controlled to be about 1 cm,the ultrathin anti-skid wearing layer is formed, the construction cost is reduced, and the traffic opening time after construction is shortened.
Owner:SOUTHEAST UNIV
Environment-friendly road surface paving material
The invention discloses an environment-friendly road surface paving material. The environment-friendly road surface paving material is characterized by comprising the following substances in parts by weight: 60-75 parts of gravels, 11-13 parts of ruditapes philippinarum shell powder, 9-13 parts of razor clam shell powder, 8-13 parts of clam shell powder, 2-6 parts of a thickening agent, 15-20 parts of urea formaldehyde resin, 12-16 parts of polytetrafluoroethylene gum, 3-8 parts of organic silicon modified epoxy resin, 7-13 parts of sodium carbonate, 3-6 parts of calcium carbonate, 9-14 parts of potassium dichromate and 3-5 parts of fillers. The environment-friendly road surface paving material has the beneficial effects that the construction workability is very good; the opened traffic is short and the effective compaction time is long, so that the road construction quality is improved.
Owner:QINGDAO UWELL INFORMATION TECH
Activated waste rubber powder noise reduction micro-surfacing mixture
The invention discloses an activated waste rubber powder noise-reducing micro-surfacing mixture. Said composite additive is the mixture of polyphenylsiloxane, N,N-dicyclohexyl-2-benzothiazyl sulfenamide, chloroprene rubber, polypropylene glycol diacrylate, polytetrahydrofuran ether and cross-linking agent; Improve the compatibility and bonding performance of rubber powder and mineral aggregates with asphalt, improve the noise reduction effect, and improve the viscosity, toughness and toughness of asphalt through asphalt modifiers, thereby improving the weather resistance and water resistance of the noise reduction micro-surface and fluidity resistance, enhance the noise reduction effect, increase the speed of micro-surface strength formation through octadecyltrimethylammonium chloride, and achieve the purpose of rapid opening of traffic; enhance the compatibility of each component through compound additives, and The mechanical energy is converted into the kinetic energy of the micromolecular chain or segment, and the mechanical energy is converted into thermal energy to dissipate, improving the noise reduction effect.
Owner:海南省交通规划勘察设计研究院 +1
Preparation method and application of composite modified cement repairing material
The invention relates to a preparation method and an application of a composite modified cement repairing material. The composite modified cement repairing agent is composed of a polymer cement mortarpremix and water, the polymer cement mortar premix is prepared from a polymer cement mixture and fine aggregate, and the polymer cement mixture is prepared from, by weight, 90-95 parts of cement, 0.05-0.15 part of fibers, 4-8 parts of silica fume and 0.2-0.6 part of dispersible latex powder. The composite modified cement rapid repairing material provided by the invention can be used for rapidly repairing surface layer diseases such as honeycombs, pitted surfaces, dusting, peeling, freeze thawing, bone exposure and micro-cracks of cement concrete pavements of highways, toll stations, airports,bridges and the like, the repairing thickness is about 3-10mm, and the repairing material has the advantages of good adaptability, excellent construction performances, high bonding strength with original cement pavements, good durability, and rapidness in traffic opening.
Owner:CHINA HIGHWAY ENG CONSULTING GRP CO LTD +1
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