1673results about "Paving details" patented technology

The invention discloses an environment-friendly high-strength water-stop belt and a preparation method thereof, and relates to the technical field of high-molecular compound composition water-stop belts. The environment-friendly high-strength water-stop belt is prepared from the following components in parts by mass: 100 parts of ethylene propylene diene monomer, 40 to 70 parts of reinforcing filler, 10 to 25 parts of environment-friendly plasticizer, 1 to 5 parts of interface modifier, 1.5 to 3.5 parts of vulcanizing agent, 3 to 8 parts of active agent, 1 to 3 parts of anti-aging agent and 5 to 15 parts of flame retardant. White carbon black and calcium carbonate are adopted as reinforcing filler to replace traditional carbon black, and energy consumption and pollution emission in the production process are remarkably reduced. By optimizing the formula and the preparation process, the tensile strength, the elongation at break, the tearing strength and other mechanical properties of the waterstop are remarkably improved. Aluminum hydroxide is added as a flame retardant, absorbs heat during thermal decomposition and forms a barrier layer, so that oxygen is effectively diluted, and fire spreading is prevented.

The invention provides a method and system for controlling ventilation cooling type permafrost subgrade based on energy dynamic balance, wherein the method comprises the steps of constructing a heat absorption predicting model; and inputting an operating condition combination of a permafrost subgrade into the heat absorption predicting model to produce a predicted heat absorption for the permafrost subgrade, and controlling a cooling system to operate based on the predicted heat absorption. The heat absorption predicting model is constructed based on a seed point algorithm of formula matrix, which comprises the steps of producing a known fitting formula; establishing a formula matrix; and calculating a predictive fitting formula corresponding to a new seed point by known seed points in the formula matrix and an index formula, and then calculating the predicted heat absorption based on the predictive fitting formula.

The invention belongs to the technical field of asphalt pavement construction, and discloses a municipal road reconstruction engineering asphalt pavement construction quality control method, which specifically comprises the following steps: 1, carrying out three-dimensional laser scanning surveying and mapping on longitudinal and transverse joints and crack distribution of an original cement concrete pavement in the treatment research of the original pavement; the geometrical morphology and modulus characteristics of an original pavement are accurately analyzed through three-dimensional laser scanning and a dynamic modulus test, the thickness design of an asphalt layer is optimized, adaptive materials are intelligently screened according to climate characteristics and traffic load grades of a construction area, and the performance stability of an asphalt mixture is improved; meanwhile, by means of the intelligent paving technology, the flatness and thickness uniformity of a paving layer are guaranteed, the paving temperature is accurately controlled, the paving performance of the mixture is improved, rolling parameters can be automatically adjusted according to key information such as the paving thickness and the temperature, and the uniformity of the compaction quality is improved.

The invention discloses a cold-mixed and cold-laid ultrathin overlay asphalt mixture which is prepared from the following raw materials in parts by weight: 8-15 parts of rubber powder composite emulsified asphalt; 80 to 90 parts of aggregate; 0.3 to 0.5 part of polymer fiber; 0.5 to 1 part of an interface coupling agent; the invention also provides a construction process of the cold-mixed and cold-laid ultrathin overlay asphalt mixture. The rubber powder composite emulsified asphalt is obtained by emulsifying the composite modified asphalt prepared from the ground rubber powder of the waste tires and the SBS rubber, so that the performance index of the emulsified asphalt is greatly improved, and the bonding performance of a cold-mixed thin-layer asphalt mixture and an original pavement is ensured; in addition, by adding the polymer fibers, the structural strength and the crack resistance of the ultrathin overlay can be remarkably improved. The invention can significantly reduce energy consumption and environmental pollution, and has the advantages of noise reduction, environmental protection, low cost and the like.

The invention provides a two-component permeable super-viscous anti-freezing coating and a construction process and equipment. The two-component permeable super-viscous anti-freezing coating comprises a component A, namely a high-permeability super-viscous anti-freezing coating consolidation material (anti-freezing component), and a component B, namely a high-permeability super-viscous anti-freezing coating carrier anti-skid material (carrier component). By utilizing special equipment, an anti-freezing material, emery, a penetrating agent, an adhesive, modified emulsified asphalt and the like are uniformly mixed and spread on an asphalt pavement of a road, and the double-component permeable super-viscous anti-freezing coating has the effects of melting ice and snow, pre-maintaining the pavement, filling tiny cracks and surface gaps, preventing water, inhibiting looseness and the like; the emery can increase the roughness degree of the road surface and play roles in increasing the friction coefficient of the road surface and ensuring the driving safety, so that the anti-skid performance of the road surface is improved, the damage of water, ice, snow and the like is avoided, and the purposes of protecting the structure of the road surface and prolonging the service life of the road surface are achieved; the method is an economical, effective, convenient and fast preventive maintenance measure.

The invention discloses an efficient preparation and construction optimization system and method for a cold patch asphalt mixture, and belongs to the technical field of construction optimization. Environmental parameters of a construction site are collected, including altitude, an air pressure correction coefficient and a light volatile factor, and a multi-scale mixture model coupled with air pressure response is constructed; analyzing the volatilization path, the structural stability and the initial bonding strength of the mixture in combination with discrete elements and fluid mechanics simulation, and further extracting a structural retention threshold value and reversely deducing the proportion adjustment amount of medium-high boiling point solvent components; meanwhile, a microcapsule controlled release technology is adopted to delay release of light components, adaptive construction parameters are output based on a simulation platform and a machine learning model, the paving temperature and the compaction frequency are dynamically optimized, and efficient cooperation and intelligent regulation and control of the cold patch material performance and the site construction technology are achieved.

The invention relates to an asphalt mixture, in particular to a modified heavy-load asphalt mixture based on a basalt fiber composite material as well as a preparation method and application of the modified heavy-load asphalt mixture. The modified heavy-load asphalt mixture based on the basalt fiber composite material is prepared from the following raw materials in parts by weight: 10 to 15 parts of asphalt, 1 to 3 parts of modified basalt fiber, 1 to 3 parts of aminated chitin whisker, 85 to 90 parts of mineral aggregate, 5 to 8 parts of hollow glass microspheres, 3 to 6 parts of compatilizer and 1 to 3 parts of stabilizer. Wherein the modified basalt fiber improves the low-temperature crack resistance, high-temperature rutting resistance and water stability of the asphalt mixture, and the aminated chitin whisker improves the fatigue resistance of the asphalt mixture.

The invention discloses an anti-skid and long-service-life assembled bio-based modified pavement and a preparation process of the anti-skid and long-service-life assembled bio-based modified pavement. According to the assembly type bio-based modified pavement with the lasting function, main diseases existing in a current pavement are effectively solved from the aspects of water sealing, cracking prevention, high skid resistance and the like, the pavement has the advantages that a carpet type pavement is conventionally rollable and convenient and rapid to construct, and due to the high-performance characteristics of a cementing material and a binding material, the pavement is extremely thin and is only 3-7 mm in thickness, so that the pavement has the lasting function. And the composite material has the characteristics of high toughness (the elongation at break can reach 20-50%), high elasticity and high binding power, can be bent and folded, can inhibit multi-scale cracks of the existing pavement structure, and can still ensure the overall effect of the composite material even if a wide crack of 2cm is reached.

The invention provides a sidewalk antiskid terrace material and a construction process thereof, and belongs to the technical field of terrace material manufacturing. The sidewalk antiskid terrace material is prepared from the following components: epoxy resin, polysiloxane elastic resin, fluorocarbon resin, modified covalent organic framework nanosheets, boron nitride nanotubes, nano silicon nitride particles, nano silicon dioxide, nano zinc oxide, a modified flame retardant, attapulgite, a curing agent, an accelerant, a flatting agent, a coupling agent and a dispersing agent. According to the sidewalk antiskid terrace material, various high-performance resins are compounded with the nano filler to form a coating with a compact and uniform structure, so that the mechanical strength and wear resistance of the terrace are remarkably improved. In addition, due to the application of the modified flame retardant, the floor has a good flame-retardant effect, and the safety is improved. The whole formula and the construction process are scientific and reasonable, strong adhesion of the coating is ensured, construction is simple and convenient, curing is sufficient, and the coating is suitable for long-term use of outdoor sidewalks and has attractive appearance and practicability.

The utility model relates to the field of railway traffic engineering, and discloses a contact net pillar convenient to overhaul based on a high platform, which comprises a stand column, a stand column base is arranged at the lower end of the stand column, and a cross beam is fixedly connected to the upper end of the side face of the stand column and used for installing a high-voltage wire. A protective wall is arranged on the side face of the stand column base, a handrail is fixedly connected to the upper side face of the protective wall, a riffled plate is arranged at the upper end of the inner wall of the protective wall, and the stand column protective device is arranged between the protective wall and the stand column base. The supporting column can be effectively protected from being affected by the external environment, durability is enhanced, and investment waste is reduced.

The system for deicing black ice includes a plurality of laser scanners that are arranged at intervals along a road, each laser scanner including a light source unit, a non-contact temperature sensor, and a control unit that controls an operation of radiating the laser to the area in charge, a weather sensor that measures a temperature and humidity, and an integrated controller that communicates with the plurality of laser scanners. The integrated controller determines whether the laser is radiated to the road surface based on at least one of the measured temperature and humidity, and when the laser radiation is determined, generates a control signal to activate at least one laser scanner, and the control unit determines a heating area, and generates a pulse signal to turn on / off a light source unit so that the laser is radiated in accordance with a shape and range of the heating area.

The invention relates to the technical field of rainwater collection, in particular to a road surface rainwater collection system which comprises PP modules, side plates, lower water conservancy project cloth, upper water conservancy project cloth, tightening rings and limiting assemblies. The lower hydraulic fabric is laid in the foundation pit; the tank body is stacked on the lower hydraulic cloth; the lower hydraulic fabric is folded upwards and attached to the side plates; the upper water conservancy project cloth covers the top of the pool body, and is downwards folded and attached to the lower water conservancy project cloth on the vertical side wall of the pool body; the lower hydraulic cloth and the upper hydraulic cloth are hooped and sealed by the hooping ring, so that when a full water test is carried out, the lateral water pressure resistance of the side plate is improved, the side plate is prevented from laterally moving, and inaccurate test results caused by deformation of the side plate are prevented.

The utility model discloses a rigid-flexible composite honeycomb long-life pavement structure capable of melting snow and ice, which comprises a roadbed layer, a cushion layer, a base layer, a rigid layer and a flexible layer from bottom to top; the rigid layer is composed of honeycomb prefabricated blocks; geothermal heat pipes are placed in the gaps and concave surfaces between the honeycomb prefabricated blocks of the rigid layer itself, the geothermal heat pipes are placed in the width direction of the road surface, the geothermal heat pipes themselves are located at both ends in the width direction of the road surface and are aligned with the positions on both sides of the width of the road surface itself, the geothermal pad pipes themselves are located at both ends in the width direction of the road surface and extend downward to the ground to be connected to the pipe mouth of an air power pump; the flexible layer comprises the concave surfaces in which the geothermal heat pipes are placed between the honeycomb prefabricated blocks of the rigid layer, a flexible filling layer in the gap and a flexible surface layer arranged on the rigid layer; the geothermal heat pipes are made of metal; the utility model ensures that the rigid asphalt pavement can be used for a long time while taking into account the ability to melt snow and ice.

Pavement aging can be reduced by applying to an asphalt-containing pavement a topcoat layer or a surface treatment containing asphalt binder emulsion with sterols.

The invention belongs to the technical field of court ground materials, and particularly relates to a ground material of a ground throw court and a preparation method thereof. The ground material of the ground throwing field comprises the anti-skid surface layer, the elastic buffer layer and the sound insulation layer from top to bottom, and has excellent sound insulation, impact resistance and wear resistance. The polyvinyl butyral bonded acrylic sound insulation felt and the jute fiber board are used as a sound insulation felt composite material to be laid on the surface of the base layer, so that the sound insulation effect of the ground of the ground throwing field is enhanced, boric acid and phenylboronic acid are compounded to react with siloxane, and reinforced gel prepared by adding a reinforcing material has excellent shear hardening and thermal stability, so that the sound insulation effect of the ground of the ground throwing field is improved. An elastic reinforcing material is prepared by compounding alkali-treated straw fibers and a reinforcing body prepared by compounding the alkali-treated straw fibers and a hydrophobically modified sponge framework, and has remarkable creep resistance and excellent impact hardenability, and the esterified straw fibers prepared by reacting the alkali-treated straw fibers with citric acid are used as a toughening agent to be added into wear-resistant elastic microspheres prepared by rubber, so that the wear-resistant performance of the wear-resistant elastic microspheres is greatly improved. The material has excellent wear resistance, light weight and aging resistance.

A ground surface treatment vehicle and systems and methods using the same. In some embodiments, the vehicle may be adapted to autonomously or semi-autonomously identify and optionally treat target areas such as divots on turf surfaces. The vehicle may identify the target area via onboard or remote sensors and autonomously treat the target area by providing a treating material such as infill, seed, particulate matter, and liquids.

To provide a road surface forming auxiliary member capable of forming a road surface in which a drainage channel is formed and which is suppressed from cracking. [Solution] In a road surface molding auxiliary member 1, a water storage member 21 comprises a pair of wall portions 22 that extend substantially horizontally and face each other, and a plurality of connection portions 23 that partially connect the upper portions of the pair of wall portions 22, and in the portion of the upper portion of the pair of wall portions 22 where the connection portion 23 does not exist, a through hole H that communicates with a water storage space S1 formed between the pair of wall portions 22 is formed, and the water storage spaces S1 of the two intersecting water storage members 21 are communicated. By engaging the engagement portions 3 of the plurality of road surface molding auxiliary members 1 with each other, a casting space S2 surrounded by the plurality of water storage members 21 is formed. By hardening the road surface molding material cast into the casting space S2, a road surface is formed that allows water to flow from the through hole H into the water storage space S1.

To provide a road surface forming method capable of easily forming a flat road surface on which a drainage channel is formed. [Solution] A road surface molding auxiliary member 1 comprises a plurality of water storage members 2, each having a water storage space S1 formed therein and with the water storage space S1 open at the bottom, and a blocking portion 3 formed on the top of each water storage member 2 to block the water storage space S1. The plurality of water storage members 2 are arranged on a plane and are connected directly or indirectly to adjacent water storage members 2. The road surface molding method comprises the steps of pouring road surface molding material onto the road surface molding auxiliary member 1 to a height substantially equal to or greater than the blocking portion 3, and grinding the blocking portion 3 and the hardened road surface molding material until at least the opening H1 of the water storage space S1 is exposed. The blocking portion 3 is formed from a material that can be ground together with the hardened road surface molding material.

The utility model discloses a heat pipe and heat pump snow melting assembly utilizing a ground source, and belongs to the technical field of geothermal utilization. The underground buried pipe heat removal unit comprises a solution circulating pump, a circulating pipeline I, a U-shaped buried pipe type heat exchanger and measuring equipment I; an outlet end of the solution circulating pump is communicated with an inlet of the U-shaped buried tubular heat exchanger, the U-shaped buried tubular heat exchanger is pre-buried underground, and an outlet of the U-shaped buried tubular heat exchanger is communicated with an inlet of an evaporator heating chamber of the heat pump unit through the first measuring device. An outlet of an evaporator heating chamber of the heat pump unit is communicated with an inlet of the solution circulating pump through a first circulating pipeline. The composite pavement unit is heated by utilizing heat of a ground source, so that the temperature of the composite pavement unit is increased to the snow melting temperature, the composite pavement unit has better environmental compatibility and friendliness, resources can be reasonably utilized, and the snow melting process is free of pollution and corrosion phenomena.

To provide a road surface forming auxiliary member that can form a road surface with a high degree of freedom, in which a drainage channel is formed and cracking is suppressed. [Solution] A through hole H1 communicating with the water storage space S1 is formed in the upper part of the water storage member 2, and the water storage space S1 is open on the lower side of the water storage member 2. A plurality of first engaging portions 24 are formed in the water storage member 2, and a second engaging portion 31 engageable with the first engaging portion 24 is formed in the wall member 3. By connecting the plurality of water storage members 2 via the wall member 3, individual spaces S2 surrounded by the plurality of water storage members 2 and the plurality of wall members 3 are formed, and by hardening the road surface molding material poured into the individual spaces S2, a road surface is formed that allows water to flow from the through hole H1 into the water storage space S1.

Pavement aging can be reduced by applying to an asphalt-containing pavement a topcoat layer or a surface treatment containing asphalt binder with sterols.

The invention relates to the field of material science, and discloses an asphalt concrete pavement segment joint anti-cracking method and system based on an odor removal technology, and the method comprises the steps: fitting a pavement segment joint model of a segment joint; analyzing a damage area and a fracture area of the pavement segment joint model, and analyzing a material stiffness modulus and a material relaxation modulus of the asphalt concrete; constructing a viscoelastic damage model of the asphalt concrete, calculating the viscoelastic damage coefficient of the asphalt concrete, and analyzing the asphalt viscoelasticity of the asphalt concrete; fitting a crack analysis model of the segment joint, and simulating pavement damage evolution of the segment joint; mixing the chemical additive and the asphalt concrete, and analyzing the viscosity effect of the geotechnical mixed material; and determining the optimal elastic modulus of the geotechnical mixed material, analyzing the anti-cracking effect of the geotechnical mixed material, and executing the anti-cracking scheme of the corresponding section joint of the asphalt concrete pavement. The anti-cracking effect of the asphalt concrete pavement segment joint can be improved.

The present invention discloses a constant temperature system for roadbed and pavement, which relates to the technical field of road temperature control, and includes a ground heat exchange component arranged below the road surface; a buried pipe heat exchange device buried underground; a pipeline component; a heat pump unit, the buried pipe heat exchange device is connected to the heat pump unit; the heat pump unit is connected to the ground heat exchange component; a solar device, the solar device is connected to the heat pump unit; a cooling water device, the cooling water device is connected to the heat pump unit; a phase change energy storage device, the phase change energy storage device is connected to the solar device and the cooling water device; the phase change energy storage device can input hot water in the solar device for heat exchange and energy storage, and output the cooling water after heat exchange to the cooling water device for cold storage; the phase change energy storage device can input cooling water in the cooling water device to heat it up, and output the heated water to the heat pump unit through the pipeline component for heating. The present invention comprehensively utilizes various forms of energy to achieve heat balance regulation of roadbed and pavement in different seasons.

The invention belongs to the technical field of polyurethane foam, and particularly relates to a polyurethane grouting material and application thereof. The polyurethane grouting material provided by the invention comprises a component A and a component B which are independently subpackaged, the component A comprises the following components in parts by mass: 100 parts of polyether polyol, 1-5 parts of an organic silicon surfactant, 1-10.0 parts of a catalyst and 0.2-2.5 parts of a foaming agent; and the component B is isocyanate. Data of the embodiment show that the polyurethane grouting material provided by the invention has the advantages of excellent flowability and rapid curing, and the prepared foam has good mechanical properties and stability. Meanwhile, the polyurethane grouting material meets the requirements of the Monte Protocol for protecting the ozone layer and the Beijing Protocol for reducing the emission of greenhouse gases.

The invention discloses a high-performance concrete repairing material, application and a concrete structure repairing method, and belongs to the technical field of concrete structure repairing. The high-performance concrete repairing material is prepared from Portland cement, rapid hardening cement, an inert mineral admixture, an early strength agent, a submicron mineral admixture, a nano material, an anti-freezing binder, fibers, a retarder, a volume compensating agent, fine aggregate, coarse aggregate, a water reducing agent, a defoaming agent and water. Through the interaction of all the components, the functions of early strength, volume stability, freezing resistance, salt freezing resistance, fracture resistance, shrinkage resistance and the like are achieved, through the synergistic effect of all the components in the material, the overall performance of the material is improved, and the material has excellent adaptability and multifunctionality under different environmental conditions; therefore, long-term stable guarantee is provided for application in various damage scenes, and the proportion of each component of the material can be adjusted according to actual requirements of concrete structures so as to meet efficient repair in different damage scenes.

The invention discloses a pavement adaptive to a magnetic resonance type dynamic wireless charging system as well as a construction process, a lane and application of the pavement, and belongs to the field of road engineering and road infrastructures. The pavement comprises a lower surface layer, a middle surface layer and an upper surface layer, wherein an input power line of the magnetic resonance type dynamic wireless charging system is distributed on the surface of the middle surface layer, and then a synchronous broken stone sealing layer is adopted to ensure that the input power line is completely embedded; the middle of the upper surface layer is made of pouring asphalt concrete, and two sides are made of wear-resistant asphalt concrete; a transmitting coil of the magnetic resonance type dynamic wireless charging system is embedded in the pouring type asphalt concrete, and the transmitting coil is connected with an input power line. The mechanical compatibility performance of the transmitting coil and the road surface is improved through the special road surface design, the charging efficiency is greatly improved by cooperating with the control system to optimize electric energy input, wireless charging of the vehicle in the high-speed advancing process is finally achieved based on the magnetic resonance coupling principle, and the wireless charging device has the convenient construction technology and the excellent road performance.

The application discloses a self-repairing crystal anti-permeation high-durability cement-based material, a cement-based surface structure and a paving method thereof. The self-repairing crystal anti-permeation high-durability cement-based material comprises the following components in parts by weight: Portland cement 40-60 parts, wear-resistant aggregate 35-50 parts, water reducing agent 0.02-0.05 parts, retarder 0.2-0.5 parts, redispersible emulsion powder 1-2 parts, silica fume 1-2 parts, expanding agent 1-3 parts, chelating agent 1-6 parts and crystallization precipitant 1-6 parts; the total amount of the above components is 100 parts; the chelating agent is diethylenetriamine pentaacetic acid, and the weight ratio of the chelating agent to the crystallization precipitant is (0.5-2):1. The cement-based material has excellent self-repairing property, so that the strength, durability and anti-permeation property of the cement-based material are significantly improved.

The invention belongs to the field of vehicle-road cooperation self-driven sensing, and particularly relates to an intelligent road network medium for vehicle-road cooperation triboelectricity self-driven sensing. Comprising an embedded high-elasticity triboelectric self-driven sensing unit (1), a grating type middle interlayer (2), an upper steel base plate (301), a lower steel base plate (302), a steel strut and spring (303), cushioning foam (4), a high-strength flexible nano-modified caulking layer (5) and a high-strength high-toughness waterproof packaging layer (6). The embedded high-elastic triboelectricity self-driven sensing unit (1) is prepared by selecting two flexible materials with remarkable electronegativity difference according to triboelectrification and electrostatic induction effects. The method is suitable for sensing vehicle and road information such as road average speed, vehicle weight, road surface state and the like, and the sensing range is 10-120km / h of vehicle speed, 2-20t of vehicle weight and 0.35-0.8 of road surface friction coefficient. Compared with the prior art, the method has the advantages of multiple sensing information, wide sensing range, high sensing precision, high sensing network coverage rate and the like.

The invention discloses an anti-slip photovoltaic floor tile and a manufacturing method thereof, and relates to the technical field of photovoltaic building integration, and the anti-slip photovoltaic floor tile comprises an integrally packaged photovoltaic module. The rough anti-skid layer with a high friction coefficient is formed by adopting the glaze-plated anti-skid tempered glass layer and applying special pretreatment and a dry granular glaze sintering process, in the aspect of power generation performance, standard double-glass packaging is matched with the reflection synergistic effect of the white PVB adhesive film, the efficient and reliable photoelectric conversion capacity is ensured, and the service life of the photovoltaic module is prolonged. And excellent waterproof, dustproof, weather-proof and anti-aging performances are provided through comprehensive sealing protection, long-term durability in outdoor harsh environments is guaranteed, in addition, a lead hole is preset, the positive and negative electrode connectors capable of being quickly plugged and unplugged and a base is integrated with a lead channel design, convenient, safe and hidden wiring of electrical connection is realized, and the service life of the electric connector is prolonged. The installation and maintenance process is greatly simplified, the ground space utilization efficiency is remarkably improved, and the photovoltaic power generation function is perfectly integrated into ground pavement.