185 results about "Bituminous materials" patented technology

The invention relates to the technical field of asphalt material preparation, in particular to a cold-mixing and cold-spreading waterborne acrylic hybrid epoxy environment-friendly asphalt material preparation process which comprises the following steps: physically mixing waterborne acrylic emulsion and waterborne epoxy emulsion to obtain waterborne acrylic hybrid epoxy emulsion; adding the asphalt pavement milling material and an activating agent into vibration stirring equipment, and stirring to obtain an activated milling material; after the activated milling material is obtained, continuously adding the water-based acrylic hybrid epoxy emulsion, the curing agent and the cold-mixed asphalt modifier into the vibration stirring equipment, and stirring and coating at normal temperature; pure water is added into the vibration stirring equipment, and the torque of the vibration stirring equipment and the temperature of the asphalt mixture are collected within a preset time period after the pure water is added; determining a local coating non-uniform evaluation value and a viscosity evaluation coefficient of the asphalt mixture; the curing reaction in the vibration stirring equipment is regulated and controlled, and the prepared asphalt material is obtained. The mechanical property of the prepared asphalt material is improved.

The invention discloses an asphalt material anti-rutting performance prediction and design optimization method based on data driving, which comprises the following steps: sorting and preprocessing data obtained by a dynamic shear rheometer test of a rubber powder / SBS composite modified asphalt material with various contents in different aging states, and calculating the rutting resistance of the asphalt material by adopting a grey correlation analysis method; screening the data set based on a gray analysis result, and determining input and output of a prediction model; three machine learning models of GPR, LSBboost integration and ANN are established, the deformation resistance of the asphalt material is predicted, a better model is obtained through multi-index comparison, and the prediction result of the optimal model is explained based on SHAP; and based on the optimal prediction model, performing targeted design optimization on the formula of the asphalt material by using a Bayesian optimization algorithm, and simulating application requirements under different actual working conditions by limiting part of parameters in the formula. According to the invention, the test cost of the asphalt material in deformation resistance test and formula design is reduced.

The invention belongs to the technical field of lithium ion battery negative electrode materials and coated asphalt, and discloses a preparation method and application of a coating material easy to graphitize. The preparation method comprises the following steps: by taking one or more than two of petroleum residual oil, ethylene tar, medium and low temperature coal tar, coal pitch, petroleum pitch and maltha as raw materials, adding a blending solvent and a catalyst to obtain a blending raw material; the easily-graphitized coating material with relatively low interlayer spacing after carbonization is obtained by sequentially carrying out blending solvent compounding, boron doping and pressurized polymerization or sequentially carrying out blending solvent compounding, boron doping, pressurized polymerization, oxidation crosslinking and reduced pressure distillation / molecular distillation processes. The graphitization performance of the asphalt material is remarkably improved through boron doping, so that the asphalt material can form an ordered carbon layer structure at 1200 DEG C, carbonization shrinkage and microcrack generation are inhibited, and the compactness and uniformity of a coating layer are improved. The obtained coating material is suitable for the negative electrode of the lithium ion battery, and the first charge reversible capacity, the cycle stability and the rate capability of the battery can be improved.

The invention discloses a novel building waste asphalt material recovery device, relates to the technical field of building waste asphalt recovery, and provides the following technical scheme in order to achieve the purpose: the novel building waste asphalt material recovery device comprises a static jaw structure and a movable jaw structure which are arranged in a box body, the fixed inclined plate and the sliding inclined plate are arranged in the box body, and the sliding inclined plate slides up and down relative to the fixed inclined plate; the inclined plane sliding block mechanism is arranged between the fixed inclined plate and the sliding inclined plate in a sliding manner; the inclined plane sliding block mechanism longitudinally slides to drive the sliding inclined plate to transversely slide; the sliding inclined plate is connected with the wedge block through the sliding block and the sliding groove, up-and-down sliding of the wedge block is transmitted to the sliding inclined plate through the sliding block and the sliding groove, the wedge block is made to move transversely, and then the crushing gap between the static rack and the movable rack is changed; therefore, the device adapts to waste asphalt materials with different particle sizes.

The invention belongs to the technical field of asphalt preparation, and provides a high-modulus composite modified asphalt material based on natural asphalt and a preparation method thereof. The method comprises the following steps: separating natural asphalt into a high-molecular asphaltene section and a medium-low-molecular colloid section, and preparing activated asphaltene and colloid sections through alkali treatment and spray drying; a styrene-butadiene-styrene block copolymer and a polyurethane prepolymer are taken as the basis, and a dynamic cross-linked polymer is synthesized through the steps of hydrazide treatment, boric acid group introduction, glutaraldehyde cross-linking and the like; organic modified clay and phenylated chitosan are prepared, a polyaniline composite material is prepared through in-situ polymerization of aniline, a PANI-clay-biomass compound is obtained, the ultraviolet absorption characteristic of polyaniline and the shielding effect of montmorillonite cooperate, the ultraviolet aging resistance of the material is improved, through multi-stage temperature control dispersion, the anti-aging performance of the material is improved, and the anti-aging performance of the material is improved. The various modified materials are compounded with a natural asphalt substrate to obtain the high-modulus composite modified asphalt material based on the natural asphalt.

The invention relates to the technical field of pavement materials, in particular to an all-solid-waste imitation asphalt material as well as a preparation method and application thereof. The all-solid-waste asphalt-imitating material is prepared from the following raw material components: waste rubber powder, waste plastics, kitchen waste grease, waste petroleum resin and waste filler, wherein the waste filler is prepared from the following raw material components in percentage by mass: 20 to 30 percent of waste glass fiber, 15 to 20 percent of straw residue, 15 to 20 percent of spent bleaching clay and the balance of coal gangue powder. The all-solid-waste asphalt-imitating material provided by the invention has excellent pavement performance, and the raw material components are wastes, so that the preparation cost is low, the raw material components are easy to obtain, and the treatment pressure of the wastes can be effectively relieved. According to the technical scheme, the problems that in the prior art, the preparation cost of an imitated asphalt material is high, and the material performance cannot reach the traditional asphalt level, so that the mechanical performance of an imitated asphalt mixture prepared from the imitated asphalt material is poor are effectively solved.

The invention provides a visual observation test system for eroding a road asphalt material in a dynamic water pressure environment, and relates to the technical field of road engineering monitoring. The system comprises a dynamic water pressure environment bin, a transparent closed observation bin, a transparent storage rack and a pipeline connecting piece, a water outlet of the dynamic water pressure environment bin is connected with a water inlet of the transparent closed observation bin through the pipeline connecting piece, the transparent storage rack is arranged in the transparent closed observation bin, and a sample is placed on the storage rack; high-precision cameras are arranged on the top and the side faces of the transparent closed observation bin, a temperature sensor, a water pressure sensor and an exhaust valve are arranged on the top, and bulbs are arranged around the transparent closed observation bin. The system breaks through the limitation that in the prior art, a dynamic water pressure environment can only be simulated and generated in a closed container invisible to naked eyes, and the material degradation process is not clear, and comprehensive revelation of the water damage evolution law and the damage mechanism of gradual collapse of the road asphalt material is achieved. And a foundation is laid for long-life design and toughness improvement of the multi-physics coupling asphalt pavement.

The invention discloses waste rubber-plastic composite modified asphalt as well as a preparation method and application thereof, and relates to the technical field of modified asphalt materials, the waste rubber-plastic composite modified asphalt comprises the following components in parts by weight: 90-115 parts of matrix asphalt, 30-45 parts of a modified rubber-plastic composite material, 1-5 parts of naphthenic rubber oil and 0.2-0.7 part of sulfur. According to the invention, a CO2 supercritical fluid carrying ionic liquid swelling treatment process and a microwave plasma treatment process are mainly adopted to carry out combined synergistic treatment on the rubber-plastic mixture, so that the problem that the storage stability, the temperature resistance and the like of the rubber-plastic mixture in asphalt are obviously reduced due to overhigh doping content is effectively solved; on the premise of ensuring that the performance of the asphalt required by the road engineering material meets the standard, the recycling rate of the waste rubber powder and the waste plastic is remarkably improved, and a new means is provided for preparation of the modified asphalt and cyclic utilization of waste resources.

The invention discloses anti-aging modified asphalt and a preparation method thereof, and relates to the technical field of building materials, the anti-aging modified asphalt comprises the following specific components: base petroleum asphalt, a thermoplastic elastomer, an anti-stripping agent, an ultraviolet absorbent, an antioxidant and a softening agent; the additive comprises a nano montmorillonite modifier, a phosphate type flame-retardant anti-aging agent, a bio-based polyphenol antioxidant, a siloxane graft polymer and a carbon quantum dot light stabilizer; the preparation is performed based on the components. On the basis of a traditional modification system, multiple additives are cooperatively introduced, and a composite system with multiple shielding, free radical scavenging, weather-proof protection and macromolecule enhancement functions is constructed. According to the modification system, the high-temperature stability, the low-temperature flexibility and the water resistance of the asphalt material are remarkably improved on the macroscopic level, and meanwhile the aging process of the material is greatly delayed through the nanoscale barrier effect, the long-acting anti-oxidation mechanism and the light stabilization mechanism on the microscopic level.

The invention provides an asphalt material softening point prediction modeling method based on an infrared spectrum, and belongs to the technical field of road engineering material performance prediction. The method comprises the following steps: collecting infrared spectrum data of a multi-source asphalt sample and carrying out standardization pretreatment; fusing and extracting functional group quantitative features, wavelet multi-scale features and principal component dimension reduction features; constructing a high-stability feature subset by adopting a progressive feature optimization strategy guided by a physical mechanism; a self-adaptive Stacking fusion model is constructed and trained, the model integrates four base learners including PLSR, SVR, random forest and gradient boosting regression, and Bayesian ridge regression is used as a meta-learner to realize uncertainty quantification of a prediction result. The method can quickly output the predicted value of the softening point without a physical test, solves the technical problems of low efficiency and poor consistency of a traditional method, and is suitable for production quality control, on-site quick detection and formula optimization of asphalt materials.

The application relates to the technical field of composite asphalt materials, in particular to a composite asphalt material based on modified SBS and a preparation method thereof, which comprises the following steps: S1. After heating, base asphalt is added with aromatic oil, and stirring is carried out for 15-20 min to obtain softened asphalt; S2. Preparation of modified SBS; S3. Modified SBS is gradually added into the softened asphalt, and shearing is carried out for 30-40 min; S4. Modified waste rubber powder is added, and after continuous shearing, sulfur is added, development is carried out at a rotating speed of 800-1000 rpm for 50-60 min, and the composite asphalt material based on modified SBS is obtained after standing and defoaming. Through the synergistic effect of modified SBS, modified waste rubber powder and modified additives, the synchronous improvement of high-temperature performance, low-temperature performance and fatigue resistance is realized, the performance attenuation rate of the composite asphalt material under the conditions of thermal oxygen aging and ultraviolet aging is reduced, and the service life of the asphalt pavement is prolonged.

The invention provides a built-in dynamic water pressure environment eroded asphalt material observation test device and method, and relates to the technical field of road engineering monitoring tests. An observation bin component, a sample containing bin component and a background light source bin component in the device are arranged from top to bottom, the observation bin component is sealed and enclosed by a stainless steel container B and a transparent quartz round cover B, and a miniature high-definition camera, an LED lamp strip and a mobile power supply are arranged in the observation bin component; the background light source bin component is sealed and enclosed by a stainless steel container A and a transparent quartz round cover A, and an LED background light source is arranged in the background light source bin component; the observation bin component and the background light source bin component are fixed through a screw and a supporting sleeve, and a space formed between the observation bin component and the background light source bin component is a sample containing bin component and is completely exposed in a dynamic water pressure environment. The device can be used for quickly and effectively observing and quantitatively analyzing the evolutionary law of the surface topography characteristics of the asphalt material by means of illumination and image acquisition, comprehensively reveals a water damage mechanism, and lays a foundation for long-life design and toughness improvement of a multi-physics coupling asphalt pavement.

The present invention relates to the technical field of asphalt material data processing, and in particular to a method for establishing an asphalt material database management system. The method comprises the following steps: using a scanning electron microscope, an atomic force microscope, and an X-ray tomography device to perform imaging scans on asphalt material samples of different gradations, different modifier types, and different aging states, respectively, to obtain multi-scale asphalt material microscopic image data; analyzing the microscopic characteristics of the material samples based on the pre-processed multi-scale asphalt material microscopic image data to obtain asphalt material microscopic characteristic parameters; and creating an asphalt material database management system for the asphalt material microscopic characteristic parameters based on a relational database management system. The present invention creates an asphalt material database for multi-dimensional query by efficiently associating the microstructure and macroscopic properties of asphalt materials, thereby achieving efficient storage and rapid query of asphalt material data.

The invention discloses a rigidity-toughness synergistic enhanced heavy-load pavement composite material and a preparation method thereof, and belongs to the technical field of asphalt materials. The composite material is prepared from the following raw materials: 100 parts of matrix asphalt, 35 to 40 parts of composite aggregate, 5 to 6 parts of nano silica sol, 1.5 to 2 parts of linear SBS (Styrene Butadiene Styrene), 8 to 10 parts of rubber powder, 2 to 4 parts of bio-based polymer, 1.5 to 2.5 parts of aluminum borate whisker and 0.2 to 0.8 part of nano silicon carbide modified basalt fiber. A nano-micron-macroscopic multi-scale material design is realized through a'rigid particle-whisker 'composite reinforced network formed by nano silica sol and aluminum borate, molecular chain entanglement of linear SBS and a bio-based polymer, a'hard core-soft shell structure' formed by rubber powder and composite aggregate and the like; and the synergistic improvement of rigidity, toughness and durability is realized.

An improved substantially solid brick of non-volatile bituminous material has a shape that is defined by an irregular outer surface to minimize surface contact with nearby bricks when shipped in bulk. The overall shape is preferably that of a modified tetrahedron having three non-planar face surfaces, a top surface, and a surface or point. Both the top and bottom surfaces are preferably modified domed shapes comprised of several sections. The face sections are preferably modified concave surfaces comprised of several triangular sections that can be planar, concave, or convex. The brick is partially or fully encased by a removable wrapper or removable wrapper segments and can further include a skeleton distributed throughout. The skeleton can be a customizable matrix, framework of fiber groups, or other structure and can include customizable buoyant features such as air pockets or capsules.

The present application relates to the field of image processing, in particular to an asphalt pavement damage visual analysis method and system integrating deep learning. It aims to solve the problem of misidentifying the asphalt pavement repair area as a crack in the prior art. An RGB image, a thermal image, a location and an environmental parameter are obtained by a vehicle-mounted device; local asphalt material properties are queried; an anti-interference fusion feature map is generated by fusing the RGB and thermal image features, combining the attention mechanism and the environmental parameter; an enhanced feature map is generated by adjusting the convolution kernel using the material properties through the MAML algorithm; and the damage is identified through the domain adaptive classifier and the adversarial training. The enhanced repair area and crack area differentiation ability reduces the misjudgment caused by environmental and regional material differences, and improves the identification accuracy and robustness.

The present invention discloses an asphalt layered melting method and a melting glue machine, belonging to the technical field of asphalt pretreatment, which includes the following steps: S1. Feeding: feeding sheet asphalt materials into the melting tank from the feed inlet; S2. Stirring: the sheet asphalt contacts the melted asphalt under the push of the stirring paddle, and continuous stirring makes the sheet asphalt and the melted asphalt evenly mixed; S3. Layered heating: the sheet asphalt is heated and melted by a heating element in the melting area of the upper layer of the melting tank, and after melting, the asphalt flows into the strong heating area of the lower layer of the melting tank, and the heating element in the strong heating area rapidly raises the temperature of the asphalt, and evenly heats the asphalt to the set discharge temperature; S4. Discharging: the asphalt is continuously stirred in the strong heating area, and is extruded and discharged by the stirring paddle in the strong heating area. While discharging, sheet asphalt materials are added to the melting tank for supplementation to keep the total amount of asphalt in the melting tank unchanged; S5. Circulation, the asphalt has high and uniform heating efficiency.

The present invention discloses a bio-based compatible stable particle, its preparation method and application, belonging to the technical field of road asphalt material preparation. A bio-based compatible stable particle, the raw materials of which include a thermally triggered bio-based crosslinking agent, a bio-based nanocomposite material, a tackifier, a titanate coupling agent and an antioxidant. The present invention uses a thermally triggered bio-based crosslinking agent and a bio-based nanocomposite material to replace the crosslinking agents such as sulfur and polyphosphoric acid commonly used in the prior art, and prepares them into bio-based compatible stable particles that can be directly put into use, having obvious advantages in material stability and construction convenience. The application of bio-based materials can effectively reduce the emission of harmful gases during the production and application of high-viscosity asphalt, and improve the construction environment. At the same time, the biodegradable characteristics of bio-based materials provide strong support for environmental protection, significantly reducing the long-term pollution risk after the use of materials.

The utility model provides a colored asphalt proportioning device. The colored asphalt proportioning device comprises a mounting seat; the two fixing plates are fixedly installed on the two sides of the top of the installation base correspondingly, and a stirring barrel is fixedly installed in the middle of the top of the installation base. According to the colored asphalt proportioning device provided by the utility model, the floating plate is arranged in the collecting barrel, and the display ring block is sleeved on the outer surface of the collecting barrel, so that the floating plate descends along with the liquid level height of a material along with the discharge of the material in the collecting barrel, and drives the display ring block to move on the surface of a scale value; the device is simple in structure, high in practicability and capable of visually observing the discharging volume of various mixed materials, the mixed materials can be stored in advance through the multiple collecting barrels, repeated manual discharging is not needed, the labor intensity of the operator is relieved, and the working efficiency is improved. The material mixing accuracy is improved, and the practicability of the device is improved.

The invention relates to the technical field of road engineering materials, in particular to a rock asphalt-interfacial activated rubber powder composite modified asphalt material and a preparation method thereof. The rock asphalt-interfacial activated rubber powder composite modified asphalt material is prepared from the following raw materials in percentage by mass: 4 to 6 percent of natural rock asphalt, 15 to 20 percent of rubber powder, 0.1 to 0.2 percent of silane coupling agent, 2 to 5 percent of light aromatic hydrocarbon oil, 0.1 to 3 percent of stabilizer and the balance of matrix asphalt. The material is prepared by co-doping raw material powder into matrix asphalt according to the mass fraction and adopting a step-by-step high-temperature high-shear process, and the composite modified asphalt with good compatibility and network structure stability is formed. The composite modified asphalt has the effects of high-temperature stability, low-temperature flexibility and uniform microstructure.

The invention discloses a lignin flame retardant with toughening and antioxidant functions, flame-retardant elements such as F-GMA, N, P and Si are introduced into a lignin macromolecular structure, the flame-retardant elements are not easy to migrate and seep, the performance of the material is more stable, the dispersity is better, the flame-retardant property of asphalt can be improved by the introduced flame-retardant elements such as N, P and Si, and meanwhile, the flame-retardant property of the asphalt can be improved by the introduced flame-retardant elements such as N, P and Si. The grafted F-GMA enables the lignin to have a toughening function, and meanwhile, the lignin has rich phenolic hydroxyl groups, so that the lignin also has an antioxidant function. When the lignin-based flame retardant is applied to an asphalt material, the flame retardant property of a composite material can be remarkably improved, and an efficient synergistic flame retardant effect is achieved. And the method for preparing the lignin flame retardant is simple, and the process conditions are easy to control.

This invention relates to the field of low-temperature performance characterization technology for asphalt materials, specifically to a method and system for evaluating the impact of physical hardening on the performance of asphalt materials. The method includes the following steps: obtaining the stiffness modulus and stiffness modulus change rate at different isothermal storage times under multiple test temperatures; obtaining stiffness modulus fitting parameters using a four-parameter saturated growth model fitted to the stiffness modulus, and obtaining stiffness modulus change rate fitting parameters using an exponential-logarithmic mixed model fitted to the stiffness modulus change rate; obtaining the physical hardening response rate and physical hardening rate using the stiffness modulus fitting parameters and the stiffness modulus change rate fitting parameters, respectively; obtaining the stiffness modulus critical temperature loss value and relaxation critical temperature loss value based on the stiffness modulus, the stiffness modulus change rate, and the low-temperature temperature loss model; and quantifying the response rate and degree of asphalt materials to physical hardening using multiple quantitative indicators.

The present invention relates to the technical field of material performance detection, and particularly to a microwave performance improvement system based on activated crumb rubber modified asphalt materials. The system includes a microwave irradiation condition design module, a performance detection and heat generation analysis module, a material microscopic influence evaluation module, and a material microwave performance improvement module. It can obtain different microwave irradiation powers and nano-zinc oxide compounding ratios, design microwave irradiation conditions, and detect microwave performance parameters to obtain microwave reflection coefficients, microwave transmission coefficients, and microwave absorption coefficients. By monitoring the microwave heat generation uniformity index in real time, analyzing the microscopic structure characteristics, and evaluating the influence on microwave performance, the corresponding material microscopic performance influence factors can be obtained. The microwave performance evaluation calculation and adaptive optimization adjustment are carried out on the microwave reflection coefficient, microwave transmission coefficient, and microwave absorption coefficient to generate a microwave performance improvement adjustment strategy corresponding to the modified asphalt material. The present invention can improve the microwave performance of the modified asphalt material.

An asphalt concrete product comprising of the following materials: 69.6 grams of bitumen, 734.76 grams of coarse aggregates, 305.21 grams of fine aggregates, 90.43grams of fillers, and 12 grams (1%) to 36 grams (3%) dried cut pieces plastic wastes cooked altogether as asphalting materials conferring to the procedures of making asphalt concrete. The wastes out of plastic and cellophane will replace part of bitumen from 12grams (1%) to 36grams (3%) of the total parts in an asphalt concrete product. The product has the characteristics of significant lesser weight densities ranging from 2.157g / cm3 to 2.280g / cm3 , comparable water absorption rates at percentages from 0.224% to 0.397% and with improved Marshall Stability results from 3,593.64lbs to 3,620.80lbs.

This invention discloses a method and system for testing and evaluating the rheological properties of lead-zinc tailings modified asphalt materials, relating to the field of tailings recycling technology. The method includes: preparing lead-zinc tailings modified asphalt materials according to different mass ratios and conducting short-term aging simulations; performing rheological tests on a comparative sample set at multiple discrete temperature points; obtaining a comprehensive rheological property dataset and determining the high-temperature performance score, low-temperature performance score, and comprehensive synergistic balance coefficient for each mass ratio; conducting a temperature sensitivity comparative analysis on all mass ratios; identifying the recommended lead-zinc tailings mass ratio that achieves the target synergistic performance state; generating a comprehensive evaluation report containing the recommended mass ratio, high-temperature and low-temperature performance scores for each mass ratio, and the temperature sensitivity comparative analysis results. This invention identifies the modified formulation that achieves the optimal synergistic performance at both high and low temperatures and outputs the temperature sensitivity analysis results, providing a data-driven decision-making basis for modified asphalt formulation design and performance optimization.

The utility model discloses a rut testing machine for multi-environment simulation, which relates to the technical field of asphalt material detection and comprises a machine body, a display screen and an operation panel are fixedly connected to the front side of the machine body close to the right side, a cavity is arranged on the left side of the machine body, a groove body is arranged in the cavity, and the groove body is in sliding connection with the bottom of the cavity. The device comprises a groove body, the top of the groove body is fixedly connected with a first air cylinder, the telescopic end of the bottom of the first air cylinder is fixedly connected with a U-shaped fixing plate, and the inner side of the fixing plate is movably connected with a rolling wheel. Meanwhile, environments with different pressures, humidity and temperatures are simulated through components such as a first air cylinder, a spraying pipe and a heating plate, so that track experiments on the asphalt material in different environments are realized.

The invention discloses a lithium ion battery negative electrode material coating device, which belongs to the technical field of lithium battery processing, and comprises a supporting bottom plate, a sealing tank is arranged on the upper surface of the supporting bottom plate, and a plurality of discharge pipes are arranged at the bottom of the side surface of the sealing tank; a coating mechanism for supplying and pressurizing the sealing tank is arranged above the supporting bottom plate; the coating mechanism comprises a stirring assembly used for stirring and dispersing materials in the sealing tank and a material dispersing assembly used for being matched with the stirring assembly to achieve the intermittent pressurizing effect on the sealing tank and achieving the spraying effect on the materials. The material dispersing assembly is arranged at the top of the stirring assembly. Through the mutual cooperation of multiple structures, the asphalt material is sprayed and fed, the asphalt material is fully dispersed through spraying, the sealing tank is intermittently pressurized in the feeding process, and the asphalt material is fully adsorbed by the graphite material through the pores of the graphite material through pressurization.

The invention provides a hard carbon composite material, a preparation method thereof, a negative electrode containing the hard carbon composite material, and a lithium ion battery containing the negative electrode. The preparation method comprises the following steps: 1) crushing an asphalt material to obtain a crushed material; 2) in a dry environment, the crushed material obtained in the step 1) and mesoporous silica are ground to obtain a composite material precursor, and the use amount of the mesoporous silica is 1-8 wt% relative to the total weight of the asphalt material; and 3) calcining the composite material precursor at the temperature of 900-1100 DEG C in an inert atmosphere, and then cooling along with a furnace. When the hard carbon composite material is used as a negative electrode of a secondary battery, the ion transmission rate can be increased, and the charging and discharging speed can be increased.

The invention relates to the technical field of bridge engineering maintenance, and discloses a concrete bridge deck asphalt detection device, which comprises a main body frame, a stirring mechanism is mounted in the main body frame, the stirring mechanism comprises a storage tank, the storage tank is fixedly connected to the inner side of the main body frame, and a heating device is mounted on the outer side of the storage tank. A motor is installed on the outer side of the main body frame, the output end of the motor is fixedly connected with a transmission rod, the outer side of the transmission rod is fixedly connected with a plurality of turning hoppers and stirring blades, the turning hoppers and the stirring blades are all located in the storage tank, and a visual detection device is installed on the inner side of the main body frame. Through cooperation of the double-layer heat insulation storage tank and the heating device with precise temperature control and cooperative operation of the spiral turning hopper and the stirring blades, the asphalt material can always keep uniform temperature distribution and good fluidity in the storage process, solidification is avoided, a reliable guarantee is provided for follow-up repair work, and the quality and efficiency of material pretreatment are effectively improved.