122 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 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 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 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.

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.

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 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 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.

The application provides a collection system and method of gaseous volatile components in asphalt. The temperature-controllable asphalt emission detection and collection system developed by the application can realize sampling of gaseous volatile components in the whole life cycle of typical asphalt materials, and simultaneously uses a gas detector to detect and analyze TVOC, SO2, CO and other gaseous inorganic pollutants, thereby enhancing the completeness of asphalt emission detection. Based on the scheme, the sample can be quickly collected for subsequent analysis and use, and the application has small occupied area and is convenient to maintain.

The invention discloses a regenerated SMA-13 asphalt mixture with high RAP doping amount and a processing method of the regenerated SMA-13 asphalt mixture, and belongs to the technical field of asphalt materials. The regenerated SMA-13 asphalt mixture with the high RAP doping amount comprises the following raw materials in parts by weight: 5-15 parts of small-particle-size RAP; the preparation method comprises the following steps: preparing the following components in parts by weight: 35-50 parts of RAP with large particle size, 40-60 parts of basalt with particle size of 0-15mm, 5-10 parts of mineral powder and 0.2-0.5 part of lignocellulose; the regenerated SMA-13 asphalt mixture with the high RAP doping amount comprises new asphalt which accounts for 4 to 6 percent of the regenerated SMA-13 asphalt mixture with the high RAP doping amount; the small-particle-size RAP is RAP with the particle size smaller than 3 mm, and the large-particle-size RAP is RAP with the particle size of 5-10 mm or RAP with the particle size of 10-15 mm. According to the regenerated SMA-13 asphalt mixture with the high RAP mixing amount, a regenerant is not used, the RAP mixing amount is high, and the obtained regenerated SMA-13 asphalt mixture is superior to the standard requirement.

The present application belongs to the technical field of road engineering material testing, and particularly relates to a determination method for judging asphalt similarity based on a rheological curve, which adopts a dynamic shear rheometer to perform frequency scanning at multiple temperature points, and constructs a complex modulus master curve or a phase angle master curve based on the time-temperature equivalence principle. Through calculation of the overlapping degree of the confidence intervals of the difference factor F1, the similarity factor F2 and the WLF temperature sensitivity parameters, quantitative evaluation of the viscoelastic behavior of asphalt materials in the full temperature domain and the full frequency domain is realized. The present application first proposes a double-track determination framework, which can simultaneously reflect the differences in the master curve form and the temperature response characteristics, and supports comparison of multiple states such as unaged, RTFOT aged, PAV aged through a multi-condition batch processing mechanism. The method has high detection efficiency and strong repeatability, and is suitable for engineering application scenarios such as asphalt production quality control, road construction acceptance and oil source compatibility evaluation.

The invention discloses mixing equipment for fog seal material preparation and a using method thereof, and relates to the technical field of asphalt material mixing, the mixing equipment comprises a mounting plate, a connecting unit is arranged on one side of the top of the mounting plate, a mixing unit is arranged on the other side of the top of the mounting plate, and a mixing mechanism is arranged at the front end of the top of the mounting plate. A material spraying unit is arranged in front of the material mixing mechanism, and the material spraying unit and the mounting plate are in threaded connection with an external moving trolley through bolts. The mounting plate is arranged to support the connecting unit, the mixing unit and the mixing mechanism, the connecting unit can be used for limiting a charging barrel of an emulsified asphalt material and is matched with the mixing unit to convey the material, the mixing unit is arranged to mix a demulsifier required by spraying, and wear-resistant materials such as carborundum are added in a linkage manner, so that the spraying efficiency is improved, and the spraying quality is improved. Wherein the materials can be selected regardless of the requirement for uniform viscosity of the emulsified asphalt material, so that the requirements for wear resistance and skid resistance of the pavement are better met.

The invention relates to the field of lithium battery coated asphalt materials, and discloses coated asphalt as well as a preparation method and application thereof. The method comprises the following steps: (1) carrying out refining treatment on catalytic cracking oil slurry to obtain a refined effluent; carrying out reduced pressure distillation treatment on the refined effluent under the conditions of 310-340 DEG C and 3-7 kPa to obtain a heavy component I with an initial boiling point of 450 DEG C or above; the refining treatment conditions are controlled, so that the sulfur content in the refining effluent is less than 0.5 wt%, and the nitrogen content in the refining effluent is less than 0.5 wt%; (2) performing oxidation treatment on the heavy component I under the conditions of 280-360 DEG C and first air flow to obtain an oxidized substance; and (3) carrying out gas stripping devolatilization treatment on the oxidized substance at 280-360 DEG C under a second air flow condition to obtain the coated asphalt, the second air flow is 0.4-1.9 m < 3 > / h higher than the first air flow per 1 kg of the heavy component I. The oil slurry-based coated asphalt prepared by the method has the advantages of high softening point, low quinoline insoluble content and the like.

The utility model relates to the field of waste recovery, and discloses a waste asphalt material feeding device which comprises a supporting frame, a conveying belt is arranged at the top end of the supporting frame, a vibrating and leaking device is arranged on the right side of the supporting frame and comprises a connecting box, and a connecting block is fixedly connected to the upper end of the connecting box. A scraping plate assembly is further arranged on the inner side wall of the left side of the connecting box, the scraping plate assembly comprises an inserting block, the inserting block is elastically connected into the cavity of the connecting box through a spring, a mounting groove is formed in the side wall of the connecting box, and a scraping plate is inserted into the inner wall of the mounting groove. According to the asphalt conveying device, residual asphalt adhered to the conveying belt can be scraped and cleaned by arranging the scraper assembly, the conveying belt is kept smooth, the blocking risk caused by asphalt adhesion is reduced, the scraper can be quickly disassembled and assembled by drawing the insertion block, and a professional tool is not needed. And a worker can conveniently clean and maintain the scraping plate.

The application relates to the technical field of measurement and monitoring of road engineering variables, and a bituminous pavement paving quality management system, which comprises a data acquisition module configured to acquire real-time meteorological data, mixture temperature parameters and pavement quality monitoring data; a viscosity analysis module configured to determine a dynamic viscosity adjustment range of bituminous material based on the real-time meteorological data and the mixture temperature parameters; a temperature control module configured to regulate and control mixing temperature according to bituminous material viscosity change and generate a target paving temperature curve; and a power optimization module configured to match a dynamic adjustment strategy of a paving machine screed heating power based on the target paving temperature curve. Through the system, meteorological and construction data are monitored in real time, bituminous viscosity, screed power and other parameters are dynamically regulated and controlled, closed-loop optimization is realized, paving quality is improved, and intelligent construction is realized.

The utility model relates to the technical field of filling device, concretely is adjustable road surface pit filling device, the utility model discloses a vehicle body, one end of vehicle body is provided with the rotary shaft that helps bearing rotary connection, the both ends fixed connection of rotary shaft have the wheel, the upper end fixed connection of vehicle body has liquefied tank and feed hopper, feed hopper penetrates vehicle body, the lower end fixed connection of vehicle body has the flame -spouting head, the fixed connection of flame -spouting head and liquefied tank has the trachea, by setting the adjusting assembly, when adjusting feed hopper discharge rate, the worker pushes vehicle body, through transmission mechanism, makes drive rod rotate, makes the regulation leaf rotate to the bituminous material in feed hopper is discharged, when the worker pushes vehicle body to be fast, through transmission mechanism, make drive rod rotate fast, make the regulation leaf rotate fast, the bituminous material in feed hopper is discharged fast, and further reach the effect of adjusting feed hopper discharge rate as far as possible.

The invention belongs to the technical field of asphalt aging experiments, and particularly relates to an asphalt material multi-factor environmental aging simulation test system which comprises an experiment box, a sealing hinged door is arranged at the end of the experiment box, a temperature control system and a gas control system which are communicated with the interior of the experiment box are arranged on the outer side of the experiment box, and a motor is arranged in the experiment box. The driving end of the motor is connected with a sample placing table, and the using method of the asphalt material multi-factor environmental aging simulation test system comprises the steps of preparing a sample to be tested and the system, presetting parameters, initializing the system, establishing a simulation environment, and carrying out light aging simulation and spraying simulation. According to the invention, the optical chamber forms an independent chamber in the test box through the quartz filter window, the optical chamber is isolated from other areas of the test box, and meanwhile, the heat energy of a traditional abandoned light source can be converted into useful auxiliary energy, so that the operation energy consumption of the system is directly reduced, and accurate temperature control can be carried out under the multi-factor coupling effect in the test process.

1. The name of the design product: asphalt product warehouse. 2. The use of the design product: for storage of road material asphalt. 3. The design points of the design product: in shape. 4. The picture or photo that best shows the design points: perspective view 1.

The present invention discloses a crack asphalt repair cart, which relates to the technical field of pavement maintenance devices. The cart includes a frame with movable wheels, a material storage tank, and a filling mechanism. The filling mechanism is located on the lower side of the frame and includes an arc frame, a discharge assembly, and a ball guide assembly. The arc frame has two cross seats, and the bottom of the arc frame has support balls. The arc frame is also connected to the frame via a connecting rod. The discharge assembly includes a guide pipe and multiple discharge pipes. A rotating motor is mounted on another cross seat, and the ball guide assembly is located at the output end of the rotating motor. The ball guide assembly includes multiple support arms, each with a freely rotatable guide ball mounted at the end. Each discharge pipe is connected to a corresponding support arm. The present invention has a simple structure, ensures that asphalt material is consistently injected into cracks during movement, avoids waste of asphalt material, is easy to operate, and is highly practical.

The invention discloses a coated asphalt surface modification treatment method, which comprises the following steps: preparing a surface pretreatment agent, pretreating the surface of matrix asphalt, preparing a functional coating layer material, coating a coating layer, testing the performance and the like, and forming a chemical bonding transition layer by using a silane coupling agent. And in combination with the functional coating layer of the nano silicon dioxide and the polyurethane elastomer, the chemical corrosion resistance, the aging resistance and the wear resistance of the asphalt are remarkably improved. According to the invention, the construction process can be simplified, the energy consumption and the cost are reduced, the requirements of modern coal chemical production on high-performance asphalt materials are met, and an economical and efficient solution is provided for the application of corrosion prevention, sealing, heat insulation and the like of equipment in the coal chemical industry.

The present application belongs to the technical field of road material, and particularly relates to a preparation method and evaluation method of a test piece for testing the blocking performance of heavy metal elements in waste fly ash, wherein the preparation method comprises the following steps: mixing different amounts of waste fly ash material with asphalt material respectively, obtaining waste fly ash-asphalt mortar with different doping amounts through 7 steps, and finally obtaining the final test piece. The present application has the following advantages: 1. The present application prepares asphalt mortar pieces with different doping amounts, and then assembles and combines them, so as to analyze the sedimentation trend of waste fly ash in the test piece, and further analyze the blocking effect of the asphalt material. 2. The evaluation test of the present application can avoid the randomness of data, and accurately obtain the heavy metal element penetration under different layer quality tests and different working conditions, so as to objectively evaluate the blocking effect of the asphalt material on the waste fly ash.