41 results about "Pavement engineering" patented technology

The invention discloses a graphene asphalt modifier based on a micelle coating technology and a preparation method thereof, and belongs to the technical field of road materials. The modifier is prepared from reduced graphene oxide (rGO) serving as a core function phase, a micelle coating phase (compounded by polystyrene-polyoxyethylene block copolymer and ionic liquid) and an auxiliary modification phase (nano silicon dioxide and a silane coupling agent) according to the mass ratio of 10: (30-50): (5-10). The preparation method comprises the following steps: preparation and reduction of graphene oxide, preparation of an amphiphilic micelle solution, preparation of micelle-coated rGO composite particles and compounding of an auxiliary modified phase. The modifier can significantly improve the dispersibility and compatibility of graphene in asphalt, effectively prevent agglomeration, and synchronously improve the high and low temperature performance, aging resistance, water damage resistance and self-ice-melting performance of asphalt. The process is simple and convenient, is compatible with an existing asphalt production line, and is suitable for high-grade pavement engineering.

The invention discloses a pavement load analysis method based on discrete elements and a related device, and the method comprises the steps: collecting geometric features and material parameters of an asphalt pavement, and constructing a discrete element model; based on the constructed discrete element model, creating a rigid load plate in the target area, and simulating a tire-road contact surface; a target load is applied through a rigid load plate, displacement field distribution under the action of the load is calculated based on a discrete element model subjected to the load, and settlement response analysis is achieved. The discrete element model of the asphalt pavement is established on a physical scale closer to reality, and interlayer and particle contact conditions are flexibly defined through fine unit division; on the premise of reducing the cost, the transmission path and the distribution characteristic of the dynamic load in an actual pavement structure and the complex internal mechanical response caused by the transmission path and the distribution characteristic can be more accurately captured, and powerful support is provided for comprehensive improvement of scientificity, reliability and precision of pavement engineering design and accurate prediction of pavement diseases.

The invention discloses a coring manipulator for pavement engineering testing, and relates to the technical field of pavement engineering testing, the coring manipulator comprises a cart and a drilling cutter, a support frame is vertically and slidably connected with a moving block, the support frame is rotatably connected with a first lead screw, and the first lead screw is in threaded connection with a rotating cylinder; the side wall of the rotating cylinder is fixedly connected with a first bevel gear and a second bevel gear, the two sides of the first bevel gear are engaged with third bevel gears, the third bevel gears are fixedly connected with second lead screws, the second lead screws are in threaded connection with spiral sleeves, the spiral sleeves are fixedly connected with limiting blocks, and limiting blocks are slidably connected into the moving blocks. The support frame is fixedly connected with a trigger block; the two sides of the cart are slidably connected with first sliding rods, the first sliding rods are in threaded connection with third lead screws, the second bevel gears are meshed with fourth bevel gears, the first sliding rods are slidably connected with second sliding rods, and the second sliding rods are connected with first clamping blocks. The device has the effect of improving the working efficiency and the road core surface quality.

The invention relates to the technical field of intelligent sensing systems, and discloses a method and a device for detecting the bearing capacity of a pavement engineering construction material, and the method comprises the steps: synchronously collecting a mixed signal and a pure noise signal through a main measurement sensor and a reference noise sensor, constructing a multi-dimensional observation matrix, and carrying out the centralization and whitening preprocessing, thereby obtaining the bearing capacity of the pavement engineering construction material. And blind source separation is carried out by adopting an independent component analysis algorithm based on maximized non-Gaussian property, a target bearing capacity response signal with a super Gaussian characteristic is identified according to a kurtosis value of each source signal component, and then a dynamic deformation modulus is calculated. The system comprises a sensor array module, a synchronous acquisition module, a data processing module based on FPGA hardware acceleration and a result output storage module. According to the invention, strong coherent vibration noise can be effectively suppressed, signal details are completely reserved, and high-precision and real-time bearing capacity detection is realized.

The embodiment of the utility model provides a novel abrader, which relates to the field of airport cement pavement engineering, and comprises a mounting platform, a driving mechanism and a walking wheel group, the mounting platform is used for supporting and positioning a to-be-tested concrete roadbed; the driving mechanism is fixed on the mounting platform; the walking wheel set comprises a mounting frame and a plurality of directional rubber wheels, the mounting frame is connected with the driving mechanism, and the directional rubber wheels are all fixed to the mounting frame and distributed around the preset axis at intervals. The extension line of the wheel shaft of each directional rubber wheel is vertically intersected with a preset axis; and the driving mechanism is used for driving the mounting frame and the directional rubber wheels to rotate around a preset axis. According to the design of the wear meter, the test process can better conform to the real service condition of airport concrete, so that the accuracy and the reliability of a test result are improved.

The application discloses a kind of anti-cracking performance evaluation method and computer equipment for asphalt stress absorbing layer, it is related to pavement engineering technical field, the method includes: stress absorbing layer test piece is carried out oblique shear test, and index information in the process of oblique shear test is collected, the index information includes shear angle, stress load, vertical displacement, lateral displacement, interlayer dislocation displacement and stress absorbing layer adhesion force;According to the index information, the interlayer adhesion coefficient and interlayer stress absorbing coefficient of the stress absorbing layer test piece are calculated;According to the interlayer adhesion coefficient and interlayer stress absorbing coefficient, the anti-cracking performance of the stress absorbing layer test piece is evaluated.The application can introduce the interlayer adhesion coefficient and interlayer stress absorbing coefficient of stress absorbing layer test piece, and accurately evaluate the anti-cracking performance of asphalt stress absorbing layer.

This invention provides a photocatalytically modified asphalt based on waste rubber powder and its preparation method. The modified asphalt achieves this by precisely controlling the ratio of waste rubber powder, matrix asphalt, and a smoke suppressant made of graphite-phase carbon nitride. Simultaneously, a segmented gradient temperature-controlled calcination process is employed to prepare graphite-phase carbon nitride with a specific band gap. This ensures good interfacial compatibility among the raw material components, stable system formulation, and uniform and controllable precursor pyrolysis and polymerization reactions. Consequently, the graphite-phase carbon nitride possesses both porous physical adsorption and visible light photocatalytic activity. This allows for efficient adsorption and long-lasting photocatalytic degradation of asphalt fumes while fully preserving the excellent road performance and workability of the waste rubber powder-modified asphalt. The final product is a photocatalytically modified asphalt with simple components, controllable cost, excellent compatibility, long-lasting and stable smoke suppression effect, good process repeatability, and suitability for industrial mass production and widespread application in highway pavement engineering.

The invention relates to an AI (artificial intelligence)-based quick highway inspection method and system. The system comprises a mobile device, a camera and a controller, wherein the camera and the controller are arranged on the mobile device; a controller for controlling the mobile device to travel along a target road; the controller is also used for controlling the mobile equipment to carry out civil engineering inspection and greening engineering inspection; civil engineering inspection includes pavement engineering inspection, traffic safety engineering inspection, roadbed engineering inspection, drainage engineering inspection and protection engineering inspection. The controller can control the mobile device to carry out civil engineering inspection and greening engineering inspection. And for the inspection digital image of each inspection project, using artificial intelligence (AI) identification software and machine learning algorithm software of engineering diseases to determine the disease type and area in each inspection project. The inspection efficiency is obviously improved, the inspection accuracy is improved, and the inspection cost is reduced.

The invention relates to the technical field of pavement engineering, and discloses an asphalt pavement crack repairing and milling machine. Comprising a vehicle body and a dust cover installed at the front end of the vehicle body, and a first storage box, a second storage box, a third storage box, a stirring box and an air blowing device are further arranged in the vehicle body. A milling cylinder is mounted in the dust cover; and a first conveying belt and a second conveying belt are further arranged behind the milling cylinder. A first discharging port and a second discharging port are formed in the bottom of the vehicle body, and the first discharging port is located in front of the second discharging port. The width of the first discharge port and the width of the second discharge port are the same as the width of the milling cylinder. A first air suction port is further formed in the vehicle body in the dustproof cover, the rear portion of the first air suction port is communicated with a second storage box, and a second air suction port is formed in one side of the second conveying belt and connected with the second storage box. The stirring box is communicated with the first storage box, and the second storage box is connected with the second discharge port. A blowing opening is further formed in one side of the second conveying belt. And the stirring box is communicated with the first storage box and the third storage box. The construction process of highway pavement milling and asphalt filling can be completed, old highway materials can be effectively recycled, the old highway materials and new asphalt materials are mixed to achieve regeneration of the old highway materials, the material utilization rate is increased, and pollution and old highway material loss caused by flying dust in the cutting process are reduced.

The invention belongs to the technical field of pavement engineering materials, and particularly relates to a rubber and plastic composite material preparation process and manufacturing equipment thereof, and the rubber and plastic composite material preparation process comprises the following specific steps: S10, raw material pretreatment: S11, preparation of various raw materials; s12, regenerated plastic treatment: crushing polyethylene regenerated plastic and polypropylene regenerated plastic to 80-100 meshes, putting into an alkali washing tank, soaking with a sodium hydroxide solution to remove surface oil stains and impurities, then washing with clear water to be neutral, and feeding into a drying cylinder; s13, rubber treatment: freezing and crushing butadiene styrene rubber to 50-80 meshes, and adding nano calcium carbonate and an ethylene-vinyl acetate copolymer for premixing; and S14, preparing rubber oil: heating naphthenic rubber oil for later use, and by arranging a middle-section mixing convex edge in the segmented cooling extrusion unit, the regenerated rubber and plastic material interface bonding force is enhanced, and the mechanical property uniformity is improved.

The invention discloses an environment-friendly modified waste refractory material high-performance asphalt mixture as well as a preparation method and application thereof. The mixture is obtained by heating and mixing asphalt, coarse and fine aggregate and a cyclodextrin-fluorosilane double modified waste refractory material. The cyclodextrin-fluorosilane dual-modified waste refractory material is prepared by a three-step method: firstly carrying out amino silanization on the waste refractory material by using (3-aminopropyl) triethoxy silane, then carrying out grafting reaction with gamma-cyclodextrin / epoxy chloropropane, and finally, carrying out end capping by using trifluoropropyl methyl triethoxy silane, so as to obtain the cyclodextrin-fluorosilane dual-modified waste refractory material. And forming a material with a gradient structure of an inner core inorganic framework, a middle cyclodextrin layer and an outer layer fluoroalkyl shell. The use of traditional mineral powder is reduced, and meanwhile, the high-temperature stability, the water immersion stability and the safety of the asphalt mixture are improved. The method is suitable for pavement engineering of expressways and humid and rainy areas, and unification of solid waste high-value utilization and ecological environmental protection is achieved.

The invention provides a step planing and milling device for pavement engineering and a planing and milling machine, belongs to the field of pavement planing and milling, and aims to solve the problems that a planing and milling machine cannot carry out side surface step planing and milling at a joint of a new road and an old road, so that the joint is poor in bonding quality and easy to damage. Comprising a mounting base, a transverse adjusting unit, a swinging execution unit, a lateral planing and milling head and a spraying unit, through cooperative cooperation of the transverse adjusting unit and the swing executing unit, the position and angle of the lateral milling head in the horizontal direction (transverse direction) and the vertical direction (depth) can be accurately controlled, so that the lateral milling head can stably and regularly mill a step structure on the side face of an old road, and the problems that a traditional milling machine can only mill a whole plane, and the milling efficiency is low are solved. And high-quality joint treatment cannot be completed under special working conditions such as half-range passing and connection of new and old roads.

The invention discloses a stress luminescence type chemical anchoring fog sealing layer material with blackening and wear-resisting functions and a construction method of the stress luminescence type chemical anchoring fog sealing layer material, and relates to the technical field of pavement engineering pre-maintenance. According to the fog seal material disclosed by the invention, near-neutral nonionic emulsified asphalt is taken as a stable reaction matrix, blackening and network enhancement of an asphalt pavement are realized by introducing activated latex slurry with high carbon black content, and interface bonding and mechanical-optical response triggered by a traffic load are realized by virtue of stress luminescent particles with a core-shell structure; and an interface chemical anchoring reaction is triggered during demulsification through the interface catalysis type anti-skid aggregate. All the components play a synergistic effect in the storage, construction and service stages, a reinforced seal coat with stress luminescence visual guidance, high blackness, high skid resistance and long-acting durability functions is finally formed on the pavement, and the reinforced seal coat is particularly suitable for improving the road traffic safety in dark light environments such as tunnels and road sections without street lamps.

The invention discloses a pavement engineering construction data processing and construction quality control method and system, and belongs to the technical field of pavement engineering construction. The method comprises the following steps: collecting multi-source construction data in real time through sensors arranged on materials, equipment and a site; predicting a future trend value of each quality influence factor by using a gray model; determining the comprehensive weight of each factor by adopting an analytic hierarchy process; the correlation degree between the factors is calculated through a grey correlation analysis method; constructing a multi-level grey comprehensive evaluation system based on the predicted value, the weight and the correlation degree; according to the prediction result, generating a plurality of construction parameter combination schemes in a preset step length to form a candidate scheme set; sorting the candidate schemes by adopting the comprehensive evaluation system, and selecting an optimal construction scheme; and finally, the parameters of the optimal scheme are issued to corresponding construction equipment through a control interface, the equipment operation parameters are dynamically adjusted, and real-time closed-loop control over the construction quality is achieved. According to the invention, accurate, dynamic and intelligent control of the construction process is realized.

The invention belongs to the technical field of airport pavement engineering material testing, particularly relates to an airport asphalt pavement cold patch material stability testing device and method based on an improved Hubbar-Field method, and aims to solve the problems that in the testing process, the size of a test piece is large, the test piece is often unstable and prone to collapse after being demolded, and consequently the testing result is inaccurate, and in addition, the test piece is prone to collapse. In the prior art, the initial stability, the plastic flowability and the maintenance period performance evolution of a cold-mixed repairing asphalt mixture are difficult to accurately reflect, and the requirements of high safety and rapid traffic opening of an airfield pavement repairing material in an actual use scene cannot be met, the following scheme is proposed, and the scheme comprises a bottom plate. The airport asphalt pavement cold patch material stability testing device and method based on the improved Hubbar-Field method disclosed by the invention have the beneficial effects that the problem that the cold patch material is easy to collapse during demolding is effectively solved, the reliability of test data and the applicability and accuracy of the test are improved, and a scientific basis is provided for material design and construction.

The application discloses a paving device for expressway construction and belongs to the technical field of pavement engineering machinery, which comprises a suspension frame, a material distributing assembly, a rammer driving assembly and a paving vehicle, the suspension frame is arranged at the rear side of the paving vehicle, the material distributing assembly is arranged between the paving vehicle and the suspension frame, and the rammer driving assembly is arranged in the suspension frame. The hydraulic device on the suspension frame pushes the lengthened box to stretch out or retract along the hanging plate sliding groove, so that the paving width can be continuously adjusted, and the shutdown and disassembly process is eliminated; the driving motor of the material distributing assembly is connected with the main material distributing auger and the auxiliary material distributing auger through a polygonal transmission shaft, the gear bearing slides in the chain box to maintain the continuous rotation of the auxiliary material distributing auger, and material accumulation and segregation are avoided; the rammer motor of the rammer driving assembly drives the main rammer plate and the auxiliary rammer plate to be synchronously rammed through a polygonal transmission short shaft, the overlapping ramming of the joint areas is improved, the compactness is improved, and the longitudinal weak joint belt is eliminated by overlapping ironing through the ironing device.

The invention discloses an SBS modified asphalt mixture and a preparation method thereof. The mixture is prepared by mixing a composite aggregate system and SBS modified asphalt according to an asphalt-aggregate ratio of 4.5-5.5%, the SBS modified asphalt is prepared by swelling base asphalt, 4 to 5 weight percent of linear SBS, 0.3 to 0.4 weight percent of BPO, 0.2 to 0.3 weight percent of BPA and 2 weight percent of environment-friendly aromatic oil at the temperature of 45 DEG C for 150 minutes. The problems that existing SBS modified asphalt is slow in swelling, weak in interface adhesion and poor in skeleton stability are solved, the swelling efficiency is improved by 40%, the interface adhesion work reaches 305 mJ / m < 2 > or above, the anti-rutting coefficient is improved by 50%, and the SBS modified asphalt is suitable for high-grade highway pavement engineering.

The application discloses a kind of asphalt concrete pavement construction management system and method, it is related to road construction technical field, the application first divides temperature, thickness, compactness and proportioning as each key parameter according to parameter type, divides two kinds of ways of continuous and batch, each key parameter is collected by distributed equipment, then parameter-quality dynamic evaluation model and abnormal parameter influence degree evaluation model are constructed, calculate quality comprehensive index, identify potential defects and associated factors, then combine real-time parameter and quality evaluation result, filter the construction link and parameter needing optimization, finally optimize process, integrate regional information, realize collaborative control and generate construction archives.The scheme significantly improves the uniformity, durability and efficiency of asphalt pavement construction through real-time monitoring, intelligent analysis and closed-loop control, reduces the maintenance cost in later period, and is suitable for high-grade pavement engineering of expressway and municipal road.

The application provides high softening point temperature asphalt and a preparation method thereof, and belongs to the technical field of asphalt materials. Components of the application include asphalt, star-shaped SBS, LDPE, MAH-g-LDPE, fatty acid-PEG ester / silicon dioxide composite and sulfur stabilizer. The application has the advantages that performance is greatly improved through the synergistic effect of multiple components. Star-shaped SBS and LDPE construct a solid polymer network, MAH-g-LDPE acts as a compatibilizer to ensure system stability, and the innovative fatty acid-PEG / silicon dioxide composite has phase change endothermic and nano-enhancing functions, and intelligently delays temperature rise. The network stability is further enhanced by sulfur crosslinking, and the finally obtained asphalt has extremely high softening point, excellent high-temperature stability, durability and comprehensive road performance, and is suitable for high-end road engineering in harsh environments.

The utility model relates to the technical field of road surface drainage, and discloses a municipal engineering road surface drainage structure which comprises a municipal road surface base layer, a baffle is fixedly connected to the interior of the municipal road surface base layer, a plurality of water leakage holes are formed in the top of the baffle, and mounting grooves are formed in the two sides of the inner wall of each water leakage hole. And limiting assemblies are arranged on the two sides of the inner walls of the two mounting grooves correspondingly, sliding rods are fixedly connected to the bottoms of the inner walls of the two mounting grooves correspondingly, and a downward moving assembly is arranged between the outer surfaces of the two sliding rods. Through cooperative use of the water leakage hole, the mounting groove, the limiting assembly, the sliding rod, the downward moving assembly, the plugging block, the rebound assembly, the connecting rod and other structures, the water leakage hole can be completely opened when the water amount is large, so that the water drainage speed is increased, rainwater can flow away in time, accumulated water is prevented from being formed on a road surface, and normal construction of municipal road surface engineering is guaranteed.

The utility model belongs to the field of airport pavement engineering, in particular to an assembly type airport pavement panel, which is used for being spliced with another adjacent airport pavement panel, and comprises a rectangular concrete panel and an embedded pipe arranged in the concrete panel, the concrete panel is provided with four side surfaces, an embedded pipe is arranged on each side face of the concrete face plate, dowel bars are inserted into the embedded pipes on at least two adjacent side faces of the concrete face plate, grouting openings are formed in the tops of the embedded pipes, and the embedded pipes are used for pushing the dowel bars in the embedded pipes into the other embedded pipe of the adjacent airport pavement face plate by grouting the grouting openings. According to the airport pavement panel disclosed by the utility model, the dowel bar is arranged between two adjacent airport pavement panels in a spanning manner, so that the connection between the airport pavement panels is enhanced, and the technical requirements of civil aviation airport pavements are met.

The invention relates to the technical field of pavement engineering detection, in particular to a nondestructive joint detection device and method for permeability and compactness of an asphalt pavement, and solves the technical problem of low detection precision in the prior art. The device comprises a data acquisition unit used for acquiring detection data of a target detection point; the detection data comprises ultrasonic data of the target detection point before water spraying, and ground penetrating radar data, infrared thermal imaging data and ultrasonic data of the target detection point after water spraying; the permeability analysis unit is used for performing permeability inversion analysis based on longitudinal wave propagation data in the infrared thermal imaging data after water spraying and the ultrasonic data before and after water spraying to obtain a permeability coefficient of the target detection point; and the compaction degree analysis unit is used for carrying out compaction degree inversion by combining the permeability coefficient of the target detection point based on the ground penetrating radar data after water spraying and the ultrasonic data after water spraying to obtain the compaction degree of the target detection point.

The utility model provides a high-temperature anti-rutting deformation performance testing mechanism which comprises a testing device, an environment temperature and humidity control device, a loading speed and load control device and a data acquisition and analysis device, and the testing device is used for acquiring anti-rutting deformation performance data of an asphalt test piece; the environment temperature and humidity control device is used for adjusting the temperature and humidity of the surrounding environment of the asphalt test piece, and the loading speed and load control device is used for applying continuous load to the asphalt test piece so as to simulate performance tests under different traffic load conditions; the data acquisition and analysis device is used for acquiring, processing and analyzing the anti-rutting deformation performance data so as to evaluate the high-temperature stability of the asphalt test piece. The high-temperature anti-rutting deformation performance testing mechanism realizes comprehensive evaluation of the anti-rutting deformation performance of the asphalt test piece under a high-temperature condition, and has important significance for improving the engineering quality of a pavement prepared from the asphalt test piece.

The invention discloses a power supply loop monitoring method and system, pavement engineering machinery and electronic equipment, and relates to the technical field of power supply loop detection. The method is applied to each power supply loop formed by connecting a channel unit with a whole vehicle power supply and a corresponding load element, and comprises the following steps: acquiring current flowing through the channel unit as target current, and then determining the state of the channel unit according to the target current and the relationship between the target current and a preset current limiting value corresponding to the channel unit, and finally, according to the state of the channel unit, the on-off of the power supply loop is controlled. Therefore, the problem that the working efficiency and the use cost of equipment are affected due to the fact that short-circuit protection is carried out on the power supply loop of the pavement engineering machinery through the fuse (fuse) is solved. The power supply loop state monitoring and fault self-diagnosis based on logic control are realized, and the rapid processing of the power supply loop state is also realized, so that the fault processing efficiency is improved, and components in the power supply loop are protected.

The invention provides a pavement condition index prediction method, system and device and a storage medium, and belongs to the field of pavement engineering management, and the method comprises the steps: collecting the multi-time-sequence PCI data of a target area; an improved Transform model of a multi-layer encoder + modified position encoding + multi-head self-attention architecture is constructed, and multi-time-sequence PCI data is processed to obtain PCI prediction data. And training the model by adopting an Adam optimizer and an anti-overfitting mechanism. The method is suitable for PCI prediction of road sections in different areas and different service states, the problems that a traditional method is insufficient in long-time-sequence dependence capture, low in nonlinear fitting precision and poor in complex environment adaptability are solved, and a high-precision prediction effect is obtained.

The invention discloses an asphalt pavement 3D intelligent paving construction method based on a BIM technology. The asphalt pavement 3D intelligent paving construction method comprises the steps that multiple types of construction related data are acquired to construct a 3D construction model; performing simulation construction on the 3D construction model to obtain multi-stage accumulative error data, and generating an error solution; adjusting based on the error solution to obtain an actual construction operation scheme; constructing conversion middleware to solve a data format barrier; converting the actual construction operation scheme and then controlling the paver to construct; and marking an abnormal area through AR data acquisition and design elevation comparison. According to the method, accurate sensing of the construction environment is achieved through multi-source data fusion, active prevention of quality defects is achieved through error full-process management and control, a construction closed loop is constructed through AR real-time detection, the method has remarkable advantages in the aspects of precision, efficiency and cost, and the method is suitable for high-quality construction requirements of modern complex pavement engineering.

This invention relates to the field of pavement engineering technology and discloses an ultra-thin high-performance fiber-reinforced concrete pavement overlay and its construction method. The pavement includes an existing base course and a high-performance fiber-reinforced concrete overlay laid on top of the base course. The overlay is constructed from C100 high-performance fiber-reinforced concrete, with a 28-day compressive strength of not less than 100 MPa and a flexural tensile strength of not less than 6 MPa. This invention achieves a balance between ultra-thinness and high performance in the overlay by optimizing the mix proportions of the high-performance fiber-reinforced concrete and rationally selecting fiber parameters. This significantly reduces the self-weight and material consumption of the overlay, shortening the construction cycle. Furthermore, it possesses excellent mechanical properties, crack resistance, and wear resistance, making it suitable for old pavement reconstruction, heavy-duty pavement overlay, airport runway overlay, urban road upgrades, and special pavement projects with limitations on pavement thickness, showing broad application prospects.

The utility model discloses a mudstone doped lime fill roadbed structure, which belongs to the technical field of pavement engineering and comprises a roadbed base layer, a roadbed structure laid on the roadbed base layer, a pavement structure layer arranged on the roadbed structure and protection slopes arranged on two sides of the roadbed structure. The roadbed structure comprises a waterproof cushion layer, a drainage layer, a mudstone and lime mixed embankment layer, a geotechnical cloth layer and a fiber soil layer which are sequentially laid from bottom to top. The drainage supporting structure is of a transversely and longitudinally staggered concrete pouring structure or steel structure and is distributed in an H shape, the mudstone and lime mixed embankment layer comprises a soil fixing structure, and the soil fixing structure is arranged in a regular hexagon shape and is distributed in a honeycomb shape. By adopting the mudstone and lime-doped fill roadbed structure, the defects that mudstone is easy to expand and soften are overcome, and a stable structure is provided for the mudstone and lime-doped fill roadbed.

The application discloses a stress luminescence type chemical anchoring fog seal layer material with blackening and wear resistance functions and a construction method thereof, and relates to the technical field of pavement engineering pre-maintenance. The fog seal layer material is prepared from near-neutral non-ionic emulsified asphalt as a stable reaction matrix, high-carbon black content activated latex slurry is introduced to realize blackening and network enhancement of the asphalt pavement, the interface bonding and mechanical-optical response triggered by traffic load are realized through core-shell structure stress luminescence particles, and the interface chemical anchoring reaction is triggered when the demulsification of the interface catalytic anti-skid aggregate. The components play a synergistic effect in the storage, construction and service stages, and finally form a reinforced seal layer with stress luminescence visual guidance, high blackness, high anti-skid and long-term durability functions on the pavement, and the application is especially suitable for improving the road traffic safety in dark environments such as tunnels and road sections without street lamps.

The invention belongs to the technical field of pavement engineering, and discloses high-strength and high-ductility composite concrete for roadbed reinforcement, which is prepared from the following raw materials in parts by weight: 30 to 40 parts of cement, 4 to 6 parts of fly ash, 50 to 80 parts of graded sand, 0.1 to 0.2 part of polycarboxylic acid water reducing agent, 0.02 to 0.05 part of stabilizer, 0.02 to 0.04 part of defoaming agent, 0.02 to 0.04 part of plastic expanding agent, 0.2 to 0.3 part of chopped polypropylene fiber, 1 to 3 parts of basalt fiber 3D grid and 10 to 15 parts of water. The composite concrete contains the chopped polypropylene fiber and basalt fiber 3D grids, so that fiber bundles are completely distributed in the bending stress direction, the effects of stress transfer, load bearing and energy absorption can be achieved in time, meanwhile, the anti-layering effect is achieved, and the key effect is achieved on improvement of the bending strength and ductility of common concrete.