107 results about "Pavement engineering" patented technology

The invention relates to an intelligent compaction monitoring method and system for a highway subgrade pavement. The method comprises the following steps: collecting construction site data of the highway subgrade pavement; wherein the construction site data comprises soil mass density, water content and temperature; inputting the construction site data into a compactness prediction model to obtain the compactness of the roadbed and the pavement; wherein the compaction degree prediction model is constructed based on a quantitative relation between construction site data and radar signals; and carrying out early warning on the compaction degree. According to the invention, intelligent and precise monitoring of the compaction degree of the roadbed and the pavement can be realized, the accuracy and the reliability of compaction quality evaluation are improved, data support is provided for optimization of a compaction construction process, and the roadbed and pavement engineering quality is effectively guaranteed.

The invention relates to the technical field of airport pavement project quality acceptance, in particular to an airport pavement project quality acceptance method and system based on three-dimensional laser scanning. The method comprises the following steps: firstly, acquiring an original point cloud data model of an airport pavement to be measured by using a three-dimensional laser scanner, and preprocessing data to generate a standardized three-dimensional point cloud model; according to a preset acceptance requirement, processing data required by acceptance by adopting a TIN construction technology, and extracting an average point location elevation and a plane coordinate of an acceptance area to form an elevation point cloud model; and the elevation point cloud model and the three-dimensional point cloud model are intelligently spliced, and a preset evaluation standard is combined, so that the pavement quality is automatically judged. According to the method, the problem of low data processing efficiency in a traditional acceptance method is solved, accurate modeling of a complex pavement structure is realized through a TIN construction technology, and the reliability of an acceptance result is improved; and more efficient and reliable technical support is provided for quality control of airport pavement engineering.

The invention provides a pavement flatness control system and method, electronic equipment and a storage medium, the system is suitable for a paver, and the system comprises a sensor module used for transmitting the collected height value, slope value and fluctuation change value of a pavement to a central control module; the central control module is used for acquiring a first difference value between the height value and the slope value of the road surface and a preset paving thickness reference and a second difference value between the fluctuation change value and a preset flatness threshold value, acquiring a flatness deviation value based on the first difference value and the second difference value, and generating a regulation and control instruction based on the flatness deviation value; and the execution module is used for adjusting parameters of the paver according to the received regulation and control instruction so as to control the flatness of the pavement. According to the paver, the real-time data of the pavement are collected in real time through the sensor module, the parameters of the paver are adjusted in combination with the central control module and the execution module, full-automatic and high-response pavement flatness control is achieved, the construction quality and efficiency are improved, and the harsh standard of pavement engineering is met.

The invention discloses a method for detecting softening resistance, chlorine salt erosion resistance and frost heaving resistance of aggregate, and relates to the field of performance detection of aggregate for pavement engineering, and the method comprises the following steps: obtaining image information of the preprocessed aggregate, carrying out partition processing on the image information by using an image partition processing technology, and obtaining a classification result of the aggregate according to a processing result; carrying out interval sampling on the aggregate based on the classification result, and carrying out identification analysis on the aggregate in combination with a directional tracking algorithm to obtain a grading result of the aggregate; carrying out softening resistance, chlorine salt erosion resistance and frost heaving performance tests on the aggregate, and summarizing the relationship between the aggregate color and the mass loss to obtain the mass loss result of the aggregate; and performing product performance fitting operation on the aggregate to evaluate the aggregate use performance satisfaction degree under the condition of a corresponding quality loss result so as to optimize the aggregate pretreatment process. According to the invention, softening resistance, chlorine salt erosion resistance and frost heaving performance tests are carried out on the aggregate to obtain the mass loss result of the aggregate, and the quality problem can be identified in advance.

The invention relates to a dual-purpose pavement engineering vehicle, and relates to the technical field of engineering machinery, the dual-purpose pavement engineering vehicle comprises a vehicle body, a detection assembly and an adjusting assembly, the vehicle body is provided with a bearing plate, and the bearing plate is used for placing precise instrument equipment; the number of the detection assemblies is two, and the two detection assemblies are located on the two sides of the advancing direction of the vehicle body correspondingly and used for detecting the flatness of the road surface; the number of the adjusting assemblies is two, the two adjusting assemblies are located on the two sides of the advancing direction of the vehicle body respectively and correspond to the two detecting assemblies in a one-to-one mode, and the adjusting assemblies are arranged on the vehicle body and used for adjusting the levelness of the bearing plate. The method has the effect of improving the stability of the engineering vehicle.

The invention relates to the technical field of airfield pavement engineering design, in particular to an airfield pavement unevenness detection method and system, pavement three-dimensional elevation point cloud data capable of accurately reflecting airfield pavement features are quickly acquired by adopting a laser scanning technology, the data acquisition speed and density are greatly improved, and the detection accuracy is improved. Meanwhile, road surface unevenness information is obtained according to the road surface three-dimensional elevation point cloud data and a road surface reference plane, the airport runway is subjected to strip division according to a preset width, the road surface unevenness information in a strip is sampled, the unevenness representative value of each sampling area is calculated, and the unevenness representative value of each sampling area is calculated; the unevenness of the strip is obtained according to the unevenness representative value of each sampling area and the runway unevenness information, the unevenness condition of a key area where an airplane interacts with a runway is reflected more accurately, and the reliability of an unevenness calculation result is improved; in addition, by constructing the airport runway pavement unevenness information base, the unevenness information can be obtained and updated in time.

The present invention relates to the technical field of pavement engineering. Disclosed are a pavement distress detection method and apparatus, a device and a medium. The method comprises: carrying out distress detection on a pavement radar image respectively on the basis of a well-trained large-object detection model and a well-trained small-object detection model, to correspondingly obtain a large-object detection result and a small-object detection result, respectively; and fusing the large-object detection result and the small-object detection result to determine a distress detection result of the pavement radar image, wherein the large-object detection model comprises a deformable convolution layer, a dual-path detection head, and a soft non-maximum suppression operation layer, and the small-object detection model comprises a multi-scale convolutional layer, a deformable ROI pooling layer, a dual-path detection head, a balanced line loss function, and a soft non-maximum suppression operation layer. The structure and corresponding function of a dual-path object detection model are controlled in a targeted manner, and detection results of the two paths are fused, such that the reliability of a final distress detection result is guaranteed.

The invention relates to the technical field of pavement engineering, in particular to a concrete retaining wall pouring formwork installing and fixing structure and a construction method thereof.The concrete retaining wall pouring formwork installing and fixing structure comprises a plurality of formwork devices which are evenly distributed from left to right and attached, each formwork device comprises two pouring plates which are symmetrically distributed front and back, the two pouring plates are of a V-shaped structure, and openings of the two pouring plates are opposite; the opposite ends of the two pouring plates are each connected with two connecting mechanisms which are distributed up and down, and the connecting mechanism located on the lower side is connected with two rectangular plates which are symmetrically distributed left and right and provided with circular through holes. The connecting strength of the multiple connected formwork devices can be further enhanced at the same time through the two locking screws, the multiple connected formwork devices and the two fixing devices can be integrally locked and limited at the same time, and the stability of a pouring space formed by the multiple formwork devices and the two fixing devices is improved.

The invention discloses a method for microwave catalytic regeneration of a waste epoxy asphalt mixture, which comprises the following steps: crushing and screening the waste epoxy asphalt mixture to serve as a main aggregate, mixing the main aggregate with an iron ore aggregate with strong microwave absorption and ferromagnetic powder, adding a hydroxyl-rich or ester-rich polymer, a catalyst for ester exchange reaction and an asphalt regeneration agent, and carrying out microwave catalytic regeneration to obtain the waste epoxy asphalt mixture. And after preheating and microwave catalysis, compacting and molding to realize regeneration of the waste epoxy asphalt mixture. According to the microwave heating regeneration method of the waste epoxy asphalt mixture, the waste epoxy asphalt mixture milled in pavement engineering can be recycled in situ, and resource utilization of the waste epoxy asphalt mixture is achieved.

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 preparation method of a graphene modified asphalt concentrated solution, and belongs to the technical field of road materials. According to the method, the graphene modified asphalt concentrated solution with high dispersity and high stability is prepared through the optimized component formula and the process steps of stripping firstly and stabilizing secondly. The concentrated solution is prepared from graphene, a dispersing agent, a stabilizing agent and carrier oil, and the mass ratio of the graphene is 1%-15%. The preparation method comprises the following steps: performing mechanical stirring and ultrasonic treatment on the graphene in the carrier oil to realize pre-dispersion and stripping; then adding a stabilizer, and performing high-speed shearing to refine and stabilize; and finally, carrying out homogenization treatment to obtain a finished product. The concentrated solution has excellent storage stability, can be quickly and uniformly dispersed in asphalt, is convenient to use and is suitable for different engineering scenes. When the modified asphalt is used for modifying matrix asphalt, the high-temperature stability, low-temperature crack resistance and aging resistance of the asphalt can be remarkably improved, and the modified asphalt is suitable for long-service-life pavement engineering such as high-grade highways and airport runways.

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 utility model relates to the technical field of road surface drilling, and discloses a road surface engineering drilling device which comprises a base, an opening is formed in the base, a horizontal moving assembly is arranged in the opening, a box body is arranged at the driving end of the horizontal moving assembly, a moving plate is installed in the box body through a lifting driving assembly, and the lifting driving assembly is connected with the moving plate. A movable plate is arranged on the box body, a punching assembly is installed on the movable plate, a dustproof cover is arranged on the periphery of the drilling end of the punching assembly, the box body is further provided with a fixing plate, an air blowing assembly is arranged above the fixing plate, a lifting driving device is arranged below the fixing plate, and an air outlet head is arranged at the driving end of the lifting driving device. According to the device, through the arranged lifting driving device, the air outlet head can be driven to move into the hole to blow broken stones in the hole, subsequent use is prevented from being affected, and the problems that in the prior art, broken stones are left in the hole, and insertion of subsequent rod-shaped objects is affected are solved.

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.

The side pile positioning device comprises a vehicle body and a push rod, the push rod is welded between the two ends of the right side of the top of the vehicle body, a liquid tank is fixedly installed between the push rod and the vehicle body, and a transmission cavity is formed in the center of the interior of the vehicle body. And the left side of the bottom end in the transmission cavity is movably connected with a large fluted disc, and a threaded rod is inserted into the large fluted disc. According to the side pile positioning device for pavement engineering construction, the transmission cavity is formed in the center of the interior of the vehicle body, the device is pushed to the position where piling is to be conducted through trundles, a rotating rod is rotated on the upper portion, a small fluted disc is rotated in the transmission cavity, then a large fluted disc on the left side is engaged and pushed, and the right side of a limiting support is embedded in a sliding groove; when the marking and positioning device is used, the threaded rod can be guided to vertically sink the coining die, marks with pigment are printed on the ground, edge piles are laid on the marks subsequently, and the problem that marking and positioning are strenuous is solved.

The invention relates to the technical field of pavement engineering, and provides a square invisible drainage ditch edge pavement leveling device and a construction method.The leveling device comprises a support, a leveling device body, a leveling device body and a leveling device body, and the support body comprises a support body, a first vertical frame and a second vertical frame; the electric control lifting mechanism is connected to the bracket main body; the two paving auxiliary modules comprise leveling anchoring parts and grouting cavity forming parts, the leveling anchoring parts are connected to the lower portion of the electric control lifting mechanism through angle conversion structures, and the grouting cavity forming parts are connected to the leveling anchoring parts in a lifting and lockable mode; the leveling anchoring part comprises a leveling adaptive plate used for being supported on the ground on one side of the drainage ditch, the grouting cavity forming part comprises a grouting cavity upper plate parallel to the leveling adaptive plate, a grouting pipe passing hole is formed in the leveling adaptive plate, a grouting hole is formed in the grouting cavity upper plate, and the grouting cavity forming part and the inner side wall of the drainage ditch can define a grouting cavity. A leveling device is paved on the edge of the invisible drainage ditch of the square.

The invention discloses a joint process of an asphalt pavement, and relates to the technical field of pavement engineering. According to the seaming process provided by the invention, a waterproof roll is laid in a seaming area, and a seaming material and a reinforcing agent are laid on the upper surface of the waterproof roll; carrying out compaction treatment, post-treatment and quality inspection on the joint material and the reinforcing agent in the joint area; through fine joint pretreatment, an optimized joint material and an improved construction process, the strength and the waterproof performance of the joints are remarkably improved, the problems that in a traditional joint method, the joints are insufficient in strength, prone to being eroded by water, prone to cracking and the like are effectively solved, and therefore the service life of the road is remarkably prolonged, the maintenance cost is reduced, and the service life of the road is prolonged. The method has remarkable economic benefits and social benefits, the sealing performance and durability of joints are ensured through layered laying of joint materials and compaction treatment of a hot-pressing process, and the method adapts to high-strength traffic loads and various weather conditions.

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 utility model relates to the technical field of road surface tamping, and particularly discloses a road surface tamping device for roadbed and road surface engineering construction, which comprises a moving plate, a tamping plate is arranged below the moving plate, the left side and the right side of the tamping plate are both provided with mounting grooves, and the outer wall of the lower end face of the tamping plate is sleeved with a wear-resisting plate. Mounting blocks slidably connected with the mounting grooves are fixedly connected to the left side and the right side of the wear-resisting plate correspondingly, the mounting blocks on the left side and the right side of the wear-resisting plate slide into the mounting grooves, then the wear-resisting plate can be stably mounted on the outer wall of the tamping plate, and tamping work is conducted through contact between the wear-resisting plate and the ground; when the wear-resisting plate is worn, the external wear-resisting plate can be directly replaced, so that the tamping plate can be protected, the tamping plate is prevented from being worn, the service life is prolonged, the strength of the tamping plate can be increased through the reinforcing plate and the reinforcing plate, and the use strength of the tamping plate is further improved.

The utility model relates to the technical field of pavement engineering detection experiment devices, in particular to a portable core drilling machine loading and unloading device. Comprising a support of a frame structure and a chain block arranged at the upper end of the support, the support comprises two front stand columns arranged in parallel, two rear stand columns arranged in parallel, a cross beam fixedly connected between the two front stand columns or the two rear stand columns, and longitudinal beams fixedly connected between the front stand columns and the rear stand columns; a telescopic rod capable of stretching out and drawing back downwards is installed on the front stand column, a front walking wheel is installed at the lower end of the telescopic rod, and rear walking wheels are installed at the lower ends of the two rear stand columns. The device is firm in structure and convenient to use, manual carrying is not needed when the concrete coring machine is loaded and unloaded, labor can be saved, personnel safety is guaranteed, the requirement for the height of a transport carriage is not limited to the lifting amplitude of a working platform of the coring machine any more, and adaptability is high.

The utility model discloses an asphalt pavement engineering detection device which comprises a movable seat, two rotating rods are rotatably mounted on the bottom wall of the movable seat, traveling wheels are fixedly mounted at two ends of each rotating rod, detection equipment is fixedly mounted on the movable seat, and marking equipment is fixedly mounted on the movable seat. An L-shaped mounting frame is fixedly mounted on the mounting seat, a second rotating column is rotatably mounted on the L-shaped mounting frame, and a brush is arranged on the second rotating column. In the using process, when the movable base moves, the front side rotating rod rotates to drive the first rotating column to rotate, the first rotating column can drive the second rotating column to rotate on the L-shaped mounting frame through transmission cooperation of the first belt wheel, the second belt wheel and the transmission belt, and therefore the brush is driven to rotate for cleaning; when the moving seat is manually pushed to advance, the brush can be driven to rotate and sweep, no extra motor is needed for driving, and more energy is saved.

The present invention discloses a test device for bleeding performance of semi-flexible pavement, which includes a transparent sleeve, a cross plate, a lower cover, a grille and a pressing rod. The shape of the grille is the same as the cross-section of the inner wall of the sleeve, and the lower cover is detachably connected to the sleeve. It is characterized in that multiple groups of rectangular-shaped clamping holes are longitudinally and parallelly arranged on the upper layer of the outer wall of the sleeve. The bottom of the pressing rod is threadedly connected to the grille. A circular opening is arranged on the outer wall of the sleeve near the bottommost clamping hole, and a water storage device is provided at the bottom of the opening. It can simulate the actual use situation of the slurry, comprehensively consider the fixing and interfering effects of aggregates on the slurry, and the influence of factors such as the dynamic bleeding process on the bleeding characteristics of the slurry, provides a reliable test method for the key indicators of the performance of the semi-flexible pavement slurry, and can effectively improve the quality of 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 application discloses an airport road pavement multi-load coupling impact toughness dynamic detection method and relates to the technical field of airport pavement engineering detection. The application discloses an airport road pavement multi-load coupling impact toughness dynamic detection method and relates to the technical field of airport pavement engineering detection. The application discloses an airport road pavement multi-load coupling impact toughness dynamic detection method and relates to the technical field of airport pavement engineering detection. The application discloses an airport road pavement multi-load coupling impact toughness dynamic detection method and relates to the technical field of airport pavement engineering detection. The application discloses an airport road pavement multi-load coupling impact toughness dynamic detection method and relates to the technical field of airport pavement engineering detection. The application discloses an airport road pavement multi-load coupling impact toughness dynamic detection method and relates to the technical field of airport pavement engineering detection. The application discloses an airport road pavement multi-load coupling impact toughness dynamic detection method and relates to the technical field of airport pavement engineering detection. The application discloses an airport road pavement multi-load coupling impact toughness dynamic detection method and relates to the technical field of airport pavement engineering detection. The application discloses an airport road pavement multi-load coupling impact toughness dynamic detection method and relates to the technical field of airport pavement engineering detection. The application discloses an airport road pavement multi-load coupling impact toughness dynamic detection method and relates to the technical field of airport pavement engineering detection. The application discloses an airport road pavement multi-load coupling impact toughness dynamic detection method and relates to the technical field of airport pavement engineering detection. The application discloses an airport road pavement multi-load coupling impact toughness dynamic detection method and relates to the technical filed of airport pavement engineering detection. The application discloses an airport road pavement multi-load coupling impact toughness

The utility model discloses a pavement engineering paving device which comprises a push plate, a cement paste barrel is fixed at the top end of the push plate, a paving discharge port connected with the cement paste barrel is arranged at the bottom end of the push plate, a top cover is arranged at the top end of the cement paste barrel, and a push handle is fixed on one side, opposite to the cement paste barrel, of the top end of the push plate. A limiting connecting mechanism is arranged between the top cover and the cement paste barrel, the surface of the pushing handle is sleeved with a holding anti-skid mechanism, and the limiting connecting mechanism comprises a connecting assembly arranged at the joint of the top cover and the cement paste barrel; through the designed connecting groove, the connecting block, the limiting groove, the limiting buckle and the telescopic spring, accurate limiting connection of the top cover and the cement paste barrel can be achieved, meanwhile, the top cover and the cement paste barrel can be firmly fixed together in cooperation with the designed positioning hole, the screw hole and the positioning screw rod, and compared with the prior art, the top cover and the cement paste barrel are convenient to use. And the opening and closing work of the cement paste barrel is greatly facilitated.

The utility model discloses a detection sampling system for pavement engineering, which comprises a main body piece, a sampling piece and a plurality of positioning pieces, the plurality of positioning pieces can rotate according to the pavement working condition of an operation area, and when the plurality of positioning pieces respectively rotate to different angles and are inserted into the operation area, the stable positioning of the main body piece is formed; the main body piece is effectively prevented from sliding back and forth and left and right, and the situation that the main body piece is driven to move in the vertical direction by the counter-acting force borne by the main body piece when the sampling piece carries out sampling operation is avoided, so that the sampling piece can always carry out sampling operation with the main body piece as a reliable operation basis, the operation reliability is improved, and the sampling efficiency is improved. The detection sampling system is simple in structure and convenient to operate, reduces labor intensity of operators, can adapt to working conditions of pavement engineering through rotation of the positioning part especially in the face of complex working conditions, adaptively performs positioning operation of the whole detection sampling system through reliable positioning points, and is higher in operability.

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.