722results about "Paving details" patented technology

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

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

The invention discloses basalt fiber reinforced low-carbon environment-friendly asphalt and a construction method of the basalt fiber reinforced low-carbon environment-friendly asphalt on a high and cold road surface, and relates to the technical field of road engineering. The basalt fiber is subjected to ultrasonic treatment by a silane coupling agent KH-550 hydrolysate and dried, and the low-carbon additive is prepared from waste rubber powder and biological asphalt and is matched with an anti-stripping agent; adding biological asphalt, stirring at a high speed, adding basalt fibers in three times, stirring at a high speed, and finally adding an anti-stripping agent to prepare an asphalt composition; adding an asphalt composition for wet mixing, and then adding fibers for continuous mixing to obtain a mixture; after the lower bearing layer is preheated, a crawler-type paver paves at the temperature of 155-165 DEG C, and the speed and the loose paving coefficient are controlled; initial pressing, re-pressing and final pressing are carried out, and a double-steel-wheel and rubber-wheel road roller is used for rolling according to the temperature and the speed; and after compaction, the heat-insulating tarpaulin is covered. The low-temperature crack resistance and freeze-thaw resistance of the basalt fiber reinforced asphalt, the carbon emission reduction of the waste rubber powder and the biological asphalt and the construction quality guarantee through dynamic temperature control and intelligent compaction are realized, and the construction method is adaptive to the alpine regions and meets the requirements of green road construction.

The utility model discloses a bolted assembly type airport pavement structure, which comprises a plurality of adjacent prefabricated concrete upper cover plates and a plurality of prefabricated concrete base plates, the prefabricated concrete upper cover plates and the prefabricated concrete base plates are in bolted connection, each prefabricated concrete upper cover plate comprises an upper cover plate central part and four flange parts, the upper cover plate central part is a cube with the thickness of h, four flange parts with the thickness of h / 2 are arranged on the upper edges of the four side edges of the central part of the upper cover plate and partially extend outwards, the length of the long edge of each flange part is smaller than that of the central part of the upper cover plate, and the adjacent flange parts are not connected with each other; a boss is formed in the middle of the square precast concrete base plate with the thickness of h / 2, and the top face of the boss and the top face of the precast concrete upper cover plate are spliced to form a complete plane. The connecting mode is simple and practical, assembling and disassembling operation is easy and convenient, force transmission performance is excellent, and the stress requirement of an airport pavement structure is completely met.

The invention discloses a comprehensive design method for an anti-freezing pavement of a highway in a high-altitude severe cold area, relates to the technical field of road engineering, and solves the problems of high energy consumption, short service life, unfriendly environment or poor system reliability and the like generally existing in the prior art. And the design of combining structures, materials, energy and intelligent control is lacked. A comprehensive design method for an anti-freezing pavement of a highway in a high-altitude severe cold area comprises the following steps that S1, a multi-layer composite pavement structure is constructed, and the multi-layer composite pavement structure is composed of an anti-sliding and ice-inhibiting functional layer, an energy active layer and a heat preservation structure layer from top to bottom; and S2, a distributed state sensing network is arranged in the multi-layer composite pavement structure and on the roadside of the multi-layer composite pavement structure. Passive ice suppression, active ice melting, intelligent sensing and green energy are organically integrated to form a complete'sensing-decision-execution-energy supply 'closed-loop system, and the limitation of a single technology is broken through.

The invention is related to a modular wiring passage and junction system (10) for supplying power to electric vehicle chargers or other electrical devices in the public road.The modular system (10) of the invention comprises curb elements (11) connected and aligned with each other and with junction box elements (12) and corner box elements (13).To close the junction box (12) and the corner box (13) elements there exist junction box covers (15) and corner box covers (17) which are removable by means of a cover removal device (16).The curb element (11), the junction box element (12) and the corner box element (13) comprise through holes in their interior for the passage of wiring and on a front face an inclined portion (113) for an access ramp.

The invention relates to a road snow melting device as well as a preparation method and application thereof. The road snow melting device comprises a stable base layer and a thermal resistor, the stable base layer comprises an energy storage body, and the energy storage body can play a structure supporting role; the energy storage body is connected with external electric energy and the thermal resistor through wires. The preparation method of the energy storage body comprises the following steps: preparing cement-based printing slurry; filling the cement-based printing slurry into a 3D printing device, and stacking layer by layer to form a printing body; curing, maintaining, trimming and drying the printing body, and immersing the printing body into a soluble alkali / salt solution to obtain a cement-based electrolyte; a soluble alkali / salt solution is dropwise added to the surface of the electrode, then the electrode and the cement-based electrolyte are stacked and assembled, and an assembly is obtained; sealing and packaging the assembly body to obtain an energy storage body; a printing interlayer interface of the cement-based electrolyte has a directionally arranged pore structure, the pore diameter is 0.5-20 microns, and the porosity is 10-50%; and the hole orientation of the hole structure is consistent with the ion migration direction between the electrodes.

The invention provides low-temperature-resistant concrete as well as a preparation method and application thereof, and belongs to the field of building materials. The low-temperature-resistant concrete disclosed by the invention is prepared from the following raw materials in parts by mass: 100 to 2000 parts of cement, 2000 to 3000 parts of aggregate, 1000 to 3000 parts of sand, 200 to 500 parts of water, 5 to 15 parts of a water reducing agent, 0.1 to 5 parts of a de-foaming agent, 0.01 to 0.2 part of an air entraining agent and 0.01 to 0.2 part of a retarder. The low-temperature-resistant concrete contains the composite cement system composed of the sulphoaluminate cement and the Portland cement, compared with pure Portland cement and pure sulphoaluminate cement, the performance of the composite cement system is more excellent, the early strength of the concrete is improved through optimization of the water cement ratio and the synergistic hydration effect of a composite cement body, and the low-temperature-resistant concrete has the beneficial effects that the early strength of the concrete is improved; the anti-freezing durability in a low-temperature environment is enhanced, the strength loss rate after freezing and thawing cycles is low, and the anti-freezing concrete has a good application prospect.

The invention discloses a seasonal self-adjusting type frozen soil roadbed heat preservation method, belongs to the technical field of road engineering, and aims to solve the technical problems that the annual heat income and expenditure management is poor and the thermal stability of frozen soil is difficult to maintain for a long time due to the lack of seasonal self-adaptive adjusting capability in the conventional frozen soil roadbed heat preservation measure. According to the technical scheme, a heat preservation plate layer containing a closed air channel network is laid in the frozen soil roadbed, the two ends of the air channel network are connected with a first vertical ventilation pipe and a second vertical ventilation pipe respectively, and the opening and closing states of the air channel network are automatically regulated and controlled through temperature response mechanisms arranged on the pipes according to the environment temperature; the system can be adaptively switched among three modes of heat resistance and heat discharge in summer, cooling and cold storage in winter and transition buffering in spring and autumn. The method is mainly used for road roadbed construction and maintenance in permafrost and seasonal frozen soil regions, the thermal state of the roadbed can be effectively regulated and controlled, thaw collapse deformation is prevented, and long-term stability and safe operation of the road are guaranteed.

A surface structure 2 for an area of hard standing comprises a particulate body 14 formed from a plurality of particulates 16, such as gravel, bonded by a cured resin material. At least one mesh layer

The invention relates to the technical field of intelligent traffic equipment, in particular to an induction blind sidewalk brick, a trigger type tactile stick and a blind sidewalk cooperation system. The sensing blind sidewalk brick comprises a blind sidewalk brick body and a sensing device, wherein a cavity is formed in the blind sidewalk brick body; the trigger device is arranged on the blind sidewalk brick body and is used for receiving a trigger signal triggered by short-distance wireless induction; the sensing device is arranged in the cavity and is in signal connection with the triggering device, and the sensing device sends out a warning signal after the triggering device receives the triggering signal; wherein the trigger device is a tactile stick trigger device; a trigger signal triggered by short-distance wireless induction is sent out by the tactile stick. According to the tactile stick, a point-to-point identification relation is established through close-range induction (magnetism, metal and radio frequency), and the effect that the brick responds only when a visually impaired person carrying the tactile stick arrives is achieved; the selective triggering suppresses broadcast flooding caused by scene noise (raindrops, footsteps, baby carriages and the like), so that information fatigue and urban noise pollution are avoided.

Provided is a method for manufacturing an artificial turf, including: providing a base cloth; providing artificial turf yarns; tufting the artificial turf yarns on the base cloth, and applying an adhesive; and blowing air to the base cloth having the adhesive applied thereto to obtain the artificial turf. According to the manufactured artificial turf, when passing air through the air blowing device, water permeable holes are formed in the bonding layer applied on the base cloth. The water seepage rate of the artificial turf is increased by means of water seepage through the water permeable holes. Moreover, there is no need to pierce the adhesive applied surface of the base cloth during production, thereby avoiding damage to the structure of the artificial turf by piercing. This effectively prevents the artificial turf yarns from loosening and falling off and prolongs the service life of the artificial turf.

The invention provides multifunctional energy storage concrete, application thereof and an energy storage concrete member, and belongs to the technical field of concrete. The multifunctional energy storage concrete is prepared from the following components in parts by weight: 300 to 600 parts of ordinary Portland cement, 30 to 100 parts of mineral admixture, 300 to 700 parts of quartz sand, 5 to 60 parts of conductive material, 4 to 8 parts of admixture and 120 to 250 parts of water. The conductive material is added into the concrete, and a conductive network can be formed in the concrete material, so that the concrete has electric energy storage and conduction functions. The energy storage concrete provided by the invention can be used as a structural member for energy storage, and can also be combined with other energy technologies (such as solar energy and wireless charging) to realize integration of power generation, storage and utilization.

A paving slab is provided, including a slab body having a recess, a module which is arranged in the recess, wherein the module extends in a planar manner along a module plane, and a flat cover element, which is oriented along the module plane and is translucent at least in sections, for protecting the at least one module. The module is enclosed in a liquid-tight manner by the slab body and the cover element. The module includes a photovoltaic layer, a luminous layer and a support element to which the photovoltaic layer and the luminous layer are applied by screen printing, wherein the photovoltaic layer, the luminous layer and the entire module are flexible. Also provided is a paving system including the paving slab and to a method for producing the paving slab.

The invention discloses a road crack rapid repair method based on a regenerated healing agent and net crack paste, which comprises the following steps: evaluating the asphalt aging degree of a target repair crack area by using a portable near-infrared spectrometer, and calculating the asphalt aging coefficient; based on the asphalt aging coefficient, establishing a calculation model of the amount of a regeneration healing agent pre-used by the target repair crack; compressed air is adopted to clean the target repairing crack; according to the repairing area of the target repairing crack, the regeneration healing agent with the corresponding mass is evenly sprayed on the surface of the crack, and meanwhile the net crack paste with the corresponding size is flatly laid on the surface of the crack; and compacting the laid net-shaped crack paste by adopting a road roller. According to the repairing method, the crack can be quickly repaired, and only the surface of the crack needs to be coated with the regeneration healing agent and pasted with the net crack paste.

The invention relates to a wireless charging fabricated pavement and a construction method thereof.The pavement comprises a prefabricated concrete pavement base plate, a prefabricated transmitting coil module, an asphalt mixture thin layer and a transmitting coil control system, and the prefabricated concrete pavement base plate is arranged on the bottom layer; the prefabricated transmitting coil module is installed on the prefabricated concrete pavement base plate and communicated with the prefabricated concrete pavement base plate to form a continuous structure, and the asphalt mixture thin layer is laid on the surface layer of the continuous structure to form a wireless charging pavement traveling layer. And the transmitting coil control system is connected with the precast concrete pavement substrate through a cable. Compared with the prior art, the invention has the advantages of rapid assembly, stable operation, convenient maintenance and the like of the wireless charging road surface.

The utility model discloses a quick repair pavement patch for municipal engineering, and particularly relates to the technical field of road maintenance, the quick repair pavement patch comprises a pavement, a patch assembly and an adjusting assembly, and the patch assembly and the adjusting assembly are placed above the pavement; the patch assembly comprises a limiting groove plate, a mold plate and an insertion rod. Through the synergistic effect of the patch assembly and the adjusting assembly, the inserting rods are evenly inserted into asphalt filler in the vibration tamping process, vibration tamping is accelerated, air is exhausted, dense distribution is ensured, and the bearing capacity and durability of a road surface are improved; after the assembly is removed, a concave-convex structure is formed on the asphalt surface, the heat dissipation area is increased to accelerate the cooling speed, meanwhile, the anti-skid performance is remarkably enhanced by improving the roughness, and the driving safety in rainy days is guaranteed. In addition, the sliding design of the adjusting assembly can flexibly adjust the overlapping range of the first rectangular groove and the second rectangular groove, the size of the surface protruding block is controlled, the antiskid requirements of different traffic scenes are met, and the universality and adaptability of the device are enhanced.

The invention discloses a solar photovoltaic anti-skid floor tile which comprises a plurality of anti-skid photovoltaic power generation floor tiles with different areas and the same structure, a mounting guide rail used for assembling and combining the multiple anti-skid photovoltaic power generation floor tiles and LED lamp strips assembled between gaps of the anti-skid photovoltaic power generation floor tiles. Through the micro-bump anti-skid structure on the surface of the tempered glass panel, the wet friction coefficient is increased while the low dust adhesion characteristic of a smooth surface is kept, and the anti-skid requirement is met. By adopting the back wiring battery technology, the electrode grid lines are hidden on the back surface of the battery piece, so that the surface of the floor tile presents a pure black grain-free integrated visual effect, and the anti-shielding performance is excellent. The bottom supporting plate adopts a lightweight composite material or aluminum alloy combined with a honeycomb mould pressing SMC forming process, the weight of a single floor tile is greatly reduced compared with that of a traditional scheme, and in cooperation with the design of heat dissipation holes of an inner cavity of a honeycomb structure, the floor tile has the strict requirements for high-strength bearing force and supporting of various environments, the service life is further prolonged, and the floor tile is suitable for popularization and application. And the materials can be completely recycled.

The invention discloses a cover-excavation method steel cover plate and a connecting and limiting method thereof, and belongs to the technical field of foundation pit engineering. Aiming at the defects of large vibration, high noise, poor driving comfort, insufficient rigidity, low repeated utilization rate, improper connecting and limiting measures and the like of an existing cover-excavation method cover plate, a vertical support-horizontal support-steel cover plate integrated structure system is constructed, and vertical support is formed by constructing a foundation pit enclosure wall and a stand column pile; a first reinforced concrete support serves as a transverse horizontal support, a section steel longitudinal beam is erected to serve as a longitudinal horizontal support, reliable limiting between steel cover plates and between the plates and the beams is achieved by matching reserved holes and clamping grooves with bolts and clamping section steel, and the flatness and the vibration reduction effect are optimized with assistance of a rubber vibration reduction cushion layer. The steel cover plate adopts standardized H-shaped steel assembly welding and fiber concrete surface layer design, and can be repeatedly used. The problem of vibration noise of the cover plate under dense vehicle load is effectively solved, deformation of the foundation pit is controlled, interference of construction to the surrounding environment and traffic is reduced, the requirements of energy conservation and emission reduction are met, and remarkable environmental protection benefits and economic benefits are achieved.

The invention discloses a seasonal frost heaving thermal insulation control pavement structure, and belongs to the field of road engineering. The structure comprises an asphalt or concrete surface layer (1), an upper cement stabilized macadam layer (2), an upper sand cushion layer (3), an extruded sheet thermal insulation layer (4), a lower sand cushion layer (5) and a lower cement stabilized macadam layer (6), the extruded sheet thermal insulation layer (4) is a complete thermal insulation layer formed by splicing a plurality of extruded sheet units through mortise and tenon joint structures (7). Through the extruded sheet thermal insulation layer in mortise and tenon connection, heat transfer of the upper layer and the lower layer can be effectively blocked, displacement between the plates is prevented, and local frost heaving caused by a plate joint thermal bridge effect is avoided, so that the overall stability and durability of a pavement structure are remarkably improved, and the prevention and treatment requirements of seasonal frost heaving of pavements in regions with different freezing depths can be met.

The application relates to the technical field of road snow-melting and ice-melting, in particular to a snow-melting and ice-melting system and a construction method, the snow-melting and ice-melting system comprising a temperature measuring optical fiber, a DTS host, a control end, a temperature raising device and a water storage device; the temperature measuring optical fiber is laid on the upper layer of a road surface to realize real-time detection of the temperature of the road surface on the path; the temperature raising device is arranged between the road surface and a road surface heat preservation layer, the temperature raising device comprises a water inlet and a water outlet which are communicated with an inner chamber of the temperature raising device; the water storage device is connected with the water inlet and the water outlet; a signal input end of the DTS host is connected with the temperature measuring optical fiber, and a signal output end is connected with the control end; when the temperature value of the temperature measuring optical fiber obtained by the DTS host reaches an icing temperature boundary value, a temperature raising signal is sent to the control end, and the control end controls the water storage device to circulate and pass in hot conductive water into the chamber according to the temperature raising signal. The snow-melting and ice-melting system and the construction method solve the problems that the existing road snow-melting and ice-melting mode has poor effect and causes environmental pollution.

The utility model relates to the technical field of multifunctional sports ground anti-skid rubber floors, in particular to a multifunctional sports ground anti-skid rubber floor which comprises a rubber floor body, and an anti-skid mechanism convenient to disassemble and assemble is installed at the top of the rubber floor body. An anti-skid mechanism is installed on the rubber floor, an anti-skid plate capable of enabling the rubber floor to flow downwards to avoid accumulation is installed on the anti-skid mechanism, and an anti-skid sleeve hole used for improving the anti-skid performance of the surface of the rubber floor is formed in the anti-skid plate, so that the anti-skid performance of the surface of the rubber floor is improved through the anti-skid sleeve hole, and meanwhile the anti-skid plate can be detached from the rubber floor; after the surface of the anti-skid plate is excessively abraded for a long time, the single anti-skid plate can be directly replaced without replacing the whole rubber floor, so that the maintenance cost is effectively reduced, meanwhile, the center of the top of the anti-skid plate slightly protrudes, collected water sprayed on the floor can flow downwards, collected water accumulation is avoided, and the service life of the anti-skid plate is prolonged. The anti-skid performance of the floor is ensured.

According to the prefabricated pavement slab mounting structure and the construction method, the prefabricated pavement slab mounting structure comprises a leveling bonding layer laid on a foundation pavement and a prefabricated pavement slab arranged on the leveling bonding layer, a leveling hole of the prefabricated pavement slab is matched with an adjusting mechanism used for adjusting the elevation and gradient of the prefabricated pavement slab, and slurry before the leveling bonding layer is solidified is filled into a reserved hole; the slurry supplementing liquid flows into the leveling bonding layer through the reserved hole and is solidified with the unsolidified slurry of the leveling bonding layer to form an integrated structure. According to the prefabricated pavement slab mounting structure, the elevation and gradient of the prefabricated pavement slab are adjusted through the adjusting mechanism, the slurry supplementing liquid and the sheet adjusting bonding layer are solidified into an integrated structure, the interlayer bonding force is good, the bearing capacity is high, splicing type and full-width rapid on-site assembly thickening construction of the prefabricated pavement slab can be achieved on different types of foundation pavements, and the construction efficiency is improved. When the device is applied to airfield pavement slab repair, non-stop fast delivery is achieved, and when the device is applied to a steel bridge deck, the requirements of multi-dimensional deformation and stress release of a bridge, especially an extra-large flexible steel bridge under the action of external force are met.

The present invention relates to system for controlling animal pests that is to be used on public thoroughfares by means of a module (1) forming part of a sidewalk that has at least one entry (2) for animals to access an inner chamber (4) of said module (1), this chamber being configured to contain poison (10), a placebo and / or traps for the animal pests to be treated.

The utility model discloses a forklift ramp platform with an anti-skidding function, which comprises a forklift ramp platform main body, a ramp is arranged on the forklift ramp platform main body, an anti-skidding component is arranged in the ramp, a mounting component is arranged on the side wall of the anti-skidding component, and the mounting component is arranged on the side wall of the anti-skidding component. The mounting assembly is used for fixedly mounting parts of the anti-skid assembly, and the parts of the anti-skid assembly can be quickly mounted and dismounted through the mounting assembly; when the forklift turns or inclines, the friction force between the surface of the ramp and tires of the forklift is greatly increased due to the action of the antiskid plates, so that the phenomenon of sideslip or rollover caused by insufficient road holding force is effectively avoided, the forklift is more stable when running in a complex environment, and goods are prevented from falling off due to slippage.

This invention discloses an early-strength, high-stability road grouting repair material and its preparation, belonging to the field of solid waste utilization and road grouting reinforcement technology. The raw materials of the early-strength, high-stability road grouting repair material of this invention include multi-source solid waste aggregates and a water-reducing agent; the multi-source solid waste aggregates, by mass percentage, include: 6.6 wt% fly ash, 5-15 wt% rapid-hardening sulfoaluminate cement, 64-74 wt% mineral powder, 13.4 wt% desulfurized gypsum, and 1% carbide slag. This invention constructs a quaternary solid waste system of fly ash-desulfurized gypsum-mineral powder-carbide slag, synergistically forming a slurry composite system with rapid-hardening sulfoaluminate cement and a water-reducing agent, and precisely controls the concentration of raw materials. During hydration, this system can generate supporting crystals, which not only provide high early-stage stone strength for the road grouting material, but also, due to its good stability, ensure high stone strength stability in the later stages.

A grate frame assembly including an embed grate frame and an anchor which is installed on the embed grate frame onsite without tools or welding. The embed grate frame includes a main body, a protrusion, and a leg. The anchor has a body with a support end and an attachment end. The attachment end is selectively engaged with the protrusion. The leg of the embed grate frame is configured to engage a concrete form. The support end of the installed anchor contacts a wall located a distance from the concrete form. Together, the anchor and the leg on the embed grate frame hold the main body in place so that a compound material can be poured into a free space defined between the wall and the concrete form. The compound material secures the embed grate frame into a surface such as a sidewalk or road.

The invention relates to the technical field of road engineering, and discloses an old road composite disease layered repair and asphalt paving integrated process which comprises the following steps: carrying out layered targeted repair on old road diseases; carrying out synergistic enhancement treatment on a repair interface, namely arranging a high-elasticity polyurethane and asphalt stress absorption layer at a construction joint of the new and old plates, and carrying out mechanical micro grooving on the surface of a grouting area; evaluating a representative deflection value of the repaired pavement by using a drop weight deflectometer, and dynamically matching an asphalt paving structure scheme; after the glass fiber grating is laid, the matching scheme is executed. According to the composite pavement structure disclosed by the invention, a synergistic enhancement interface comprising the stress absorption layer and the micro-carving grooves is arranged between the repaired base layer and the asphalt surface layer. According to the method, the quantitative feedback relationship between the repairing effect and the paving design is established, and the systematicness and accuracy of the repairing project are improved by cooperatively enhancing the interface to inhibit the reflection crack.

The utility model relates to a tunnel noise-reducing and flame-retardant pavement structure, which aims to solve the problems of high noise and poor flame-retardant property of the conventional tunnel pavement. The tunnel noise-reduction and flame-retardant pavement structure sequentially comprises an upper surface layer, a middle surface layer, a lower surface layer, a base layer, a subbase layer, a stress absorption layer and a tunnel inverted arch from top to bottom, thermal spraying type modified asphalt is adopted between the upper surface layer and the middle surface layer to serve as a first bonding layer, and thermal spraying type modified asphalt is adopted between the middle surface layer and the lower surface layer to serve as a second bonding layer. A broken stone sealing layer is adopted between the lower surface layer and the base layer as a third bonding layer; wherein the upper surface layer is made of a macroporous asphalt mixture doped with a flame retardant, the middle surface layer is made of an asphalt mixture of SBS modified asphalt, and the lower surface layer is made of a rubber asphalt mixture. According to the tunnel noise-reducing and flame-retardant pavement structure, the fire retardant is doped in the surface layer, the ignition point of the pavement is improved, and the pavement surface layer adopts the macroporous asphalt mixture, so that the driving noise of the pavement is reduced, and the influence on driving and pedestrians is reduced.

The present application relates to a kind of rural road pavement widening construction methods in rainy area, including the following steps, the material component, density and moisture content of widening section subgrade should be same with the material component, density and moisture content of old roadbed same level layer, the side middle part of old road cement concrete layer is drilled and planted with reinforcement with interval distance, adjacent planted reinforcement interval is 40-50cm, then a layer of SBS anti-cracking paste is uniformly arranged along joint;1-1.5cm thick rubber stress absorbing layer is spread on the upper end surface of new and old road cement concrete layer;With new asphalt, regenerating agent material, graded RAP material, aggregate and mineral powder are mixed in hot state, then asphalt concrete surface layer is paved on the upper end of rubber stress absorbing layer, and the thickness is 5-8cm.The present application prevents water damage caused by rain, delays damage at joint, reduces the probability of crack occurrence, and improves the service performance and durability of pavement.