42 results about "Reflective crack" patented technology

The invention discloses a white and black pavement structure exterior and interior disease one-key plotting method oriented to pavement health management, and relates to the technical field of road engineering detection and maintenance. Reflection crack tracing is realized based on an interlayer disease conduction rule by establishing a cement board joint coordinate system; the method comprises the following steps: determining the types of broken slabs and slab corner fractures by utilizing the spatial geometrical relationship between cracks and joints, calculating indexes such as a load transfer coefficient, a reflection crack rate, a slab breakage rate and a pavement condition index, and generating a visual result containing disease distribution and performance parameters in a linkage manner. According to the method, the traditional single structure layer analysis limitation is broken through, the reflection crack recognition accuracy rate exceeds 92%, the broken plate judgment accuracy rate reaches 94% or above, the batch data processing time complexity is optimized to O (n + m), the single road section analysis time is shortened to be within 5 minutes from 2 hours, the problems of low manual detection efficiency, large errors and the like are effectively solved, and quantitative support is provided for precise maintenance of white and black pavements.

The present application relates to a kind of anti-cracking building solid waste road flexible base mixture and its preparation method, base mixture includes building solid waste mixed aggregate, pitch, mineral powder;Building solid waste mixed aggregate is composed of broken concrete aggregate, broken brick, broken ceramic, broken glass, the mass ratio of broken concrete aggregate, broken ceramic, broken glass in the coarse aggregate of building solid waste mixed aggregate is (68-74):(23-29):(0.1-0.6);Pitch is heavy intersection 70 # matrix asphalt or 90 # matrix asphalt any one or combination thereof;Mineral powder is limestone mineral powder with 90%-100% purity, particle diameter is 0.8um-12um.The present application can reduce the crack of road base caused by temperature shrinkage and dry shrinkage on one hand, effectively prevent the phenomenon that base layer cracking leads to surface layer reflection crack;On the other hand, building solid waste is applied to road base, not only reduces material cost, saves natural mineral resources, but also can protect ecology, solve environmental pollution and other problems, with obvious environmental benefits, economic benefits and social benefits.

This invention provides a construction method for improving the drainage capacity of road structures, relating to the field of drainage function technology for the renovation and upgrading of old roads. It separates water bodies between the upper and lower structural layers and the original ground surfaces on both sides of the road structure layer by forming an emulsified asphalt layer and waterproof geotextile. A rapid drainage structure is formed using a concrete pavement crushed stone layer, filled with crushed stone, drainage geogrids, sidewalk rubble, a filter layer, and drainage pipes. This achieves rapid drainage of the road structure, ensuring the stability of the road structure layer in the renovation of old pavements, reducing differential settlement caused by groundwater and other factors, and avoiding disturbance to the road and the resulting reflective cracks. This invention improves the drainage performance at the junction of sidewalks and roads, reducing water disturbance problems.

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 invention discloses a few-crack durable first-grade highway pavement structure suitable for a seasonal frozen region, and belongs to the technical field of highway engineering. Comprising an upper surface layer, a middle surface layer, a stress absorption layer, a first cement stabilized macadam double-layer base layer, a second cement stabilized macadam double-layer base layer, a macadam hardcore and a roadbed. However, interlayer tensile strain is concentrated, base layer air shrinkage and reflection cracks are difficult to effectively restrain, and interlayer weakening is easily caused by construction and operation temperature gradient. And the problem that structural forms and parameter ranges considering crack resistance, rut resistance and water stability are incomplete under the conditions of cold weather and large traffic load due to the lack of a system solution of pavement layer combination, stress absorption and construction window coordination in a seasonal frozen area is solved.

The utility model discloses an anti-reflection crack structure of a white and black road pavement. The anti-reflection crack structure comprises a concrete layer, a double-twisted reinforced steel wire mesh, a bonding layer, a stone chip layer and a first asphalt layer which are sequentially arranged from bottom to top. According to the utility model, the pavements are paved through the twisted-pair reinforced steel wire meshes, and uneven stress caused by a load effect is transmitted to the twisted-pair reinforced steel wire meshes, so that the effects of buffering, counteracting and reducing the uneven stress are achieved, the overall stress is uniform, the integrity is enhanced, and the service life of the pavement is prolonged. Spreading of the stone chips generates the effect similar to concrete surface scabbling, the integrality among the concrete layer, the double-twisted reinforced steel wire mesh and the first asphalt layer is enhanced, and therefore block sliding and cracking caused by the horizontal acting force of the road surface can be avoided.

The invention provides an asphalt overlay material and a preparation method thereof. The asphalt overlay material comprises the following raw materials in parts by mass: 12-18 parts of high-viscosity and high-elasticity modified asphalt, 75-82 parts of aggregate and 0.5-2 parts of an additive, the dynamic viscosity of the high-viscosity and high-elasticity modified asphalt at 60 DEG C is 300,000-500,000 Pas, the ductility at 5 DEG C is 35-45 cm, and the elasticity recovery at 25 DEG C is greater than or equal to 95%; intermittent grading is adopted in the aggregate, and the additives are an anti-stripping agent and a warm mixing agent. The material is suitable for 1.0-1.5 cm ultra-thin overlay engineering, the reflection crack fatigue life is larger than or equal to 1200 times of circulation, the dynamic stability at 60 DEG C is larger than or equal to 4300 times / mm, the low-temperature flexural-tensile strain at-10 DEG C is larger than or equal to 3500 [mu] m, reflection cracks can be effectively inhibited, the service life of a pavement can be effectively prolonged, construction is efficient and energy-saving, and the material is suitable for various scenes such as a dry area, a wet area, a seasonal freezing area and heavy traffic.

The invention discloses a pavement crack treatment auxiliary decision-making method based on pavement surface-interior cooperative detection. According to the method, road surface and internal data are synchronously collected through integrated equipment, cracks are accurately positioned by adopting a pixel-level longitude and latitude mapping method based on spherical geometry, and a dynamic threshold model fusing multi-dimensional information such as road service life, traffic load, climate and maintenance history is constructed. The relevance between the road surface and the internal crack is scientifically judged, and the road surface and the internal crack are accurately divided into a fatigue crack, a reflection crack and a through crack. On the basis, according to the method, the road condition is evaluated through the quantitative evaluation index S, and a targeted treatment scheme is formed in combination with the crack type and number, so that the problem of improper or incomplete treatment caused by inaccurate judgment in traditional maintenance is effectively solved, and the treatment effect is remarkably improved.

The invention relates to a liquid supplementing and slurry extracting construction process based on a graded broken stone structure and application of the liquid supplementing and slurry extracting construction process, and belongs to the technical field of road engineering. The process provided by the invention is suitable for transforming a low-grade cement road into an asphalt pavement under medium and light traffic volume, adopts an embedded compact grading design, adopts a plant mixing method to mix graded broken stones, and adopts a liquid supplementing and slurry extracting process to improve the modulus of a graded broken stone layer, so that the upward development of reflection cracks can be effectively inhibited and delayed, and the pavement quality is improved. And in addition, the construction cost of the reconstruction scheme is low, the reconstruction speed is high, and the construction period is short.

The utility model discloses a base section construction joint road structure for preventing reflection crack, which comprises two sections of base layers and high-strength cement blocks, the high-strength cement blocks are arranged between the two sections of base layers, the inner sides of the two sections of base layers are provided with base grooves, the inner sides of the base grooves are provided with rectangular grooves, the inner sides of the rectangular grooves are provided with steel support plates, and the steel support plates are provided with grooves. The utility model discloses a glass fiber net structure, it is equipped with high-strength cement block, the reinforcing subassembly is equipped with the high-strength cement block, the reinforcing subassembly is used for reinforcing the junction of two sections of base course, the reinforcing subassembly includes high-strength complete plate, even if the glass fiber net is damaged, when the junction outside the base course suffers from big extrusion, through the high-strength complete plate support, the base course will not be damaged, and the base course will not be damaged. The high-strength complete plate is of a high-strength complete structure and replaces base layer mortar to be installed at the joint of the two base layers, so that the situation of reflection cracks is effectively avoided, the high-strength complete plate is supported through the steel supporting plate, and the situation that the high-strength complete plate is extruded and inclines is avoided.

The invention relates to the technical field of road engineering, in particular to a method and system for predicting the service life of a semi-rigid base pavement structure, and the method comprises the steps: obtaining crack related data of a target pavement and operation data reflecting the service conditions of the pavement; based on the crack related data, crack state parameters used for representing the reflection crack development state in the target pavement are determined; based on the crack state parameters and the operation data, a prediction model of the crack development state changing along with the pavement service condition is established; and setting an end-of-life criterion corresponding to the crack state parameter, and when a prediction result of the prediction model meets the end-of-life criterion, determining the structural service life of the target pavement. According to the invention, the problems of low crack development prediction precision and incapability of dynamically adapting to the change of service conditions in the prior art are effectively solved, and the accuracy and adaptability of pavement life prediction are remarkably improved.

This invention relates to the field of road surface settlement prevention technology and discloses a method for preventing settlement of the road surface at the edge of a basement. This method includes the following steps: First, the excavated surface of the basement is backfilled and compacted in layers until the compaction degree meets the design requirements; after backfilling the excavated surface to a suitable position at the top of the basement, a 20cm thick C30 reinforced concrete anti-settlement slab is constructed; after the anti-settlement slab is poured and cured, a 2m wide geogrid is symmetrically laid along its edges to prevent reflective cracking at the joints. This method for preventing settlement of the road surface at the edge of a basement can effectively solve the problem of uneven settlement of the road surface around the basement in residential areas. In addition, this method can reduce the impact of vehicle impact loads on the basement exterior walls, ensure the strength, rigidity, and stability of the roadbed, improve the bearing capacity of the roadbed and pavement, and fully guarantee the design service life of the road.

The invention belongs to the technical field of road engineering maintenance, and particularly relates to a treatment method for heavy traffic road pavement reflection cracks. According to the method, accurate targeted repair is achieved in the mode that the discrete milling areas are arranged along the crack at intervals, whole-line milling is avoided, and the construction cost is effectively saved. A grouting pipe penetrating into a base layer is used for grouting, a middle-layer macroporous asphalt mixture stress absorption layer and a surface-layer asphalt mortar functional layer are combined, and a crack source for anchoring a crack from the bottom and adopting a high-strength slurry anchor cable is constructed; stress is eliminated in the middle, the stress of the pavement is absorbed by adopting a flexible material, and capillary water is prevented from rising; moisture is isolated at the top, and high-viscosity asphalt is adopted for complete sealing to prevent moisture from invading; therefore, the propagation path of the reflection crack is fundamentally blocked.

This invention relates to the technical field of road engineering, and in particular to a method for converting old road structures into long-life pavement structures based on low-carbon cold recycling, comprising the following steps: S1, milling and recycling of the old pavement layer; S2, conversion of the semi-rigid base course system by vibratory compaction using a road roller to convert the semi-rigid base course into a granular flexible subbase course; S3, injection of a semi-flexible isolation layer; injection of a highly permeable slurry into the crushed base course to form a flexible recycled isolation layer; S4, forming of the flexible recycled base course; uniformly spreading a mixture of milled recycled material and new aggregate on the isolation layer, and simultaneously spraying and injecting bio-based modified emulsified asphalt; S5, laying of a low-carbon surface layer; spraying a modified emulsified asphalt tack coat onto the surface of the flexible recycled base course, followed by spreading a rubber asphalt concrete surface layer, and finally compacting it. The construction method of this invention solves the problems of "high carbon emissions, rapid recurrence of reflective cracks, and short lifespan" in traditional old road reconstruction and expansion.

The invention relates to the technical field of road and bridge construction, in particular to a semi-rigid base layer reflection crack targeted inhibition structure and a construction method thereof.The semi-rigid base layer reflection crack targeted inhibition structure comprises a semi-rigid base layer, a lower face layer, a fiber resin composite crack-resisting interlayer, a middle face layer and an upper face layer from bottom to top; the adjacent kerf sections are separated by a retaining section, and stress dissipation holes are formed in the starting and ending end points and the corners of each pre-kerf; a composite crack pouring body is filled in the composite crack pouring body and is composed of a sealing reinforcing layer and a deformation core layer. A flexible deformation joint which is overlapped with the projection area of the broken-line-shaped kerf in the semi-rigid base layer in the vertical direction is arranged in the lower surface layer, and the flexible deformation joint is filled with a fiber reinforced asphalt mixture; the fiber resin composite crack-resistant interlayer is of a strip-shaped structure which is arranged between the lower surface layer and the middle surface layer and right faces the area above the flexible deformation joint. The problems of generation and upward expansion of reflection cracks in the pavement are solved, and active targeted inhibition is realized.

The application discloses a cement pavement "white to black" long-life epoxy asphalt thin-layer overlay and a construction method thereof. The epoxy asphalt thin-layer overlay structure is sequentially composed of a modified emulsified asphalt bonding layer, a 2cm AC-5 rich-oil modified asphalt mixture stress absorption layer and a 4cm AC-13 high-toughness plastic epoxy asphalt mixture surface layer from bottom to top. The core lies in that high-toughness plastic epoxy modified asphalt is used as a binder, which has excellent flexibility and strength. The structure can effectively reduce more than 50% of reflection cracks, and the road performance of the surface mixture is improved by more than 50% compared with ordinary asphalt mixture. The application realizes a total overlay thickness of only 6cm, reduces initial investment and material consumption, improves the durability of the pavement, prolongs the design service life by more than 50%, and solves the technical problems of thick overlay, easy damage and short service life in traditional "white to black" technology.

This utility model relates to the field of road paving technology and discloses a quick-release paver anti-segregation rubber baffle, including a rubber plate. Rectangular and L-shaped iron plates are respectively arranged on both sides of the rubber plate. Multiple iron chains are arranged at the bottom of the L-shaped iron plate. Multiple rubber fixing bolts, connecting bolt one, and connecting bolt two are threadedly connected inside the rectangular iron plate. One end of each of the multiple rubber fixing bolts extends through the interior of the rubber plate, and one end of each of the multiple connecting bolt two extends through the rubber plate and into the interior of the L-shaped iron plate. Multiple U-shaped buckles are arranged at the bottom of the L-shaped iron plate. In this utility model, the modular rubber plate and iron chains work together to adapt to the needs of different road conditions and are compatible with different gradations of water-stabilized mixtures. This significantly improves the smoothness and uniformity of the water-stabilized layer paving, reduces the risk of later reflective cracking, and simultaneously reduces material waste and the probability of rework.

The invention discloses a method for repairing reflection cracks on a road surface, and relates to the technical field of road maintenance. The method comprises the following steps: detecting reflection crack diseases of a to-be-maintained road, and dividing the to-be-maintained road into a mild reflection crack disease road section and a severe reflection crack disease road section; aiming at a heavy reflection crack disease road section, firstly, a road surface layer is completely milled and planed, then, a self-leveling organic silicone sealant is adopted to carry out crack pouring pretreatment on the surface of a base layer, and then a stress absorption layer, asphalt stabilized macadam and an anti-crack asphalt mixture are additionally laid on the top of the base layer. Aiming at a light reflection crack disease road section, an upper surface layer in a road is milled firstly, then a two-component polyurethane elastomer material is adopted to carry out crack pouring pretreatment on the surface of a lower surface layer, and then basalt warp-knitted fiber cloth, asphalt stabilized macadam and an anti-crack asphalt mixture are additionally laid in sequence. Different repairing methods are adopted for light and heavy reflection cracks, the problem of road reflection crack diseases is more scientifically, reasonably and efficiently solved, the pavement use performance is improved, the maintenance period is shortened, and the service life is prolonged.

The invention provides an ultrathin overlay structure with reflection crack resistance and strong adhesiveness and a construction process thereof, and relates to the technical field of road engineering. The ultra-thin overlay structure with the reflection crack resistance and the strong adhesiveness comprises an original pavement, high-viscosity emulsified asphalt, a broken stone sealing layer, special emulsified asphalt for the ultra-thin overlay and the ultra-thin overlay, the high-viscosity emulsified asphalt is laid on the upper surface of the original pavement, the broken stone sealing layer is laid on the upper surface of the high-viscosity emulsified asphalt, and the special emulsified asphalt for the ultra-thin overlay is laid on the lower surface of the ultra-thin overlay. The special emulsified asphalt for the ultra-thin overlay is laid on the upper surface of the gravel sealing layer, the ultra-thin overlay is laid on the upper surface of the special emulsified asphalt for the ultra-thin overlay, and the gravel sealing layer is made of gravel with a single particle size. According to the ultrathin overlay structure with reflection crack resistance and strong adhesiveness, stress at cracks of an old pavement can be effectively absorbed through the high-viscosity emulsified asphalt and the crushed stone sealing layer with the single particle size, and generation and development of reflection cracks are prevented.

The application discloses a composite structure and a reconstruction method for inhibiting reflection cracks of asphalt pavement, and relates to the technical field of road repairing. The technical scheme points of the composite structure and the reconstruction method are as follows: a self-flowing adhesive is filled in a joint; a crack prevention layer is laid on a cement concrete base layer and covers the joint completely; a stress release layer is covered on the crack prevention layer and is elastic; a plurality of reserved cracks are arranged on the stress release layer and are perpendicular to the length direction of the joint; the reserved cracks correspond to the positions of the joint; and a filler is filled in each reserved crack and is extruded and exploded to release a bonding material when being pressed; and an asphalt concrete surface layer is laid on the stress release layer. The composite structure and the reconstruction method can effectively prevent or delay reflection cracks of the asphalt surface layer caused by the joint of the cement concrete base layer, and improve the service performance and the service life of the asphalt pavement.

The application provides an optimal design method of a fiber rubber macadam seal coat for inhibiting pavement reflection cracks, comprising the following steps: determining optimal fibers; determining optimal aggregate; using the amount of the optimal fibers, the scattering amount of the optimal aggregate and the amount of rubber asphalt as variables, preparing multiple groups of third test pieces through orthogonal test; combining the third test pieces with a base layer and an overlay layer with cracks to prepare fourth test pieces and perform reflection crack simulation test; and determining the combination of the optimal crack resistance materials according to the test results. The application takes the anti-reflection crack capacity of the fiber rubber asphalt macadam seal coat itself as the main evaluation index, and has the advantages of scientificity, rationality and accuracy compared with the prior art. The fiber rubber macadam seal coat obtained by the design method has excellent anti-reflection crack capacity, can significantly improve the crack resistance of the composite pavement, reduce the pavement maintenance and repair cost, prolong the service life of the pavement, and has a wide popularization and application prospect.

The utility model relates to the technical field of road engineering, in particular to a simulation device for detecting the stress state of a semi-rigid base pavement, which comprises a simulation device main body, and a temperature simulation cavity is arranged in the simulation device main body. A temperature simulation heating mechanism is mounted in the left side embedded temperature simulation cavity of the simulation device main body, a temperature simulation refrigeration mechanism is mounted in the right side embedded temperature simulation cavity of the simulation device main body, a detection table is mounted at the bottom end of the inner wall of the temperature simulation cavity, and a bearing groove is formed in the top of the detection table; the semi-rigid base pavement stress simulation device is simple in structure, and the durability and the reflection crack resistance of the semi-rigid base pavement are evaluated by accurately simulating pavement stress states under different load and temperature conditions, so that the stress states of the semi-rigid base pavement can be more accurately simulated, a scientific basis is provided for pavement design and construction, and the semi-rigid base pavement stress simulation device is very practical.

The invention provides a semi-flexible pavement structure which comprises a semi-flexible base layer and an asphalt mixture surface layer which are arranged from bottom to top, and the semi-flexible base layer comprises an embedding and extruding structure formed by laying fine-particle-size broken stones and large-particle-size broken stones in a layered mode and cement emulsified asphalt mortar poured into the embedding and extruding structure. The cement-emulsified asphalt mortar is paved 2-4 cm above the interlocking structure, the fine-particle-size broken stones and the large-particle-size broken stones are limestone, and the cement-emulsified asphalt mortar is formed by mixing cement, cationic slow-breaking and quick-setting emulsified asphalt, fine aggregate, water and an additive; the asphalt mixture surface layer sequentially comprises a lower surface layer, a middle surface layer and a surface layer from bottom to top. The pavement structure base layer has rigidity, ductility, elasticity and toughness, the surface layer rigidity is large, the pavement structure overall rigidity is large, the stability is good, and the technical problem that ruts and reflection cracks are prone to occurring on an asphalt pavement can be effectively solved.

The invention discloses a process method for improving the interfacial energy of a geopolymer road grouting material, which comprises the following steps: step 1, selecting a certain in-service concrete cracked pavement in Wei'an, and performing'micro-crack homogenization-hole distribution-hole drilling 'treatment; 2, preparing the organic emulsion A, the emulsion B and the solution C to prepare a modified emulsion D; thirdly, the emulsion D is sprayed into the drill hole in the first step through a spray gun; step 4, modifying the geopolymer by adopting the emulsion D to prepare the geopolymer grouting material with low water-solid ratio; and step 5, grouting the geopolymer grouting material in the step 4 into the drill hole in the step 3 to obtain a sample. According to the invention, the preparation process of the interface energy of the geopolymer road grouting material is optimized, the problem of low adhesive force of the geopolymer road grouting material is solved, the interface energy and viscosity of the geopolymer road grouting material are improved, and the problems of pavement cracks and the like caused by reflection cracks are avoided.

The utility model belongs to the technical field of highway bridge and culvert engineering, and discloses a multi-span hole small bridge covering plate simply-supported-to-continuous structure which comprises a base, a side wall, a middle wall and a plurality of cover plates. According to the middle wall structure, the boss is arranged at the top end of the middle wall in the width direction of the base, the supporting stability of the middle wall to the cover plate is enhanced, the wall body thickness of the middle wall can be properly reduced so as to reduce the influence on a water cross section, the drainage capacity of a culvert is improved, the cost can be reduced, and water flow can be kept smooth. The cast-in-place connecting area is reserved between the adjacent cover plates, so that the embedded steel bar assemblies embedded in the cover plates can be welded and connected in the area, an integrated continuous structure is formed in combination with subsequent concrete cast-in-place, the problem of reflection cracks caused by deformation of a simply-supported structure at the top end of the middle wall is effectively solved, and the service life of the middle wall is prolonged. Therefore, the overall structural performance of the pavement is improved, road driving safety and comfort are guaranteed, and the service life of the pavement is prolonged.

The utility model discloses an expressway reconstruction and extension pavement structure, and belongs to the field of road reconstruction and extension, the expressway reconstruction and extension pavement structure comprises an original pavement, a paver, a milling machine and a grouting machine, the top of the original pavement is provided with a roadbed reinforcing layer, the top of the roadbed reinforcing layer is provided with a transition layer assembly, and the top of the transition layer assembly is provided with a surface layer assembly; by arranging the roadbed reinforcing layer, the transition layer assembly, the surface layer assembly, the paver, the milling machine and the grouting machine, the construction period is short, the influence on traffic is small, the timeliness requirement of expressway reconstruction and extension can be met, the bonding strength of new and old pavements is high, the quality problems of reflection cracks, uneven settlement and the like are effectively avoided, meanwhile, the construction cost is controllable, the construction efficiency is high, and the construction period is shortened. And the method has remarkable economic benefits and social benefits.

The invention relates to a high-strength bonding anti-cracking asphalt pavement covering structure based on asphalt activity excitation and a construction method of the high-strength bonding anti-cracking asphalt pavement covering structure, and belongs to the technical field of road engineering. The invention discloses a high-strength bonding anti-cracking asphalt pavement covering structure based on asphalt activity excitation. The high-strength bonding anti-cracking asphalt pavement covering structure sequentially comprises a finish milling treatment layer, a high-permeability modified waterproof bonding layer, a rubber asphalt stress absorption sealing layer and a high-performance overlay layer from bottom to top. The invention innovatively provides a three-in-one collaborative technical route of'interface activation-stress buffering-structure paving ', and is not locally improved by a single material or a working procedure; the core problems of weak interlayer bonding, frequent reflection cracks, interface performance attenuation and the like in the traditional overlay technology are systematically solved through a layer-by-layer progressive design of a finish-milling treatment layer, an interface activation interface of a high-permeability modified waterproof bonding layer, stress digestion of a rubber asphalt stress absorption sealing layer and a high-performance overlay strengthening structure; and the overall stability of the composite pavement is improved structurally and essentially.

This invention discloses a non-full-thickness cement pavement overlay material and its construction process. The non-full-thickness cement pavement overlay material is composed of basalt, shape memory particles, limestone powder, and high-elasticity modified asphalt. It can improve the crack resistance of the stress-absorbing layer, delay longitudinal reflective cracking, and extend the service life of the pavement. The construction process involves fine milling the cement pavement to create grooves on the surface; uniformly applying a high-strength interlayer adhesive across the entire pavement; then, spreading the non-full-thickness cement pavement overlay material on top of the high-strength interlayer adhesive as a stress-absorbing layer. This pavement structure can reduce the consumption of building materials such as stone and asphalt by approximately 30%, resulting in significant environmental and economic benefits. Finally, after the non-full-thickness cement pavement overlay material is constructed, a 4-5cm thick wearing layer is applied on top, effectively enhancing the surface wear resistance, extending the service life of the pavement, and improving driving comfort and safety.

The utility model relates to the technical field of road structures, in particular to a white-to-black overlay structure, which comprises an asphalt layer consisting of a water-based epoxy asphalt waterproof anti-crack layer, a second-order resin asphalt bonding layer and a super-viscous and tough epoxy asphalt surface layer, the water-based epoxy asphalt waterproof anti-crack layer, the second-order resin asphalt bonding layer and the super-viscous and tough epoxy asphalt surface layer are laid on the cement layer from bottom to top; the plurality of glass fiber nets are respectively arranged between the water-based epoxy asphalt waterproof anti-crack layer and the cement layer and among the water-based epoxy asphalt waterproof anti-crack layer, the second-order resin asphalt bonding layer and the super-viscous and tough epoxy asphalt surface layer. In the utility model, the overlay structure has strong bonding force between layers, effectively prevents the peeling condition between the cement board layers, reduces the reflection cracks of the cement base layer, is thinner in the thickness of the whole paving structure layer, reduces the use of stones, saves the construction cost, is low-carbon and environment-friendly, saves energy and reduces emission, and has better economic benefit and environmental benefit.

This invention discloses a composite roadbed structure for shallow marine reclamation areas, relating to the field of land reclamation construction technology, aiming to solve the technical challenges of uneven settlement and reflective cracking in soft soil foundations in these areas. The structure provides rigid support through a pile foundation system embedded in the soft mud layer and innovatively employs support components with elastic restoring functions. Combined with a double-layer geogrid reinforcement and isolation system and a layered transition reinforcement layer, it forms a synergistic load-bearing system that combines rigidity and flexibility. This system effectively disperses loads, absorbs and reduces stress caused by differential settlement, and automatically adjusts its restoring function, thereby significantly suppressing the generation of reflective cracks in the pavement. This invention possesses excellent stability, adaptability, and durability, making it particularly suitable for rapid and efficient road infrastructure construction in shallow marine reclamation areas.