White-to-black pavement reconstruction method for urban municipal roads

Abstract

The present invention provides a method for reconstructing a white-to-black pavement of an urban municipal road, which belongs to the technical field of pavement reinforcement, and includes: measuring the surface shape of a cement concrete layer, and reinforcing the deformed portion. The surface of the cement concrete layer is treated, and an asphalt adhesive is sprayed during the treatment process. A first layer of asphalt concrete is laid during the spraying of the asphalt adhesive. During the laying of the second layer of asphalt concrete, a reinforcing agent for improving the structural strength of the asphalt concrete is injected into the grid. After the second layer of asphalt concrete is compacted, the reinforcing agent is squeezed and spread out, thereby strengthening the asphalt concrete layer and dividing it into a plurality of blocks; the generation of cracks is reduced by the blocks and the extension of cracks is prevented. The method for reconstructing a white-to-black pavement of an urban municipal road provided by the present invention reduces the probability of crack generation on the one hand, and avoids the extension of cracks on the other hand, thereby reducing the failure rate and ensuring the service life.

Description

Technical Field

[0001] The invention belongs to the technical field of pavement reinforcement, and more specifically relates to a method for reconstructing white-to-black pavement of urban municipal roads. Background Art

[0002] White-and-black pavement is made of cement concrete as the lower layer and asphalt concrete as the upper layer, that is, an asphalt layer is laid on the cement concrete surface layer. Generally speaking, the cement concrete of the lower layer can be ordinary concrete, lean concrete, roller-compacted concrete, porous concrete, etc. In addition, to improve the performance of old cement concrete pavement, an asphalt concrete layer is laid on the old pavement layer, which is also considered a composite pavement. The traditional white-and-black asphalt concrete pavement structure is to lay an emulsified asphalt bonding layer after milling and roughening the surface defects of the original cement concrete pavement, and then lay a medium-grained asphalt concrete layer on the surface of the emulsified asphalt bonding layer, and then lay an emulsified asphalt bonding layer on the surface of the medium-grained asphalt concrete layer, and finally lay a fine-grained asphalt concrete surface layer on the surface of the emulsified asphalt bonding layer.

[0003] However, in actual application, it was found that the current white-to-black road surface is prone to cracks in the asphalt concrete layer due to the low structural strength of the asphalt concrete itself, and the above cracks will extend on the asphalt concrete layer, resulting in low project quality, short life, and high project repair rate. Summary of the Invention

[0004] The purpose of the present invention is to provide a method for reconstructing the white-to-black pavement of urban municipal roads, aiming to solve the problem that cracks easily appear in the asphalt concrete layer and the above cracks will extend on the asphalt concrete layer.

[0005] To achieve the above object, the technical solution adopted by the present invention is to provide a method for reconstructing the white-to-black road surface of an urban municipal road, comprising:

[0006] Measuring the surface shape of the cement concrete layer, determining a deformed portion in the cement concrete layer according to the measurement result, and reinforcing the deformed portion;

[0007] Treating the surface of the cement concrete layer, spraying asphalt adhesive during the treatment process;

[0008] Laying a first layer of asphalt concrete during the spraying of the asphalt binder, and spreading a grid on the first layer of asphalt concrete during the laying of the first layer of asphalt concrete;

[0009] During the laying of the second layer of asphalt concrete, a reinforcing agent for improving the structural strength of the asphalt concrete is injected into the grid, and the reinforcing agent flows out through a plurality of glue outlets provided on the grid;

[0010] After the second layer of asphalt concrete is compacted, the reinforcing agent is squeezed and spread out to strengthen the asphalt concrete layer and divide it into a plurality of blocks; the blocks reduce the generation of cracks and prevent the extension of cracks.

[0011] In a possible implementation, determining the deformed portion in the cement concrete layer according to the measurement result includes:

[0012] Defining the portion of the cement concrete layer that is tilted, cracked, sunken, or bulged as the deformed portion;

[0013] The distribution range and area occupied by the deformed portion are determined.

[0014] In a possible implementation, determining the deformed portion in the cement concrete layer according to the measurement result includes:

[0015] The cement concrete layer consists of a main body part and the deformed part;

[0016] When the failure type and degree of the deformed portion are both serious, the anchor rods are reinforced and leveled; or, only the leveling is performed.

[0017] In a possible implementation, determining the deformed portion in the cement concrete layer according to the measurement result and reinforcing the deformed portion includes:

[0018] Reasonably distribute the density of the anchor rod construction to avoid the anchor rods being too dense or too loose;

[0019] The construction position of the anchor rod is marked on the cement concrete layer.

[0020] In a possible implementation, treating the surface of the cement concrete layer, and spraying the asphalt adhesive during the treatment process includes:

[0021] The cement concrete layer is cleaned and removed of impurities; and the asphalt adhesive is sprayed immediately after the cleaning is completed.

[0022] In a possible implementation, the grid includes a plurality of pipes arranged horizontally and vertically, and the plurality of pipes are connected in sequence; and a plurality of glue outlets are provided along the length direction of the pipes.

[0023] In a possible implementation, the grid is provided with a plurality of through holes, and the through holes are formed by surrounding a plurality of adjacent pipes; a reinforcing mesh is fixed in the through holes, and the reinforcing mesh is used to improve the bearing capacity and structural stability of the asphalt concrete.

[0024] In a possible implementation, laying a grid on the first layer of asphalt concrete during the laying of the first layer of asphalt concrete includes:

[0025] An adhesive is sprayed on the reinforcing mesh, and the adhesive is used to improve the bonding strength between the reinforcing mesh and the first layer of asphalt concrete and the second layer of asphalt concrete.

[0026] In a possible implementation, during the process of laying the second layer of asphalt concrete, injecting a reinforcing agent for improving the structural strength of the asphalt concrete into the grid includes:

[0027] The paving of the second layer of asphalt concrete is carried out after the paving of the first layer of asphalt concrete and at the same time;

[0028] Before the second layer of asphalt concrete contacts the grid, the reinforcing agent is injected into the grid and made to flow out from the glue outlet.

[0029] In a possible implementation, after the reinforcing agent flows out through the plurality of glue outlets provided on the grid, the method further includes:

[0030] Injecting a certain amount of curing agent into the grid so that the curing agent fills the grid;

[0031] The solidified curing agent forms a structure in the grid that supports and reinforces the asphalt concrete.

[0032] The method for reconstructing a white-to-black pavement on an urban municipal road provided by the present invention has the following beneficial effects: Compared with the prior art, the method first measures the surface of the cement concrete layer, identifies deformed areas based on the measurement results, then reinforces the deformed areas, and sprays asphalt adhesive after the treatment is complete. Furthermore, while spraying the asphalt adhesive, a first layer of asphalt concrete is laid, and a grid is simultaneously laid on top of the first layer of asphalt concrete. During the laying of the second layer of asphalt concrete, a reinforcing agent is injected into the grid, and the injected reinforcing agent flows out through multiple adhesive outlets. During the compaction of the second layer of asphalt concrete, the reinforcing agent is squeezed and spread, thereby dividing the resulting asphalt concrete layer into multiple blocks.

[0033] In this application, the grid and reinforcing agent can play a certain strengthening role on the asphalt concrete layer, and since the entire asphalt concrete layer is divided into multiple blocks, the above setting reduces the probability of cracks on the one hand, and on the other hand, since there are reinforcing agents between the blocks, the extension of cracks is avoided, the failure rate is reduced, and the service life is guaranteed. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0035] Figure 1 The invention provides a method for transforming the white-to-black pavement of urban municipal roads. DETAILED DESCRIPTION

[0036] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0037] See also Figure 1 The white-black pavement reconstruction method for urban municipal roads provided by the present invention is now described. The white-black pavement reconstruction method for urban municipal roads comprises:

[0038] The surface shape of the cement concrete layer is measured, and the deformed portion in the cement concrete layer is determined based on the measurement result, and the deformed portion is reinforced.

[0039] The surface of the cement concrete layer is treated and asphalt adhesive is sprayed during the treatment process.

[0040] The first layer of asphalt concrete is laid during the spraying of the asphalt binder, and the grid is spread on the first layer of asphalt concrete during the laying of the first layer of asphalt concrete.

[0041] During the process of laying the second layer of asphalt concrete, a reinforcing agent for improving the structural strength of the asphalt concrete is injected into the grid, and the reinforcing agent flows out through multiple glue outlets opened on the grid.

[0042] After the second layer of asphalt concrete is compacted, the reinforcing agent is squeezed and spread out to strengthen the asphalt concrete layer and divide it into multiple blocks; the blocks reduce the occurrence of cracks and prevent the extension of cracks.

[0043] The method for reconstructing a white-to-black pavement on an urban municipal road provided by the present invention has the following beneficial effects: Compared with the prior art, the method first measures the surface of the cement concrete layer, identifies deformed areas based on the measurement results, then reinforces the deformed areas, and sprays asphalt adhesive after the treatment is complete. Furthermore, while spraying the asphalt adhesive, a first layer of asphalt concrete is laid, and a grid is simultaneously laid on top of the first layer of asphalt concrete. During the laying of the second layer of asphalt concrete, a reinforcing agent is injected into the grid, and the injected reinforcing agent flows out through multiple adhesive outlets. During the compaction of the second layer of asphalt concrete, the reinforcing agent is squeezed and spread, thereby dividing the resulting asphalt concrete layer into multiple blocks.

[0044] In this application, the grid and reinforcing agent can play a certain strengthening role on the asphalt concrete layer, and since the entire asphalt concrete layer is divided into multiple blocks, the above setting reduces the probability of cracks on the one hand, and on the other hand, since there are reinforcing agents between the blocks, the extension of cracks is avoided, the failure rate is reduced, and the service life is guaranteed.

[0045] In the past, roads were built with concrete pavements. Later, when the road needed to be renovated, the top surface of the concrete pavement was covered with asphalt concrete before continuing to traffic, known as a white-on-black pavement. During highway expansion, the new and old pavement structural layers needed to be spliced ​​together.

[0046] Cement concrete pavement is a road surface with cement concrete slabs as the surface layer, with a base layer and a cushion layer underneath. It is a rigid pavement and is the most widely used pavement structure in my country's current highways and urban roads. Cement concrete pavement has poor resistance to rainwater and relatively poor resistance to overload, which causes uneven settlement of the road surface and a decrease in the flatness of the road surface. The later maintenance of cement concrete pavement is time-consuming and labor-intensive, and requires a large amount of capital investment, which is particularly important for the transformation of cement concrete. White-and-black pavement is a layer of asphalt concrete pavement laid on the existing cement concrete pavement, which can not only avoid the waste of resources caused by excavation of the old pavement, but also improve the pavement's anti-skid, noise reduction, waterproof and other performance. The existing white-and-black pavement is improperly treated to transform the original cement concrete pavement, which can easily cause the expansion of cracks. In addition, the laid asphalt concrete pavement has low strength and is prone to reflective cracks.

[0047] Cement concrete pavement (cement concrete road) refers to a road surface with cement concrete as the primary material. It is also referred to as concrete pavement, rigid pavement, and commonly known as white pavement. Cement concrete pavement can be of various types, including plain concrete, reinforced concrete, continuously reinforced concrete, and prestressed concrete.

[0048] Since the founding of the People's Republic of China, a large number of cement concrete roads have been built in my country, and most of them have been repaired with the white-on-black method after being damaged.

[0049] In this application, the asphalt concrete layer is divided into multiple sequentially arranged blocks using reinforcing agents. This arrangement prevents the generation and spread of cracks and reduces their length. The reinforcing mesh effectively increases the structural strength of the asphalt concrete layer and improves its ability to resist impact.

[0050] In some embodiments of the white-to-black pavement reconstruction method for urban municipal roads provided in this application, determining the deformed portion in the cement concrete layer according to the measurement results includes:

[0051] The part of the cement concrete layer that is tilted, cracked, sunken, or bulged is defined as the deformed part;

[0052] Determine the distribution range of the deformed part and the area it occupies.

[0053] Causes of cracking in old, conventional concrete pavements include uneven settlement, uneven stress distribution, low structural strength, and changes in the ground. If the cement concrete layer is left untreated, even if an asphalt concrete layer is laid on top, due to its relatively low hardness, it will develop deformation, cracks, and fractures over time, requiring time-consuming and labor-intensive repairs.

[0054] In order to solve the above problems, this application first needs to reinforce the position of the cement concrete layer, that is, to strengthen its relative stability with the underlying base and stratum, because only in this way can the service life of the laid asphalt concrete layer be guaranteed and the number of maintenance times be reduced.

[0055] Of course, removing the old cement concrete layer, that is, re-paving the road surface will inevitably increase the service life of the entire road, but the cost of the corresponding project is high and affects normal production and life.

[0056] In some embodiments of the white-to-black pavement reconstruction method for urban municipal roads provided in this application, determining the deformed portion in the cement concrete layer according to the measurement results includes:

[0057] The cement concrete layer consists of a main part and a deformation part.

[0058] When the type and degree of failure of the deformed part are both serious, the anchor rods are reinforced and leveled; or, only leveling is performed.

[0059] In order to improve the stability and supporting capacity of the cement concrete layer, in the present application, multiple anchor rods can be constructed on the cement concrete layer, that is, the stability between the cement concrete layer and the underlying stratum can be strengthened by multiple anchor rods.

[0060] However, it should be pointed out that if multiple anchor rods are evenly constructed on the entire cement concrete layer, the above method will improve the stability of the entire structure, but the corresponding construction cost will be higher. More importantly, when the area of ​​the road to be renovated is large, it will take a long time, affecting normal production and life.

[0061] To this end, this application requires measuring the shape and structure of the entire road surface. A specific real-time example is to first determine the main part and the deformed part of the entire road surface. The main part is the part without cracks and deformations, while the deformed part is the part with depressions or protrusions. After determining the above situation, it is necessary to determine the position, region, area and inclination angle of the deformed part. Because the entire road surface is horizontal when the construction is just completed, after a period of use, the main part has not changed significantly, while the deformed part has cracks and tilts due to insufficient support force. After determining the situation of the entire main part and the deformed part, the construction of the anchor rod can be carried out.

[0062] In some embodiments of the white-to-black pavement reconstruction method for urban municipal roads provided in this application, determining the deformed portion in the cement concrete layer based on the measurement results and reinforcing the deformed portion includes:

[0063] Reasonably distribute the density of anchor construction to avoid anchors being too dense or too loose.

[0064] Mark the construction position of the anchor rod on the cement concrete layer.

[0065] First, the deformation indicates that the bearing capacity of the location exceeds the maximum acceptable value of the cement concrete layer. The above reasons are insufficient structural strength or insufficient support from below, or excessive traffic above, which causes the fatigue limit of the material to be exceeded. Regardless of the reason, the area needs to be strengthened. For this reason, multiple anchors are installed in this area, which means that the density of anchors in this area is high. At the same time, the area needs to be re-injected with concrete or other materials to fill the pits.

[0066] For the area in the deformed part where only tilting occurs, it is necessary to determine the lower position of the area and set the anchor rod at the lower position of the deformed part, because the lowest position of this area indicates that the ability of this area to resist external forces is weak, which will cause subsidence.

[0067] Ultimately, the positions of all anchor rods need to be planned to avoid excessive density, and it is also necessary to ensure that there are at least anchor rods within a certain detection area. The detection area can be a square, and the area of ​​the square depends on the traffic flow above.

[0068] In some embodiments of the white-to-black pavement reconstruction method for urban municipal roads provided in this application, the surface of the cement concrete layer is treated, and the asphalt adhesive is sprayed during the treatment process, including:

[0069] The cement concrete layer is cleaned and removed; after cleaning, the asphalt adhesive is sprayed.

[0070] It should be pointed out that the anchor rod in the present application is relatively short in length and relatively small in diameter. The above-mentioned arrangement can improve the construction efficiency of a single anchor rod.

[0071] In order to improve processing efficiency, the construction of anchor rods needs to be carried out from one side of the road surface to the other. The construction of anchor rods can be carried out by multiple people at the same time. More importantly, the road surface should be processed at the same time during the anchor rod construction process.

[0072] The road surface is cleaned by a cleaning machine. A roller brush is installed at the front of the machine to remove impurities through its rotation. Suction nozzles are installed on the front and rear sides of the roller brush to absorb dust and impurities. After the impurities are absorbed, the water spray head at the rear sprays cleaning fluid to further clean the road surface.

[0073] In some embodiments of the method for reconstructing the white-to-black pavement of urban municipal roads provided in the present application, the grid includes a plurality of pipes arranged horizontally and vertically, and the plurality of pipes are connected in sequence; and a plurality of glue outlets are opened along the length direction of the pipes.

[0074] After the road surface is cleaned, a grid needs to be laid. Multiple glue outlets are opened along the length of the grid side wall, and the grid is composed of multiple horizontal and vertical pipes, that is, the grid is connected by multiple horizontal and vertical pipes.

[0075] If the pipes are interconnected, it will be difficult to discharge the strengthening agent smoothly, and the flow direction of the strengthening agent cannot be effectively controlled. Therefore, multiple barrier strips are installed along the length of the grid. The barrier strips divide the grid into multiple conveying strips, and the strengthening agent can only flow within one conveying strip and cannot flow into another.

[0076] After the grid is laid, a reinforcing agent is injected into the inner cavity of the grid through the glue injection port at the end of the grid. It should be pointed out that asphalt concrete is usually laid in two steps. In some special cases, if the grid is laid after the asphalt concrete has been laid once, the asphalt concrete below has been preliminarily squeezed, which may eventually lead to poor penetration of the reinforcing agent and a smaller range of penetration into the asphalt concrete. In view of the above situation, the grid can be laid immediately during the asphalt concrete laying process, that is, the grid is unwound and the asphalt concrete is laid at the same time. At this time, the reinforcing agent in the grid is discharged before it comes into contact with the asphalt concrete, and then mixed with the asphalt concrete that has just been dropped. After mixing, subsequent preliminary compaction can be carried out.

[0077] In some embodiments of the white-to-black pavement reconstruction method for urban municipal roads provided in the present application, a plurality of through holes are provided on the grid, and the through holes are formed by surrounding a plurality of adjacent pipes; a reinforcing mesh is fixed in the through holes, and the reinforcing mesh is used to improve the bearing capacity and structural stability of the asphalt concrete.

[0078] In order to improve the ability of asphalt concrete to resist impact, first, the grid is connected by horizontal and vertical pipes, so a plurality of through holes are provided on the grid, and a reinforcing mesh is provided in the through holes formed on the grid, that is, the reinforcing mesh is directly positioned on the grid.

[0079] In actual application, after the grid is laid, the reinforcing mesh will also be laid on the asphalt concrete. When the asphalt concrete is laid again, the reinforcing mesh can be used as a component to improve the asphalt concrete.

[0080] In some embodiments of the method for reconstructing a white-to-black pavement of an urban municipal road provided in the present application, laying a grid on the first layer of asphalt concrete during the laying of the first layer of asphalt concrete includes:

[0081] An adhesive is sprayed on the reinforcing mesh, and the adhesive is used to improve the bonding strength between the reinforcing mesh and the first layer of asphalt concrete and the second layer of asphalt concrete.

[0082] This arrangement can avoid the problem of delamination between the first and second layers of asphalt concrete due to the presence of the reinforcement mesh, which can reduce bearing capacity. This is because smaller mesh pores can lead to significant delamination, while larger mesh pores can reduce the reinforcement effect. Spraying an adhesive can significantly address this problem.

[0083] In some embodiments of the white-on-black pavement reconstruction method for urban municipal roads provided in this application, during the laying of the second layer of asphalt concrete, a reinforcing agent for improving the structural strength of the asphalt concrete is injected into the grid, including:

[0084] The laying of the second layer of asphalt concrete is carried out behind and simultaneously with the laying of the first layer of asphalt concrete.

[0085] Before the second layer of asphalt concrete contacts the grid, a reinforcing agent is injected into the grid and made to flow out from the glue outlet.

[0086] The grid is made up of multiple interconnected pipes, which form crisscross channels inside the grid. When the reinforcing agent is input into the pipe, the reinforcing agent will flow in the crisscross channels. And because there are multiple glue outlets on the side wall of the grid, the reinforcing agent will flow out from the glue outlet during the flow in the pipe, thereby coming into contact with the asphalt concrete.

[0087] In actual operation, after the cement concrete pavement surface is cleaned, an emulsified asphalt binder is applied, and then the first layer of asphalt concrete is laid. After the asphalt concrete is initially compacted, the grid is laid. To improve construction efficiency, a reinforcing agent is injected at the end of the grid during laying, shortening the time it takes to flow within the channel. While the reinforcing agent is flowing out of the glue outlet, the second layer of asphalt concrete can be laid behind it. This arrangement ensures that the reinforcing agent that has just flowed out of the channel contacts the asphalt concrete on both sides. Once compacted, the reinforcing agent is squeezed and spread out, ultimately forming multiple asphalt concrete grids across the entire road surface.

[0088] In some embodiments of the method for reconstructing a white-to-black pavement of an urban municipal road provided in the present application, after the reinforcing agent flows out through the multiple glue outlets provided on the grid, the method further includes:

[0089] Inject a certain amount of curing agent into the grid so that the curing agent fills the grid.

[0090] The cured curing agent forms a structure that supports and reinforces the asphalt concrete within the grid.

[0091] If the grid is made of metal material, the large area of ​​road reconstruction will seriously restrict the laying speed of the grid. If the grid is made of plastic material, the reinforcing agent will remain inside after laying. The reinforcing agent itself will not solidify, or the hardness will be low after solidification, thus affecting the bearing capacity of the asphalt concrete above.

[0092] Based on the above reasons, in this application, after the reinforcing agent is injected, the curing agent can be input into the grid. That is, after ensuring that a certain amount of reinforcing agent is input, the curing agent can be input into the grid. After the curing agent is cured in the grid, its own hardness is higher, thereby playing a role in supporting the asphalt concrete above.

[0093] It is important to ensure that the curing agent is fully cured before the asphalt concrete is fully compacted, so that it can provide a certain degree of support. Furthermore, the grid itself can also play a certain role in reinforcing the asphalt concrete. In other words, the grid with the curing agent stored inside and the reinforcing mesh together play a role in reinforcing the asphalt concrete.

[0094] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A method for reconstructing a white-to-black road surface in an urban municipal road, characterized in that: include: Measuring the surface shape of the cement concrete layer, determining a deformed portion in the cement concrete layer according to the measurement result, and reinforcing the deformed portion; Treating the surface of the cement concrete layer, spraying asphalt adhesive during the treatment process; Laying a first layer of asphalt concrete during the spraying of the asphalt binder, and spreading a grid on the first layer of asphalt concrete during the laying of the first layer of asphalt concrete; During the laying of the second layer of asphalt concrete, a reinforcing agent for improving the structural strength of the asphalt concrete is injected into the grid, and the reinforcing agent flows out through a plurality of glue outlets provided on the grid; After the second layer of asphalt concrete is compacted, the reinforcing agent is squeezed and spread to strengthen the asphalt concrete layer and divide it into a plurality of blocks; the blocks reduce the generation of cracks and prevent the extension of cracks; The grid includes a plurality of pipes arranged horizontally and vertically, and the plurality of pipes are connected in sequence; and a plurality of glue outlets are opened along the length direction of the pipes; The grid is provided with a plurality of through holes, which are formed by surrounding a plurality of adjacent pipes; a reinforcing mesh is fixed in the through holes, and the reinforcing mesh is used to improve the bearing capacity and structural stability of the asphalt concrete.

2. The method for reconstructing the white-to-black road surface of a municipal road according to claim 1, characterized in that: Determining the deformed portion in the cement concrete layer according to the measurement results includes: Defining the portion of the cement concrete layer that is tilted, cracked, sunken, or bulged as the deformed portion; The distribution range and area occupied by the deformed portion are determined.

3. The method for reconstructing the white-to-black road surface of a municipal road according to claim 2, characterized in that: Determining the deformed portion in the cement concrete layer according to the measurement results includes: The cement concrete layer consists of a main body part and the deformed part; When the failure type and degree of the deformed portion are both serious, the anchor rods are reinforced and leveled; or, only the leveling is performed.

4. The method for reconstructing the white-to-black road surface of a city municipal road according to claim 3, characterized in that: Determining the deformed portion in the cement concrete layer according to the measurement result and reinforcing the deformed portion includes: Reasonably distribute the density of the anchor rod construction to avoid the anchor rods being too dense or too loose; The construction position of the anchor rod is marked on the cement concrete layer.

5. The method for reconstructing the white-to-black road surface of a city municipal road according to claim 1, characterized in that: The surface of the cement concrete layer is treated, and the asphalt adhesive is sprayed during the treatment process, including: The cement concrete layer is cleaned and removed of impurities; and the asphalt adhesive is sprayed immediately after the cleaning is completed.

6. The method for reconstructing the white-to-black road surface of a city municipal road according to claim 1, characterized in that: The step of spreading the grid on the first layer of asphalt concrete during the laying of the first layer of asphalt concrete comprises: An adhesive is sprayed on the reinforcing mesh, and the adhesive is used to improve the bonding strength between the reinforcing mesh and the first layer of asphalt concrete and the second layer of asphalt concrete.

7. The method for reconstructing the white-to-black road surface of a city municipal road according to claim 1, characterized in that: In the process of laying the second layer of asphalt concrete, injecting a reinforcing agent for improving the structural strength of the asphalt concrete into the grid includes: The paving of the second layer of asphalt concrete is carried out after the paving of the first layer of asphalt concrete and at the same time; Before the second layer of asphalt concrete contacts the grid, the reinforcing agent is injected into the grid and made to flow out from the glue outlet.

8. The method for reconstructing the white-to-black road surface of a city municipal road according to claim 1, characterized in that: After the reinforcing agent flows out through the plurality of glue outlets provided on the grid, the method further comprises: Injecting a certain amount of curing agent into the grid so that the curing agent fills the grid; The solidified curing agent forms a structure in the grid that supports and reinforces the asphalt concrete.

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