Device for improving compressive bearing capacity of asphalt concrete pavement

Abstract

The utility model provides a device for improving the compressive bearing capacity of an asphalt concrete pavement, and particularly relates to the technical field of road construction. The device is used for being arranged on the surface of the ground to be laid and comprises a plurality of wavy supporting structures, and the multiple supporting structures are spliced side by side through connecting points to form an integral structure; and a plurality of grooves are formed between the curved surfaces of every two adjacent supporting structures. The pavement asphalt concrete pouring device is simple in structure and convenient to install, the rut load resisting capacity of pavement asphalt concrete is greatly improved, meanwhile, the asphalt concrete can fully flow in the device through the holes, and the pouring efficiency of the asphalt concrete is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of road construction, in particular to a device for improving the compressive bearing capacity of an asphalt concrete pavement. Background Art

[0002] Asphalt concrete is widely used in the construction of roads, bridges, and hydraulic structures. With the continuous development of the economy and the increasing volume of transportation, asphalt concrete pavements have gradually begun to experience a series of problems, such as aging and cracking. Related research shows that the formation of localized cracks in asphalt pavements has become a major factor affecting the long-term use of roads. Furthermore, the presence of cracks can easily lead to surface water seeping into the roadbed, causing certain damage to the stability of the pavement structure.

[0003] Rutting is a permanent deformation in the wheel track of a roadway, consisting of depressions in the wheel track and ridges on either side. Rutting seriously impacts the service life and quality of a pavement. The most serious problem is when the asphalt mixture lacks high-temperature stability. Under the influence of wheel loads, the internal material of the asphalt pavement structure flows, causing lateral displacement and forming depressions in the wheel track. Rutting poses numerous hazards to the pavement and road users, severely impacting high-speed driving safety. Vehicles can easily lose control when changing direction, compromising driving stability. Currently, the commonly used preventive technical measures primarily utilize coarser aggregate gradations, but this presents a conflict between rutting resistance and water stability. Coarsening gradations may improve rutting resistance, but it can also lead to segregation and a high residual void content, resulting in water seepage and damage. Utility Model Content

[0004] In order to overcome the above-mentioned deficiencies of the prior art, the present invention provides a device for improving the compressive bearing capacity of asphalt concrete pavement. The specific technical solution is as follows:

[0005] A device for improving the compressive bearing capacity of asphalt concrete pavement is used to be set on the surface of the ground to be paved, including several wavy support structures, which are spliced ​​side by side through several connection points to form an overall structure; several grooves are formed between the curved surfaces of every two adjacent support structures.

[0006] Preferably, a plurality of holes are evenly distributed on the surface of the support structure.

[0007] Preferably, two adjacent support structures are distributed axially symmetrically.

[0008] Also preferably, the support structure has a height of 0.1 m±0.02 m and a thickness of 10 mm±0.2 mm.

[0009] Further preferably, the size of the support structure and the size and number of the holes are determined according to the actual design requirements of the road surface.

[0010] The beneficial effects of the utility model are:

[0011] 1. This new type of structure connects the supporting structure to the road surface, which can reduce the need for disassembly and reassembly of fixtures during construction in extreme weather environments, effectively improving the construction efficiency of projects in extreme weather conditions.

[0012] 2. The utility model evenly distributes a number of equally spaced holes on the surface of the support structure, effectively improving the fluidity and uniformity of the asphalt concrete material between the grooves;

[0013] 3. The support structure of the utility model is added with polyacrylate fiber and nano-silica, which can greatly improve the compressive strength and fire resistance of concrete after pouring;

[0014] 4. The polyacrylate fiber added to the device of the utility model has low permeability, which can effectively isolate water penetration, reduce steel corrosion, and improve the service life and overall stress performance of the road surface;

[0015] 5. This utility model eliminates the need for steel bars required for pouring asphalt concrete by adding an additional support structure to the asphalt concrete, reduces the load on the road lane track, and reduces the occurrence of cracks in the asphalt concrete pavement;

[0016] 6. The utility model has a simple structure and is easy to disassemble and assemble; all components are prefabricated in the factory and can be designed with different sizes and strengths according to the actual design requirements of the project, which greatly reduces the demand for manpower on the construction site. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings that constitute the specification of this application are used to provide further understanding of this application and do not constitute improper limitations on this application.

[0018] Figure 1 This is a schematic diagram of the overall structure of the utility model;

[0019] Figure 2 This is a schematic diagram of pouring asphalt concrete according to the present invention;

[0020] Figure 3 This is a schematic diagram of the utility model as a whole bearing rutting pressure;

[0021] Figure 4 This is a schematic diagram of the process of CO2 absorption by microorganisms in the concrete during asphalt concrete pouring;

[0022] In the figure, 1-groove; 2-hole; 3-support structure; 4-connection point. DETAILED DESCRIPTION

[0023] The specific implementation of a device for improving the compressive bearing capacity of an asphalt concrete pavement provided by the present invention is further described in conjunction with the accompanying drawings and embodiments.

[0024] like Figure 1-3 As shown, a device for improving the compressive bearing capacity of an asphalt concrete pavement is placed on the surface to be paved and includes a plurality of wavy support structures 3, which are connected side by side via connection points 4 to form an integrated structure. (Connection points 4 may be welded, snap-fitted, or otherwise fixed, but the specific connection method is not a limitation of the present invention; any method that ensures connection strength may be used.) Preferably, adjacent support structures 3 are arranged axially symmetrically; a plurality of grooves 1 are formed between the curved surfaces of each pair of adjacent support structures 3.

[0025] Preferably, a plurality of holes 2 are evenly distributed on the surface of each supporting structure 3, so as to enable the asphalt concrete to flow fully between different grooves 1, thereby improving the overall fluidity and uniformity of the concrete.

[0026] In order to increase the supporting force of the supporting structure 3, the supporting structure 3 in the present invention is made of a structure with a certain height and thickness. Specifically, its height range is 0.1m±0.02m, and its thickness range is 10mm±0.2mm, which can be selected according to the actual road conditions.

[0027] Further preferably, all components of the present invention are prefabricated in the factory, and the size of the support structure 3 and the size and number of the holes 2 are set according to the actual design requirements and dimensions of the road surface, which greatly reduces the demand for manpower at the construction site.

[0028] It is worth noting that the support structure 3 of the present invention is made of an oxazolidone ring-containing epoxy resin material composed of toluene diisocyanate, diglycidyl ester, 2-ethyl-4-methylimidazole, nano-silica, and polyacrylate fibers. The polyacrylate fibers and nano-silica significantly improve the concrete's compressive and fire-resistant properties. Furthermore, the polyacrylate fibers have low permeability and liquid absorption capacity, effectively blocking water penetration and reducing steel corrosion. This improves the device's service life and overall load-bearing performance, while also accelerating the solidification of the asphalt concrete slurry.

[0029] The coarse aggregate of the asphalt concrete used for pouring is steel slag and basalt crushed stone; the fine aggregate is limestone machine-made sand and mineral powder; the water is a mixture of Bacillus pasteurianus culture medium and water. The asphalt concrete used for pouring uses microbial concrete combined with MICP technology. The microorganisms in the concrete react with CO2 in the air to produce calcium carbonate, which effectively reduces the CO2 emission during concrete pouring and is more energy-saving and environmentally friendly. Figure 4shown.

[0030] When used, the specific steps include:

[0031] S1. Several curved support structures 3 are connected side by side at several connection points 4 to form an overall structure.

[0032] S2. Place the entire structure on the road surface to be paved and temporarily secure it to the road surface using wooden frames;

[0033] S3. Asphalt concrete is poured into a plurality of grooves 1, and the asphalt concrete flows between the grooves 1 through a plurality of holes 2 on the surface of the support structure 3;

[0034] S4. After pouring is completed, remove the wooden frame and wait for the asphalt concrete to cool and solidify.

[0035] The utility model has a simple structure and is easy to assemble and disassemble. All components are prefabricated in the factory and can be designed with different sizes and strengths according to the actual design requirements of the project, which has better practicality and adaptability.

[0036] The utility model connects the supporting structure with the road surface, which can reduce the disassembly and reinstallation of the fixing device during the construction process in extreme weather environments, effectively improving the construction efficiency of the project in extreme weather conditions;

[0037] The utility model evenly distributes a number of equally spaced holes on the surface of the support structure, effectively improving the fluidity and uniformity of the asphalt concrete material between the grooves;

[0038] More importantly, the present invention can reduce the load on the road lane track, reduce the occurrence of cracks in the asphalt concrete road surface, and improve the service life and overall stress performance of the road surface by adding an additional support structure to the asphalt concrete.

[0039] In the present invention, the directions or positional relationships indicated by terms such as "upper", "lower", "bottom", "top", etc. are based on the directions or positional relationships shown in the accompanying drawings. They are merely relational terms determined for the convenience of describing the structural relationships of the various parts or elements of the present invention. They do not specifically refer to the parts or elements of the present invention and cannot be understood as limitations on the present invention. Terms such as "connected" and "connect" should be understood in a broad sense, indicating that they can be fixedly connected, integrally connected, or detachably connected; they can be directly connected or indirectly connected through an intermediate medium. For relevant scientific research or technical personnel in this field, the specific meanings of the above terms in the present invention can be determined according to specific circumstances, and they cannot be understood as limitations on the present invention.

[0040] Of course, the above description is not a limitation of the present invention, and the present invention is not limited to the above examples. Changes, modifications, additions or substitutions made by technicians in this technical field within the essential scope of the present invention should also fall within the scope of protection of the present invention.

Claims

1. A device for improving the compressive bearing capacity of asphalt concrete pavement, which is arranged on the surface of the ground to be paved, characterized in that: It comprises a plurality of wavy supporting structures, which are connected side by side through a plurality of connection points to form an integral structure; a plurality of grooves are formed between the curved surfaces of every two adjacent supporting structures.

2. The device for improving the compressive bearing capacity of asphalt concrete pavement according to claim 1, characterized in that: A plurality of holes are evenly distributed on the surface of the support structure.

3. The device for improving the compressive bearing capacity of asphalt concrete pavement according to claim 2, characterized in that: The two adjacent support structures are distributed in an axisymmetric manner.

4. The device for improving the compressive bearing capacity of asphalt concrete pavement according to claim 3, characterized in that: The support structure has a height of 0.1 m ± 0.02 m and a thickness of 10 mm ± 0.2 mm.

5. The device for improving the compressive bearing capacity of asphalt concrete pavement according to claim 1, characterized in that: The size of the support structure and the size and number of holes are determined according to the actual design requirements of the road surface.

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