CN218711891U - Water-based flexible base pavement structure in rainy area - Google Patents
Water-based flexible base pavement structure in rainy area Download PDFInfo
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- CN218711891U CN218711891U CN202221244404.1U CN202221244404U CN218711891U CN 218711891 U CN218711891 U CN 218711891U CN 202221244404 U CN202221244404 U CN 202221244404U CN 218711891 U CN218711891 U CN 218711891U
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Abstract
The utility model discloses a flexible basic unit pavement structure of rainy area water base, including road surface basic unit, road surface course, road surface basic unit is located the road surface course below, road surface course is from last to being asphalt concrete surface course, water base polymer rubble basic unit, graded broken stone subbase and aggregate bed course down in proper order. The utility model discloses in, replace traditional semi-rigid basic unit through setting up water base polymer rubble basic unit, item cost and cost are practiced thrift to attenuate asphalt concrete layer thickness, and through setting up the graded broken stone subbase, effective discharge surface ponding is particularly useful for rainy area.
Description
Technical Field
The utility model relates to a road surface construction technical field especially relates to a water-based flexible basic unit pavement structure in rainy area.
Background
From the eighties of the twentieth century, the stable semi-rigid base asphalt pavement of the inorganic binder becomes the main pavement structure form of roads of various grades in China. Engineering practical investigation shows that the asphalt pavement generally has early damage phenomena such as cracking, rutting, water damage and the like, and is difficult to adapt to the technical requirements of long-life pavement of heavy traffic. At present, on the basis of referring to a typical structure of a foreign heavy-duty traffic asphalt pavement, the application research of the flexible base asphalt pavement is generally recognized and valued in China, but most of the situations are still limited to the adoption of graded macadam and asphalt macadam as base materials, and the research and development of low-dose cement-stabilized macadam are also considered, but the base materials are restricted from being generally popularized in engineering practice due to high requirements on materials and processes and economic reasons.
The research and development and application of the water-based polymer stable material flexible base layer technology aim at solving the problems that the road construction and maintenance cost is continuously increased in the road construction and maintenance process in China, the road is seriously damaged by rapidly increased traffic and overloaded vehicles, the service life of the road is greatly reduced and the like; and traffic pressure caused by frequent and long-time construction and maintenance of the broken circuit construction. With the emphasis on environmental protection in China, the use of road building materials such as asphalt, cement, lime, gravel and the like is controlled, the price of the materials is continuously increased, and the requirements on storage and transportation are higher and higher, and the road construction of environmental protection and sustainable development emphasizes a construction technical method which is suitable for local conditions and simple and rapid, and a water-based polymer stable material is used as a flexible base layer, so that the performance indexes related to the road structure can be achieved, the cost is superior to that of the conventional hot-mix hot-laid asphalt pavement, and the resource utilization and environmental protection are facilitated. The method effectively solves the problems of increasingly expensive and deficient asphalt resources, avoids the problems of diseases such as road cracking, rutting and the like, effectively reduces the problem of carbon emission in the road construction process, and has important significance for improving the road quality and prolonging the service life. Therefore, how to select a proper pavement structure is very important, the service performance of the pavement is effectively improved, energy is saved, the environment is protected, and huge social and environmental benefits are generated; meanwhile, the method has important significance for perfecting the engineering management work of highway reconstruction and extension and improving the highway maintenance and construction management level, and can effectively promote the technical progress of highway reconstruction and extension.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a water base flexible basic unit pavement structure in rainy area to solve the problem that proposes in the above-mentioned background art.
In order to achieve the above purpose, the utility model provides a following technical scheme:
the water-based flexible base layer pavement structure comprises a pavement base layer and a pavement surface layer, wherein the pavement base layer is positioned below the pavement surface layer, and the pavement surface layer sequentially comprises an asphalt concrete surface layer, a water-based polymer macadam base layer, a graded macadam subbase layer and a granule cushion layer from top to bottom.
The utility model discloses a further technique:
preferably, the thickness of the asphalt concrete surface layer is 5 cm-15 cm, the thickness of the water-based polymer macadam foundation layer is 15 cm-30 cm, and the thickness of the graded macadam subbase layer is 15 cm-30 cm.
Preferably, the water-based polymer macadam foundation layer is provided with one false seam every 50m, the seam width is 1cm, and the top surface of the false seam is pasted with a 0.5-1m wide anti-crack paste.
The utility model discloses following technological effect has:
the utility model discloses in, replace traditional semi-rigid basic unit through setting up water base polymer rubble basic unit, attenuate asphalt concrete layer thickness practices thrift project cost and cost.
The water-based polymer macadam base course cuts the false joint, the top surface of the false joint is pasted with the wide anti-crack paste, and early diseases such as pavement cracks caused by reflection of the base course cracks to the pavement are effectively avoided.
Through setting up graded rubble subbase, effectively discharge surface ponding, be particularly useful for rainy area.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts;
fig. 1 is a schematic structural view of the present invention;
wherein: 1-asphalt concrete surface course, 2-crack resistant paste, 3-water-based polymer macadam base course, 4-graded macadam base course, 5-aggregate cushion course or inorganic binder improvement course, and 6-pavement base course.
Detailed Description
To make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the embodiments of the present invention are combined to clearly and completely describe the technical solution in the embodiments of the present invention, and obviously, the described embodiments are some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
Referring to fig. 1, in one embodiment, the water-based flexible base pavement structure for rainy areas comprises a base pavement layer 6 and a pavement surface layer, wherein the base pavement layer is positioned below the pavement surface layer; the pavement surface layer comprises an asphalt concrete surface layer 1, a water-based polymer macadam base layer 3, a graded macadam subbase layer 4 and a granular cushion layer 5 from top to bottom in sequence, wherein the granular cushion layer can also adopt an inorganic binder improving layer.
The thickness of the asphalt concrete surface layer is 5 cm-15 cm, the water-based polymer macadam base layer is 15 cm-30 cm, and the graded macadam subbase layer is 15 cm-30 cm.
The water-based polymer macadam foundation layer is provided with one false seam every 50m, the seam width and seam depth are respectively 1cm, and the top surface of the false seam is pasted with 0.5-1m wide anti-cracking paste 2.
It should be noted that the recycled asphalt concrete surface layer described in this embodiment is plant-mixed hot recycled asphalt concrete, and the mixing amount of recycled old materials (RAP) is 30% to 50%.
By arranging the recycled asphalt concrete surface layer, the waste asphalt concrete of the pavement is fully utilized, the limit of 30 percent of the mixing amount of the waste materials of the common recycled asphalt concrete is broken through, resources are saved, and the environment is protected.
The water-based polymer gravel base course consists of water-based polymer, water, cement, coarse aggregate and fine aggregate;
the components specifically include water-based polymers: 0.4-0.8 part of cement: 3-10 parts of water: 10-25 parts of coarse aggregate and fine aggregate: 60-85 parts.
Wherein the water-based polymer should meet the following material requirements:
it should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising a … …" does not exclude the presence of another identical element in a process, method, article, or apparatus that comprises the element.
In the present invention, unless explicitly specified or limited, features are not necessarily present independently, but are interleaved with each other. The foregoing shows and describes the principles, essential features, and advantages of the invention. It should be understood by those skilled in the art that the present invention is not limited to the above-mentioned embodiments, and the above-mentioned embodiments and the description are only preferred examples of the present invention, and are not intended to limit the present invention, so as to become the only choice. The utility model discloses under the spirit and the scope requirement of utility model, the utility model discloses still can further change and optimize, right the utility model discloses the improvement optimization that goes on all gets into the utility model that claims, the utility model discloses claim the specific scope and be defined by attached claim and equivalent.
Claims (3)
1. The utility model provides a water-based flexible basic unit pavement structure in rainy area which characterized in that: the road surface base layer is positioned below the road surface layer, and the road surface layer sequentially comprises an asphalt concrete surface layer, a water-based polymer macadam base layer, a graded macadam subbase layer and an aggregate cushion layer from top to bottom.
2. The stormwater waterborne flexible substrate pavement structure of claim 1, further comprising: the thickness of the asphalt concrete surface layer is 5 cm-15 cm, the water-based polymer macadam base layer is 15 cm-30 cm, and the graded macadam subbase layer is 15 cm-30 cm.
3. A stormwater water-based flexible base pavement structure as claimed in claim 1, wherein: the water-based polymer macadam foundation layer is provided with one false seam every 50m, the seam width and seam depth are respectively 1cm, and the top surface of the false seam is pasted with 0.5-1m wide anti-cracking paste.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221244404.1U CN218711891U (en) | 2022-05-23 | 2022-05-23 | Water-based flexible base pavement structure in rainy area |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221244404.1U CN218711891U (en) | 2022-05-23 | 2022-05-23 | Water-based flexible base pavement structure in rainy area |
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| Publication Number | Publication Date |
|---|---|
| CN218711891U true CN218711891U (en) | 2023-03-24 |
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| CN202221244404.1U Active CN218711891U (en) | 2022-05-23 | 2022-05-23 | Water-based flexible base pavement structure in rainy area |
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| CN (1) | CN218711891U (en) |
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2022
- 2022-05-23 CN CN202221244404.1U patent/CN218711891U/en active Active
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