CN219527217U - Composite functional interlayer suitable for heavy-load cement pavement - Google Patents
Composite functional interlayer suitable for heavy-load cement pavement Download PDFInfo
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- CN219527217U CN219527217U CN202320831475.XU CN202320831475U CN219527217U CN 219527217 U CN219527217 U CN 219527217U CN 202320831475 U CN202320831475 U CN 202320831475U CN 219527217 U CN219527217 U CN 219527217U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/60—Planning or developing urban green infrastructure
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Abstract
The utility model discloses a composite functional interlayer suitable for a heavy-load cement pavement, which is positioned between a cement concrete pavement and a water-stable base layer and comprises a lower anti-cracking layer (warp-knitted composite polyester anti-cracking cloth), a stress absorbing layer (thermoplastic polyurethane elastomer TPU), an upper anti-cracking layer (warp-knitted composite polyester anti-cracking cloth) and a waterproof layer (high polymer modified asphalt) from bottom to top. The composite functional interlayer is manufactured in factories, is not influenced by road site construction environment, has uniform and controllable product quality, excellent flexibility, deformation damage prevention after bending, has the functions of stress absorption, seepage resistance, crack resistance and the like, and can prolong the service life of a heavy-duty cement concrete pavement by 20-40%. When in use, the composite functional interlayer is adhered to the water-stable base layer through the oil-adhering layer.
Description
Technical Field
The utility model relates to the technical field of disease control of heavy-load cement pavements.
Background
In the existing design specifications, the service life of the cement concrete pavement is up to 30 years, but according to the service experience of years in China, under the comprehensive influence of factors such as overload of vehicles, poor construction quality and the like, cracks, staggered tables and other damages to different degrees occur to the concrete pavement at early stage, so that rainwater is infiltrated downwards to damage a pavement base layer, and the damage of the base layer aggravates the damage of the surface layer, and the design service life is seriously influenced. In order to prolong the service life of the cement concrete pavement, a functional layer is necessary to be added between the surface layer and the base layer. The pavement material has corresponding regulations on interlayer or sealing materials in the pavement design specification of highway cement concrete, but basically adopts the technical standard of the middle sealing layer of the asphalt pavement, adopts single-layer asphalt surface treatment or film materials and the like, has only impervious effect, has single function and has limited effect on prolonging the service life of the cement concrete pavement. Therefore, the method has great significance in researching the multifunctional interlayer with the functions of stress absorption, impermeability, crack resistance and the like.
Disclosure of Invention
In order to achieve the above purpose, the present utility model adopts the following technical scheme:
the composite functional interlayer suitable for the heavy-load cement pavement is positioned between the cement concrete pavement and the water-stable base layer and comprises a lower anti-cracking layer, a stress absorbing layer, an upper anti-cracking layer and a waterproof layer from bottom to top.
Further, the upper anti-cracking layer and the lower anti-cracking layer are respectively positioned on the upper surface and the lower surface of the stress absorbing layer, and the material is warp-knitted composite polyester anti-cracking cloth.
Further, the stress absorbing layer is a thermoplastic polyurethane elastomer TPU.
Further, the uppermost waterproof layer is high-molecular polymer modified asphalt.
The beneficial effects of the utility model are as follows:
1. the composite functional interlayer is transported to the site after the factory is manufactured, so that the functional interlayer does not need to be manufactured on the construction site, the quality of the composite functional interlayer is not influenced by the construction environment of the road site, and the quality of the product is uniform and controllable.
2. The composite functional interlayer is provided with an upper anti-cracking layer and a lower anti-cracking layer, and the arrangement of the double anti-cracking layers greatly improves the anti-cracking effect of the pavement.
3. The composite functional interlayer stress absorbing layer is thermoplastic polyurethane elastomer TPU, which is a type of elastomer with plasticization molding at high temperature, has good impact resistance and fatigue resistance, and has excellent effect of absorbing stress.
4. The composite functional interlayer consists of a lower anti-cracking layer, a stress absorbing layer, an upper anti-cracking layer and a waterproof layer, has multiple functions of stress absorption, impermeability, cracking resistance and the like, and can prolong the service life of the heavy-duty cement concrete pavement by 20-40%.
5. The composite functional interlayer is convenient to use, and the novel composite functional interlayer is adhered to the water-stable base layer through the oil-adhering layer during use.
Drawings
Fig. 1 is a schematic structural view of a composite functional interlayer suitable for heavy-duty cement pavement according to the present utility model.
1 is a lower anti-cracking layer made of warp-knitted composite polyester anti-cracking cloth;
2 is a stress absorbing layer, and the material is thermoplastic polyurethane elastomer TPU;
3 is an upper anti-cracking layer made of warp-knitted composite polyester anti-cracking cloth;
4 is a waterproof layer, and the material is high-molecular polymer modified asphalt;
5 is a water stable base layer;
and 6 is a cement concrete surface layer.
Detailed Description
The present utility model will be described in further detail with reference to the accompanying drawings.
As shown in figure 1, the composite functional interlayer consists of a lower anti-cracking layer 1 (warp-knitted composite polyester anti-cracking cloth), a stress absorbing layer 2 (thermoplastic polyurethane elastomer TPU), an upper anti-cracking layer 3 (warp-knitted composite polyester anti-cracking cloth) and a waterproof layer 4 (high polymer modified asphalt) from bottom to top.
As shown in figure 1, the thickness of the composite functional interlayer stress absorbing layer 2 is 4mm, the thickness of the waterproof layer 4 is 1mm, and the lower anti-cracking layer 1 and the upper anti-cracking layer 3 are made of finished warp-knitted composite polyester anti-cracking cloth.
As shown in figure 1, the composite functional interlayer is manufactured by a factory, has excellent flexibility and can not be deformed and damaged during bending. When in use, the composite functional interlayer is adhered to the water-stable base layer through the oil-adhering layer.
The above embodiments are merely advantageous, characteristic and basic principle of the present utility model, it should be understood that the present utility model is not limited to the above embodiments, and that new variations and modifications may be made without departing from the scope of the present utility model.
The technology, shape, and construction parts of the present utility model, which are not described in detail, are known in the art.
Claims (6)
1. Composite functional interlayer suitable for heavy load cement pavement is located between cement concrete surface course and the steady basic unit of water, its characterized in that: the anti-cracking waterproof layer comprises a lower anti-cracking layer, a stress absorbing layer, an upper anti-cracking layer and a waterproof layer from bottom to top.
2. A composite functional interlayer suitable for heavy-duty cement pavements as claimed in claim 1, wherein: the lower anti-cracking layer is warp-knitted composite polyester anti-cracking cloth and is positioned on the lower surface of the stress absorbing layer.
3. A composite functional interlayer suitable for heavy-duty cement pavements as claimed in claim 1, wherein: the stress absorbing layer is a thermoplastic polyurethane elastomer TPU.
4. A composite functional interlayer suitable for heavy-duty cement pavements as claimed in claim 1, wherein: the upper anti-cracking layer is warp-knitted composite polyester anti-cracking cloth and is positioned on the upper surface of the stress absorbing layer.
5. A composite functional interlayer suitable for heavy-duty cement pavements as claimed in claim 1, wherein: the waterproof layer is high-molecular polymer modified asphalt.
6. A composite functional interlayer suitable for heavy-duty cement pavements as claimed in claim 1, wherein: the composite functional interlayer is manufactured in a factory, and is bonded with the water-stable base layer through an adhesive oil layer when in use.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320831475.XU CN219527217U (en) | 2023-04-14 | 2023-04-14 | Composite functional interlayer suitable for heavy-load cement pavement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320831475.XU CN219527217U (en) | 2023-04-14 | 2023-04-14 | Composite functional interlayer suitable for heavy-load cement pavement |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219527217U true CN219527217U (en) | 2023-08-15 |
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ID=87626969
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320831475.XU Active CN219527217U (en) | 2023-04-14 | 2023-04-14 | Composite functional interlayer suitable for heavy-load cement pavement |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219527217U (en) |
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2023
- 2023-04-14 CN CN202320831475.XU patent/CN219527217U/en active Active
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