CN212000443U - Combined type waterborne heat reflection asphalt pavement paving structure - Google Patents
Combined type waterborne heat reflection asphalt pavement paving structure Download PDFInfo
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- CN212000443U CN212000443U CN202020374292.6U CN202020374292U CN212000443U CN 212000443 U CN212000443 U CN 212000443U CN 202020374292 U CN202020374292 U CN 202020374292U CN 212000443 U CN212000443 U CN 212000443U
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Abstract
The utility model discloses a combined type waterborne heat reflection bituminous paving structure, include by lower supreme pitch pavement layer, interface functional layer, waterborne heat reflection dope layer and the anti-skidding grain bed of laying, the interface functional layer is waterborne acrylic acid heat reflection dope layer, waterborne heat reflection dope layer is waterborne polyurethane heat reflection dope layer. The utility model provides a combined type waterborne heat reflection bituminous pavement paving structure effectively reduces trompil, the fracture risk that waterborne polyurethane heat reflection coating layer exists, has improved the adhesive strength of waterborne polyurethane heat reflection coating layer and bituminous pavement, prevents that coating and road surface break away from or pass the phenomenon; and further enhance the heat reflection effect of the asphalt pavement.
Description
Technical Field
The utility model relates to a road engineering technical field, concretely relates to combined type waterborne heat reflection bituminous paving structure.
Background
With the development of economy and society, the road construction industry develops rapidly, and asphalt pavement is widely applied due to the advantages of high flatness, high driving comfort and the like. But at the same time, some problems are gradually exposed, and the asphalt pavement is black in color and luster and has higher solar heat absorption efficiency. Especially under the continuous effect of summer solar thermal radiation, bituminous paving can absorb a large amount of heats, causes bituminous paving temperature to be higher than the temperature far away, causes serious rutting harm, influences road surface service life, and higher road surface temperature still can influence surrounding and atmospheric environment simultaneously, aggravates the heat island effect in city.
In order to reduce the temperature of the pavement and reduce the track diseases of the pavement, the heat reflection coating is spread on the asphalt pavement to be cured on the asphalt pavement to form a heat reflection coating, partial heat is reflected to the atmosphere, and the temperature of the pavement is effectively reduced, so that the track diseases of the pavement are reduced, and the urban heat island effect is relieved. The asphalt pavement heat reflecting material mainly takes resin high molecular material as a film forming substance, heat reflecting filler with high refractive index is added, and the mixture is stirred, prepared and sprayed on the asphalt pavement to form a heat reflecting coating. In the early research of pavement heat reflection materials, an oily heat reflection coating is mainly used, and during construction of the oily heat reflection coating, organic substances (VOC) are highly volatilized, so that the oily heat reflection coating is harmful to human health and has potential safety hazards. In recent years, aqueous heat reflective coatings have begun to replace oil-based resins due to environmental requirements, and are widely used in the field of road pavement. The waterborne polyurethane coating is more researched at present, and has excellent heat reflection performance and wide application prospect. In addition, the waterborne polyurethane heat reflection coating has certain cohesiveness, and the waterborne polyurethane heat reflection coating does not need an additional adhesive layer.
However, since the surface tension of the waterborne polyurethane heat reflection coating is different from that of the asphalt pavement, when the waterborne polyurethane heat reflection coating is directly paved on the asphalt pavement, some defects such as holes and cracks of the heat reflection layer can be generated, and the heat reflection effect is affected. The problems are generally solved, and the problems of hole opening and cracking of the waterborne polyurethane heat reflection coating layer are not solved substantially while the economic cost is increased by additionally laying a plurality of waterborne polyurethane heat reflection layers. In addition, the water-based polyurethane heat reflection coating layer is directly paved on the asphalt pavement, and the phenomenon that the coating is separated from the pavement or moves due to insufficient bonding force of the interface of the asphalt pavement and the heat reflection coating is easy to occur, so that the service performance and the durability of the reflection coating are influenced. If the epoxy resin bonding layer is arranged between the asphalt pavement and the heat reflection coating, the heat reflection layer still has the stripping risk because the cured epoxy resin bonding layer has high brittleness and different surface stress from the waterborne polyurethane heat reflection coating.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problem, the utility model provides a combined type waterborne heat reflection bituminous paving structure, include by lower supreme pitch pavement layer, interface functional layer, waterborne heat reflection dope layer and the anti-skidding grain bed of laying, the interface functional layer is waterborne acrylic acid heat reflection dope layer, waterborne heat reflection dope layer is waterborne polyurethane heat reflection dope layer.
Further, the spreading amount of the waterborne polyurethane heat reflection coating of the waterborne heat reflection coating layer is 0.8-1.2kg/m2The spreading amount of the water-based acrylic paint of the interface functional layer is 0.15-0.3kg/m2。
Further, the solid content of the waterborne polyurethane heat reflection coating of the waterborne heat reflection coating layer is 40% -50%, and the solid content of the waterborne acrylic coating of the interface functional layer is 35% -50%.
Further, the waterborne polyurethane heat reflection coating of the waterborne heat reflection coating layer comprises a waterborne polyurethane emulsion and a heat reflection filler, and the waterborne acrylic coating of the interface functional layer comprises a waterborne acrylic emulsion and a heat reflection filler.
Further, the dosage of the anti-skid particles is 0.6-0.8kg/m2。
Further, the anti-slip particles include ceramic particles or quartz sand having a particle size of 0.6 to 1.2 mm.
Since the technical scheme is used, the beneficial effects of the utility model are that:
the utility model provides a combined type waterborne heat reflection bituminous paving structure, through set up the one deck boundary layer between bituminous paving and waterborne polyurethane heat reflection dope layer, the boundary layer adopts waterborne acrylic acid heat reflection coating, effectively reduces trompil, the fracture risk that waterborne polyurethane heat reflection dope layer exists. Compared with the bonding performance of the waterborne polyurethane heat reflection coating layer and the asphalt pavement, the bonding performance of the interface layer (acrylic heat reflection coating) and the asphalt pavement is better, so that the bonding strength of the coating and the pavement is improved, and the phenomenon that the coating is separated from the pavement or moves is prevented. In addition, the interface layer made of the acrylic heat reflection coating can further enhance the heat reflection effect of the asphalt pavement, and if part of sunlight passes through the water-based heat reflection coating layer, the interface layer can further achieve the heat reflection effect.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
Fig. 1 is the structural schematic diagram of the composite water-based heat-reflecting asphalt pavement.
Detailed Description
The invention will be further described with reference to the drawings and the following detailed description, which are not intended to limit the invention.
It should be noted that the terms "first", "second", and the like, as used herein, are used only to distinguish between different objects, and do not imply any particular sequential relationship between the objects. The terms "include" and "comprise," as well as derivatives thereof, mean inclusion without limitation. Unless otherwise specified and limited, the terms "mounted," "connected," and "connected" are to be construed broadly and may include, for example, mechanical or electrical connections, and communications between two elements, either directly or indirectly through intervening media, as well as the specific meanings of such terms as may be understood by those skilled in the art based on the context.
Fig. 1 shows the utility model discloses combined type waterborne heat reflection bituminous paving structure, including bituminous paving 1, lay interface functional layer 2 on bituminous paving, cover waterborne polyurethane heat reflection dope layer 3 and the anti-skidding grain bed 4 of setting on waterborne polyurethane heat reflection dope layer 3 on interface functional layer 2. The interface functional layer 2 is a water-based acrylic acid heat reflection coating layer, so that the adhesive force between the road surface and the water-based polyurethane heat reflection coating layer can be enhanced, and the heat reflection function of the road surface can be further ensured. The anti-skid particle layer 4 can improve the roughness of the road surface, ensure that the road surface has enough friction coefficient, increase the structural depth of the road surface and meet the driving requirements.
Further, the spreading amount of the waterborne polyurethane heat reflection coating of the waterborne heat reflection coating layer is 0.8-1.2kg/m2Aqueous propylene of said interfacial functional layerThe spreading amount of the acid coating is 0.15-0.3kg/m2。
Further, the solid content of the waterborne polyurethane heat reflection coating of the waterborne heat reflection coating layer is 40% -50%, and the solid content of the waterborne acrylic coating of the interface functional layer is 35% -50%.
Further, the waterborne polyurethane heat reflection coating of the waterborne heat reflection coating layer comprises a waterborne polyurethane emulsion and a heat reflection filler, and the waterborne acrylic coating of the interface functional layer comprises a waterborne acrylic emulsion and a heat reflection filler.
Further, the dosage of the anti-skid particles is 0.6-0.8kg/m2。
Further, the anti-slip particles include ceramic particles or quartz sand having a particle size of 0.6 to 1.2 mm.
Example 1
Cleaning impurities such as asphalt particles, dust and the like of the asphalt pavement, and paving an interface functional layer, wherein the interface functional layer is a water-based acrylic coating, and the dosage of the water-based acrylic coating is 0.2kg/m2(based on the solids content of the coating); after the interface layer coating is solidified, spreading a main heat reflection coating layer which is self-made waterborne polyurethane heat reflection coating, wherein the dosage of the main heat reflection coating layer is 0.8kg/m2Based on the solid content of the coating, 0.7kg/m of a water-based epoxy heat reflection coating was applied on the layer of the primary heat reflection coating2The particle size of the quartz sand antiskid granules is 1.0-1.2 mm; the vehicle can be used after curing for a short time.
The utility model discloses still prepared another road surface pavement structure as the comparative example, the road surface structure of comparative example pave with the utility model provides a pavement structure is similar, lies in the road surface structure of comparative example among the non-interface functional layer, and waterborne polyurethane heat reflection coating directly paves on bituminous paving.
The utility model discloses a waterborne polyurethane heat reflection coating and waterborne acrylic coating can be based on current material and allocate and form, and waterborne polyurethane heat reflection coating includes waterborne polyurethane composition and heat reflection filler, and waterborne acrylic coating includes waterborne acrylic emulsion and heat reflection filler.
Example 2
The composite waterborne heat-reflective pavement structure laid in example 1 and the pavement structure laid in the comparative example were subjected to performance comparative tests, and the test results are shown in the following table.
TABLE 1 comparison of two road surface performance tests
As can be seen from the results shown in table 1, the composite water-based heat-reflective asphalt pavement structure provided by the present invention has more excellent bonding strength and coating peeling condition, and increases the durability of the coating. The setting of the interface layer of the water-based acrylic heat-reflecting coating effectively reduces the risk of opening holes and cracking of the water-based polyurethane heat-reflecting coating. Compared with a paving structure in which the waterborne polyurethane heat reflection coating layer is directly paved on an asphalt pavement, the arrangement of the interface layer (acrylic heat reflection coating) improves the bonding strength of the coating and the pavement, and prevents the coating from being separated from the pavement or moving. In addition, the interface layer made of the acrylic heat reflection coating can further enhance the heat reflection effect of the asphalt pavement, and if part of sunlight passes through the water-based heat reflection coating layer, the interface layer can further achieve the heat reflection effect.
While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.
Claims (6)
1. The utility model provides a combined type waterborne heat reflection bituminous paving builds structure which characterized in that: the asphalt pavement layer is paved from bottom to top, the interface functional layer is a water-based acrylic acid heat reflection coating layer, and the water-based heat reflection coating layer is a water-based polyurethane heat reflection coating layer.
2. The composite aqueous heat-reflecting asphalt pavement paving structure according to claim 1, characterized in that: the spreading amount of the waterborne polyurethane heat reflection coating of the waterborne heat reflection coating layer is 0.8-1.2kg/m2The spreading amount of the water-based acrylic paint of the interface functional layer is 0.15-0.3kg/m2。
3. The composite aqueous heat-reflecting asphalt pavement paving structure according to claim 1, characterized in that: the solid content of the waterborne polyurethane heat reflection coating of the waterborne heat reflection coating layer is 40% -50%, and the solid content of the waterborne acrylic coating of the interface functional layer is 35% -50%.
4. The composite aqueous heat-reflecting asphalt pavement paving structure according to claim 1, characterized in that: the waterborne polyurethane heat reflection coating of the waterborne heat reflection coating layer comprises a waterborne polyurethane emulsion and heat reflection fillers, and the waterborne acrylic coating of the interface functional layer comprises a waterborne acrylic emulsion and heat reflection fillers.
5. The composite aqueous heat-reflecting asphalt pavement paving structure according to claim 1, characterized in that: the dosage of the anti-skid particles of the anti-skid particle layer is 0.6-0.8kg/m2。
6. The composite aqueous heat-reflecting asphalt pavement paving structure according to claim 1, characterized in that: the anti-skid particles of the anti-skid particle layer comprise ceramic particles or quartz sand with the particle size of 0.6-1.2 mm.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202020374292.6U CN212000443U (en) | 2020-03-23 | 2020-03-23 | Combined type waterborne heat reflection asphalt pavement paving structure |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112832084A (en) * | 2020-12-31 | 2021-05-25 | 山西省交通科技研发有限公司 | Anti-stripping environment-friendly colorful anti-skid pavement and preparation method thereof |
| WO2023060609A1 (en) * | 2021-10-16 | 2023-04-20 | 海门茂发美术图案设计有限公司 | Road pavement structure |
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2020
- 2020-03-23 CN CN202020374292.6U patent/CN212000443U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112832084A (en) * | 2020-12-31 | 2021-05-25 | 山西省交通科技研发有限公司 | Anti-stripping environment-friendly colorful anti-skid pavement and preparation method thereof |
| WO2023060609A1 (en) * | 2021-10-16 | 2023-04-20 | 海门茂发美术图案设计有限公司 | Road pavement structure |
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