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Bonding layer synchronizing drainage asphalt pavement construction process

A technology of drainage asphalt and construction technology, which can be applied to cohesive pavement paved on site, roads, roads, etc., which can solve the problems of prolonging the construction period, exceeding 24 hours, and reducing construction efficiency, so as to improve construction efficiency, facilitate construction, and The effect of saving construction time

Inactive Publication Date: 2018-07-03
中路交建(北京)工程材料技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, regardless of the ultra-thin wear layer of the drainage asphalt pavement or the upper layer of the drainage asphalt pavement, the traditional construction technology is adopted. Under the limitation of the existing construction technology, it has some obvious disadvantages, such as when the sticky layer adopts SBS modified emulsified asphalt , it is generally required that the demulsification time should be more than 24 hours, and then the paving operation of the mixture should be carried out
In this way, the construction period is prolonged and the construction efficiency is reduced.

Method used

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  • Bonding layer synchronizing drainage asphalt pavement construction process
  • Bonding layer synchronizing drainage asphalt pavement construction process
  • Bonding layer synchronizing drainage asphalt pavement construction process

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] figure 1 It shows a construction flow chart of a construction process of a drainage asphalt pavement with a simultaneous adhesion layer according to an embodiment of the present invention. The construction process can include:

[0039] In step 101, pre-construction preparations are performed, including raw material preparation and construction machinery preparation;

[0040] In step 102, the treatment of the underlying layer is carried out, including the investigation of the disease of the underlying layer, and different treatment methods are adopted for each type of disease investigated, and a special sweeper is used to clean the road surface to ensure that the road surface is clean and free of debris;

[0041] In step 103, mixing the drained asphalt mixture includes strictly controlling the production temperature of the mixture, and the discharge temperature is 170-185°C, and the mixing process adopts a dry method or a wet method;

[0042] In step 104, the transportation of ...

Embodiment 2

[0050] image 3 It shows a structure diagram of a drainage asphalt pavement obtained by a drainage asphalt pavement construction process with a synchronous adhesive layer according to an embodiment of the present invention.

[0051] The pavement structure includes a drainage asphalt surface layer 30, an adhesive layer 31, and a lower bearing layer 32 in order from top to bottom. The drainage asphalt surface layer 30 is an ultra-thin wear layer with a thickness of 1.5-3 cm, or the drainage asphalt surface layer 30 is an asphalt pavement upper layer with a thickness of 3-5 cm.

[0052] In a possible implementation manner, the drainage asphalt surface layer 30 is paved with drainage asphalt mixture, with a porosity ranging from 18 to 25%, and a water permeability coefficient not less than 5000 ml / min.

[0053] In a possible implementation manner, the adhesive layer 31 includes one of SBS modified emulsified asphalt or SBR modified emulsified asphalt, and the spreading amount is 0.3 to 0...

application example 1

[0064] The application example 1 of the present invention provides a construction process of a cohesive layer synchronous drainage asphalt pavement, which is used in the preventive maintenance of old highways, see image 3 , The pavement structure from top to bottom is the drainage asphalt surface layer 30, the sticky layer 31, and the underlying layer 32. The drainage asphalt surface layer 30 is an ultra-thin wear layer with a thickness of 1.5cm. The underlying layer 32 is the original pavement of the old road. .

[0065] Wherein, the drainage asphalt surface layer 30 is paved with PAC-05 drainage asphalt mixture, the porosity is 19.1%, the water permeability is 5217ml / min, and the gradation range is shown in Table 1 below.

[0066] Table 1

[0067] Types of

9.5

4.75

2.36

1.18

0.6

0.3

0.15

0.075

PA-05

100

15~50

8~30

5~12

4~10

4~8

4~7

3~6

[0068] Wherein, the adhesive layer 31 is SBS modified emulsified asphalt, the spraying temperature is 70°C, the solid content is 60%, and the...

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Abstract

The invention provides a bonding layer synchronizing drainage asphalt pavement construction process which comprises the following steps: carrying out pre-construction preparation; treating a lower bearing layer; mixing a drainage asphalt mixture; transporting the drainage asphalt mixture; scattering the bonding layer and paving the drainage asphalt mixture at the same time; grinding the drainage asphalt mixture; and opening the traffic. By means of the construction process provided by the invention, the wheel bonding phenomenon of a transportation vehicle as the viscosity of the bonding layermaterial is great can be avoided; the bonding effect of the bonding layer is increased without scattering gravels or pre-wrapping the gravels. In particular, when the bonding layer is emulsified asphalt, the emulsified asphalt can be quickly demulsified under the heat action of the drainage asphalt mixture, and meanwhile, water in the drainage asphalt mixture is vaporized to drive the emulsified asphalt to move upward, so that the emulsified asphalt and the drainage asphalt form a whole on the surface, the interlayer bonding effect and the water sealing action are enhanced, and the long-term durability of a pavement is improved.

Description

Technical field [0001] The invention relates to the technical field of highway engineering, in particular to a construction process of a drainage asphalt pavement with a synchronous adhesive layer. Background technique [0002] Drainage asphalt pavement refers to a new type of asphalt concrete surface layer with a porosity of 18-25% after compaction, which can form a drainage channel inside the mixture. It is essentially a single-size gravel that forms a skeleton-gap structure according to the embedding mechanism. Graded asphalt mixture. Drainage asphalt pavement uses large-void asphalt mixture as the surface layer to penetrate rain into the drainage function layer, and drain the rainwater laterally through the voids in the layer, thereby eliminating the road surface water film that brings many unfavorable effects on driving, and significantly improving the rainy weather. The safety and comfort of driving. [0003] In recent years, as the importance of drainage asphalt pavement h...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E01C7/32E01C19/23E01C11/22
CPCE01C7/32E01C11/224E01C19/23
Inventor 曹东伟李明亮范勇军彩雷洲平树江
Owner 中路交建(北京)工程材料技术有限公司
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