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A Construction Method of Low Friction Coefficient Pavement in Dry State

A low-friction coefficient and construction method technology, applied to roads, roads, on-site paved condensate pavements, etc., can solve the problems of vehicles unable to drive and test normally, complex road surface construction technology, and large resource consumption, etc., to achieve good mixing Solubility, reduce friction coefficient, prolong service life

Active Publication Date: 2021-10-12
北京愚公道路养护有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] 1. The use of steel or stone is more expensive and consumes a lot of resources
[0006] Second, the road construction process is complex
[0007] 3. It must rely on sprinkling water to moisten, and after the road is worn out, it is difficult to repair; in severe cold winter, the friction coefficient is too low after the sprinkling road surface freezes, and the vehicle cannot be driven and tested normally at all.

Method used

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  • A Construction Method of Low Friction Coefficient Pavement in Dry State
  • A Construction Method of Low Friction Coefficient Pavement in Dry State
  • A Construction Method of Low Friction Coefficient Pavement in Dry State

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Embodiment 1

[0045] Such as figure 1 As shown, it is a flow chart of the construction method of the low friction coefficient road surface in the dry state according to the preferred embodiment 1 of the present invention. combine figure 1 Come understand embodiment 1 of the present invention, it comprises steps:

[0046] Step 1. Pretreatment of the asphalt subgrade surface to be constructed

[0047] The surface treatment of the asphalt subgrade is mainly to clean the floating ash, loose small particles and uneven surface on the surface. This process helps to improve the adhesion between the various coatings and the surface of the asphalt roadbed during the construction process. The better the asphalt pavement is treated, the more it can avoid peeling and hollowing in the later stage. The specific operation of this step can be: first use a high-precision grinder to dry-grind the surface of the asphalt pavement to 1mm, and then use a ruler ≥ 3 meters to confirm the flatness after grinding;...

Embodiment 2

[0073] This embodiment is a further improvement on the basis of embodiment 1, the only difference is that in step 6, when preparing the topcoat, in order to take into account other requirements for the road surface in the industry, such as tire adhesion, further prolong the service life of the road surface and reduce the friction of the road surface Coefficient, improving construction performance, etc., the topcoat also needs to meet the following performance indicators:

[0074]

[0075] Refer to Embodiment 1 for other operating steps and methods of this embodiment, and detect the completed road surface, and the detection results are as follows:

[0076] Water resistance: No abnormal phenomenon after immersion in water for 24 hours; bonding strength with asphalt subgrade surface ≥ 2.0Mpa; after pavement construction is completed, the total amount of coating is 0.9Kg-1.2Kg / m 2 .

Embodiment 3

[0078] This embodiment is a further improvement on the basis of Embodiment 2, the difference is only that in step 5, when selecting the color paste or preparing the color paste, in order to take into account other requirements for the road surface in the industry, such as further prolonging the service life of the road surface, improving light resistance and Weather resistance, improving construction performance, etc., the color paste also needs to meet the following performance indicators:

[0079] project technical indicators experiment method tinting strength Less dosage, strong coloring power GB / T 21473-2008 Lightfastness ≥5 GB / T 21473-2008 weather resistance ≥3 GB / T 21473-2008

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Abstract

The invention relates to a construction method of a low friction coefficient road surface in a dry state, which comprises: S1: pretreating the surface of the roadbed to be constructed; S2: spraying VAE emulsion on the surface of the roadbed to be constructed after pretreatment; S3: drying on the VAE emulsion Afterwards, the wear-resistant primer is coated on the dry VAE surface; S4: coating topcoat, which contains finish paint, curing agent and thinner in the topcoat; the number of times of coating of the topcoat is 1 time or 2 times As mentioned above, the coefficient of friction of the road surface is tested every time it is painted and dried and cured until the friction coefficient of the road surface is less than 0.5 in a dry state. The invention adopts a spraying or rolling coating process to bond the asphalt pavement as a whole, reduces the friction coefficient of the asphalt pavement in a dry state to less than 0.5, and meets the test requirements for the braking stability of vehicles on curves. The construction method of the invention is simple and fast, and does not need to be sprinkled with water to obtain a road surface with a low friction coefficient, and is easy to repair after wear and aging.

Description

technical field [0001] The invention relates to the technical field of road surface construction, in particular to a construction method for a road surface with a low friction coefficient in a dry state used for vehicle curve braking performance testing. Background technique [0002] The domestic automobile industry is developing rapidly, and automobile research and development has become a very important field in the contemporary era. In the process of automobile research and development, along with the research and application of various road forms, low friction coefficient road surface is a road surface form that is often used in the process of automobile research and development. The asphalt concrete pavement with a friction coefficient not greater than 0.5 can promote the ability of the test unit to carry out relevant tests and researches on the braking stability of vehicles in curves. [0003] Commonly used roads are asphalt roads or cement roads. However, the wet te...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E01C7/35C09D123/08C09D7/61C09D1/08
Inventor 杨思功赵铁拓刘春杰刘平李超
Owner 北京愚公道路养护有限公司
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