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Curve braking performance test pavement and construction method thereof

A construction method and a technology of curves, which are applied to the road surface of the curve braking performance test and its construction field, can solve problems such as adhesion to the road surface, reduced service life of the road surface of the curve braking performance test road, uneven cracks, etc., and achieve The effect of prolonging the service life, ensuring accuracy, and improving durability

Active Publication Date: 2022-02-11
北京愚公道路养护有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Most of the existing curve braking performance test roads are processed by ES table. The ES surface treatment part of the curve braking performance test road surface is different from the expansion coefficient of the pavement base layer, resulting in uneven cracks, and the material Its own characteristics cause the vehicle tire particles to adhere to the surface of the road surface, which greatly reduces the service life of the road surface of the curve braking test road. The general service life is only two years. How can it be tested without affecting the curve brake road Under the premise of the results, prolonging the service life of the braking test road surface in curves is a technical problem that needs to be solved urgently.

Method used

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  • Curve braking performance test pavement and construction method thereof
  • Curve braking performance test pavement and construction method thereof
  • Curve braking performance test pavement and construction method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] A construction method of a road surface for a braking performance test on a curve, comprising the following steps:

[0026] S1. Laying of lime-stabilized soil subbase:

[0027] 1. Measurement and stakeout: Restoring the center line on the top of the earthwork subgrade road bed, setting up a pile every 15-20m for the straight line section, and setting up a pile every 10-15m for the curved section, and setting instructions on the edges of the road shoulders on both sides: carry out horizontal measurement, Mark the design elevation of the cement-soil edge with obvious signs on the indicator pile.

[0028] 2. Transportation and paving of earthwork and lime: Sprinkle water to make the surface moist for the section of paving earthwork: When earthwork is loaded into trucks, the quantity of each truck should be controlled to be basically equal: on the top of the road bed, according to the calculated pile of soil for each truck Area, use lime lines to make grids to control unlo...

Embodiment 2

[0046] The present embodiment is carried out on the basis of Example 1, wherein, in step S1, in the laying process of the lime-stabilized soil sub-base, the content of lime in the lime-stabilized soil sub-base is 10%, and the height of the lime-stabilized soil sub-base is 20cm, in step S2, cement dose is 5% in the cement-stabilized gravel base course, (promptly all is gravel except cement, water, maximum particle diameter 31.5mm, maximum nominal particle diameter 26.5mm), laying thickness earlier is The first cement-stabilized macadam base of 18cm, the second cement-stabilized macadam base is laid after 7 days of maintenance, the thickness is 18cm, that is, the total thickness of the cement-stabilized macadam base is 36cm, and the maximum particle size of the base aggregate is not More than 31.5mm, the gradation composition of the aggregate is shown in Table 1 below.

[0047] Table 1

[0048]

[0049]

[0050] In step S3, the pouring thickness of the C35 cement concrete...

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Abstract

The invention relates to a curve braking performance test pavement and a construction method thereof. The curve braking performance test pavement sequentially comprises a subbase layer, a base layer, cement concrete and a carborundum pavement from bottom to top, the subbase layer is lime stabilized soil with the thickness being 20-70 cm, the base layer is a cement stabilized macadam layer with the thickness being 15-70 cm, the cement concrete is a cement concrete layer with the thickness being 24-40 cm, and the carborundum pavement is a carborundum layer with the thickness of 8-10 mm. According to the curve braking test pavement provided by the invention, the service life of the test road can be prolonged while the accuracy of the detection result of the curve braking test pavement is ensured.

Description

technical field [0001] The invention relates to a curve braking performance test road surface and a construction method thereof, belonging to the technical field of road construction. Background technique [0002] Most of the existing curve braking performance test roads are processed by ES table. The ES surface treatment part of the curve braking performance test road surface is different from the expansion coefficient of the pavement base layer, resulting in uneven cracks, and the material Its own characteristics cause the vehicle tire particles to adhere to the surface of the road surface, which greatly reduces the service life of the road surface of the curve braking test road. The general service life is only two years. How can it be tested without affecting the curve brake road On the premise of the results, it is an urgent technical problem to prolong the service life of the curve braking test road surface. Contents of the invention [0003] (1) Technical problems ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E01C9/00E01C7/32E01C19/48E01C23/03E01C11/16E01C19/46E01C23/01
CPCE01C9/007E01C7/325E01C19/48E01C23/03E01C11/16E01C19/46E01C23/01
Inventor 李超管田雨张健吕源冯旭东李宁
Owner 北京愚公道路养护有限公司
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