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Asphalt pavement paving method

A technology of asphalt pavement and asphalt surface layer, which is applied in the engineering field, can solve problems such as insufficient bonding strength, achieve the effects of enhanced bonding strength, solving insufficient penetration depth, and good penetration effect

Active Publication Date: 2013-01-16
CHANGAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to overcome the defect of insufficient bonding strength between the semi-rigid base and the surface layer existing in the road in the prior art, and provide a method that can improve the bonding performance and torsional shear resistance of the asphalt surface layer and the semi-rigid base. Capacity of asphalt road paving method

Method used

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  • Asphalt pavement paving method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] The asphalt pavement paving method of the present embodiment comprises the following steps:

[0018] (1) Transport the mixed cement-stabilized gravel mixture to the construction site, spread it evenly according to the loose paving thickness with a paver, and immediately shape the mixture after paving, when the moisture content of the mixture is greater than When the specified optimum moisture content (+1%~+2%) is reached, immediately roll the mixture until the compaction degree is greater than the specified compaction degree (95%), and immediately start health preservation for 3 days. The specific rolling the way is:

[0019] Use a heavy-duty bulldozer with a static weight of more than 25t to roll five times to make the lower part of the rolled layer dense, and use a heavy-duty three-wheel roller to continue rolling to make the upper part of the rolled layer dense and the surface smooth to form a semi-rigid base 3 .

[0020] (2) Carry out fine milling and cleaning on t...

Embodiment 2

[0030] The asphalt pavement paving method of the present embodiment comprises the following steps:

[0031] (1) Same as Example 1.

[0032] (2) Carry out fine milling and cleaning on the healthy semi-rigid base 3 to remove loose stones.

[0033] The specific fine milling method is:

[0034] 2.1) Accurately adjust the datum plane, transverse slope, and milling depth of the milling machine according to the datum point. The leveling instrument is always in normal working condition. Milling starts. The uniform speed of the milling machine is 5m / min, and the milling machine is controlled within the first 10 meters. The milling depth of the planer should be slowly adjusted from zero to the required milling depth of 4mm;

[0035] 2.2) Keep the milling depth at 4mm, and when driving at a constant speed to the last 10m, control the milling machine to slowly reduce the milling depth from 4mm to zero, and clean the surface of the semi-rigid base 3 after fine milling to remove loose sto...

Embodiment 3

[0039] The asphalt pavement paving method of the present embodiment comprises the following steps:

[0040] (2) Same as Example 1.

[0041] (2) Carry out fine milling and cleaning on the healthy semi-rigid base 3 to remove loose stones.

[0042] The specific fine milling method is:

[0043] 2.1) Accurately adjust the datum plane, transverse slope, and milling depth of the milling machine according to the datum point. The leveling instrument always maintains a normal working state. Milling starts. The uniform speed of the milling machine is 3m / min, and the milling machine is controlled within the first 10 meters. The milling depth of the planer should be slowly adjusted from zero to the required milling depth of 6mm;

[0044] 2.2) Keep the milling depth at 6mm. When driving at a constant speed to the last 10m, control the milling machine to slowly reduce the milling depth from 6mm to zero, and clean the surface of the semi-rigid base 3 after fine milling to remove loose stone...

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Abstract

The invention relates to an asphalt pavement paving method. Before penetration oil is sprayed, a fine milling process is added, so that the interface structure depth of a semi-rigid base is obviously increased and the bond area is increased, and thus, the friction interlocking between an asphalt covering and the semi-rigid base is improved to a great extent, the anti-shear capacity between the asphalt covering and the semi-rigid base is greatly strengthened, the bonding strength is strengthened and the interlocking friction effect and the bonding action of the asphalt covering and the semi-rigid base are strengthened; and moreover, the penetration oil has a better penetration effect, so that the problem of insufficient penetration depth of the penetration oil is solved and the penetration oil really takes effects of consolidation, stabilization, connection, waterproofness and the like.

Description

technical field [0001] The invention relates to the technical field of engineering, and relates to a new road paving method capable of improving the connection state between a semi-rigid base layer and a surface layer. Background technique [0002] The bonding performance between the asphalt pavement and the semi-rigid base layer directly affects the service performance and service life of the road. From the core samples taken at the site of asphalt pavement damage, it can be seen that a considerable part of the pavement base is completely separated from the surface layer, which directly or indirectly leads to the generation of pavement diseases. At present, chemical methods such as spraying penetrating oil are mainly used to improve the connection between the asphalt surface and the semi-rigid base layer. However, the penetrating layer oil can only form a firm and stable surface layer of the base layer if it penetrates to a certain depth, and can help the overall connectio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E01C7/32
Inventor 张久鹏贾传峰杜群乐李彦伟裴建中
Owner CHANGAN UNIV
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