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Surface treatment method for base course of asphalt pavement

A technology of asphalt pavement and base layer, which is applied in the field of pavement construction, and can solve the problems of interlayer transition, shear fault or sliding separation, unable to meet the bearing capacity, including strength and stiffness, etc., to achieve improved shear strength and increase shear resistance Deformation ability, effect of improving shear resistance

Inactive Publication Date: 2014-04-30
ALATECH TECH
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  • Application Information

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Problems solved by technology

Therefore, after being rolled and used by a motor vehicle, especially when the motor vehicle brakes under overload and high speed conditions, shear faults or sliding separation between the pavement layer and the base layer are prone to occur and cause interlayer shifting. In severe cases, the road will be shortened. service life
It cannot meet the good bearing capacity, including strength and rigidity requirements of the asphalt pavement, and it is difficult to ensure that there is sufficient resistance to plastic permanent deformation between the motor wheel and the road surface

Method used

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  • Surface treatment method for base course of asphalt pavement

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Embodiment 1

[0026] The asphalt pavement paving construction method of the present embodiment comprises the following steps:

[0027] Step 1. Fill the base layer in layers. The thickness of each layer is 10-20cm. The material of the base layer must meet the requirements of JTJ034-2000 "Technical Specifications for Construction of Highway Pavement Base Layer"; the base layer is divided into two layers;

[0028] Step 2. Use the grass-roots paving equipment to level the grass-roots paving;

[0029] Step 3: Carry out initial compaction on the base layer, and the compaction degree is ≥98%;

[0030] Step 4: Compressing the base layer, the longitudinal section of the base layer has a trapezoidal tooth structure, and the trapezoidal tooth structure includes at least one group of adjacent trapezoidal teeth and trapezoidal tooth grooves, and the length of the upper bottom of the trapezoidal teeth is less than The length of the lower bottom, the length of the upper bottom of the trapezoidal tooth gr...

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Abstract

Belonging to the technical field of highways, the invention relates to a pavement construction method, particularly to a rolling construction method for an asphalt pavement roadbed. Based on the traditional asphalt pavement paving construction technologies, rolling moulding is further carried out to the base course surface, so that the traditional planar bonding contact of the original asphalt pavement surface and the base course is changed, the base course and a subcrust asphalt mixture are in an embedded compact combination state, so that the interlayer of the base course surface and the asphalt subcrust realizes a denticulate embedded bonding effect in an integral form of compact embedded combination. With the method provided by the invention, after construction, the shearing strength between the base course surface and the subcrust is greatly improved compared with the traditional planar bonding layer construction process, the anti-shear ability between the asphalt pavement and the base course is enhanced, and at the same time, the anti-shear deformation ability of the asphalt pavement is also improved. While the bearing capacity of the asphalt pavement is improved, the service life is also prolonged.

Description

technical field [0001] The invention relates to a road construction method, in particular to a rolling construction method of an asphalt pavement subgrade, and belongs to the technical field of roads. Background technique [0002] Asphalt pavement is a pavement structure in which asphalt material is used as a binding material to bond mineral aggregates or mixtures to build a surface layer. Domestically, semi-rigid base asphalt pavement structure is the main structure. The combination of each structural layer is closely related to the local climate, traffic volume and traffic composition. Reasonable structure combination can make the asphalt pavement economical and durable. [0003] The usual asphalt pavement paving is to spray asphalt adhesive on the flat and compacted base surface after the base pavement is completed, and then pave the surface layer of asphalt mixture and compact it. Although this construction technology can guarantee The general bonding strength between t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E01C7/18E01C19/17
Inventor 施伟斌
Owner ALATECH TECH
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