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Construction method for semi-rigid anti-cracking road surface in alpine region

It is a technology of high cold area and construction method, which can be applied to coagulation pavement paved on site, roads, roads and other directions, which can solve the problems of semi-rigid base pavement cracking and other problems, and achieve the effect of prolonging service life, strong adaptability and strengthening connection and cooperation

Inactive Publication Date: 2019-10-08
张贵霖
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AI Technical Summary

Problems solved by technology

[0006] In order to solve the problem of serious cracking of semi-rigid base pavement in alpine regions in the prior art, a construction method for semi-rigid anti-crack pavement in alpine regions that can effectively reduce cracks is provided

Method used

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Embodiment Construction

[0021] All features disclosed in this specification, or steps in all methods or processes disclosed, may be combined in any manner, except for mutually exclusive features and / or steps.

[0022] The present invention will be described in detail below.

[0023] The semi-rigid anti-crack pavement construction method in the alpine region is characterized in that it comprises the following steps:

[0024] a. Lay semi-rigid anti-crack base;

[0025] b. Lay a permeable layer on the semi-rigid crack-resistant lower base, and use basalt fiber tape as a reinforcement layer;

[0026] c. Lay a semi-rigid anti-crack upper base on the permeable layer;

[0027] d. Use construction machinery to pre-cut the semi-rigid anti-crack upper base, cut out pre-cracks with the same interval, fill the pre-cracks with filling materials, and paste the joint materials on the surface of the pre-cracks after filling;

[0028] e. Laying a protective layer on the semi-rigid crack-resistant upper base, the p...

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Abstract

The invention belongs to the technical field of road surface construction, and solves the technical problem that a semi-rigid base road surface in the prior art severely cracks in the alpine region. The invention discloses a construction method for the semi-rigid anti-cracking road surface in the alpine region. The method comprises the following steps of a, paving a semi-rigid anti-cracking lowerbase; b, paving a permeable layer on the semi-rigid anti-cracking lower base, and using a basalt fiber belt as a reinforcing layer; c, paving a semi-rigid anti-cracking upper base on the permeable layer; d, using construction machinery to conduct crack pre-cutting on the semi-rigid anti-cracking upper base so as to obtain pre-cracks of the same spacing, then filling the pre-cracks with crack filling materials, and after the pre-cracks are filled, attaching crack pasting materials on the surfaces of the pre-cracks; e, paving a protective layer on the semi-rigid anti-cracking upper base, whereinthe protective layer comprises a sealing layer composed of a second permeable layer and slurry and a waterproof layer above the sealing layer; and f, paving a surface layer on the protective layer, wherein the surface layer is made of asphalt mixed materials and has an upper layer, a middle layer and a lower layer. According to the construction method, the phenomenon of cracking of the semi-rigidroad surface in the alpine region can be effectively prevented.

Description

technical field [0001] The invention belongs to the technical field of pavement construction technology, and in particular relates to a semi-rigid crack-resistant pavement construction method in an alpine region. Background technique [0002] Semi-rigid base asphalt pavement is the main form of my country's high-grade highway pavement structure at present. It has the characteristics of high strength, good flatness and good fatigue resistance. The construction of transportation infrastructure provides strong support. [0003] However, with the application of a large number of semi-rigid bases in our country, it is found that there are serious cracks in them, which have become the main defects of the structure. Semi-rigid materials are highly sensitive to temperature and humidity due to their own material and structure characteristics. Therefore, in the process of strength formation and use, temperature shrinkage cracks due to temperature changes and dry shrinkage cracks due t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E01C7/32E01C11/00E01C11/02
CPCE01C7/32E01C11/00E01C11/02
Inventor 张贵霖
Owner 张贵霖
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