Semi-rigid substratum anti-crack pavement structure suitable for cold areas and construction method

Abstract

The invention discloses a semi-rigid substratum anti-crack pavement structure suitable for cold areas and a construction method. The structure comprises a semi-rigid subbase, a semi-rigid substratum and a surface layer which are sequentially laid on a roadbed from bottom to top, a first prime coat is laid between the semi-rigid subbase and the semi-rigid substratum, a protective layer is laid between the semi-rigid substratum and the surface layer, a reinforcing layer is laid in the semi-rigid substratum and is integrated with the semi-rigid substratum, the reinforcing layer comprises a plurality of basalt fiber belts which are parallel in the length direction of the road surface and are laid at equal intervals, and the semi-rigid substratum comprises a semi-rigid lower substratum and a semi-rigid upper substratum. The method comprises the following steps: 1, constructing the semi-rigid subbase; 2, constructing the first prime coat; 3, constructing the semi-rigid substratum and the reinforcing layer; 4, constructing the protective layer; 5, constructing the surface layer. According to the semi-rigid substratum anti-crack pavement structure suitable for cold areas and a constructionmethod, cracking of the semi-rigid substratum is actively resisted through the basalt fiber belt, so that the generation of reflection cracks is prevented or delayed, and better crack resistance effect and economic benefit are achieved.

Description

technical field [0001] The invention belongs to the technical field of semi-rigid base anti-crack pavement construction, and in particular relates to a semi-rigid base anti-crack pavement structure and construction method suitable for cold regions. 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. 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...

AI Technical Summary

Problems solved by technology

Cracks in semi-rigid materials tend to extend to the surface to form reflective cracks, and the existence of cracks not only reduces the driving quality of vehicles, but also destroys the integrity and continuity of the pavement structure, and to a certain extent leads to weakening of the structural strength

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