Heating-layer pavement for cold region and construction technology thereof

Abstract

The invention discloses a heating-layer pavement for a cold region. The heating-layer pavement comprises a pavement structure layer, a roadbed structure layer, a foam light layer and an original frozen soil layer, wherein the pavement structure layer is arranged at the top part of the roadbed structure layer in parallel; the roadbed structure layer covers the top part of the foam light layer; the foam light layer is arranged at the top part of the original frozen soil layer in parallel and is arranged in a position which is 0.8 to 2.0 m apart from the bottom part of the pavement structure layer; the foam standard density of the foam light layer is 50kg / m<3>. According to the heating-layer pavement for the cold region, disclosed by the invention, in foam light soil, the volume percentage of foam is up to 40 to 70 percent, the content of the foam is high, the volume weight is small, the shock absorption performance is good, a heat conductivity coefficient is small, heat insulation and sound insulation effects are good, and the anti-freezing-and-thawing performance is strong; when the heating-layer pavement is used as a heat insulation layer between frozen soil and an earth fill embankment in the cold region, energy exchange between original frozen soil and the exterior can be well switched off, heat insulation and heat preservation effects are achieved, and the problem of frost failures in the cold region can be effectively solved.

Description

technical field [0001] The invention relates to a heating layer pavement used in cold regions. Background technique [0002] Roads are one of the symbols of the development of human civilization. With the development of automobile technology and economy, people have built a large number of asphalt and concrete paved roads, which have become symbols and features in urban roads. It is also worse for road construction in more rural areas. One of the hallmarks of residents' living standards. [0003] But at the same time, in many cold regions, especially in the northeastern and western plateau regions of our country, there are more permafrost. Building engineering structures in permafrost regions must face the two major problems of frost heaving and thawing. Especially when building roads, often There will be problems of frost heave, and these problems have directly led to the difficulty of road construction in alpine regions. Contents of the invention [0004] The technical...

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Problems solved by technology

[0003] But at the same time, in many cold regions, especially in the northeastern and western plateau regions of our country, there are more permafrost. Building engineering structures in permafrost regions must face the two major problems of frost heaving and thawing. Especially when building roads, often There will be problems of frost heave disease, these problems directly lead to the problem of difficult road construction in alpine regions

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