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Stable subgrade structure and construction technology against freezing and thawing in seasonally frozen regions

A construction technology and technology for seasonal freezing areas, applied in the field of stabilizing roadbed structure and construction technology, can solve problems such as road damage, avoid deformation and damage, reduce road damage, and ensure impermeability.

Active Publication Date: 2021-04-13
ZHANGJIAKOU ROAD & BRIDGE CONSTR GRP CO LTD
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AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a stable subgrade structure and construction technology for preventing freezing and thawing in seasonally frozen areas, so as to solve the technical problem existing in the prior art that roads in seasonally frozen areas are damaged during periodic freezing and thawing

Method used

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  • Stable subgrade structure and construction technology against freezing and thawing in seasonally frozen regions

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Embodiment Construction

[0028] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0029] see figure 1 , a stable subgrade structure and construction process for preventing freezing and thawing in seasonally frozen areas provided by the present invention will now be described.

[0030] The stable roadbed structure for preventing freezing and thawing in the seasonally frozen region includes a salt-doped road base 10 containing inorganic salt admixture, an anti-seepage layer 20 arranged on the upper layer of the salt-infused road base 10, and an upper layer arranged on the anti-seepage layer 20 30 of the first road grass.

[0031] Compared with t...

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PUM

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Abstract

The invention provides a stable subgrade structure and construction technology for preventing freezing and thawing in seasonal freezing areas, and belongs to the technical field of road construction. The present invention can reduce the melting point of water in the salt-mixed road base by setting the salt-mixed road base containing inorganic salt admixture, avoid freezing and swelling inside the road base, and further avoid deformation and damage of the road surface; The anti-seepage layer and the first road base are set up. The anti-seepage layer prevents the moisture containing inorganic salt admixture from entering the first road base, causing corrosion to the first road base and the road surface, and can also block the rise of water, which is beneficial Keep the first road base at a low moisture content level, and weaken the damage caused by periodic freezing and thawing to the first road base and pavement.

Description

technical field [0001] The invention belongs to the technical field of road construction, and more specifically relates to a stable subgrade structure and construction technology for preventing freezing and thawing in seasonally frozen regions. Background technique [0002] Seasonally frozen soil area, referred to as the seasonally frozen area, the soil surface in the seasonally frozen area will produce periodic freezing and thawing phenomena in seasonal changes. Because water will expand after freezing, and the roadbed is directly paved on the soil layer and contains a lot of water, roads in seasonally frozen areas are often damaged by periodic freezing and thawing, and their service life drops sharply. Contents of the invention [0003] The purpose of the present invention is to provide a stable subgrade structure and construction technology for preventing freezing and thawing in seasonally frozen areas, so as to solve the technical problem existing in the prior art that...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E01C11/24E01C11/22
CPCE01C11/225E01C11/227E01C11/245
Inventor 陈志杰郑瑞海杨鹏程兰桂芳左少淼赵丽娟李海燕李建海寇建国贾河赵建王永杰
Owner ZHANGJIAKOU ROAD & BRIDGE CONSTR GRP CO LTD
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