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Pavement structure of concrete highway in alpine region

A technology for pavement structure and alpine regions, applied in the direction of condensed pavement, roads, roads, etc. paved on site, can solve problems such as low-cost protection methods, alleviate performance inconsistencies, protect roads and roadbeds, and improve comprehensive use. effect of function

Inactive Publication Date: 2012-07-11
HOHAI UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Judging from the existing roadbed protection methods in alpine regions, there is no low-cost protection method with good protection effect

Method used

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  • Pavement structure of concrete highway in alpine region
  • Pavement structure of concrete highway in alpine region
  • Pavement structure of concrete highway in alpine region

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Embodiment Construction

[0017] Below in conjunction with accompanying drawing and specific embodiment the present invention is described in further detail:

[0018] pass figure 1 It can be seen that the pavement has four layers in total. They are respectively: a roller compacted fiber concrete layer (1), a waterproof layer (2), a medium-strength ordinary concrete layer (3), and a low-strength ordinary concrete layer (4).

[0019] Adopt mechanical construction, and carry out surface treatment according to the road surface conditions. If there is a super high base, it should be removed manually, and machinery cannot be used, otherwise it will easily cause large-scale loosening of the base, which will affect the uniformity of base strength; The deficiencies cannot be filled with base-level mixture, and the same (4) layer of concrete should be used for one-time construction and molding.

[0020]First lay low-strength ordinary concrete (4), made of C20-C25 concrete, with a thickness of about 10-12cm. ...

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Abstract

The invention relates to a highway pavement structure, in particular to a freeze-thaw resisting and water-proof cement concrete pavement with a gradient function. The pavement structure is composed of three layers of structures with gradient thermal conductivity, and the thermal conductivity of each layer descends from top to bottom, so as to cause heat to be emitted from the roadbed to the air, prevent heat in the air from spreading to the roadbed, keep the stability of a frozen soil layer, and play the role of protecting the roadbed in alpine region. The pavement structure is composed of a low intensity normal concrete layer, a moderate intensity concrete layer, a water-proof layer and a roller compaction fiber concrete layer. The pavement structure has the characteristics of highly water-proof and freeze-thaw resisting properties, and the integrated using function of the pavement is improved, therefore, the durability of the concrete pavement is extended, and the economic benefit is improved.

Description

Technical field [0001] The invention involves a road concrete pavement structure, which specializes in a concrete road pavement structure suitable for a high -cold area. Background technique [0002] The commonly used cement concrete pavement is cement slurry composed of cement, water, sand, and external agents as adhesive, gravel is the ingredients, sand is filled, and the sand is mixed.The thickness of the single-layer road is generally 220-280mm, which is large and crispy.During the commonly used waterproof layer road surface, during the driving process, due to the pumping effect of the tire, there is a method of pulling stress at the waterproof layer and the bridge panel interface.The pavement layer may be removed under the action of such methods to pull stress, causing damage.At the same time, a large shear stress is generated inside the layer, causing the shear deformation of uncertainty surfaces, and a relative displacement of cutting and destruction in the horizontal dire...

Claims

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Application Information

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IPC IPC(8): E01C7/32
Inventor 许政陈文
Owner HOHAI UNIV