Construction waste improved expansive soil roadbed structure and construction method thereof

A technology for construction waste and soil roadbed, which is applied to buildings, roads, roads, etc., can solve problems such as uneven settlement, achieve balanced distribution of moisture content, be beneficial to environmental protection, and reduce project costs.

Inactive Publication Date: 2020-07-17
CCCC FIRST HIGHWAY CONSULTANTS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a construction waste improved expansive soil subgrade structure and its construction method. This structure composed of gravel soil cushion, edge-wrapped clay layer and anti-seepage geotextile can not only

Method used

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  • Construction waste improved expansive soil roadbed structure and construction method thereof
  • Construction waste improved expansive soil roadbed structure and construction method thereof
  • Construction waste improved expansive soil roadbed structure and construction method thereof

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Embodiment Construction

[0032] The present invention will be described in detail below in combination with specific embodiments.

[0033] The invention relates to an expansive soil roadbed structure improved by construction waste, the bottom layer of the structure is a gravel soil cushion layer 3, and above the gravel soil cushion layer 3 is a construction waste improved soil filler 4, and the two sides of the construction waste improved soil filler 4 are arranged An anti-seepage geotextile 1 is set above the edge-wrapped clay 2, construction waste improved soil filler 4 and the edge-wrapped clay 2 as a top seal layer.

[0034] Wherein: gravel soil cushion layer 3 thickness is 30cm. The construction waste improved soil filler 4 is a filler obtained by mixing construction waste into expansive soil. The construction waste improved soil filler 4 and the wrapping clay 2 are laid in layers at the same time, and the thickness of each layer is 20-25cm. The thickness of the binding clay 2 (thickness of the...

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Abstract

The invention relates to a construction waste improved expansive soil roadbed structure and a construction method thereof. The bottommost layer of the structure is a gravel soil cushion layer, construction waste improved soil filler is arranged above the gravel soil cushion layer, edge covering clay is arranged on the two sides of the construction waste improved soil filler, and anti-seepage geotechnical cloth is arranged above the construction waste improved soil filler and the edge covering clay to serve as a top sealing layer. According to the physical improvement method for doping the construction waste into the expansive soil, on one hand, the expansive soil roadbed expansibility can be reduced, and on the other hand, the roadbed strength and water permeability can be improved, so that the moisture content distribution in the roadbed is more balanced, the engineering discard is reduced, the land is saved, the engineering cost is reduced, and the environmental protection is facilitated.

Description

technical field [0001] The invention relates to the technical field of roadbed construction, in particular to an expansive soil roadbed structure improved by construction waste and a construction method thereof. Background technique [0002] Expansive soil has the characteristics of poor permeability, water absorption swelling, dehydration shrinkage, multiple cracks, and wetting, which have a significant impact on the stability of expansive soil embankment and road cutting. The surface of the subgrade filled with expansive soil is prone to dehydration shrinkage and cracking, and once re-immersed, the dehydration shrinkage will further increase the crack width, which is not conducive to the formation of subgrade integrity and strength, and reduces the stability of the subgrade and supporting structures. Therefore, in the absence of targeted treatment measures, the expansive soil excavated for subgrade construction is generally discarded, and a large number of abandoned square...

Claims

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Application Information

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IPC IPC(8): E01C3/00E01C3/04
CPCE01C3/003E01C3/04
Inventor 张留俊周志清张发如王朝相
Owner CCCC FIRST HIGHWAY CONSULTANTS
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