Highway pavement structure using construction waste as aggregate

A technology for pavement structure and construction waste, which is applied to cohesive pavement, buildings, roads and other directions paved on site, which can solve the problems of poor strength, stiffness and stability that cannot meet the pavement structure requirements of grade roads, and achieve good strength , improve the degree of compactness, and protect the environment

Active Publication Date: 2017-07-14
CHINA NAT PETROLEUM CORP CHUANQING DRILLING ENG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, this invention only uses construction waste as the base material of road pavement. In the actual application process, it is found that the pavement using this material has poor strength, rigidity and stability, and cannot meet the road use requirements of grade road pavement structures.

Method used

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  • Highway pavement structure using construction waste as aggregate
  • Highway pavement structure using construction waste as aggregate
  • Highway pavement structure using construction waste as aggregate

Examples

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Embodiment 1

[0035] As a preferred embodiment of the present invention, it includes a base layer, a base layer, a base layer and a surface layer that are laid down in order from bottom to top; the materials of the base layer and the base layer are all waste concrete, and the waste concrete used in the base layer The particle size is 50~150mm; the base layer adopts waste concrete with a particle size of 9.5-26.5mm; the base layer adopts base aggregate with a particle size of 4.75-40mm; the surface layer adopts a surface layer with a particle size of 2.36-20mm aggregate.

Embodiment 2

[0037] As the best embodiment of the present invention, the present invention is a "large-small-medium-fine" road structure, from bottom to top: the foundation treatment adopts large blocks with a main particle size of 100mm; the subbase layer adopts discontinuous Graded small pieces of slag with a particle size of 10-20mm; base layer selects intermediate slag with a particle size of 4.75-40mm (including a certain proportion of crushed stone); selects 2.36-20mm of slag and crushed stone for the surface layer.

[0038] In the present invention, the subgrade pavement structure layer is designed as figure 1 Shown:

[0039] In the structural layer 1 described in the figure, the material composition: large pieces of waste concrete.

[0040] In the structure layer 2 described in the figure, the composition of the material: broken waste concrete blocks.

[0041] In the structural layer 3 described in the figure, there are four alternatives for the composition of materials: a. Waste concrete...

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Abstract

The invention discloses a highway pavement structure taking building rubbish as aggregate, and relates to the technical field of highway pavement structural improvement. The highway pavement structure comprises a basal layer, a sub-base layer, a base layer and a surface layer from the bottom up, wherein both the basal layer and the sub-base layer are made of waste concrete; the particle diameter of the waste concrete used in the basal layer is 50 to 150 mm; the particle diameter of the waste concrete used in the sub-base layer is 9.5 to 26.5 mm; the particle diameter of base layer aggregate used in the base layer is 4.75 to 40 mm; the particle diameter of surface layer aggregate used in the surface layer is 2.36 to 20 mm. The highway pavement structure adopts no binder, has higher strength, rigidity and stability due to embedding, extrusion, keying and similar functions among aggregate, and can meet use requirements of low-grade highway pavement structures.

Description

Technical field [0001] The invention relates to the technical field of road pavement structure improvement, and specifically to a road pavement structure using construction waste as aggregate. Background technique [0002] With economic development and social progress, the world's population has greatly expanded, natural resources have been depleted day by day, and the waste generated by industrial production and living processes has also increased day by day. In particular, the construction industry is developing very rapidly, and the amount of construction waste generated by it has also increased unprecedentedly. According to statistics from Japan’s “Ministry of Construction”, construction waste accounts for about 40% of the total waste. In 1995, the country’s construction waste reached 99 million tons; the United States only discards 160 million tons of concrete each year, and the European Increase to about 162 million tons. About 650 million m2 of new houses are built in my...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E01C7/32C04B18/16
CPCY02W30/91
Inventor 叶文刚余小刚唐雪峰汪小琴周崇业马佼文华雷挺罗作芬
Owner CHINA NAT PETROLEUM CORP CHUANQING DRILLING ENG CO LTD
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