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Recycled pavement structure and road construction process thereof

A technology of pavement structure and process, applied in roads, roads, buildings, etc., can solve the problems of polluted environment, less comprehensive recycling and utilization of various construction wastes, and waste of resources, etc., to enhance durability, reduce road construction costs, and prolong use. effect of life

Active Publication Date: 2019-12-24
沧州市市政工程股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the resource utilization rate of construction waste in my country is less than 5%, and the comprehensive recycling of various construction waste is even less
Most of the construction waste is disposed of or landfilled, which not only seriously pollutes the environment, but also causes a great waste of resources.

Method used

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  • Recycled pavement structure and road construction process thereof
  • Recycled pavement structure and road construction process thereof
  • Recycled pavement structure and road construction process thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach

[0042] As an embodiment of the present invention, the muck content in the cement-stabilized muck subbase is 93% to 96%, and the cement content is 4% to 7%; the recycled aggregate content in the cement-stabilized recycled aggregate base is 94% to 96%, the cement content is 4% to 6%; the recycled aggregate content of the waste asphalt pavement in the flexible base of the foamed asphalt cold recycled mixture is 70% to 80%, and the new aggregate content is 20% to 30% %, the foamed asphalt content is 1.5% to 3.5%, the cement content is 1% to 1.5%; the waste and old asphalt pavement recycled aggregate content in the lower layer of the warm-mixed recycled asphalt mixture is 10% to 40%, and the new aggregate content The content of new asphalt is 3% to 6%; the upper layer of the warm-mix rubber asphalt mixture, the content of waste tire rubber powder is 18% to 25% of that of rubber asphalt, and the asphalt ratio is 5.5% to 6.5%, the mixing temperature is 140℃~160℃; the thickness range ...

Embodiment 1

[0063] The pavement structure of a roadway in a certain city is as follows: After the roadbed 100 is treated, a 32cm thick cement-stabilized muck subbase (7-day unconfined compressive strength is 1.5-2.5MPa) is successively laid on the roadbed 100, and a 18cm-thick Cement-stabilized recycled aggregate base (7-day unconfined compressive strength is 3.0-4.0MPa), spray oil for penetration, lay 12cm thick foam asphalt cold recycled mixture, spray rubber asphalt and spread gravel to form a lower seal layer, lay The lower layer of foamed asphalt warm recycled mixture is 8cm thick, and the upper layer of foamed asphalt warm rubber asphalt mixture is laid 4cm thick.

[0064] 1 Cement-stabilized slag-soil subbase mix design and production construction technology

[0065] 1.1 Cement-stabilized muck subbase mix design

[0066] Take certain technical measures to eliminate the variability of muck. When sampling, use a loader to select samples from different piles and stack them together, ...

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Abstract

The invention belongs to the technical field of road engineering and specifically relates to a recycled pavement structure and a road construction process thereof. The recycled pavement structure comprises base courses and surface courses. The base courses include the cement stabilized muck subbase course, the cement stabilized recycled aggregate base course and the foamed asphalt cold-recycled mixture flexible base course which are arranged from bottom to top. The surface courses include the warm-mixed recycled asphalt mixture lower surface course and the warm-mixed rubber asphalt mixture upper surface course. Through the recycled pavement structure, large-scale and high-value utilization of construction waste recycled materials can be realized, the recycling rate of construction waste reaches up to 95% or more, the utilization ratio of recycled aggregate can reach up to 100%, and the ratio of the recycled materials in an overall pavement structure can reach up to 80%-90%. Comprehensive recycling on solid waste such as construction waste is realized, and the requirements of relevant specifications are met. There is no need to conduct degrading utilization on the recycled aggregate. The effects of energy conservation and emission reduction are achieved. The environment is protected. Exploitation and consumption of new aggregated rocks can be reduced. The construction funds canbe saved.

Description

technical field [0001] The invention belongs to the technical field of road engineering, in particular to a regenerative pavement structure and its road construction technology. Background technique [0002] With the acceleration of urbanization, the amount of construction waste generated and discharged is also increasing rapidly. According to statistics, the amount of construction waste produced in the process of urban construction in my country has accounted for 40% of the total amount of urban waste, and it is still increasing year by year. The phenomenon of "garbage siege" has appeared in many places. Construction waste is a kind of solid waste with resourceful properties. After resource disposal, more than 95% of construction waste can be used as raw materials in engineering construction, forming a virtuous circle of sustainable development. In developed countries, the resource utilization rate of construction waste has reached more than 90%. However, the resource uti...

Claims

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Application Information

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IPC IPC(8): E01C7/32E01C19/10E01C19/48
CPCE01C7/32E01C19/10E01C19/1004E01C19/48Y02A30/30
Inventor 吴英彪石津金刘金艳董文红王秀稔曹军想张瑜董继业孟令宇李洪胜赵雯张培良代广越刘智
Owner 沧州市市政工程股份有限公司
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