Regeneration technology for asphalt concrete pavement

A technology of asphalt concrete and craftsmanship, which is applied to the coagulation pavement, roads, roads and other directions of on-site paving, which can solve the problems of high regeneration cost, complicated restoration and regeneration process, and the inability of milling materials to meet the requirements of road paving, etc. problem, to achieve the effect of good recycling

Inactive Publication Date: 2016-08-03
BEIJING AURORA ENVIRONMENTAL PROTECTION SCITECH INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] However, in the above-mentioned documents and other existing technologies, either the reduction and regeneration process is too complicated, resulting in relatively high regeneration costs, or the recycled milling material cannot well meet the requirements of road paving

Method used

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  • Regeneration technology for asphalt concrete pavement
  • Regeneration technology for asphalt concrete pavement
  • Regeneration technology for asphalt concrete pavement

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] Preparation of concrete admixtures

[0051] The chemical structural formula of monomer (I) is:

[0052]

[0053] where R 1 is methyl, R 2 is an ethyl group, n is 5, and this monomer can be prepared by esterifying polyethylene glycol and methacrylic acid according to a conventional esterification method, and then reacting the esterification product with ethoxychloride according to a conventional elimination reaction, or it can be Commercially purchased directly from Sigma-Aldrich;

[0054] The chemical structural formula of monomer (II) is:

[0055] This monomer is also commercially available from Sigma-Aldrich;

[0056] Adopt emulsion polymerization method, add 80g monomer (I) and 12g monomer (II) and 200mL deionized water in the 500mL round-bottomed flask that has mechanical stirring device, nitrogen is led under stirring, then add 0.1g ammonium persulfate as The initiator is heated up to the polymerization temperature, the polymerization temperature is 80°C,...

Embodiment 2

[0058] Use the W2000 milling machine to mill the asphalt concrete pavement of the high-grade highway in Fangzhuo section. The thickness of the first layer of milling is 5cm, and the thickness of the second layer of milling is 10cm; the first layer of milling material is screened , collect the granules of 10-31.5mm, crush the granules larger than 31.5mm and sieve again to obtain the granules of 10-31.5mm, which are recorded as granules A; mix the obtained granules of 10-31.5mm with emulsified asphalt, cement and The electric slag is mixed and regenerated at a weight ratio of 90:1:2:5 to obtain a regenerated material, which is recorded as the first regenerated material, and the particles smaller than 10mm are collected for later use, and the particles are recorded as particle B; wherein, the electric slag The specific surface area is 1800m 2 / kg, the content of free calcium oxide is 3% by weight; the second layer of milling material is crushed, and the particles of 10-20mm are c...

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Abstract

The invention provides a regeneration technology for an asphalt concrete pavement. The technology includes the following steps that the asphalt concrete pavement is milled and planed, wherein the milling and planing thickness of the first layer is 2 cm to 6 cm, and the milling and planing thickness of the second layer is 7 cm to 10 cm; a milling and planing material of the first layer is screened, particles with the diameter ranging from 10 mm to 31.5 mm are mixed with emulsified asphalt, cement and electric furnace slag for regeneration; and a milling and planing material of the second layer is crushed, and particles with the diameter ranging from 10 mm to 20 mm are screened and collected and then mixed with fine grains of the milling and planing material of the first layer, the cement, common asphalt, lime and a concrete admixture for regeneration. By the adoption of the technology, the milling and planing materials can be fully recycled with the low cost, and meanwhile the road paving requirement can be well met.

Description

technical field [0001] The invention relates to a regeneration process of the milling material for the pavement surface layer, in particular to a regeneration process for the milling material of the asphalt concrete road surface. Background technique [0002] In recent years, with the rapid development of my country's highway industry, the mileage of expressways has become longer and longer. Some expressways built in the early days are facing overhaul or expansion, and how to use the damaged pavement surface, especially the asphalt surface, has gradually attracted people's attention. [0003] CN102359048A discloses a system for crushing and reusing waste milling materials and its process method, including a feed hopper, a feed belt, a return belt, a compound mill, an air cooler, a cyclone dust collector, and a wind bag for collecting materials. The feed hopper is connected to the feed port on the top of the compound mill through the feed belt, the side or bottom of the comp...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E01C7/26E01C7/18C04B28/00C04B18/16
CPCC04B28/00E01C7/187E01C7/26C04B18/167C04B24/36C04B18/141Y02W30/91
Inventor 梁超李建勇吴晟崔保磊
Owner BEIJING AURORA ENVIRONMENTAL PROTECTION SCITECH INST
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