Asphalt pavement regeneration method

A technology for asphalt pavement and asphalt rejuvenating agent, which is applied in the field of asphalt pavement regeneration, can solve the problems of increasing the heat load of on-site construction units and the difficulty of operation, and achieves the effects of easy industrial application, low production cost and good stability

Active Publication Date: 2014-05-07
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method can effectively complete the regeneration of asphalt pavement, but in the construction process, it is necessary to heat a 5-ton asphalt tank with heat-conducting oil, use high-temperatu

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Disodium Cocoyl Monoethanolamide Sulfosuccinate (R is C 15 ) 0.5 parts, disodium fatty alcohol polyoxyethylene ether sulfosuccinate monoester (R is C 14 ) and 90.8 parts of water were added to the container, stirred and heated to 72°C, 0.2 parts of formic acid was added, and stirred at constant temperature for 0.5 hours to obtain an asphalt regenerant.

[0024] The old asphalt pavement is milled and crushed, and the old asphalt pavement material is recycled to the asphalt tank, heated to 150°C, and stirred evenly. Based on the quality of recycled asphalt mixture, add 10% stone (with a particle size of 10-30mm), 7% cement (with a particle size of less than 3mm), 0.6% ethyl diazoacetate and 0.5% azo to the asphalt tank Diformamide, stir evenly, add 8.5% asphalt regeneration agent and 4.5% hot-melt asphalt to the asphalt tank by spraying, and fully stir at 115°C to obtain the recycled asphalt mixture.

Embodiment 2

[0026] Disodium Cocoyl Monoethanolamide Sulfosuccinate (R is C 12 ) 5.5 parts, disodium fatty alcohol polyoxyethylene ether sulfosuccinate monoester (R is C 12 ) and 89.1 parts of water were added to the container, stirred and heated to 80°C, 0.9 parts of acetic acid was added, and stirred at constant temperature for 1 hour to obtain an asphalt regenerant.

[0027] The old asphalt pavement is milled and crushed, and the old asphalt pavement material is recycled to the asphalt tank, heated to 155°C, and stirred evenly. Based on the quality of recycled asphalt mixture, add 5% of stone (with a particle size of 10-30mm), 7% of machine-made sand (with a particle size of less than 3mm), 5% of azodicarbonamide, and 1% of alkane into the asphalt tank. Sodium alcohol ether carboxylate (R is 14, n=8), stir evenly, add 5.5% asphalt regenerant and 3% hot-melt asphalt into the asphalt tank by spraying, and fully stir at 125°C to obtain recycled asphalt mixture.

Embodiment 3

[0029] Disodium Cocoyl Monoethanolamide Sulfosuccinate (R is C 14 ) 9 parts, disodium fatty alcohol polyoxyethylene ether sulfosuccinate monoester (R is C 13 ) and 87.9 parts of water were added to the container, stirred and heated to 85°C, 2.4 parts of boric acid was added, and stirred at constant temperature for 1.5 hours to obtain an asphalt regenerant.

[0030] The old asphalt pavement is milled and crushed, and the old asphalt pavement material is recycled into the asphalt tank, heated to 160°C, and stirred evenly. Based on the quality of recycled asphalt mixture, add 2% cement (with a particle size of less than 3mm), 3.5% of stone materials (with a particle size of 10-30mm), and 5% sodium alkyl alcohol ether carboxylate (R is 16) to the asphalt tank. , n=6), 8.5% azobisisobutyronitrile, stir evenly, add 3% asphalt rejuvenator and 2% hot-melt asphalt into the asphalt tank by spraying, and stir fully at 135°C to get recycled asphalt mixture.

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Abstract

The invention discloses an asphalt pavement regeneration method. The asphalt pavement regeneration method comprises the following steps: (1) milling and crushing an old asphalt pavement, recycling materials of the old pavement to an asphalt tank, heating, and stirring uniformly; (2) adding inorganic binder and organic additive to mixture of step (1), and stirring uniformly; (3) uniformly stirring asphalt regenerant and hot melting asphalt added to the mixture of step (2) so as to obtain recycled asphalt mixture; (4) paving the recycled asphalt mixture, and compressing so as to complete regeneration of the asphalt pavement. The method is simple in process, good in regeneration effect, low in cost and suitable for industrial application. The method disclosed by the invention has wide prospect in the field of asphalt pavement regeneration.

Description

technical field [0001] The invention relates to a method for asphalt pavement regeneration. Background technique [0002] At present, more than 90% of high-grade highways in my country are constructed using semi-rigid materials as the base and subbase of asphalt pavement. According to the design life of asphalt pavement (15-20 years), many roads that have been built in my country will gradually enter the stage of repair and maintenance. If the traditional method is adopted, a large amount of waste asphalt mixture that has been milled and planed will be discarded. On the one hand, it will cause environmental pollution. , On the other hand, it is a great waste of resources. The regeneration technology of asphalt pavement is to re-mix the old asphalt pavement with regeneration agent, new asphalt materials, new mineral materials, etc. in a certain proportion after excavation, recycling, crushing and screening, so that it can meet certain road conditions. A suite of craft techno...

Claims

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Application Information

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IPC IPC(8): E01C23/06E01C19/10E01C19/08E01C7/26C08L95/00C08K13/02C08K5/20C08K5/11C08K5/09C08K5/092C08K3/34C08K3/24C08K3/38
Inventor 陈闯宁爱民李志军范思远张静
Owner CHINA PETROLEUM & CHEM CORP
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