Hot-recycling asphalt mixture containing non-traditional oil and preparation method of hot-recycling asphalt mixture

A technology for non-traditional grease and asphalt mixture, applied in the field of non-traditional grease thermally regenerated asphalt mixture and its preparation, can solve the problem of unsatisfactory high and low temperature performance of mineral oil regenerated asphalt, expensive ARA regenerant, poor regeneration effect of mixture, etc. problems, achieving significant socio-economic and environmental benefits, ease of implementation, and reduced application effects

Active Publication Date: 2016-07-27
WUHAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Cold recycling technology has the advantages of saving resources, reducing pollution, and convenient construction. However, the regeneration effect of the mixture is poor and the paving and rolling time is long. Therefore, most of the asphalt mixture hot recycling technology is used in practical applications.
[0006] Chinese patent CN101654347A "A plant-mixed heat-recycled asphalt mixture" proposes to prepare heat-regenerated asphalt mixture with waste asphalt mixture, new aggregate, new asphalt, filler and ARA regenerant, but ARA regenerant is expensive and its flash Low point, poor construction safety
Chinese patent CN101041574A "Old Asphalt Pavement Regeneration Additive and Its Method for Preparing Regenerated Asphalt Pavement Mixture" proposes to prepare rejuvenating agent with tung oil, mineral oil and rosin resin to regenerate asphalt pavement mixture, but the high and low temperature performance of mineral oil regenerated asphalt is poor. Not ideal, and tung oil has certain toxicity, which is harmful to human health

Method used

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  • Hot-recycling asphalt mixture containing non-traditional oil and preparation method of hot-recycling asphalt mixture
  • Hot-recycling asphalt mixture containing non-traditional oil and preparation method of hot-recycling asphalt mixture
  • Hot-recycling asphalt mixture containing non-traditional oil and preparation method of hot-recycling asphalt mixture

Examples

Experimental program
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Effect test

Embodiment 1

[0035] Non-traditional grease thermally recycled AC-25 asphalt mixture, applied to the lower layer, is prepared from waste asphalt mixture, new aggregate, new asphalt and non-traditional grease regenerant (by compounding, heating, and mixing processes). Waste and old asphalt mixture accounts for 50% of the total mass of waste and old asphalt mixture, new aggregate, new asphalt and non-traditional oil rejuvenator, and new asphalt accounts for the total mass of waste and old asphalt mixture, new aggregate, new asphalt and non-traditional oil rejuvenator 1.5% of non-traditional grease rejuvenators accounted for 3% of the bitumen mass in waste asphalt mixture.

[0036] According to the requirements of "Code for Design of Highway Asphalt Pavement" (JTGD50-2006), waste asphalt mixture, coarse aggregate, fine aggregate and filler in new aggregate are graded and synthesized. The synthetic gradation is shown in Table 1.

[0037] Table 1 AC-25 screening and synthesis gradation

[0038]...

Embodiment 2

[0054] Non-traditional oil heat recycled AC-20 asphalt mixture, applied to the middle surface layer, prepared from waste asphalt mixture, new aggregate, new asphalt and non-traditional oil rejuvenator (by compounding, heating, mixing process) . Waste and old asphalt mixture accounts for 40% of the total mass of waste and old asphalt mixture, new aggregate, new asphalt and non-traditional oil rejuvenator, and new asphalt accounts for the total mass of waste and old asphalt mixture, new aggregate, new asphalt and non-traditional oil rejuvenator 1%, non-traditional grease rejuvenators accounted for 2% of the bitumen mass in waste asphalt mixture.

[0055] According to the requirements of "Code for Design of Highway Asphalt Pavement" (JTGD50-2006), the waste asphalt mixture, the coarse and fine aggregates and fillers in the new aggregate are graded and synthesized. The synthetic gradation is shown in Table 2.

[0056] Table 2 AC-20 screening and synthesis gradation

[0057]

...

Embodiment 3

[0073] Non-traditional grease heat recycled AC-16 asphalt mixture, applied to the upper layer, is prepared from waste asphalt mixture, new aggregate, new asphalt and non-traditional grease regenerant (by compounding, heating, and mixing processes). Waste and old asphalt mixture accounts for 30% of the total mass of waste and old asphalt mixture, new aggregate, new asphalt and non-traditional oil rejuvenator, and new asphalt accounts for the total mass of waste and old asphalt mixture, new aggregate, new asphalt and non-traditional oil rejuvenator 2%, non-traditional grease rejuvenators accounted for 1% of the bitumen mass in waste asphalt mixture.

[0074] According to the requirements of "Code for Design of Highway Asphalt Pavement" (JTGD50-2006), the waste asphalt mixture, the coarse and fine aggregates and fillers in the new aggregate are graded and synthesized. The synthetic gradation is shown in Table 3.

[0075] Table 3 AC-16 screening and synthesis gradation

[0076] ...

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Abstract

The invention belongs to the field of utilization of non-traditional resources in the field of environmental protection and discloses a hot-recycling asphalt mixture containing non-traditional oil. The hot-recycling asphalt mixture is characterized by being prepared from a waste asphalt mixture, new aggregate, new asphalt and a non-traditional oil regeneration agent, wherein the waste asphalt mixture accounts for 30%-60% of the total mass of the waste asphalt mixture, the new aggregate, the new asphalt and the non-traditional oil regeneration agent, the new aggregate accounts for 38%-68% of the total mass of the waste asphalt mixture, the new aggregate, the new asphalt and the non-traditional oil regeneration agent, and the new asphalt accounts for 1%-2% of the total mass of the waste asphalt mixture, the new aggregate, the new asphalt and the non-traditional oil regeneration agent; the non-traditional oil regeneration agent accounts for 1%-3.5% of the mass of waste asphalt in the waste asphalt mixture. The implementing process of the mixture is simple, the regeneration effect is good, and the hot-recycling asphalt mixture is economical and environment-friendly.

Description

technical field [0001] The invention belongs to the field of utilization of non-traditional resources in the field of environmental protection, and in particular relates to a non-traditional oil thermal regeneration asphalt mixture and a preparation method thereof. Background technique [0002] Non-traditional resources refer to resources that have not been discovered or industrially developed and utilized under the constraints of economic, technological and environmental factors. With the development of science and technology, human beings are also increasing their efforts to develop natural resources. Traditional resources, as non-renewable resources, are nearly exhausted. The development and utilization of non-traditional resources has become an important means to alleviate the shortage of resources. [0003] Asphalt materials are widely used in high-grade highway construction because of their excellent road performance. However, with the rapid development of highway tra...

Claims

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Application Information

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IPC IPC(8): C04B26/26C04B20/00
CPCC04B20/0076C04B26/26C04B2201/50C04B18/16C04B18/18C04B18/12C04B14/02C04B18/141C04B14/068C04B14/06C04B18/021C04B22/064C04B18/08
Inventor 陈美祝张东吴少鹏柳景祥郑军林泉
Owner WUHAN UNIV OF TECH
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