Warm mix regenerant for asphalt pavement and its preparation method and use method

A technology of warm-mix regenerant and asphalt pavement, which is applied in the direction of sustainable waste treatment, solid waste management, and climate sustainability. Life and other issues, to achieve the effect of reducing mixing energy consumption and mechanical loss, prolonging the construction adaptation time, and prolonging the compaction time

Inactive Publication Date: 2011-12-21
CCCC FIRST HIGHWAY CONSULTANTS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among these two regeneration technologies, the production and construction process of the factory-mixed hot recycling technology and the factory-mixed cold recycling technology are relatively easy to control, so the use effect is relatively good, but there are also serious shortcomings.
In the process of plant-mixed cold recycling, the strength of the cold recycled mixture takes a long time to form; generally, a certain thickness of overlay is required; the performance of the mixture obtained by cold recycling is poorer than that of the hot mix asphalt mixture, and the generally used layer The lower level; cold mix technolog

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Preparation method: 15 parts of long-chain alkanes and naphthenes, 10 parts of high-oil pitch, 15 parts of furfural extraction oil, 5 parts of fatty acid polyethylene glycol ester, 1 part of dioctyl isophthalate, 5 parts of polypropylene and two After mixing 1 part of benzophenone, stir evenly, heat to 100°C and melt to form a uniform substance, and then cool to form a paste-like regeneration agent.

[0038] Method 1: When plant mixing and regenerating, heat the old milled asphalt mixture to 120°C, put it into the mixing pot together with the pasty regeneration agent obtained in step 1, and mix the old asphalt mixture. The addition amount is 99.95%, the addition amount of paste regeneration agent is 0.05%, and the mixing time is 50 seconds.

[0039] Use method 2: When regenerating on site, spray the regenerant evenly on the asphalt pavement, and the spraying amount is 0.05Kg / m 2 , 0.5h after the spraying is completed, in-situ regeneration is carried out.

[0040] Meth...

Embodiment 2

[0042] Preparation method: 25 parts of long-chain alkanes and cycloalkanes, 11 parts of high-oil pitch, 25 parts of furfural extraction oil, 6 parts of fatty acid polyethylene glycol ester, 2 parts of dioctyl isophthalate, 6 parts of polypropylene and two After mixing 2 parts of benzophenone, stir evenly, heat to 110°C and melt to form a homogeneous substance, then cool to form a paste regenerant.

[0043] Use method 1: When plant mixing and regenerating, mix the milled old asphalt mixture, new stone and new asphalt, heat it to 125°C, and put it into the mixing pot together with the paste regeneration agent obtained in step 1. Combined, the amount of old asphalt mixture is 80%, the addition of new stone is 18.85%, the amount of new asphalt is 1%, the amount of paste rejuvenator is 0.15%, and the mixing time is 50 seconds.

[0044] Method 2: When regenerating in situ, spray the regenerant evenly on the asphalt pavement, and the spraying amount is 0.29Kg / m 2 , 1h after the spra...

Embodiment 3

[0047] Preparation method: 35 parts of long-chain alkanes and cycloalkanes, 12 parts of high oil pitch, 35 parts of furfural extraction oil, 7 parts of fatty acid polyethylene glycol ester, 3 parts of dioctyl isophthalate, 7 parts of polypropylene and two After mixing 3 parts of benzophenone, stir evenly, heat to 120°C and melt to form a homogeneous substance, then cool to form a paste-like regeneration agent.

[0048] Use method 1: When plant mixing and regenerating, mix the milled old asphalt mixture, new stone and new asphalt, heat it to 130°C, and put it into the mixing pot together with the paste regeneration agent obtained in step 1 for mixing Combined, the amount of old asphalt mixture is 60%, the amount of new stone is 37.75%, the amount of new asphalt is 2%, the amount of paste regenerant is 0.25%, and the mixing time is 60 seconds.

[0049] Method 2: When regenerating in situ, spray the regenerant evenly on the asphalt pavement, and the spraying amount is 0.53Kg / m 2...

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PUM

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Abstract

The invention relates to an asphalt pavement warm-mix regeneration agent, a preparation method and a use method thereof. In the asphalt pavement regeneration technology, the heating temperature of the hot regeneration technology is high, and it is easy to age again when mixed with the old asphalt pavement material, and the old material parameter is small; the cold regeneration technology takes a long time to form the strength of the mixture and needs to add cement, which reduces the durability . The asphalt pavement warm-mix rejuvenator of the present invention has the following formula: 15-60 parts of long-chain alkanes and naphthenes, 10-15 parts of high-oil asphalt, 15-60 parts of furfural extraction oil, 5-10 parts of dispersant, plasticizer 1-5 parts, 5-10 parts of toughening agent and 1-5 parts of anti-aging agent are mixed and melted, mixed with milled asphalt mixture old material, new stone material and new asphalt at a temperature of 120-150 ° C. The present invention increases the parameters of old asphalt pavement materials to more than 50%, and controls the mixing temperature in the warm zone, which not only reduces mixing energy consumption and mechanical loss, but also effectively reduces the aging degree of asphalt pavement and improves the old asphalt pavement. The utilization rate of materials; the traffic can be opened faster.

Description

technical field [0001] The invention belongs to the technical field of asphalt mixture manufacture, and in particular relates to a warm-mix regenerant for asphalt pavement, a preparation method and a use method thereof. Background technique [0002] Asphalt pavement recycling technology can be divided into hot recycling technology and cold recycling technology. Hot recycling technology is mainly used to restore the bonding properties of aged asphalt, and recycle asphalt and aggregates after reusing the role of asphalt as a binder; cold recycling technology is mainly to reuse the original road milling materials as aggregates. Among these two regeneration technologies, the production and construction process of the factory-mixed hot recycling technology and the factory-mixed cold recycling technology are relatively easy to control, so the use effect is relatively good, but there are also serious shortcomings. In the process of plant-mixed cold recycling, the strength of the c...

Claims

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Application Information

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IPC IPC(8): C04B24/36C04B18/16
CPCY02W30/91
Inventor 陈团结李永翔李智向豪王争军冯焘柯文豪张涛
Owner CCCC FIRST HIGHWAY CONSULTANTS
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