Warm-mixing regenerated asphalt and preparation method thereof

A technology of recycled asphalt and warm mix regenerant, which is applied in building thermal insulation materials, building components, buildings, etc., can solve the problems of high mixing temperature, impact on road performance, low regeneration ratio, etc. The effect of increased utilization

Inactive Publication Date: 2014-12-10
BEIJING UNIVERSITY OF CIVIL ENGINEERING AND ARCHITECTURE +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The warm-mix recycled asphalt mixture of this invention uses sulfur as an additive. Although the price is low, the mixing

Method used

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  • Warm-mixing regenerated asphalt and preparation method thereof
  • Warm-mixing regenerated asphalt and preparation method thereof
  • Warm-mixing regenerated asphalt and preparation method thereof

Examples

Experimental program
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Effect test

Example Embodiment

[0068] Example one:

[0069] A warm-mix regenerated asphalt is formed by mixing asphalt and a composite warm-mix regenerant. The asphalt is the new asphalt. The mass of the asphalt binder is 10000g, of which the content of new asphalt is 70%, that is 7000g, and the content of aged asphalt is 30%, that is 3000g. The composite warm-mix regenerating agent includes surfactant and oil regenerating agent. Surfactant is fatty acid glyceride, which is yellow, transparent, liquid substance at room temperature; oil regenerant is the extracted oil when refining lubricating oil, which is dark yellow, viscous liquid substance at room temperature.

[0070] The preparation of the above composite warm-mix regenerant includes the following steps:

[0071] (1) Weigh the fatty acid glycerides and the extracted oil from the refined lubricating oil according to a certain ratio.

[0072] The addition amount of fatty acid glycerides is 0.5% of the mass of asphalt binder, namely P Fatty acid glycerides =...

Example Embodiment

[0079] Embodiment two:

[0080] A warm-mix regenerated asphalt is formed by mixing asphalt and a composite warm-mix regenerant. The asphalt is the new asphalt. The mass of asphalt binder is 10000g, among which the content of new asphalt is 60%, that is 6000g, and the content of aged asphalt is 40%, that is 4000g. The composite warm-mix regenerating agent includes surfactant and oil regenerating agent. The surfactant is the fatty acid sorbitan, which is a yellow, transparent, liquid substance at room temperature; the oil regenerating agent is heavy oil, which is a dark yellow, viscous liquid substance at room temperature.

[0081] The preparation of the above composite warm-mix regenerant includes the following steps:

[0082] (1) Weigh the fatty acid sorbitan and heavy oil according to a certain ratio.

[0083] The addition amount of the fatty acid sorbitan is 0.6% of the mass of the asphalt binder, namely P Fatty acid sorbitan =(P 1 +P 2 )×A=10000×0.6%=60g; the experiment measure...

Example Embodiment

[0090] Embodiment three:

[0091] A warm-mix regenerated asphalt is formed by mixing asphalt and a composite warm-mix regenerant. The asphalt is the new asphalt. The mass of asphalt binder is 10000g, of which the content of new asphalt is 80%, that is 8000g, and the content of aged asphalt is 20%, that is 2000g. The composite warm-mix regenerating agent includes surfactant and oil regenerating agent. The surface active agent is polysorbate, which is a yellow, transparent, liquid substance at room temperature; the oil regenerating agent is lubricating oil, which is a dark yellow, viscous liquid substance at room temperature.

[0092] The preparation of the above composite warm-mix regenerant includes the following steps:

[0093] (1) Weigh polysorbate and lubricating oil according to a certain ratio.

[0094] The addition amount of polysorbate is 0.3% of the mass of asphalt binder, namely P Polysorbate =(P 1 +P 2 )×A=10000×0.3%=30g; the experiment measured that when the aged asphal...

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Abstract

The invention discloses a warm-mixing regenerated asphalt which is mixed from asphalt and a composite warm-mixing regenerant, wherein the composite warm-mixing regenerant is a surfactant-oil regenerant composite material. The warm-mixing regenerated asphalt has the advantages of favorable function effect, no pollution and low cost. The composite warm-mixing regenerant organically combines the warm-mixing agent with the regenerant to fully display the overall functions. The invention also discloses a preparation method of the warm-mixing regenerated asphalt, which comprises the following steps: heating the asphalt to mixing temperature; and adding the composite warm-mixing regenerant to the asphalt, and mixing. The preparation method is simple, and is implemented by directly adding the composite warm-mixing regenerant into the asphalt at one time and uniformly mixing; the mixing temperature is obviously lowered, thereby reducing the discharge of the harmful gas and lowering the cost; and the warm-mixing regenerated asphalt has favorable pavement performance.

Description

technical field [0001] The invention belongs to the technical field of road engineering materials, and relates to warm mixing technology and regeneration technology of pavement asphalt, in particular to warm mixing regenerated asphalt and a preparation method thereof. Background technique [0002] In recent years, the warm mixing technology and recycling technology of asphalt and asphalt mixture, as a new technology for asphalt pavement construction, has been paid more and more attention by people. [0003] The regeneration technology of asphalt pavement is to re-mix the old asphalt pavement with new asphalt pavement materials in a certain proportion after the pretreatment process of milling, recycling and screening, so that it can meet certain requirements. Excellent road performance and use it to re-pave the road surface technology. The traditional asphalt pavement regeneration technology is mainly heat-recycled asphalt mixture technology. The heat-regenerated asphalt mix...

Claims

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Application Information

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IPC IPC(8): C08L95/00C08K5/00C08K5/103C08K5/01
CPCY02A30/30
Inventor 徐世法索智金珊珊乐兴堃
Owner BEIJING UNIVERSITY OF CIVIL ENGINEERING AND ARCHITECTURE
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