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Asphalt regenerant and preparation method thereof

A technology of asphalt regeneration agent and softener, which is applied in building components, building insulation materials, buildings, etc., can solve the problems of performance degradation and excessive addition of old asphalt mixtures.

Inactive Publication Date: 2021-02-09
北京路德永泰环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The invention provides an asphalt rejuvenator and a preparation method thereof, in order to solve the problem in the prior art that the performance of the old asphalt mixture will decline when the ratio of the old asphalt mixture is added to a higher proportion

Method used

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  • Asphalt regenerant and preparation method thereof
  • Asphalt regenerant and preparation method thereof
  • Asphalt regenerant and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] The asphalt rejuvenator, in parts by weight, includes 100 parts of softener, 2 parts of elastomeric polymer, 25 parts of linearizing reactive rubber (RR), 3 parts of surfactant and 2 parts of anti-stripping agent.

[0025] Wherein the softener is one of soybean oil, dioctyl phthalate, naphthenic oil, reduced tertiary oil or rich aromatics; the elastomeric polymer is one of SBS, SBR, SIS or butadiene rubber; The surfactant is one of sodium dodecyl sulfonate, glyceryl stearate, polyoxyethylene alkylamine or long-chain fatty alcohol polyoxyethylene ether; the anti-stripping agent is p-aminobenzamide, m-amino One of benzylamine, silane coupling agent or sodium lignosulfonate.

[0026] Among them, linearized reactive rubber (RR) can be prepared by the following three methods:

[0027] Method 1: Refer to the "Method for Preparing Linearized Active Rubber Using Waste Rubber" published by the patent application number: 201711122422.6.

[0028] Method 2: using a twin-screw met...

Embodiment 2～9

[0035] Embodiment 2~9 and comparative example 1~4:

[0036] The difference from Example 1 is only that the composition ratio is different, and the specific composition ratio is shown in Table 1.

[0037] Table 1 is the composition ratio of Examples 2~9 and Comparative Examples 1~4

[0038] softener Elastomeric polymer RR Surfactant Anti-stripping agent Example 1 100 2 25 3 2 Example 2 100 1 25 3 2 Example 3 100 5 25 3 2 Example 4 100 2 15 3 2 Example 5 100 2 30 3 2 Example 6 100 2 25 0.5 2 Example 7 100 2 25 5 2 Example 8 100 2 25 3 0.5 Example 9 100 2 25 3 5 Comparative example 1 100 5 0 0 0 Comparative example 2 100 2 0 3 2 Comparative example 3 100 2 25 0 2 Comparative example 4 100 2 25 3 0

Embodiment 10

[0040] The difference with Example 1 is that in Example 10, the preparation method step S3 adopts a special stirring device, combined with figure 1 and figure 2 As shown, the special mixing equipment includes a horizontally fixed mixing drum, the left end of the mixing drum is provided with an inlet, and the right end is provided with an outlet. The stirring drum is connected with a stirring shaft 10 in rotation, wherein the stirring shaft 10 is hollow, and the two sides of the stirring shaft 10 Both ends are connected to pipes through rotary joints, and a number of stirring blades 11 are fixed on the stirring shaft 10. The heating medium (gas, water, liquid metal, etc.) flows through the stirring shaft 10 through the pipes, thereby heating the stirring shaft 10 and the stirring blades 11. A driving mechanism for driving the stirring shaft 10 to rotate is also provided.

[0041] A connecting rod 12 is slidably connected in the stirring shaft 10, and the connecting rod 12 is ...

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Abstract

The invention relates to the technical field of asphalt regeneration, and particularly discloses an asphalt regenerant and a preparation method thereof. The asphalt regenerant is prepared from 100 parts of softener, 1-5 parts of elastomeric polymer, 15-30 parts of linearized active rubber, 0.5-5 parts of surfactant and 0.5-5 parts of anti-stripping agent. The linearized active rubber added in thepatent has part of characteristics of high-molecular polymers and part of characteristics of organic adhesives (components with small molecular weights); under the combined action with the elastomericpolymer, the cohesive force between an old material and a new material is improved, the wrapping cohesive force between new asphalt and the old material is improved, and the high and low temperatureperformance of the recycled asphalt mixture can be obviously improved; and the old material is added in a large proportion, and the performance of the pavement asphalt mixture is not influenced.

Description

technical field [0001] The invention relates to the technical field of asphalt regeneration, in particular to an asphalt regeneration agent and a preparation method thereof. Background technique [0002] Road asphalt is affected by the wheel load and natural factors. After a period of service, the properties of asphalt and aggregate in the road asphalt mixture will undergo physical and chemical changes, and finally manifest as the viscosity of the asphalt in the asphalt mixture increases. Aging and refinement of aggregates. After the asphalt is affected by natural factors in the pavement, the asphalt components will "migrate", that is, the asphaltene will increase accordingly, which will lead to asphalt aging and viscosity increase, resulting in the decline of asphalt performance, and finally the occurrence of pavement diseases. [0003] The recycling of road asphalt and asphalt mixture means that the old asphalt mixture is milled out from the road surface and mixed with re...

Claims

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Application Information

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IPC IPC(8): C08L95/00C08L91/00C08L53/02C08L9/06C08L9/00C08L17/00C08L71/02C08K5/12C08K5/42C08K5/103C08K5/20C08K5/54
CPCC08L95/00C08L2205/035C08L91/00C08L53/02C08L9/06C08L9/00C08L17/00C08L71/02C08K5/12C08K5/42C08K5/103C08K5/20C08K5/54
Inventor 董大伟江宽刘双旺董进学马庆杰颜亮武晋巍
Owner 北京路德永泰环保科技有限公司
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