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Hot-blended asphalt regenerant and preparation method thereof

An asphalt rejuvenating agent and solvent refining technology, used in building components, building insulation materials, buildings, etc., can solve the problems of insufficient regeneration depth and poor regeneration effect of aged asphalt, and achieve improved regeneration effect, effect and compatibility. Effect

Inactive Publication Date: 2020-07-28
SICHUAN ZHENGJIE SCI & TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a hot-mix asphalt rejuvenator and its preparation method to solve the technical problems in the prior art that the hot-mix asphalt rejuvenator has insufficient regeneration depth for aged asphalt and poor regeneration effect

Method used

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  • Hot-blended asphalt regenerant and preparation method thereof
  • Hot-blended asphalt regenerant and preparation method thereof
  • Hot-blended asphalt regenerant and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Preparation of hot trace asphalt rejuvenator:

[0030] 1.1 Raw materials, the amount of raw materials is shown in Table 1 below:

[0031] Table 1 Embodiment 1 raw material list:

[0032]

[0033] 1.2 Preparation method, comprising the following steps:

[0034] (1) Add solvent to refine the extracted oil and vacuum distillate slurry into the reactor, heat up to 110°C, and stir for 13 minutes;

[0035] (2) Add surfactant, antioxidant and anti-ultraviolet agent under stirring; then heat up to 155°C, mix and stir for 13 minutes;

[0036] (3) Add plasticizer and molecular cross-linking agent under stirring; then keep the temperature at 155°C and stir for 10 minutes;

[0037] (4) Raise the temperature to 190°C, add the penetrating agent; then stir at 190°C for 28 minutes; cool down to room temperature, and the finished hot asphalt rejuvenator is obtained.

Embodiment 2

[0039] Preparation of hot trace asphalt rejuvenator:

[0040] 2.1 Raw materials, the amount of raw materials is shown in Table 2 below:

[0041] Table 2 Embodiment 2 raw material list:

[0042]

[0043] 2.2 Preparation method, comprising the following steps:

[0044] (1) Add solvent to refine the extracted oil and vacuum distillate oil slurry into the reactor, heat up to 130°C, and stir for 10 minutes;

[0045] (2) Add surfactant, antioxidant and anti-ultraviolet agent under stirring; then raise the temperature to 170°C, and mix and stir for 10 minutes;

[0046] (3) Add plasticizer and molecular cross-linking agent under stirring; then keep the temperature at 170°C and stir for 5 minutes;

[0047] (4) Raise the temperature to 210°C, add the penetrating agent, then stir at 210°C for 20 minutes; cool down to room temperature, and then the finished hot asphalt rejuvenator is prepared.

Embodiment 3

[0049] Preparation of hot trace asphalt rejuvenator:

[0050] 3.1 Raw materials, the amount of raw materials is shown in Table 3 below:

[0051] Table 3 Embodiment 3 raw material list:

[0052]

[0053] 3.2 Preparation method, comprising the following steps:

[0054] (1) Add solvent to refine the extracted oil and vacuum distillate oil slurry into the reactor, heat up to 90°C, and stir for 15 minutes;

[0055] (2) Add surfactant, antioxidant and anti-ultraviolet agent under stirring; then heat up to 140°C, mix and stir for 15 minutes;

[0056] (3) Add plasticizer and molecular cross-linking agent under stirring; then keep the temperature at 140°C and stir for 15 minutes;

[0057](4) Raise the temperature to 170°C, add penetrating agent, and then stir at 170°C for 35 minutes; cool down to room temperature, and then the finished hot asphalt rejuvenator is prepared.

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Abstract

The invention provides a hot-blended asphalt regenerant and a preparation method thereof, and solves the technical problems of insufficient regeneration depth and poor regeneration effect of a hot-blended asphalt regenerant on aged asphalt in the prior art. The regenerant comprises the following components in parts by weight: 30-45 parts of solvent refining extract oil; 50 to 60 parts of vacuum distillate oil slurry; 0.5 to 2 parts of an antioxidant; 2-4 parts of an anti-ultraviolet agent; 1-2 parts of a penetrating agent; 3-5 parts of a molecular crosslinking agent; 2-3 parts of a surfactant;and 3-5 parts of plasticizer. The hot-blended asphalt regenerant can improve the performance of aged asphalt and the asphalt regeneration effect, the performance of a regenerated asphalt concrete pavement can be improved, and the service life of the asphalt concrete pavement can be prolonged.

Description

technical field [0001] The invention relates to an asphalt rejuvenator, in particular to a hot asphalt rejuvenator and a preparation method. Background technique [0002] Aged or damaged asphalt concrete can be regenerated through proper process, and the regeneration of asphalt is the reverse process of aging. Reuse the aggregate and asphalt in asphalt concrete; the asphalt in it is used as a thermoplastic bonding material, and its performance can be restored by adding rejuvenating agents, such as corn oil, lubricating oil, etc. After mixed with rejuvenator, the relative content of asphaltene is reduced, and the dissolving ability of soft asphaltene to asphaltene is improved, the compatibility of asphalt is improved, the penetration and ductility of asphalt are improved, and the performance is restored or close to the original. [0003] There are two theories on the mechanism of asphalt regeneration. One theory is "compatibility theory". This theory starts from chemical the...

Claims

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Application Information

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IPC IPC(8): C08L91/00C08L71/02C08L95/00C08K5/00C08K5/134C08K5/526C08K5/132C08K5/3435C08K5/42C08K5/12C08K5/521
CPCC08L91/00C08L95/00C08L2201/08C08L2205/025C08L2205/03C08L2205/035C08K5/00C08K5/1345C08K5/526C08K5/132C08K5/3435C08K5/521C08K5/12C08L71/02C08K5/42
Inventor 王俊武冯超
Owner SICHUAN ZHENGJIE SCI & TECH CO LTD
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