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Road asphalt modifier and modified road asphalt, preparation method thereof and asphalt mixture

A road asphalt and modifier technology, which is applied in building insulation materials, building components, buildings, etc., can solve the problems of large change of asphalt ductility with temperature, poor asphalt ductility at low temperature, poor stability of asphalt pavement, etc., and achieve high additional Value utilization and large-scale utilization problems, the effect of cost reduction

Active Publication Date: 2016-10-19
CHNA ENERGY INVESTMENT CORP LTD +1
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0010] The purpose of the present invention is to overcome the problems of poor low-temperature ductility of modified road asphalt prepared from coal direct liquefaction residue, large change of asphalt ductility with temperature and poor stability of asphalt pavement obtained when used in asphalt mixture, and provide Road asphalt modifier and modified road asphalt and its preparation method and asphalt mixture

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  • Road asphalt modifier and modified road asphalt, preparation method thereof and asphalt mixture

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preparation example Construction

[0031] Although the road asphalt modifier obtained by mixing the above components evenly can have better performance than the prior art, but preferably, according to the second aspect of the present invention, a road asphalt modification provided by the present invention is provided The preparation method of the agent comprises: (1) heating the coal direct liquefaction residue, fly ash and water in the presence of an oxidizing agent, the heating temperature is 200-350°C, and the heating time is 15-120min; (2) Stir the petroleum heavy oil and the polymer at 30-200°C; (3) mix the residue obtained from the direct liquefaction of the modified coal obtained in the step (1) with the mixture obtained in the step (2), stir evenly and then cool to obtain road asphalt modified sex agent.

[0032] With respect to 100 parts by weight of the coal direct liquefaction residue, the content of heavy petroleum oil is 30-150 parts by weight, preferably, the content of heavy petroleum oil is 40-1...

Embodiment 1

[0053] This embodiment is used to illustrate the road asphalt modifier and modified road asphalt provided by the present invention and the preparation method thereof.

[0054] Road asphalt modifier:

[0055]1) Mix 100 parts by weight of coal direct liquefaction residue with 70 parts by weight of fly ash (average particle size of 5 μm, D95 particle size of 10 μm), add water, and heat at 250 ° C for 50 min in the presence of air. The humidity at the time is 95%RH, and then cooled to obtain the residue of direct liquefaction of modified coal;

[0056] 2) 140 parts by weight of catalytic cracking oil slurry (produced by Yanshan Petrochemical, ρ 20℃ =0.985g / ml, the content greater than 350°C distillation range is 76% by weight, the freezing point is 10.2°C, and the kinematic viscosity at 100°C is 14.78mm 2 ·s -1 ) and 20 parts by weight of SBR (SBR1712 produced by Fujian Petrochemical) were stirred and mixed for 2 hours at 60 ° C and 50 rpm to obtain a mixture;

[0057] 3) The ...

Embodiment 2

[0063] This embodiment is used to illustrate the road asphalt modifier and modified road asphalt provided by the present invention and the preparation method thereof.

[0064] Road asphalt modifier:

[0065] 1) Mix 100 parts by weight of coal direct liquefaction residue with 5 parts by weight of fly ash (average particle size of 4 μm, D95 particle size of 8 μm), add water, and heat at 200 ° C for 120 min in the presence of air. The humidity at the time is 85%RH, and then cooled to obtain the residue of direct liquefaction of modified coal;

[0066] 2) 50 parts by weight of catalytic cracking oil slurry (produced by Yanshan Petrochemical, ρ 20℃ =0.985g / ml, the content greater than 350°C distillation range is 76% by weight, the freezing point is 10.2°C, and the kinematic viscosity at 100°C is 14.78mm 2 ·s -1 ) and 20 parts by weight of SBR (SBR1712 produced by Fujian Petrochemical) were stirred and mixed for 3 hours at 50 ° C and 800 rpm to obtain a mixture;

[0067] 3) The ...

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Abstract

The invention discloses a road asphalt modifier and modified road asphalt, a preparation method thereof and an asphalt mixture. The road asphalt modifier contains modified coal direct liquefaction residue, a petroleum heavy oil component and a polymer. The modified coal direct liquefaction residue is obtained by the following method: heating a raw material containing direct coal liquefaction residue, fly ash and water in the presence of an oxidant at the temperature of 200-350 DEG C for 15-120 min, wherein relative to 100 parts by weight of direct coal liquefaction residue, the content of petroleum heavy oil component is 30-150 parts by weight, and the content of polymer is 10-70 parts by weight. The road asphalt modifier can improve the low temperature ductility of the road asphalt, and improve the stability of the asphalt mixture.

Description

technical field [0001] The invention relates to a road asphalt modifier containing the residue of direct liquefaction of modified coal, modified road asphalt prepared from the road asphalt modifier, and their preparation method, which are mixed with asphalt containing the modified road asphalt material. Background technique [0002] How to efficiently and rationally utilize coal direct liquefaction residue is the bottleneck restricting the development of current coal direct liquefaction technology. The development of economical and reasonable utilization technology of coal direct liquefaction residue can not only make full use of resources, avoid the waste of precious resources, but also reduce the impact on the environment. Moreover, it can effectively improve the economics of the direct coal liquefaction process and promote the development of direct coal liquefaction technology. [0003] With the development of my country's highway transportation, especially high-grade hi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L95/00C08L53/02C08L9/06C08L23/16C08L9/02C08L53/00C08L91/00C08K11/00C04B26/26
Inventor 张胜振宫晓颐赖世燿盛英刘均庆郑冬芳
Owner CHNA ENERGY INVESTMENT CORP LTD
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