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Additive for asphalt mixture, asphalt mixture and preparation method thereof

A technology for asphalt mixtures and additives, applied in the field of additives for asphalt mixtures, asphalt mixtures and their preparation, can solve the problems of unsatisfactory distribution of nano-oxides, etc., and achieve enhanced road performance, easy agglomeration, and reduced damage Effect

Active Publication Date: 2019-08-23
CHANGSHA UNIVERSITY OF SCIENCE AND TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] For the deficiencies in the prior art, one of the purposes of the present invention is to provide additives for asphalt mixture and preparation method thereof, to solve the problem of unsatisfactory distribution of nano-oxides in asphalt mixture; the second purpose of the present invention To provide asphalt mixture and its preparation method

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Configure the following raw materials: 4.6wt% of SBS modified asphalt, 86.9wt% of aggregate, 4.3wt% of mineral powder, and 4.2wt% of additives (composed of nano-zinc oxide and lake asphalt, the mass ratio is 2:25). The specific preparation steps of the asphalt mixture are: 1), add asphalt and additives and heat up to 160-180°C, and stir for 10 minutes; 2), control the temperature at 160-180°C, add aggregates to the asphalt mixture in step 1), Mix for 5 minutes; then add mineral powder and mix for 90 seconds to obtain a high-performance asphalt mixture.

[0034] Wherein, the preparation method of the additive comprises the following steps: adding nano-zinc oxide into a surfactant (sodium fatty alcohol ether sulfate), stirring for 10 minutes, washing, and drying to obtain surface-modified nano-oxides. The nano-oxide is placed in the lake pitch in the molten state, sheared at a high speed for 30 minutes, and the rotation speed is 4000r / min, and finally the additive is obta...

Embodiment 2

[0036] Configure the following raw materials: SBS modified asphalt 5.1wt%, aggregate 87.7wt%, mineral powder 4.3wt%, additive (composition of nano-titanium oxide and lake asphalt, mass ratio is 2:25) 2.9wt%. The specific preparation steps of the asphalt mixture are: 1), add asphalt and additives and heat up to 160-180°C, and stir for about 10 minutes; 2), control the temperature at 160-180°C, and add aggregates to the asphalt mixture in step 1) , and mix for about 5 minutes; then add mineral powder and mix for 90 seconds to obtain a high-performance asphalt mixture.

[0037] Wherein, the preparation method of the additive comprises the following steps: adding nano-titanium oxide into a surfactant (sodium fatty alcohol ether sulfate), stirring for 10 minutes, washing, and drying to obtain a surface-modified nano-oxide, the The nano-oxide is placed in the lake pitch in the molten state, sheared at a high speed for 30 minutes, and the rotation speed is 4000r / min, and finally the ...

Embodiment 3

[0039] The raw materials of the following composition are configured: 4.0wt% of SBS modified asphalt, 87.3wt% of aggregate, 4.5wt% of mineral powder, and 3.5wt% of additive (composition of nano-cerium oxide and lake asphalt). The specific preparation steps of the asphalt mixture are: 1), add asphalt and additives and heat up to 160-180°C, and stir for about 10 minutes; 2), control the temperature at 160-180°C, and add aggregates to the asphalt mixture in step 1) , and mix for about 5 minutes; then add mineral powder and mix for 90 seconds to obtain a high-performance asphalt mixture.

[0040] Wherein, the preparation method of the additive comprises the following steps: adding nano-cerium oxide into a surfactant (sodium fatty alcohol ether sulfate), stirring for 10 minutes, washing, and drying to obtain surface-modified nano-oxides. The nano-oxide is placed in the lake pitch in the molten state, sheared at a high speed for 30 minutes, and the rotation speed is 4000r / min, and f...

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Abstract

The invention relates to an additive for an asphalt mixture, an asphalt mixture and a preparation method thereof. According to the ratio, the asphalt and the additive are heated to 160-180 DEG C, themixing is performed, and the stirring is performing for 5-15 min to obtain a molten material; an aggregate is added into the molten material, and the stirring and mixing is performing for 2-10 min toobtain the asphalt mixture; and preferably, during the stirring and mixing period, the temperature of the molten material is maintained at 160-180 DEG C. A nano-oxide is added in the form of the additive, and the dispersibility of the nano-oxide in the asphalt mixture can be improved, so that the uniformity of the distribution of the components in the asphalt mixture is improved, and the road performance of the paved asphalt pavement is improved.

Description

technical field [0001] The present invention relates to additives for asphalt mixture, asphalt mixture and preparation method thereof. Background technique [0002] Asphalt mixture is a pavement construction material mixed with asphalt, mineral powder, coarse and fine aggregate and binder, and is usually used as a material for road construction and maintenance. Due to the rapid development of road engineering in my country in recent years, the requirements for the quantity and especially the quality of asphalt mixture are getting higher and higher. However, in some areas at present, especially in mountainous areas with bad weather, the asphalt pavement suffers from the joint action of the environment and the load, and the asphalt pavement has a series of diseases such as deformation and cracking. [0003] In view of the above problems, a series of measures such as modifiers are commonly used in asphalt mixtures in the prior art to improve the performance and prolong the lif...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B26/26
CPCC04B26/26C04B2111/0075C04B18/12C04B14/28C04B14/30C04B24/16C04B24/36
Inventor 谢军詹易群黄拓吴昱林王一帆
Owner CHANGSHA UNIVERSITY OF SCIENCE AND TECHNOLOGY
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