Warm asphalt mixture and preparation method thereof

A technology of warm mix asphalt and mixture, applied in the direction of climate change adaptation, etc., can solve the problem of affecting the high temperature stability or low temperature cracking resistance of asphalt mixture, not giving the viscosity of the asphalt at 135 ℃ of the matrix asphalt, reducing the asphalt mixture. It can improve the low temperature cracking resistance, improve the softening point of asphalt, and improve the elongation of asphalt.

Active Publication Date: 2016-05-18
辽宁兆利高新路面材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But the 135°C viscosity of this asphalt composition is still very large, the 135°C viscosities in the examples are 675cp and 690cp, and the 135°C viscosity of the base asphalt and the bitumen without MA-g-PE as a comparison are not given Viscosity, it is impossible to know how much the mixing temperature has been reduced. Only from the given viscosity value of 135°C, the warm mixing effect has not been achieved.
[0013] In the preparation process of the existing warm mix asphalt mixture, while reducing the mixing temperature of the asphalt mixture, it usually affects the high temperature stability or low temperature cracking resistance of the asphalt mixture

Method used

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  • Warm asphalt mixture and preparation method thereof
  • Warm asphalt mixture and preparation method thereof
  • Warm asphalt mixture and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] Put the high molecular weight alkane with carbon number 40, molecular weight 562, and weight 100kg obtained after coal gasification into a closed container, and heat it to 250°C. Keep this temperature and introduce 89 moles of chlorine, and stir for 60 minutes. Obtain the intermediate; weigh 700kg of the four-line extracted oil with an aromatics content of 70%, put it in another airtight container and heat it to 70°C, add 4410g of anhydrous AlCl 3 , stirred for 45min. Then, the above-mentioned intermediate is sprayed into the oil extracted from the four-line extraction in a state of stirring. After all the spraying is carried out, the temperature is kept at 70° C., and the stirring reaction is carried out for 90 minutes to obtain the warm mixing agent used in the present invention. The distribution ratio of each group is shown in Table 1.

[0043] Weigh 7000g of the above-mentioned warm mix agent, add it to Shazhong Crude Oil No. 50 solvent deoiled asphalt with a weigh...

Embodiment 2

[0047] Put the high-molecular alkane obtained by the synthesis reaction after gasification of coal with a carbon number of 90, a molecular weight of 1262, and a weight of 350kg in a closed container, heat it to 370°C, and introduce 116 moles of chlorine while maintaining this temperature, and stir for 100 minutes. Obtain the intermediate; weigh 100kg of catalytic cracking oil slurry with an aromatics content of 63%, put it in another airtight container and heat it to 90°C, add 470g of anhydrous TiCl 4 , stirred for 35min. Then, the above-mentioned intermediate is sprayed into the catalytic cracking oil slurry in the form of mist under stirring, and after all the spraying is carried out, the temperature is kept at 90° C., and the stirring reaction is carried out for 160 minutes to obtain the warm mixing agent used in the present invention. The distribution ratio of each group is shown in Table 1.

[0048] Weigh 500g of the above-mentioned warm mix agent, add it to Liaohe Crude...

Embodiment 3

[0052] Put high-molecular alkane with 100 carbons, 1302 molecular weight and 100kg weight in a closed container, heated to 325°C, and introduce 31 moles of fluorine at this temperature, and stir for 120 minutes. Obtain the intermediate; weigh 350kg of phenolic refined extract oil with an aromatics content of 78%, put it in another airtight container and heat it to 110°C, add 1230g of anhydrous SbCl 3 , stirred for 40min. Then spray the above-mentioned intermediate into the phenol refined extraction oil in the form of mist under stirring. After spraying all the mixture, keep the temperature at 110°C and stir for 135 minutes to obtain the warm mixing agent used in the present invention. The distribution ratio of each group is shown in Table 1.

[0053] Weigh 4000g of the above-mentioned warm mix agent, add it to Tahe Crude Oil No. 70 blended asphalt with a weight of 100kg and a temperature of 150°C, and stir for 50 minutes to obtain the warm mix asphalt (code WB-3) used in the ...

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Abstract

The invention discloses a warm-mix asphalt mixture. The warm-mix asphalt mixture comprises the following components in percentage by mass: 4.0-6.0% of warm-mix asphalt, 1.0-3.0% of mineral powder and 91.0-95.0% of aggregate; the warm-mix asphalt is prepared by the warm-mix agent. The warm-mix agent is prepared by the high polymer alkane, halogen, aromatic oil and catalyst. The dosage of the halogen is 0.3-0.5 times of the mole number of the high polymer alkane. The weight ratio of the high polymer alkane and the aromatic oil is (1-7):(7-1). The dosage of the catalyst is 0.3-0.9% of the content of the arene in the aromatic oil. The mixing and forming temperature can be reduced for the warm-mix asphalt mixture, the harmful gas generation amount is reduced, the warm-mix asphalt mixture is friendly to the environment, and the high and low temperature performance of the asphalt mixture can be improved.

Description

technical field [0001] The invention relates to a warm asphalt mixture and a preparation method thereof. Background technique [0002] The asphalt mixture used in road engineering in the past is generally divided into two types according to the mixing construction temperature: cold mix asphalt mixture CMA (ColdMixAsphalt) and hot mix asphalt mixture HMA (HotMixAsphalt). Cold-mix asphalt mixture is generally mixed and paved with emulsified asphalt or liquid asphalt and aggregate at room temperature, without heating the aggregate and binder, which can save a lot of energy. However, the initial strength of cold-mix asphalt mixture is low, and it is difficult to meet the requirements of important projects such as expressways and heavy-duty traffic roads. Hot mix asphalt mixture is widely used and has good road performance. However, in the production process of hot mix asphalt mixture, asphalt and stone materials need to be mixed under high temperature conditions of 150~180°C. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B26/26C04B14/04
CPCY02A30/30
Inventor 金晓铭
Owner 辽宁兆利高新路面材料有限公司
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