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Warm-mixing epoxy asphalt mixture and preparation method thereof

A technology for warm mix epoxy asphalt and epoxy asphalt, which is applied in the field of asphalt mixture, can solve the problem that the degree of reaction between intermediates and aromatic hydrocarbon oil, the depth of reaction is not easy to control, and the high temperature stability or low temperature cracking resistance of asphalt mixture is affected. Reduce the viscosity or elongation of asphalt at 60°C to achieve the effect of improving Marshall stability, improving anti-aging performance and improving flexibility

Active Publication Date: 2017-05-10
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the preparation process of the warm mix agent, not only the reaction speed of the intermediate is slow, but also the activity of the intermediate is low, resulting in the degree of reaction between the intermediate and the aromatic oil, and the depth of reaction is not easy to control, and the obtained warm mix agent is unstable. , affecting the application effect in asphalt
In addition, if the warm mix agent is used in epoxy asphalt, there is also the problem of poor anti-aging performance
[0008] In the process of preparing flexible epoxy asphalt, warm mixing technology usually reduces the viscosity or elongation of asphalt at 60°C, thus affecting the high temperature stability or low temperature cracking resistance of asphalt mixture
Therefore, it is urgent to develop a method that can not only solve the problem of poor flexibility of epoxy asphalt, but also solve the problems of high and low temperature performance and aging resistance.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] (1) Preparation of warm mix agent

[0049] ①Weigh 100kg of coal gasification and then carry out the synthesis reaction of mixed alkanes, the carbon number of mixed alkanes is 30-60, heat the mixed alkanes to 480°C, add 0.3kg of catalyst anhydrous CuCl 2 , placed in a closed container, maintain this temperature and introduce 89 moles of chlorine gas, and feed nitrogen to keep the pressure of the reaction container at 3MPa, and react for 30 minutes to obtain intermediate-1;

[0050] ② Weigh 700kg of the oil extracted from the fourth line with an aromatics content of 70 wt%, and add 44.1kg of complex [Cu(NH 3 ) 4 ] SO 4 , placed in another airtight container and heated to 350°C, and kept stirring at this temperature for 180min to obtain the aromatic hydrocarbon complex component-1;

[0051] ③Add aromatic hydrocarbon complexing component-1 to the above-mentioned intermediate-1, make the temperature 400°C, fill with nitrogen to keep the pressure at 2MPa, and react at cons...

Embodiment 2

[0062] (1) Preparation of warm mix agent

[0063] ① Weigh 350 kg of mixed alkanes obtained by synthesis reaction after coal gasification, the mixed alkanes have a carbon number of 30 to 130, heat the mixed alkanes to 400 ° C, add 3.15 kg of catalyst anhydrous MnCl 2 , placed in a closed container, kept at this temperature, introduced 116 moles of chlorine gas, and fed nitrogen to keep the pressure of the reaction container at 5 MPa, and reacted for 60 minutes to obtain intermediate-2;

[0064] ②Weigh 100kg of catalytic cracking oil slurry with an aromatics content of 63 wt%, and add 1.9kg of complex K 4 [Fe(CN) 6 ], placed in another airtight container and heated to 270 ° C, stirred at this temperature for 120 min at a constant temperature to obtain aromatic complex component-2;

[0065] ③Add aromatic hydrocarbon complexing component-2 to the above-mentioned intermediate-2, make the temperature 350°C, fill with nitrogen to keep the pressure at 4MPa, and react at constant tem...

Embodiment 3

[0076] (1) Preparation of warm mix agent

[0077] ①Weigh 100kg of mixed alkanes obtained by synthetic reaction with natural gas as raw material, the carbon number of mixed alkanes is 70-90, heat the mixed alkanes to 440°C, add 0.6kg of catalyst anhydrous NiCl 2Put it in a closed container, maintain this temperature and introduce 31 moles of fluorine, and feed nitrogen to keep the pressure of the reaction container at 4MPa, and react for 45 minutes to obtain Intermediate-3;

[0078] ② Weigh 350kg of phenolic refined oil with an aromatics content of 78wt%, and add 16.4kg of complex [Ni(CO) 4 ], placed in another airtight container and heated to 310°C, and stirred at a constant temperature for 160min at this temperature to obtain aromatic complex component-3;

[0079] ③Add aromatic hydrocarbon complexing component-3 to the above-mentioned intermediate-3, make the temperature 375°C, fill with nitrogen to keep the pressure at 3MPa, and react at constant temperature for 90 minutes ...

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Abstract

The invention discloses a warm-mixing epoxy asphalt mixture and a preparation method thereof. The warm-mixing epoxy asphalt mixture comprises the following components by weight percentage: 4.0-6.0% of warm-mixing epoxy asphalt, 1.0-3.0% of ore powder, and 91.0-95% of an aggregate; wherein, the warm-mixing epoxy asphalt mixture comprises a component A, a component B, and a component C, wherein the component A is warm-mixing asphalt, the warm-mixing asphalt comprises a warm-mixing agent and a matrix asphalt; the component B is an epoxy resin composition; and the component C is a curing agent. The preparation method of the warm-mixing agent comprises the following steps: under the effect of a catalyst, high-molecular alkane is reacted with a halogen simple substance to obtain an intermediate; aromatic hydrocarbons oil and a complex are uniformly mixed to obtain an aromatic hydrocarbons complexation component; the aromatic hydrocarbons complexation component is added in the intermediate, under the catalysis effect of the complexation component, and the aromatic hydrocarbons complexation component and the intermediate are reacted to obtain the warm-mixing agent. The epoxy asphalt mixture has good Marshall stabilization degree, rut resistance and water damage resistance capabilities.

Description

technical field [0001] The invention relates to an asphalt mixture, in particular to a warm-mix epoxy asphalt mixture and a preparation method thereof. Background technique [0002] With the continuous increase of highway mileage, the number of highway bridges also increases. However, some problems have also been exposed. Among them, the diseases caused by the failure of the waterproof bonding layer between the pavement layers of the bridge deck and between the pavement layer and the panel account for a large proportion, which has caused people to pay attention to the bridge deck pavement materials. and craftsmanship. Epoxy asphalt obtained by adding epoxy resin to asphalt has a better effect as the bonding material between bridge decks. However, due to the high viscosity of epoxy asphalt, the construction temperature is required to be high during construction, and a certain operating time is required, so the construction difficulty is increased; in addition, after adding ...

Claims

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Application Information

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IPC IPC(8): C04B26/26C04B24/28C04B24/00
CPCC04B24/40C04B26/26C04B40/0039C04B2111/0075C04B24/281C04B14/42C04B14/40C04B24/302C04B24/26C04B24/023C04B24/008C04B24/02C04B24/00C04B24/121C04B24/28C04B18/141C04B40/0028Y02A30/30
Inventor 范思远陈保莲张静傅丽李志军宁爱民程国香
Owner CHINA PETROLEUM & CHEM CORP
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