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Emulsified asphalt and preparation method thereof

A technology of emulsified asphalt and emulsifier, which is applied in building components, building insulation materials, buildings, etc., can solve the problems of short service life, thin construction thickness and poor comprehensive performance of pavement, and achieve improved service life, strong bond strength, The effect of improving surface properties

Active Publication Date: 2017-06-09
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these technologies still have some deficiencies: gravel seal, slurry seal, and micro-surfacing technologies are all cold-mix and cold-paving technologies, but the construction thickness is thin, there is no rolling, the service life of the pavement is short, and the overall performance is poor. The driving noise is loud; the ultra-thin wear layer, although its performance is better, still belongs to the category of thermal construction maintenance, and there is a problem of high energy consumption

Method used

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  • Emulsified asphalt and preparation method thereof
  • Emulsified asphalt and preparation method thereof
  • Emulsified asphalt and preparation method thereof

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preparation example Construction

[0041] According to a preferred mode of the present invention, the preparation method of the emulsified asphalt comprises:

[0042] (1) In the presence of a compatibilizer and a stabilizer, the base asphalt is mixed with a polymer modifier to prepare a polymer modified asphalt at 170-180°C;

[0043] (2) Mix the emulsifier, anti-stripping agent and water to obtain a soap solution at 55-65°C, and adjust the pH value of the obtained soap solution to 1.8-2.2;

[0044] (3) Mixing and emulsifying the polymer modified bitumen obtained in step (1) and the soap liquid obtained in step (2).

[0045] According to the method of the present invention, the types of the base asphalt, polymer modifier, emulsifier, anti-stripping agent, stabilizer and compatibilizer are the same as those described above, and will not be repeated here. The amount of base asphalt, polymer modifier, emulsifier, anti-stripping agent, stabilizer, water and compatibilizer is such that the content of each component ...

Embodiment 1

[0053] This example is used to illustrate the emulsified asphalt and its preparation method according to the present invention.

[0054] The composition formula (by weight) of emulsified asphalt:

[0055]

[0056] Among them, the base asphalt is No. 70 road asphalt commercially purchased from Zhenhai Refining and Chemical Co., Ltd., with a penetration of 68.1; the polymer modifier is styrene-butadiene-styrene ternary compound commercially available from Yueyang Petrochemical Co., Ltd. (SBS791H). Copolymer, wherein, based on the total amount of styrene-butadiene-styrene terpolymer, the content of the structural unit formed by styrene is 30% by weight, and the content of the structural unit formed by butadiene is 70% by weight; the average molecular weight of the styrene-butadiene-styrene terpolymer is 110,000;

[0057] The compatibilizer is an aromatics extraction oil (commercially purchased from Jinan Oil Refinery) with an aromatics content of 92% by weight;

[0058] The ...

Embodiment 2

[0076] This example is used to illustrate the emulsified asphalt and its preparation method according to the present invention.

[0077] The composition formula (by weight) of emulsified asphalt:

[0078]

[0079]

[0080] Among them, the base asphalt is No. 70 road asphalt commercially purchased from Zhenhai Refining and Chemical Co., Ltd., with a penetration of 68.1;

[0081] The polymer modifier is a styrene-butadiene-styrene terpolymer commercially available from Yueyang Petrochemical under the brand name SBS791H, wherein the total amount of the styrene-butadiene-styrene terpolymer is Standard, the content of the structural unit formed by styrene is 30% by weight, the content of the structural unit formed by butadiene is 70% by weight; the average molecular weight of this styrene-butadiene-styrene terpolymer is 11 Ten thousand;

[0082] The compatibilizer is furfural extracted oil (commercially purchased from Jinan Oil Refinery) with an aromatics content of 92% by ...

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Abstract

The invention discloses emulsified asphalt and a preparation method thereof. Based on the total weight of the emulsified asphalt, the emulsified asphalt is prepared from the following components in percentage by weight: 60-70 percent of polymer modified asphalt, 1-4 percent of emulsifier, 0.1-0.5 percent of an anti-stripping agent and 28-38 percent of water; the emulsifier contains a first emulsifier and a second emulsifier; the first emulsifier is one or more of lignin amine, alkyl amide polyamine and polyethylene polyamine; the second emulsifier is one or more of alkylamine, alkyl propylene diamine and alkyl quaternary ammonium salt; and the weight ratio of the first emulsifier to the second emulsifier is 1-9:1. The emulsifier has a relatively strong bonding strength with aggregates, so that the service life of the mixture formed by the emulsified asphalt is prolonged, the demulsified curing speed of the mixture in a spreading and compacting process is increased, and the emulsified asphalt mixture has relatively high high-temperature performance and excellent water-resistant stability.

Description

technical field [0001] The invention relates to an emulsified asphalt and a preparation method thereof. Background technique [0002] With the development of the domestic economy, road construction is also growing rapidly and changing with each passing day. At present, the vast majority of road pavement is realized by hot-mix asphalt mixture. In order to better maintain the road surface operation status, ensure the service life and quality of the road surface, protect the environment, save resources, minimize funds and maximize benefits, preventive maintenance is the most important aspect of asphalt pavement maintenance. good means. [0003] A variety of maintenance technologies have been widely used, such as gravel sealing technology, slurry sealing layer, micro-surfacing technology and ultra-thin wear layer. However, these technologies still have some deficiencies: gravel seal, slurry seal, and micro-surfacing technologies are all cold-mix and cold-paving technologies, b...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L95/00C08L53/02C08J3/03
CPCC08J3/03C08J2395/00C08J2453/02C08K2201/014C08L95/00C08L2205/025C08L2205/03C08L2205/035C08L2205/08C08L53/02C08L91/00C08L97/005C08K5/3445C08K5/20C08K5/00C08K5/17C08K5/19
Inventor 张敬义韩青英黄婉利沈家永罗望群杨闯刘清华董德安所怡
Owner CHINA PETROLEUM & CHEM CORP
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