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An early-strength emulsion for cold regeneration of waste asphalt pavement, its preparation method and its application

A technology for waste asphalt and asphalt pavement, which is applied in solid waste management, sustainable waste treatment, building components, etc. It can solve the problem of low early strength of cold regeneration, achieve improved water damage resistance, excellent performance, and expand the scope of application Effect

Active Publication Date: 2017-10-27
JIANGSU SOBUTE NEW MATERIALS +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] In order to solve the technical problem of low early strength of asphalt pavement cold regeneration in the prior art, the present invention provides an early-strength emulsion for cold regeneration of waste asphalt pavement, its preparation method and its application. The early-strength cold regeneration of the present invention The use of emulsion can reduce the mixing water consumption in the cold recycled mixture, accelerate the hydration of the cement in the cold recycled mixture, thereby improving the early strength of the cold recycled mixture, shortening the curing time, and expanding the application range of the emulsified asphalt cold recycled mixture

Method used

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  • An early-strength emulsion for cold regeneration of waste asphalt pavement, its preparation method and its application
  • An early-strength emulsion for cold regeneration of waste asphalt pavement, its preparation method and its application
  • An early-strength emulsion for cold regeneration of waste asphalt pavement, its preparation method and its application

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Weigh 4.0 parts of emulsifier, add 0.15 parts of stabilizer, 0.1 parts of activator, and 0.2 parts of dispersant, then add water to 36 parts, add pH adjustment aids to pH = 2.0, and finally add water to 38 parts to obtain soap liquid. Weigh 62 parts of petroleum pitch.

[0038] Described asphalt is No. 70 road petroleum asphalt (Korean SK company), and described cold regeneration emulsifier is IndulinW-5 slow-cracking type emulsifier (U.S. Meadwestvaco company); Described stabilizer is calcium chloride; The activator is triethanolamine (Jiaxing Jinyan Chemical Co., Ltd.); the dispersant is PCA-I type superplasticizer (Jiangsu Subote New Material Co., Ltd.), and the pH adjustment assistant is hydrochloric acid .

[0039] The preparation method of above-mentioned early strength type cold regeneration emulsion is as follows:

[0040] Take the above 62 parts of petroleum asphalt and heat to 135°C, heat the above 38 parts of soap liquid to 55°C, transport the soap liquid m...

Embodiment 2

[0056] Weigh 2.5 parts of emulsifier, add 0.2 parts of stabilizer, 2 parts of activator, and 0.5 parts of dispersant, then add water to 36 parts, add pH adjustment aids to pH=2.5, and finally add water to 38 parts to obtain soap. Weigh 55 parts of petroleum pitch.

[0057] Described asphalt is No. 90 road petroleum asphalt (North Asphalt Co., Ltd., Panjin City, Liaoning), and described cold regeneration emulsifier is E4875 slow-cracking type emulsifier (Akzo Nobel Company); Described stabilizer is chlorinated Calcium; The activator is diethanolamine (Nanjing Gutian Chemical Co., Ltd.); The dispersant is PCA-100P powder polycarboxylate water reducer (Jiangsu Subote New Material Co., Ltd.); The pH The value adjustment aid is hydrochloric acid.

[0058] The preparation method of above-mentioned early strength type cold regeneration emulsion is as follows:

[0059] Take the above 55 parts of petroleum asphalt and heat to 135°C, heat the above 38 parts of soap liquid to 60°C, tra...

Embodiment 3

[0075] Weigh 4 parts of emulsifier, add 5 parts of modifier, 1 part of stabilizer, 0.3 part of activator, 0.3 part of dispersant, then add water to 35 parts, add pH adjustment assistant to pH = 2.2, and finally add water to 37 parts , to obtain soap solution. Weigh 63 parts of petroleum pitch.

[0076] Described asphalt is No. 70 road petroleum asphalts (Hubei Guochuang High-tech Materials Co., Ltd.), and described cold regeneration emulsifier is Slow-cracking emulsifier (Jiangsu Subote New Material Co., Ltd.); the modifier is Indulin1468 styrene-butadiene latex (Meadwestvaco, U.S.), and the stabilizer is calcium chloride; the activator is three Isopropanolamine (Taizhou Greenland Chemical Co., Ltd.); the dispersant is a calcium naphthalenesulfonate superplasticizer (Jiangsu Subote New Material Co., Ltd); the pH adjustment assistant is hydrochloric acid.

[0077] The preparation method of above-mentioned early strength type cold regeneration emulsion is as follows:

[0078...

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Abstract

The invention discloses an early-strength emulsion for the cold regeneration of a waste asphalt pavement and a preparation method and application thereof. The raw material component of the early-strength emulsion for the cold regeneration of the waste asphalt pavement is prepared from the following components in percentage by weight: 50%-65% of road petroleum asphalt, 1.0%-4.5% of an asphalt emulsifying agent, 0%-10% of a modifying agent, 0%-0.4% of an exciting agent, 0.01%-0.4% of a dispersing agent, 0.05%-2.0% of a stabilizer, 0%-0.5% of an auxiliary agent and the balance of water, wherein the auxiliary agent is used for regulating the pH value, and the modifying agent is cationic styrene-butadiene latex. The early-strength emulsion for the cold regeneration can be used for reducing the blended water usage amount of a cold regeneration mixture and accelerating the hydration of cement contained in the cold regeneration mixture, thereby enhancing the early strength of the cold regeneration mixture, shortening the curing time and enlarging the application range of the emulsified asphalt cold regeneration mixture.

Description

technical field [0001] The invention belongs to the field of road engineering materials, and in particular relates to an early-strength emulsion for cold regeneration of waste asphalt pavement, a preparation method and application thereof. Background technique [0002] The amount of waste asphalt mixture produced in my country every year is nearly 160 million tons. If such a large amount of waste asphalt mixture is not utilized, it will not only occupy a large amount of land, but also pollute the environment. Therefore, the scientific and efficient utilization of waste asphalt mixture is of great significance to promote resource recycling and environmental protection, and realize the sustainable development of asphalt pavement. [0003] The current regeneration of asphalt mixture is mainly divided into hot regeneration and cold regeneration. Although thermal regeneration has good road performance, it causes heavy environmental pollution and high energy consumption in high-t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L95/00C08L9/08C08J3/03C04B28/04C04B18/16
CPCY02W30/91
Inventor 洪锦祥林俊涛陈香魏唐中张苏龙张德育黄冲邓成
Owner JIANGSU SOBUTE NEW MATERIALS
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