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High-permeability emulsion for cold regeneration of waste and old asphalt mixture and preparation method thereof

A waste asphalt, high-permeability technology, applied in building insulation materials, building components, buildings, etc., can solve the problems of aging asphalt that cannot be recycled and the effect of aging asphalt is insufficient, so as to improve the weak area of ​​interface bonding and increase the strength and water damage resistance, performance-enhancing effects

Inactive Publication Date: 2015-03-04
JIANGSU SOBUTE NEW MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] The technical problem to be solved by the present invention is: during the current use of the emulsified asphalt cold recycled mixture, the effect of the aged asphalt in the cold recycled emulsion and the waste asphalt mixture is insufficient, causing the aged asphalt in the old asphalt pavement material to be unable to be recycled

Method used

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  • High-permeability emulsion for cold regeneration of waste and old asphalt mixture and preparation method thereof
  • High-permeability emulsion for cold regeneration of waste and old asphalt mixture and preparation method thereof
  • High-permeability emulsion for cold regeneration of waste and old asphalt mixture and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Weigh 2.5 parts of emulsifier, add 0.1 part of stabilizer, 1 part of diffusion penetrating agent, then add water to 36 parts, add pH adjustment agent to pH=2.5, and finally add water to 38 parts to obtain soap liquid. Weigh 62 parts of petroleum pitch.

[0036] Described asphalt is No. 70 road petroleum asphalts (Korean SK company), and described cold regeneration emulsifier is E4875 slow-cracking type emulsifier (Akzo Nobel Company); Described stabilizer is calcium chloride; Described The diffusion penetrating agent is a mixture of JFC, DP and fatty alcohol polyether amide; the pH adjustment assistant is hydrochloric acid.

[0037] The preparation method of the above-mentioned high-permeability cold recycled emulsified asphalt is as follows:

[0038] Take the above-mentioned 62 parts of petroleum asphalt and heat it to 140°C, heat the above-mentioned 38 parts of soap liquid to 60°C, transport the soap liquid mixture into the colloid mill for circulation, then input th...

Embodiment 2

[0053] Weigh 3.5 parts of emulsifier, add 0.15 parts of stabilizer, diffuse 2 parts of penetrant, then add water to 36 parts, add pH adjustment assistant to pH=2.5, and finally add water to 38 parts to obtain soap. Weigh 62 parts of petroleum pitch.

[0054] Described asphalt is No. 90 road petroleum asphalt (Northern Asphalt Co., Ltd., Panjin City, Liaoning), and described cold regeneration emulsifier is Indulin W-5 slow-cracking type emulsifier (Meadwestvaco company of the United States); Described stabilizer is sodium chloride; the diffusion penetrating agent is a composition of DAL, DBSA and methyl ethyl ketone; the pH adjustment assistant is hydrochloric acid.

[0055] The preparation method of the above-mentioned high-permeability cold recycled emulsified asphalt is as follows:

[0056] Take the above-mentioned 62 parts of petroleum asphalt and heat it to 130°C, heat the above-mentioned 38 parts of soap liquid to 55°C, transport the soap liquid mixture into the colloid ...

Embodiment 3

[0072] Weigh 4 parts of emulsifier, add 5 parts of modifier, 0.1 part of stabilizer, 3 parts of diffusion penetrating agent, then add water to 35 parts, add pH adjustment agent to pH = 2.2, and finally add water to 37 parts to obtain soap . Weigh 63 parts of petroleum pitch.

[0073] 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.); described modifying agent is Indulin1468 styrene-butadiene latex (U.S. Meadwestvaco), and described stabilizer is calcium chloride; described diffusion penetrating agent is JFC -E, the composition of DAL and DBSA; Described pH adjusting assistant is sulfuric acid.

[0074] The preparation method of the above-mentioned high-permeability cold recycled emulsified asphalt is as follows:

[0075] Take the above 63 parts of petroleum asphalt and heat to 145°C, heat the above 37 parts of soa...

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Abstract

The invention relates to a high-permeability emulsion for cold regeneration of a waste and old asphalt mixture and a preparation method thereof. the emulsion is prepared from the following compositions by mass: 50%-65% of road petroleum asphalt, 1.0%-4.5% of an asphalt emulsifier, 0%-10% of a modifier, 0.1%-4.0% of a penetrating agent, 0.05%-2.0% of a stabilizing agent, 0-0.5% of an auxiliary agent adjusting pH, and the balance water. The preparation method comprises: together dissolving the emulsifier, the modifier, the dispersing penetrating agent, the stabilizing agent and the auxiliary agent adjusting the pH value in water, so as to prepare a soap solution, heating to 40-70 DEG C, adjusting pH to be 1.5-3.0, heating the road petroleum asphalt to 120 DEG C-150 DEG C, and performing emulsification on the soap solution and the asphalt, so as to obtain the high-permeability emulsion for cold regeneration of the waste and old asphalt mixture. After being blended with the waste and old asphalt mixed material, the high-permeability emulsion for cold regeneration of the waste and old asphalt mixture is capable of penetrating and activating aged asphalt in the waste and old asphalt mixed material, thereby improving the effective asphalt content in the cold regeneration mixed material, and further improving the water-damage resistance, endurability and other pavement performances of the cold regeneration mixed material and realizing efficient cold regeneration of the waste and old asphalt mixed material.

Description

technical field [0001] The invention belongs to the field of road engineering materials, and in particular relates to an emulsion for cold regeneration of waste asphalt mixture and a preparation method thereof. Background technique [0002] The "Twelfth Five-Year Plan" of transportation clearly pointed out that road maintenance should be strengthened to ensure that no less than 17% of expressways and national and provincial roads in the country implement major and medium repair projects every year. Based on this calculation, the amount of waste asphalt mixture produced in my country every year will exceed 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. [0003] In addition, in the face of high international oil prices, my country's asphalt pavement maintenance and construction costs have surged, and resource and environmental problems have become increasingly...

Claims

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Application Information

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IPC IPC(8): C08L95/00C08L9/08C08J3/03
Inventor 洪锦祥林俊涛刘加平陈香黄冲耿磊张苏龙
Owner JIANGSU SOBUTE NEW MATERIALS
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