High-dense emulsified asphalt and preparation method thereof

A technology of emulsified asphalt and asphalt, which is applied to building components, building insulation materials, buildings, etc., can solve the problems of diluting with water, increasing production costs, and inability to use, so as to shorten the preparation time, simplify the production process, and reduce production costs. Effect

Inactive Publication Date: 2008-03-12
徐培华
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The main disadvantage of this method is to increase the concentration of emulsified asphalt by mixing cationic surfactants and nonionic surfactants, adding stabilizers, additives and other chemical materials
For the emulsified asphalt production system, the addition of admixtures makes the production process more complicated and the production cost increases
In addition, in the emulsified asphalt produced, the weight concentration of asphalt is 76.0% to 90.0%. The content of asphalt is very high. If the concentration of emulsified asphalt is too high, the emulsified asphalt will harden and be diluted with water. It is generally used in fuel oil and cannot be used on roads. Use in construction, maintenance and repair

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Taking the production of high-concentration emulsified asphalt product 100kg of the present invention as an example, the raw materials used and the proportioning thereof are:

[0031] Bitumen 72kg

[0032] JY-R2S type split cationic asphalt emulsifier 2.2kg

[0033] Water 25.8kg.

[0034] The above pitch has a penetration of 101 at 25°C, measured in 0.1 mm.

[0035] Its preparation method is as follows:

[0036] Heat the asphalt to 120°C, add the JY-R2S type medium cracked cationic asphalt emulsifier into 65°C water and stir to dissolve into an emulsifier aqueous solution, add the emulsifier aqueous solution to the colloid mill, and then add the total amount of asphalt at a temperature of 120°C 80% is added to the colloid mill, emulsified for 1-2 minutes to make an emulsion, the emulsion and the remaining asphalt are added to a high-speed shearing machine, and sheared for 2-3 minutes to prepare high-concentration emulsified asphalt.

Embodiment 2

[0038] Taking the production of high-concentration emulsified asphalt product 100kg of the present invention as an example, the raw materials used and the proportioning thereof are:

[0039] Asphalt 63.0kg

[0040] JY-R2S type split cationic asphalt emulsifier 1.0kg

[0041] 36kg of water.

[0042] The penetration of pitch is the same as in Example 1.

[0043] Its preparation method is as follows:

[0044] Heat the asphalt to 110°C, add JY-R2S type medium cracked cationic asphalt emulsifier into 70°C water and stir to dissolve into an emulsifier aqueous solution, add the emulsifier aqueous solution to the colloid mill, and then add 85% of the total amount of asphalt at a temperature of 110°C % into the colloid mill, emulsified for 1 to 2 minutes to make an emulsion, and the emulsion and the remaining asphalt were added to a high-speed shearing machine, and sheared for 2 to 3 minutes to prepare high-concentration emulsified asphalt.

Embodiment 3

[0046]Taking the production of high-concentration emulsified asphalt product 100kg of the present invention as an example, the raw materials used and the proportioning thereof are:

[0047] Asphalt 80.0kg

[0048] JY-R2S type split cationic asphalt emulsifier 3.0kg

[0049] Water 17.0kg.

[0050] The penetration of pitch is the same as in Example 1.

[0051] Its preparation method is as follows:

[0052] Heat the asphalt to 130°C, add the JY-R2S type medium cracked cationic asphalt emulsifier into 60°C water and stir to dissolve into an emulsifier aqueous solution, add the emulsifier aqueous solution to the colloid mill, and then add the total amount of asphalt at a temperature of 130°C Add 75% to the colloid mill, emulsify for 1-2 minutes to make an emulsion, add the emulsion and the remaining asphalt to a high-speed shearing machine, and shear for 2-3 minutes to prepare high-concentration emulsified asphalt.

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Abstract

An emulsified asphalt of high concentration is provided, which is an emulsified asphalt in concentration by weight 63-80% and comprising 63.0%-80.0% asphalt, 1.0-3.0% emulsifier and some water in proper proportion. The preparing method is: heating the asphalt to 110-130 DEG C, adding the emulsifier into water of 60-70 DEG C, mixing and melting into an emulsifier water solution, adding the emulsifier water solution into a gel mill, adding 75-85% of the total asphalt into the gel mill, emulsifying about 1-2 minutes to produce emulsion, adding the emulsion and the rest asphalt into a hi-speed shearing machine, and shearing 2-3 minutes to produce the emulsified asphalt of high concentration. The tests on the emulsified asphalt of high concentration and the diluted emulsified asphalt according to the Experimental Rules for Asphalt and Asphalt Mixture of Road Engineering issued by the Ministry of Transportation prove that all the indicators meet the Implementation Manual for the Technical Specifications for Asphalt Pavement Construction of Roads issued by the Ministry of Transportation. The invention can be spread and used in the building of asphalt road and maintenance of asphalt pavement.

Description

technical field [0001] The invention belongs to the technical field of asphalt pavement materials, and in particular relates to high-concentration emulsified asphalt and a preparation method thereof. technical background [0002] Emulsified asphalt has the advantages of convenient use, no need for heating, and is not affected by seasons, wet stones and climate temperature. It has become the main material in road construction, maintenance and repair. With people's understanding and research on emulsified asphalt, the amount of emulsified asphalt used in road construction and maintenance has increased rapidly, the scope of application has continued to expand, and the level of application has also been greatly improved. The application of emulsified asphalt in road construction mainly includes: sticky layer, permeable layer, sealing layer and bridge deck waterproofing; the application in maintenance and repair of road surface includes: fog sealing layer, slurry sealing layer, m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L95/00C08J3/03
Inventor 徐培华
Owner 徐培华
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