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Production processes of rock asphalt modified asphalt and mixture

A technology of modified asphalt and production process, which is used in building thermal insulation materials, building components, buildings, etc., can solve the problem that the dynamic stability of asphalt mixture is not very high, the high temperature rutting resistance of rock asphalt is not significant, and the processing technology of modified asphalt is not enough. Insufficient maturity and other problems to achieve the effect of improving water damage resistance, simple and easy processing, and reducing temperature sensitivity

Inactive Publication Date: 2012-04-18
JIANGYIN TAIFU ASPHALTUM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] Although rock asphalt has the above good properties, it still has certain defects and deficiencies when applied to road surfaces:
[0009] 1. Rock asphalt is lumpy or powdery, and the shape is irregular. If it is added directly, it is inconvenient to measure and mix, and it is not suitable to mix evenly;
[0010] 2. The improvement of high temperature rutting resistance of rock asphalt is not significant enough. It is shown that the softening point of modified asphalt is not too high (10wt% rock asphalt modified softening point is less than 60 ℃), and the dynamic stability of modified asphalt mixture not very high
[0011] 3. In the existing technology, the modified asphalt processing technology of rock asphalt is not mature enough, and at the same time, the on-site construction technology of using rock asphalt modified asphalt to mix the mixture needs further improvement

Method used

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  • Production processes of rock asphalt modified asphalt and mixture
  • Production processes of rock asphalt modified asphalt and mixture
  • Production processes of rock asphalt modified asphalt and mixture

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] The technical solution of the present invention is a production process of rock bitumen modified asphalt, and the process includes the following processing steps:

[0035] Step 1: Put the base asphalt into an asphalt tank with a stirring device and heat it to 160°C, and turn on the stirring device;

[0036] The second step: on the basis of the first step, slowly and uniformly add part of rock asphalt and stabilizer, stir while adding, wait until the temperature is heated to 175 ° C, and stir at this temperature for 30 minutes;

[0037] The third step: on the basis of the second step, add the remaining asphalt and continue stirring for 1.5 hours to completely dissolve the asphalt particles, and the part of rock asphalt is 1 / 2 of the total amount of rock asphalt added;

[0038] The fourth step: on the basis of the third step, move the prepared rock asphalt modified asphalt into the finished product storage tank, and stir properly during the storage process.

[0039]Where...

Embodiment 2

[0051] On the basis of Example 1, preferred embodiment of the present invention also has, in the production technique of rock bitumen modified bitumen:

[0052] Step 1: Put the base asphalt into an asphalt tank with a stirring device and heat it to 155°C, and turn on the stirring device;

[0053] The second step: on the basis of the first step, slowly and uniformly add part of rock asphalt and stabilizer, stir while adding, wait until the temperature is heated to 170 ° C, and stir at this temperature for 40 minutes;

[0054] The third step: on the basis of the second step, add the remaining asphalt and continue stirring for 1 hour to completely dissolve the asphalt particles, and the part of rock asphalt is 1 / 3 of the total amount of rock asphalt added;

[0055] The fourth step: on the basis of the third step, move the prepared rock asphalt modified asphalt into the finished product storage tank, and stir properly during the storage process.

[0056] Wherein, the base asphalt...

Embodiment 3

[0067] On the basis of Example 1, preferred embodiment of the present invention also has, in the production technique of rock bitumen modified bitumen:

[0068] Step 1: Put the base asphalt into an asphalt tank with a stirring device and heat it to 165°C, and turn on the stirring device;

[0069] The second step: on the basis of the first step, slowly and uniformly add part of rock asphalt and stabilizer, stir while adding, wait until the temperature is heated to 180 ° C, and stir at this temperature for 20 minutes;

[0070] The third step: on the basis of the second step, add the remaining asphalt and continue stirring for 1.2 hours, so that the asphalt particles are completely dissolved, and the part of rock asphalt is 1 / 2 of the total amount of rock asphalt added;

[0071] The fourth step: on the basis of the third step, move the prepared rock asphalt modified asphalt into the finished product storage tank, and stir properly during the storage process.

[0072] Wherein, th...

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Abstract

The invention discloses a production process of rock asphalt modified asphalt and a production process of a rock asphalt modified asphalt mixture. The production process of rock asphalt modified asphalt comprises the following process steps of: placing matrix asphalt in an asphalt tank with a stirring device to heat to about 160 DEG C, and starting the stirring device; then slowly adding a part of rock asphalt and a stabilizer under stirring, heating to about 175 DEG C, and stirring for 30 minutes at the temperature; adding the rest asphalt to continuously stir for 1-1.5 hours to ensure that asphalt particles are dissolved completely; and moving the prepared rock asphalt modified asphalt in a finished product storage tank, and properly stirring in the storage process. When in use, mineral aggregate is heated and controlled to about 185 DEG C; the rock asphalt modified asphalt is added in the mineral aggregate to stir, and the temperature is controlled to about 175 DEG C to obtain the mixture; and the mixture is discharged when the temperature is reduced to 170 DEG C. By adopting the process to prepare the rock asphalt modified asphalt, the operations are simple and rock asphalt can be distributed in the matrix asphalt evenly.

Description

technical field [0001] The invention relates to a production process of Li Qing, in particular to a production process of rock asphalt modified asphalt and a production process of mixing rock asphalt modified asphalt into a mixture. Background technique [0002] Rock asphalt is a bituminous substance produced by petroleum in mountains and rock fissures after hundreds of millions of years of deposition and changes, under the combined effects of heat, pressure, oxidation, coal contact, and bacteria. The physical properties of rock asphalt are close to "coal". The main components of natural rock asphalt are mostly asphaltene, colloid or mineral asphalt matrix. [0003] Rock asphalt is a kind of natural asphalt. Because rock asphalt coexists with the natural environment all the year round, its properties are particularly stable, and it usually has very good road performance. Rock asphalt is not used directly as asphalt, but as an improvement of artificially refined asphalt. A ...

Claims

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Application Information

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IPC IPC(8): C08L95/00C08L71/00C08L23/08C08K13/02C08K3/06C08K3/22C04B26/26
Inventor 夏咸明
Owner JIANGYIN TAIFU ASPHALTUM
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