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Preparation method of asphalt mixture of modified asphalt applying rock asphalt

A modified asphalt, asphalt modified technology, applied in building insulation materials, building components, buildings, etc., to achieve the effect of excellent oil resistance, simple addition process, and excellent anti-stripping performance

Active Publication Date: 2011-08-31
国润通工程集团有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although TLA lake asphalt modified asphalt has excellent performance, its production process is complex and requires special processing equipment for modification processing, which is suitable for large-scale applications and is not conducive to the application of small-scale pavement construction
At the same time, about 5% of ore powder will be precipitated during the modified production of asphalt in TLA Lake, resulting in waste of materials

Method used

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  • Preparation method of asphalt mixture of modified asphalt applying rock asphalt
  • Preparation method of asphalt mixture of modified asphalt applying rock asphalt
  • Preparation method of asphalt mixture of modified asphalt applying rock asphalt

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] 2. The weight of rock asphalt is 17% of the weight of matrix asphalt, and rock asphalt is added to the graded crushed stone.

[0026] 3. In the mixing bin of the mixing station, dry mix the above-mentioned mixture of graded gravel and rock asphalt at 190°C for 10 seconds, so that rock asphalt melts and adheres tightly to the surface of the graded gravel.

[0027] 4. After the rock asphalt and the mixture are mixed evenly, add the base asphalt and mix evenly. After mixing, add stone powder and continue mixing for 5 seconds. The mixing temperature is 170°C. After mixing, rock asphalt and matrix asphalt are uniformly mixed to form a finished product. The mixture at this time is rock asphalt modified asphalt mixture, which is directly used for paving roads.

[0028] Example 2: The selection and mixing ratio of graded crushed stone and base asphalt can be selected according to the needs of the paved road.

[0029] 1. Put the graded gravel into the mixing station for heating...

Embodiment 2

[0030] 2. The weight of rock asphalt is 40% of the weight of matrix asphalt, and rock asphalt is added to the graded crushed stone.

[0031] 3. In the mixing bin of the mixing station, dry mix the mixture of the graded gravel and rock asphalt at 200°C for 5 seconds, so that the rock asphalt melts and adheres tightly to the surface of the graded gravel.

[0032] 4. After the rock asphalt and the mixture are mixed evenly, add the base asphalt and mix evenly. After mixing, add stone powder and continue mixing for 10 seconds. The mixing temperature is 170°C. After mixing, rock asphalt and matrix asphalt are uniformly mixed to form a finished product. The mixture at this time is rock asphalt modified asphalt mixture, which is directly used for paving roads.

[0033] Example 3: The selection and mixing ratio of graded crushed stone and base asphalt can be selected according to the needs of the paved road.

[0034] 1. Put the graded gravel into the mixing station for heating, and th...

Embodiment 3

[0035] 2. The weight of rock asphalt is 30% of the weight of matrix asphalt, and rock asphalt is added to the graded crushed stone.

[0036] 3. In the mixing bin of the mixing station, dry mix the above-mentioned mixture of graded gravel and rock asphalt at 195°C for 20 seconds, so that rock asphalt melts and adheres tightly to the surface of the graded gravel.

[0037] 4. After the rock asphalt and the mixture are mixed evenly, add the base asphalt and mix evenly. After mixing, add stone powder and continue mixing for 5 seconds. The mixing temperature is 170°C. After mixing, rock asphalt and matrix asphalt are uniformly mixed to form a finished product. The mixture at this time is rock asphalt modified asphalt mixture, which is directly used for paving roads.

[0038] Embodiment 4: The selection and mixing ratio of graded crushed stone and base asphalt can be selected according to the needs of the paved road.

[0039] 1. Put the graded gravel into the mixing station for heat...

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Abstract

The invention discloses modified asphalt applying rock asphalt, asphalt mixture and a preparation method thereof. The modified asphalt is prepared according to the method that the rock asphalt is mixed in basic asphalt and the weight of the rock asphalt is 1 percent to 40 percent of the weight of the basic asphalt. The method is as follows: the dried rock asphalt and the basic asphalt are mixed and the mixture is the modified asphalt evenly mixed with graded broken stone and stone powder; the method comprises the following steps of: the graded broken stone is heated to be 190 DEG C to 200 DEGC; the rock asphalt is added into the graded broken stone and stirring for 5s to 20s at a temperature of 150 DEG C to 190 DEG C; and the basic asphalt is stirred into the mixture, and evenly stirred at a temperature of 150 DE G C to 190 DEG C; and finally the stone powder is added into the mixture and the obtained mixture is stirred for 5 to 10s at the temperature of 150 DEG C to 190 DEG C, the rock asphalt can be mixed with the basic asphalt evenly under the effect of stirring and mutual shearing of the graded broken stone and then the finished product can be obtained. The modified asphalt can improve high temperature performance, temperature sensibility, durability and water stability, strengthens the flood damage resistance and has the characteristic of good environmental protection.

Description

technical field [0001] The invention relates to a modified asphalt, a mixture and a production method thereof, in particular to a modified asphalt using rock asphalt, an asphalt mixture and a production method thereof Background technique [0002] With the large-scale development of highway construction, the demand for modified asphalt for laying roads is increasing, and the modification technology of modified asphalt has been greatly developed. Asphalt mixture using modified asphalt can improve the mechanical properties, high temperature stability and low temperature cracking resistance of pavement asphalt mixture. At present, SBS modified asphalt and TLA lake asphalt modified asphalt are the most widely used on roads. [0003] SBS modified asphalt is a modified asphalt formed by blending SBS rubber modifier and base asphalt in a certain proportion. It has excellent high temperature resistance but poor anti-aging performance. The working environment of the road surface c...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L95/00C08J3/20C04B26/26
Inventor 谢亚辉
Owner 国润通工程集团有限公司
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