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Preparation method of stable rubber modified asphalt

A rubber modification and stabilization technology, which is applied in building components, building insulation materials, construction, etc., can solve the problems of unsuitability for large-scale application, segregation of modified asphalt, poor stability, etc., to achieve large-scale application and stable product performance , the effect of improving stability

Inactive Publication Date: 2014-08-13
福建省燕宁顺通科技发展有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the modified asphalt produced by traditional methods generally has the problem of poor stability, resulting in obvious segregation of modified asphalt, which cannot be stored for a long time in a factory, and is not suitable for large-scale application

Method used

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  • Preparation method of stable rubber modified asphalt
  • Preparation method of stable rubber modified asphalt
  • Preparation method of stable rubber modified asphalt

Examples

Experimental program
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preparation example Construction

[0025] The preparation method of stable type rubber modified asphalt of the present invention comprises the following steps:

[0026] 1) Select No. 70 road petroleum asphalt as the base asphalt, put the base asphalt in a mixer, and heat it to 170-180°C;

[0027] 2) Add SBS, rubber powder and compatibilizer to the above base asphalt, start the mixer to start stirring, and slowly adjust the speed to 2500-3000r / min during the stirring process, the whole stirring process is 45-55min; the speed is 2500- The stirring time of 3000r / min is 15-25min, the temperature is controlled at 180-190°C, the specification of the rubber powder is 30 mesh or 40 mesh, and the compatibilizer is rubber oil;

[0028] 3) Add a stabilizer to the mixture after the above stirring is completed, place it in a high-speed shearing machine, immerse the rotor of the shearing machine in the mixture to preheat for 1 to 2 minutes, and then turn on the shearing machine. During the shearing process, slow Slowly adju...

Embodiment 1

[0039] The following components were weighed by mass: 1 part of SBS, 16 parts of rubber powder (30 mesh), 0.1 part of rubber oil, 0.25 part of sulfur, and 82.65 parts of No. 70 road petroleum asphalt.

[0040] 1) Select No. 70 road petroleum asphalt as the base asphalt, put the base asphalt in a mixer, and heat it to 170°C;

[0041] 2) Add SBS, rubber powder and rubber oil to the above-mentioned matrix asphalt, start the mixer to start stirring, slowly adjust the speed to 3000r / min during the stirring process, and the whole stirring process is 45min; the stirring time when the speed is 3000r / min is 20min, the temperature is controlled at 180°C;

[0042] 3) Add sulfur to the mixture after the above stirring is completed, place it in a high-speed shearing machine, immerse the rotor of the shearing machine in the mixture to preheat for 1 to 2 minutes, then turn on the shearing machine, and slowly Adjust the rotation speed to 2500r / min, and the whole shearing process takes 15-18 ...

Embodiment 2

[0046] The following components were weighed by mass: 1.5 parts of SBS, 15 parts of rubber powder (40 mesh), 0.2 parts of rubber oil, 0.15 parts of sulfur, and 83.15 parts of No. 70 road petroleum asphalt.

[0047] 1) Select No. 70 road petroleum asphalt as the base asphalt, put the base asphalt in a mixer, and heat it to 180°C;

[0048] 2) Add SBS, rubber powder and rubber oil to the above-mentioned matrix asphalt, start the mixer to start stirring, slowly adjust the speed to 2500r / min during the stirring process, and the whole stirring process is 55min; the stirring time for the speed of 2500r / min is 25min, the temperature is controlled at 190°C;

[0049] 3) Add sulfur to the mixture after the above stirring is completed, place it in a high-speed shearing machine, immerse the rotor of the shearing machine in the mixture to preheat for 1 to 2 minutes, then turn on the shearing machine, and slowly Adjust the rotation speed to 3000r / min, and the whole shearing process takes 15...

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Abstract

The invention discloses a preparation method of stable rubber modified asphalt and belongs to the technical field of modified asphalt. The preparation method comprises the following steps: adding SBS (Styrene Butadiene Styrene), rubber powder and a compatilizer into heated matrix asphalt, stirring, subsequently adding a stabilizer, shearing, and putting a sheared product into an oven for swelling, thereby obtaining the stable rubber modified asphalt. By adopting the preparation method of the stable rubber modified asphalt provided by the invention, the mixing amount of SBS is reduced, so that the cost of the modified asphalt is greatly lowered, the preparation process is simple and practicable, a prepared product is stable in property, can be stored for a long time in factories, and is applicable to large-scale application.

Description

technical field [0001] The invention relates to the technical field of modified asphalt, in particular to a preparation method of stable rubber modified asphalt. Background technique [0002] At present, the actual quality of my country's highways has problems that cannot be ignored. As far as asphalt pavement is concerned, roads generally have problems of poor durability, short service life and early damage. Typical damages such as subsidence, cracks, ruts, looseness, and potholes on asphalt pavement can be seen everywhere on urban roads, which seriously affects The use performance of the road is deteriorated, causing great economic waste and potential safety hazards. The reasons for these pavement damages, in addition to factors such as design, construction, maintenance, etc., are also important reasons for the performance of materials, especially asphalt materials. [0003] Modified asphalt refers to the asphalt mixture made by adding modifiers to asphalt, or taking mea...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L95/00C08L21/00C08L53/02C08K3/06
Inventor 高翔
Owner 福建省燕宁顺通科技发展有限责任公司
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