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High-performance asphalt mixture and preparation method thereof

An asphalt mixture, high-performance technology, applied in the field of road engineering, can solve the problems of small low-temperature ductility, poor high-temperature aging resistance, etc., achieve strong low-temperature crack resistance, strong high-temperature resistance, and prolong service life

Inactive Publication Date: 2019-06-14
CHANGSHA UNIVERSITY OF SCIENCE AND TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] To sum up, the softening point of SBR modified asphalt is significantly improved compared with base asphalt, especially the low temperature ductility is greatly increased, but the high temperature aging resistance is poor
After adding BRA particles, the asphalt has strong high temperature aging resistance, but the low temperature ductility is small

Method used

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  • High-performance asphalt mixture and preparation method thereof
  • High-performance asphalt mixture and preparation method thereof
  • High-performance asphalt mixture and preparation method thereof

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Embodiment 1

[0046] The embodiment of the invention discloses a high-performance asphalt mixture, including: 70# matrix asphalt, BRA-SBR composite modified material and aggregate; 70# matrix asphalt and BRA-SBR composite modified material are mixed to form a BRA-SBR composite Modified asphalt, the ratio of the mass of BRA-SBR composite modified asphalt to the mass of aggregate is the asphalt ratio, and the asphalt ratio is 4.2% to 4.6%. Among them, the BRA-SBR composite modified material is composed of Buton rock asphalt (BRA) and styrene-butadiene latex (SBR).

[0047] The raw materials of high-performance asphalt mixture are proportioned in parts by mass as follows: 100 parts of 70# base asphalt, 10-30 parts of BRA, 3-9 parts of SBR, and 2457-3022 parts of aggregate.

[0048] A preparation method for high-performance asphalt mixture, comprising the steps of:

[0049] Step 1: Dry BRA, cut and dry SBR;

[0050] Step 2: Put 70# base asphalt in an oven, and heat it at 160°C to 170°C until ...

Embodiment 2

[0055] The embodiment of the invention discloses a high-performance asphalt mixture, including: 70# matrix asphalt, BRA-SBR composite modified material and aggregate; 70# matrix asphalt and BRA-SBR composite modified material are mixed to form a BRA-SBR composite Modified asphalt, the ratio of the mass of BRA-SBR composite modified asphalt to the mass of aggregate is the asphalt ratio, and the asphalt ratio is 4.2%. Among them, the BRA-SBR composite modified material is composed of Buton rock asphalt (BRA) and styrene-butadiene latex (SBR).

[0056] The raw materials of high-performance asphalt mixture are proportioned by mass as follows: 100 parts of 70# base asphalt, 10 parts of BRA, 3 parts of SBR, and 2690 parts of aggregate.

[0057] A preparation method for high-performance asphalt mixture, comprising the steps of:

[0058] Step 1: Dry BRA, cut and dry SBR;

[0059] Step 2: Put 70# base asphalt in an oven, and heat it at 160°C to 170°C until it is fully melted;

[006...

Embodiment 3

[0064] The embodiment of the invention discloses a high-performance asphalt mixture, including: 70# matrix asphalt, BRA-SBR composite modified material and aggregate; 70# matrix asphalt and BRA-SBR composite modified material are mixed to form a BRA-SBR composite Modified asphalt, the ratio of the mass of BRA-SBR composite modified asphalt to the mass of aggregate is the asphalt ratio, and the asphalt ratio is 4.4%. Among them, the BRA-SBR composite modified material is composed of Buton rock asphalt (BRA) and styrene-butadiene latex (SBR).

[0065] The raw materials of high-performance asphalt mixture are proportioned by mass as follows: 100 parts of 70# base asphalt, 20 parts of BRA, 5 parts of SBR, and 2841 parts of aggregate.

[0066] A preparation method for high-performance asphalt mixture, comprising the steps of:

[0067] Step 1: Dry BRA, cut and dry SBR;

[0068] Step 2: Put 70# base asphalt in an oven, and heat it at 160°C to 170°C until it is fully melted;

[006...

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Abstract

The invention discloses a high-performance asphalt mixture and a preparation method thereof. The high-performance asphalt mixture comprises BRA-SBR composite modified materials, the BRA-SBR compositemodified materials are formed by compounding BRA and SBR and are mixed with matrix asphalt and aggregate to obtain the high-performance asphalt mixture. The high-performance asphalt mixture has extremely high temperature resistance and extremely high low temperature crack resistance; and moreover, due to the combination of the BRA and the SBR, the rutting resistance of the high-performance asphaltmixture can be effectively improved, certain water stability is achieved, the durability of the high-performance asphalt mixture is improved, and the service life of the asphalt pavement is prolonged.

Description

technical field [0001] The invention relates to the technical field of road engineering, in particular to a high-performance asphalt mixture and a preparation method thereof. Background technique [0002] In recent years, my country's economy has developed rapidly, and the transportation industry has entered a period of rapid development. The construction of expressways in my country has developed from zero in the late 1980s to the present, and the mileage has surpassed that of the United States and jumped to the top of the world. In particular, asphalt pavement is widely used in road engineering. At present, about 90% of high-grade highways in China use asphalt pavement structure, and the proportion in developed countries such as Europe and the United States even reaches 95%. Asphalt pavement has many advantages, for example, it can be opened to traffic as soon as possible after the construction is completed, it can reduce the vibration and noise of vehicles during driving,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B26/26
CPCC04B26/26C04B2201/10C04B2201/20C04B24/2676C04B14/28
Inventor 吕松涛樊喜雁刘超超夏诚东张芳超杨毅
Owner CHANGSHA UNIVERSITY OF SCIENCE AND TECHNOLOGY