Composite modified asphalt mixture of rubber powder with high anti-rutting performance and preparation method thereof

A technology of composite modified asphalt and mixture, which is applied in the direction of climate sustainability, sustainable waste treatment, solid waste management, etc., can solve the problems that the road performance cannot be fully adapted, and achieve the purpose of highlighting the significance of social environmental protection and solving environmental pollution Effects of problems, large social benefits, and economic benefits

Active Publication Date: 2015-03-25
YANGZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

With the deepening of research, rubber asphalt mixture has been significantly improved compared with matrix asphalt mixture, but its road performance cannot fully meet the requirements of the current road environment, especially in the channelization of expressways and heavy-duty traffic conditions. need

Method used

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  • Composite modified asphalt mixture of rubber powder with high anti-rutting performance and preparation method thereof
  • Composite modified asphalt mixture of rubber powder with high anti-rutting performance and preparation method thereof
  • Composite modified asphalt mixture of rubber powder with high anti-rutting performance and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Example 1 is a dry molding preparation method. First, put 180g of rubber powder and 8.1g of Vita linking agent (TOR) into 1000g of Jinling 70# road petroleum asphalt at 120°C, and then stir at a high speed for 1 hour at 160-170°C. Then put it in a 170°C oven and swell for 1 hour to obtain TOR rubber asphalt; then put 6g of Lufu 8000 and 1335g of aggregate (wherein 1#:2#:3#:4#=42:30:0:17) in Stir in the mixing pot for 30s, add 93g of TOR rubber asphalt and stir for 90s, then add 165g of mineral powder and stir for 90s, then form the test piece and prepare the rubber powder composite modified asphalt mixture. The specific steps are:

[0030] 1) Heating road petroleum asphalt: heating and dehydrating the asphalt, the heating temperature is 120°C.

[0031] 2) The mass of rubber powder is 18% of the mass of asphalt, and TOR is 4.5% of the mass of rubber powder.

[0032] 3) Mix the rubber powder and TOR into the road petroleum asphalt at the same time, and carry out mechani...

Embodiment 2

[0037] Example 2 is the preparation method of wet molding. First put 50g of Lufu 8000 into 1000g of Jinling 70# road petroleum asphalt at 120°C, stir for 2 to 3 minutes, then add 180g of rubber powder and 8.1g of Vita linker (TOR) , stirred at 160-170°C for 1 hour at high speed, and then put it in a 160°C oven to swell for 1 hour to obtain rubber powder composite modified asphalt; 42:30:0:17) was mixed with 93g of rubber powder compound modified asphalt for 90s, then 165g of mineral powder was added and stirred for 90s, the test piece was formed, and the rubber powder compound modified asphalt mixture was prepared.

[0038] 1) Heating road petroleum asphalt: heating and dehydrating the asphalt, the heating temperature is 120°C.

[0039] 2) The quality of Lufu 8000 is 5% to 10% of the asphalt, the rubber powder is 18% of the asphalt, and TOR is 4.5% of the rubber powder.

[0040] 3) Mix Lufu 8000, rubber powder and TOR into the road petroleum asphalt at the same time, and carr...

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Abstract

The invention relates to a composite modified asphalt mixture of rubber powder with a high anti-rutting performance and a preparation method thereof. The mixture is mainly characterized in that in a dry process moulding preparation method, the mass ratio of tans-polyethylene rubber (TOR), rubber powder, asphalt, mineral aggregate to a complexing agent is (0.038-0.041): (0.841-0.919): (4.671-5.106): (93.337-94.052): (0.399-0.596); in a wet process moulding preparation method, the mass ratio of tans-polyethylene rubber (TOR), rubber powder, asphalt, mineral aggregate to a complexing agent is (0.016-0.035): (0.780-0.855): (4.335-4.918): (93.671-94.652): (0.217-0.492). According to the mixture provided by the invention, the anti-rutting performance of an asphalt rubber pavement is improved to a great extent, the dynamic stability is obviously increased compared with an SBS modified asphalt mixture, and the low temperature anti-cracking performance and the water stability are slightly improved. The composite modified asphalt mixture provided by the invention is simple in process, has huge social and economic benefits, and meets the characteristics of green ecology and sustainable development.

Description

technical field [0001] The invention relates to the technical field of road construction and maintenance, in particular to a rubber powder composite modified asphalt mixture with high anti-rutting performance and a preparation method thereof. Background technique [0002] Rutting refers to the irreversible permanent deformation of the road surface under the repeated action of driving load. Due to the current heavy-duty traffic and high temperature in summer, the shear capacity of asphalt pavement is insufficient, and rutting has become one of the main diseases on highways, urban road intersections and bus lanes. [0003] At present, there are mainly two treatment methods for ruts: the first method is simple treatment, which uses a slurry seal to treat ruts, but this treatment method has poor durability, short service life and after treatment. The road noise is large, which seriously affects driving comfort; the second method is to mill the entire lane where the ruts are gen...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B26/26C04B18/12
CPCY02W30/91
Inventor 肖鹏徐亚康爱红吴正光陆如洋
Owner YANGZHOU UNIV
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