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A kind of modified asphalt and its preparation method

A modified asphalt and thermoplastic technology, which is applied in building components, building insulation materials, buildings, etc., can solve the problems that the road performance cannot meet the higher road use requirements, the price remains high, and the production process is complicated, so as to reduce traffic. Accidents, less volatile matter, excellent road performance

Active Publication Date: 2016-09-14
重庆市智翔铺道技术工程有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are two methods for changing the color of asphalt: one is to use an appropriate solvent to remove the black asphaltene in petroleum asphalt, leaving other components with lighter colors; the colored asphalt produced in this way is customarily called decolorized asphalt , although the light-colored asphalt with adjustable color has been obtained, the production process is extremely complicated and the energy waste is huge, so the cost is also very high, which eventually leads to high prices and no market
The second is to use modern petrochemical products to prepare light-colored cementing materials, but its road performance cannot meet higher road requirements

Method used

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  • A kind of modified asphalt and its preparation method
  • A kind of modified asphalt and its preparation method

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] A modified bitumen is prepared by the following method:

[0022] A. Material preparation

[0023] Coumarone resin and carbon five resin with a mass ratio of 3:2: 46 parts; rubber process oil: 14 parts; naphthenic oil: 10 parts; SBS: 14 parts; polypropylene wax: 0.02 parts.

[0024] B. Production steps

[0025] Add the above-mentioned amount of petroleum resin, rubber process oil, and naphthenic oil into an oil bath device kept at 155°C to 160°C, with stirring, until the petroleum resin melts, then add the above-mentioned SBS and polypropylene wax gradually. Continue to stir for 18min to 22min, while keeping the temperature of the oil bath at 155°C to 160°C.

[0026] After the material is fused evenly, it enters the shearing device, the shearing rate is controlled at 5500r / min-6000r / min, and the shearing time is 24min-27min. After shearing, the modified bitumen of the present invention is obtained.

[0027] The road performance indicators of the modified asphalt prep...

Embodiment 2--5

[0032] Carry out by following processing parameter, other are all identical with embodiment 1. The prepared modified asphalt has a penetration (25°C, 100g, 5s) (0.1mm) of 54.1-54.5, a ductility (5cm / min, 5°C) of 24.03-24.20, and a softening point (ring and ball method) of 65-68. , Flash point (COC) is 227-232, viscosity (135°C) is 1.624-1.634.

[0033]

[0034]

Embodiment 6

[0036] With the modified bitumen that embodiment 1~5 makes, make some Marshall test blocks according to " highway engineering asphalt and bituminous mixture test regulation ", experimental method is according to T0702-2011 middle bituminous mixture test piece preparation method (compaction method ), the Marshall sample block is made according to the standard sample in the regulations, the red coloring agent is added to the sample, and the height of the standard sample is 63.5mm±1.3mm. After the prepared sample was placed in the mold stably for 24 hours, the standard Marshall test piece was obtained. Continuously observe, monitor the color change, and put it into -18°C low temperature, normal temperature, and 120°C high temperature environment for 24 hours to observe the color change. Under low temperature and normal temperature, the color is stable and bright, and it becomes lighter in high temperature environment. After research, it is found , the phenomenon of lightening of ...

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Abstract

A modified asphalt, characterized in that: it is made from petroleum resin, rubber operating oil, naphthenic oil, thermoplastic styrene-butadiene rubber (SBS) and polypropylene wax; the petroleum resin accounts for 40-50 parts, and the rubber Process oil accounts for 10-15 parts, naphthenic oil accounts for 10-15 parts, SBS accounts for 12-15 parts, and polypropylene wax accounts for 0.01-0.03 parts, all in parts by weight. The modified asphalt of the present invention has excellent pavement performance and can be used as heavy-duty traffic asphalt; at the same time, the modified asphalt is light yellow, has good colorability, and has excellent adhesion to colorants, and can be made into colored asphalt to beautify the environment, with strong Color contrast, divide different lane uses, reduce traffic accidents. In addition, traditional black asphalt will cause pollution due to a large amount of volatilization of light components, while the modified asphalt material of the present invention has stable performance, less volatile matter, and is safe, green and environmentally friendly.

Description

technical field [0001] The invention relates to a traffic asphalt, in particular to a light-color modified asphalt. Background technique [0002] Asphalt is one of the earliest engineering materials used by humans and is still widely used today. However, the traditional matrix asphalt is black. Therefore, for a long time, there are only two types of pavement: gray cement concrete pavement and black asphalt concrete pavement. With the development of society, the pavement form of a single color can no longer meet people's requirements for the division of road functions and appreciation. Changing the road color has become the focus of the road industry. There are two methods for changing the color of asphalt: one is to use an appropriate solvent to remove the black asphaltene in petroleum asphalt, leaving other components with lighter colors; the colored asphalt produced in this way is customarily called decolorized asphalt , although the light-colored asphalt with adjustabl...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L95/00C08L45/02C08L57/02C08L53/02C08L23/12C08K5/01
Inventor 伍朝晖徐建晖陈诚代剑锋
Owner 重庆市智翔铺道技术工程有限公司
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