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Modified asphalt and preparation method thereof

A modified asphalt and thermoplastic technology, applied in building components, building insulation materials, buildings, etc., can solve the problems of road performance not meeting high road requirements, complex production process, huge energy waste, etc., to reduce traffic accidents , Excellent road performance and excellent adhesion performance

Active Publication Date: 2014-09-03
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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  • Modified asphalt and preparation method thereof
  • Modified asphalt and preparation method thereof

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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 obtains, make some Marshall test blocks according to " highway engineering asphalt and bituminous mixture test regulation ", experimental method is according to T0702-2011 middle asphalt 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 is placed in the mold stably for 24 hours, the standard Marshall test piece is obtained. Continuously observe and monitor the color change, and put them into -18℃ low temperature, normal temperature, and 120℃ 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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PUM

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Abstract

The invention discloses modified asphalt. The modified asphalt is characterized in that the modified asphalt is prepared by using petroleum resin, rubber operating oil, naphthenic oil, thermoplastic styrene-butadiene rubber (SBS) and polypropylene wax as raw materials, the modified asphalt comprises the following raw materials in parts by weight: 40-50 parts of petroleum resin, 10-15 parts of rubber operating oil, 10-15 parts of naphthenic oil, 12-15 parts of SBS and 0.01-0.03 part of polypropylene wax. The modified asphalt disclosed by the invention has excellent performances, can be used as heavy-duty traffic asphalt, is light yellow, has relatively good coloring property and excellent adhesive property to a coloring agent, can be manufactured into colored asphalt to beautify the environment, has strong color contrasts, and can be used for dividing different lane uses and reducing the traffic accidents. In addition, compared with conventional black asphalt which can cause pollution because of volatilization of a large amount of light-weight components, the modified asphalt disclosed by the invention is stable in performance, less in volatile component, safe and environmental 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 Applications(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