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Modified asphalt viscosity decreasing agent

A technology of modified asphalt and viscosity reducer, which is applied in the direction of building components, building insulation materials, buildings, etc. It can solve the problems of reduced compaction time, damage to the mixture, and low flatness, so as to improve high temperature stability and reduce high temperature. Viscosity, formula simple and practical effect

Active Publication Date: 2010-07-21
重庆市智翔铺道技术工程有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Modified asphalt mixture has a strong seasonality in pavement construction, and its pavement quality has a great relationship with natural conditions such as climate, temperature, wind, and rain in the construction season, especially in the northern region where the temperature difference between day and night is large and the average temperature is low, so The temperature of the asphalt mixture drops rapidly and the viscosity drops sharply, which reduces the effective compaction time and leads to some difficult problems in the construction process, such as: low flatness and difficult to control, uneven density and inaccurate loose paving coefficient, Difficulty bonding upper and lower layers, segregation, etc.
At the same time, because the temperature of the modified asphalt mixture is too low, the mixture will be damaged during the rolling process.

Method used

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  • Modified asphalt viscosity decreasing agent

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Experimental program
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Effect test

Embodiment Construction

[0018] Below in conjunction with embodiment further illustrate the present invention.

[0019] Adopt the ratio of the following table to carry out the implementation of the viscosity reducer

[0020] components

Weight g

p-Hydroxyphenylglycine

5000

Sorbitan Tristearate

1000

Synthetic aliphatic hydrocarbons at 90-140°C

8000

castor oil

1000

[0021] Process: Dehydrate castor oil at 100-120°C, add p-hydroxyphenylglycine, sorbitan tristearate and synthetic aliphatic hydrocarbons at 90-140°C, and extrude in a screw extruder at a temperature of 80-100°C Blending, extrusion, granulation and cooling.

[0022] The effect of modified asphalt viscosity reducer on the performance of SBS modified asphalt is as follows:

[0023]

[0024] The effect of modified asphalt viscosity reducer on the performance of cast asphalt concrete GA10 is as follows:

[0025]

Pilot projects

Poured with 4% viscosity r...

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Abstract

The invention provides a modified asphalt viscosity decreasing agent which relates to a paving material for roads, bridges and tunnels. The viscosity decreasing agent is prepared from the following components in parts by weight: 4-20 parts of organic acid, 1-30 parts of surface active agent, 5-80 parts of synthesis paraffin, and 1-30 parts of compatilizer. After the viscosity decreasing agent is doped, the high-temperature viscosity of the modified asphalt is greatly decreased, while other various indexes are not changed. Simultaneously, compared with the common modified asphalt, after the viscosity decreasing agent is doped, the concrete stirring temperature, low-temperature property and fatigue property of the casting type asphalt are greatly improved. The invention is mainly used for road petroleum asphalt and SBS modified asphalt.

Description

technical field [0001] The invention relates to road, bridge and tunnel pavement materials, in particular to a modified asphalt viscosity reducer. technical background [0002] Modified asphalt has the advantages of improving the road performance of asphalt mixture (especially high temperature stability, low temperature flexibility and fatigue cracking), prolonging the service life of the road surface, etc. It has been widely used in pavement structures such as graded drainage asphalt wear course and orthogonal special-shaped steel bridge deck pavement. [0003] Modified asphalt mixture has a strong seasonality in pavement construction, and its pavement quality has a great relationship with natural conditions such as climate, temperature, wind, and rain in the construction season, especially in the northern region where the temperature difference between day and night is large and the average temperature is low, so The temperature of the asphalt mixture drops rapidly and th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L95/00C08K5/00C08K5/092C08K5/17C08K5/09C08K5/103C08K5/01C08K5/10C08K5/12
CPCC04B2111/0075C04B2103/44C04B40/0039
Inventor 盛兴跃郝增恒张华徐光红李媛媛王民
Owner 重庆市智翔铺道技术工程有限公司
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