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An asphalt stabilizer, a preparing method thereof and emulsified asphalt

A technology of stabilizer and asphalt, which is applied in the field of road asphalt, can solve the problems that cannot meet the stability requirements of asphalt materials, and achieve the effect of high stability, good stability and increased affinity

Active Publication Date: 2017-06-20
SOUTH CHINA UNIV OF TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the stabilizers in the prior art cannot meet the requirements of asphalt materials for high stability

Method used

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  • An asphalt stabilizer, a preparing method thereof and emulsified asphalt
  • An asphalt stabilizer, a preparing method thereof and emulsified asphalt
  • An asphalt stabilizer, a preparing method thereof and emulsified asphalt

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preparation example Construction

[0041] The present invention also provides a preparation method of the asphalt stabilizer described in the above technical scheme, comprising the following steps:

[0042] mixing polyvinyl alcohol, aluminum silicate, calcium chloride, montmorillonite and vinyl silicone rubber to obtain a premix, the particle size of the premix is ​​100-200 mesh;

[0043] The premix, defoamer and water are thermally mixed to obtain an asphalt stabilizer.

[0044] The invention mixes polyvinyl alcohol, aluminum silicate, calcium chloride, montmorillonite and vinyl silicon rubber to obtain a premix, and the particle size of the premix is ​​100-200 mesh. In the present invention, preferably, the polyvinyl alcohol, aluminum silicate, calcium chloride, montmorillonite and vinyl silicone rubber can be mixed and then pulverized, or pulverized and then mixed.

[0045] The present invention has no special requirements on the mixing order of the polyvinyl alcohol, aluminum silicate, calcium chloride, mo...

Embodiment 1

[0061] Raw material mass ratio: 25 parts of polyvinyl alcohol, 15 parts of aluminum silicate, 15 parts of calcium chloride, defoamer: 2 parts of polydimethylsiloxane, 80 parts of montmorillonite, 25 parts of vinyl silicone rubber, 50 parts of water.

[0062] Add polyvinyl alcohol, calcium chloride, montmorillonite, and vinyl silicone rubber that meet the required weight to the aluminum silicate for premixing; put the mixture into a grinder, and grind it so that the particle size is about 200 mesh; Add water and defoamer according to the stated weight parts to the ground premix, and then shear at 155°C at a high speed for 20 minutes at a speed of 15 rpm to mix the premix evenly to obtain stable asphalt. agent.

[0063] The asphalt stabilizer is used in the emulsified asphalt, and the obtained emulsified asphalt is placed for 5 days, and the difference in the evaporation residue percentage of the upper and lower emulsion parts of the emulsified asphalt is measured according to ...

Embodiment 2

[0065] Raw material mass ratio: 20 parts of polyvinyl alcohol, 20 parts of aluminum silicate, 20 parts of calcium chloride, defoamer: 2 parts of GP glycerol polyether, 80 parts of montmorillonite, 20 parts of vinyl silicone rubber, 50 parts of water share.

[0066] Add polyvinyl alcohol, calcium chloride, montmorillonite, and vinyl silicone rubber that meet the required weight to aluminum silicate for premixing; put the mixture into a grinder, and grind it so that the particle size is about 150 mesh; Add water and defoamer in accordance with the stated weight parts to the ground premix, and then shear at 150°C at a high speed for 60 minutes at a speed of 15 rpm to mix the premix evenly to obtain a stable asphalt agent.

[0067] The asphalt stabilizer is used in emulsified asphalt, and the obtained emulsified asphalt is placed for 5 days, and the difference in the evaporation residue percentage of the upper and lower emulsion parts of the emulsified asphalt is measured accordi...

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Abstract

An asphalt stabilizer, a preparing method thereof and emulsified asphalt are provided. The asphalt stabilizer includes 10-50 parts of poly(vinyl alcohol), 10-50 parts of aluminum silicate, 10-50 parts of calcium chloride, 2-4 parts of a defoamer, 20-100 parts of montmorillonite, 10-50 parts of vinylsiloxane rubber and 20-80 parts of water. The asphalt stabilizer can meet high stability requirements of asphalt materials. According to experiment results in embodiments, after the emulsified asphalt modified with the asphalt stabilizer is allowed to stand for 5 days, the difference between evaporation residue percentages of upper and lower emulsion parts of the emulsified asphalt, which is measured according to ASTM regulations, is 1.6-1.8%, thus proving that stability is good.

Description

technical field [0001] The invention relates to the technical field of road asphalt, in particular to an asphalt stabilizer, a preparation method thereof and an emulsified asphalt. Background technique [0002] Asphalt pavement refers to various types of pavement paved with asphalt materials mixed with mineral materials. Asphalt materials improve the ability of paving aggregates to resist road damage from driving and natural factors, making the road smooth, less dusty, impermeable and durable. Asphalt pavement is the most widely used advanced pavement in road construction. [0003] With the continuous development of the transportation industry in various countries, the requirements for the road surface are continuously improved, and the quality requirements for the asphalt used for paving the road surface are also continuously increased. Because ordinary road asphalt has the disadvantages of easy softening at high temperature, brittle cracking at low temperature, fatigue c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L29/04C08L83/07C08L95/00C08K3/34C08K3/16
CPCC08L29/04C08L83/04C08L95/00C08L2205/025C08L2205/03C08L2205/035C08K3/34C08K2003/162C08K3/346C08L53/02
Inventor 虞将苗苏国城莫广亮马平川杨伟儒郭朱屹罗晗卢健元陈丽娟王卓炜李雅坤
Owner SOUTH CHINA UNIV OF TECH