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A kind of alpine modified asphalt and its preparation method

A modified asphalt and alpine technology, which is applied in building components, building insulation materials, buildings, etc., can solve the problems of asphalt pavement cracking, high maintenance costs, and difficult pavement laying, so as to delay performance attenuation, improve stability, and improve performance Effect

Active Publication Date: 2019-02-19
柳小军
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The alpine modified asphalt is made of scientific compatibility of high-molecular polymer and high-quality matrix asphalt, and mixed with solid-liquid combined chemical stabilizers, which solves the problems of cracking and deformation of asphalt pavement in alpine regions and overcomes these Defects such as difficulty in pavement paving, high late repair rate and high maintenance cost caused by problems

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] A kind of alpine modified asphalt in Example 1 of the present invention is made of the following raw materials in weight ratio: 90 parts of base asphalt, 5 parts of SBS modifier, 0.3 part of chemical stabilizer, 3.5 parts of Sasobit viscosity reducer; wherein, By weight percentage, described chemical stabilizer comprises solid stabilizer 60% and liquid stabilizer 40%; Described solid stabilizer comprises methyl cellulose sodium 40%, polyvinyl alcohol 35%, phenyl propionate octadecyl alcohol Esters 25%, the liquid stabilizers include dibutyltin dilaurate 30%, isooctyl dimethyltin dithioacetate 30%, triphenyl phosphite 25%, zinc di-n-butylxanthate disulfide 15%.

[0029] A method for preparing alpine modified asphalt in Example 1, specifically: Preheat the base asphalt in the formula amount to 170°C in a high-temperature tank and pump it into the premix tank, then add the formula amount in the premix tank SBS modifier, chemical stabilizer and Sasobit viscosity reducer to...

Embodiment 2

[0031] A kind of alpine modified asphalt in Example 2 of the present invention is made of the following raw materials in weight ratio: 85 parts of base asphalt, 7 parts of SBS modifier, 0.5 part of chemical stabilizer, 4 parts of Sasobit viscosity reducer; wherein, By weight percentage, described chemical stabilizer comprises solid stabilizer 70% and liquid stabilizer 30%; Described solid stabilizer comprises methyl cellulose sodium 50%, polyvinyl alcohol 30%, phenyl propionate octadecyl alcohol ester 20%, the liquid stabilizer includes dibutyltin dilaurate 25%, isooctyl dimethyltin dithioacetate 30%, triphenyl phosphite 20%, zinc di-n-butyl xanthate disulfide 25%.

[0032] A method for preparing alpine modified asphalt in Example 2, specifically: Preheat the base asphalt in the formula amount to 180°C in a high-temperature tank and then pump it into the premix tank, and then add the formula amount in the premix tank SBS modifier, chemical stabilizer and Sasobit viscosity red...

Embodiment 3

[0034] A kind of alpine modified asphalt in Example 3 of the present invention is made of the following raw materials in weight ratio: 80 parts of base asphalt, 3 parts of SBS modifier, 0.8 part of chemical stabilizer, 3 parts of Sasobit viscosity reducer; wherein, By weight percentage, described chemical stabilizer comprises solid stabilizer 70% and liquid stabilizer 30%; Described solid stabilizer comprises methyl cellulose sodium 45%, polyvinyl alcohol 35%, phenyl propionate octadecyl alcohol ester 20%, the liquid stabilizer includes dibutyltin dilaurate 35%, isooctyl dimethyltin dithioacetate 30%, triphenyl phosphite 20%, zinc di-n-butyl xanthate disulfide 15%.

[0035] A method for preparing alpine modified asphalt in Example 3, specifically: Preheat the base asphalt in the formula amount to 170°C in a high-temperature tank and pump it into the premix tank, then add the formula amount in the premix tank SBS modifier, chemical stabilizer and Sasobit viscosity reducer to o...

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Abstract

The invention relates to high and cold area modified asphalt and a preparation method thereof, wherein the high and cold area modified asphalt is mainly prepared from the following raw materials in parts by weight: 80-90 parts of matrix asphalt, 3-10 parts of an SBS modifier, 0.2-0.8 part of a chemical stabilizer, and 2.5-5.5 parts of a viscosity reducer; according to the weight percentage, the chemical stabilizer comprises 60%-70% of a solid stabilizer and 30%-40% of a liquid stabilizer. The high and cold area modified asphalt is prepared by carrying out scientific compatibility of the macromolecular polymer, the auxiliary agents and the high-quality matrix asphalt, adding the solid and liquid combined chemical stabilizer and mixing; the problems that asphalt road surfaces in high and cold area are prone to cracking and deformation are solved, and the defects of difficult road surface paving, high later repair rate and high maintenance cost caused by the problems are overcome.

Description

technical field [0001] The invention relates to the technical field of road materials, in particular to an alpine modified asphalt and a preparation method thereof. Background technique [0002] Alpine asphalt refers to pavement materials specially used for road construction in alpine regions. Northeast and northwest parts of my country belong to alpine regions. Since the asphalt mixture is a homogeneous mixture of asphalt and stone, and the fine gaps between the stone structures are filled with asphalt, the asphalt will be in a state of "thermal expansion and contraction" at high and low temperatures. In addition, if the asphalt itself The toughness is not enough, coupled with the repeated action of vehicle load, it is extremely easy to cause serious damage to the asphalt pavement. Especially in alpine areas with long sunshine time, strong ultraviolet rays, high altitude, low temperature, and large temperature difference between day and night. These extremely harsh natural...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L95/00C08L53/02C08L1/28C08L29/04C08K5/101C08K5/57C08K5/58C08K5/523
CPCC08L95/00C08L2205/035C08L53/02C08L1/286C08L29/04C08K5/101C08K5/57C08K5/58C08K5/523
Inventor 柳小军
Owner 柳小军
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