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Modified road asphalt

A road asphalt modification technology, which is applied to building components, building insulation materials, buildings, etc., can solve the problems of roads being easily damaged, and achieve the improvement of asphalt softening point, low temperature crack resistance, and penetration reduction. Effect

Inactive Publication Date: 2018-05-15
杭州睿琦化工科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The modification made for this type of material improves its properties by increasing their flexibility at lower temperatures while maintaining good performance during use over longer periods or under different conditions such as rainwater exposure.

Problems solved by technology

This patented technical problem addressed in this patents relates to improving the performance and lifespan of roads during peak hours when they get very warm due to sunlight exposure at night time. Existing methods involve adding more layers of bituminous mixture onto existing roads but these techniques result in decreased adhesion between aggregating agents like cement and rocks causing cracks which could lead to failure of older ones.

Method used

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  • Modified road asphalt

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Modified road asphalt raw materials: 100 parts of asphalt, 9 parts of styrene-butadiene rubber, 5 parts of neoprene rubber, 3 parts of polyvinyl chloride, 1 part of N-isopropyl-N-phenyl-p-phenylenediamine, phthalic acid 4 parts of dimethyl ester, 0.5 part of p-tolualdehyde, 3 parts of flame retardant, and 0.45 part of dispersant.

[0030] The flame retardant is obtained by uniformly stirring and mixing aluminum diethylphosphate, aluminum methylpropionate and aluminum 2-carboxyethylphenylphosphinate in a mass ratio of 1:1:1.

[0031] The dispersant is obtained by stirring and mixing sodium pyrophosphate, potassium tripolyphosphate and sodium stearate uniformly in a mass ratio of 1:1:1.

[0032] The preparation method of modified road asphalt:

[0033] Heat the asphalt to a temperature of 190°C and completely melt it, then add styrene-butadiene rubber, neoprene rubber, polyvinyl chloride, N-isopropyl-N-phenyl-p-phenylenediamine, dimethyl phthalate, p-phenylenediamine To...

Embodiment 2

[0035] It is basically the same as Example 1, the only difference is that the flame retardant is obtained by stirring and mixing aluminum methionyl phosphinate and aluminum 2-carboxyethylphenyl phosphinate in a mass ratio of 1:1 .

Embodiment 3

[0037] It is basically the same as in Example 1, except that the flame retardant is obtained by stirring and mixing uniformly diethylaluminum phosphate and 2-carboxyethylphenylaluminum phosphinate at a mass ratio of 1:1.

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Abstract

The invention discloses modified road asphalt. The modified road asphalt comprises, by weight, 95-105 parts of asphalt, 5-15 parts of butadiene styrene rubber, 2-8 parts of chloroprene rubber, 1-5 parts of polyvinyl chloride, 0.5-5 parts of N-isopropyl-N-phenyl-p-phenylenediamine, 1-10 parts of dimethyl phthalate, 0.1-1 part of p-tolualdehyde, 1-5 parts of flame retardants and 0.2-0.9 part of dispersing agents. The modified road asphalt has the advantages that the asphalt softening point can be increased, the needle penetration can be lowered, the high-temperature stability can be improved, the low-temperature ductility can be greatly improved, and the low-temperature crack resistance can be obviously improved.

Description

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Claims

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Application Information

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Owner 杭州睿琦化工科技有限公司
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