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Modified asphalt and preparation method thereof

A technology of modified asphalt and matrix asphalt, which is applied in building components, building insulation materials, construction, etc., and can solve problems such as uneven quality, high price, and technology monopoly

Active Publication Date: 2019-07-05
XIAN HIGHWAY INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, currently the most widely used in my country is the introduction of Shell’s Novachip ultra-thin wear layer technology. The broken-graded asphalt mixture binder used in this technology is a patented product of Shell, which is expensive and monopolized in technology; Asphalt material substitute products have uneven quality, immature products, and defects in performance. For example, Chinese patent CN1569964 uses a star-shaped SBS and a linear SBS composition as a modifier, and the dosage is 2.0% to 10.0% of the weight of the asphalt. The dosage is 0.05%~1.0% of the weight of asphalt; the weight ratio of star SBS and linear SBS is 50:50~100:0
[0005] Therefore, it is very difficult to popularize and apply ultra-thin overlay technology on a large scale.

Method used

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  • Modified asphalt and preparation method thereof
  • Modified asphalt and preparation method thereof
  • Modified asphalt and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] A modified asphalt comprises the following components in parts by mass: Esso 90 # Base bitumen 93 parts, SBS 4303 3.0 parts, SBS LG501 1.5 parts, furfural extraction oil 1.5 parts, GX-1 0.7 parts, inorganic S 0.3 parts.

[0043] The preparation method of the above-mentioned modified asphalt: mix the furfural extraction oil and base asphalt at 2000r / min, heat up to 185°C, add SBS 4303 and SBS LG501, cut under the shear for 30min, add GX-1, get mixed solution;

[0044] The temperature of the mixed solution was lowered to 175° C., and inorganic S was added to obtain the modified asphalt.

Embodiment 2

[0046] A modified asphalt comprises the following components in parts by mass: KLMY90 # 90 parts of base asphalt, 5 parts of SBS 4303, 2 parts of SBS LG501, 2 parts of light aromatic oil, 0.9 parts of GX-1, 0.1 part of the mixture of inorganic S and butyl rubber.

[0047] The preparation method of the above-mentioned modified asphalt: mix light aromatic oil and base asphalt at 2000r / min, heat up to 180°C, add SBS 4303 and SBS LG501, cut under the shear for 30min, add GX-1 , to obtain a mixture;

[0048] The temperature of the mixed solution was lowered to 175° C., and the mixture of inorganic S and butyl rubber was added to obtain the modified asphalt.

Embodiment 3

[0050] A modified asphalt includes the following components in parts by mass: SK90 # Base bitumen 94 parts, SBS 4303 1 part, SBSLG501 2 parts, light aromatic oil 1 part, heavy aromatic oil 0.8 part, GX-1 1 part, inorganic S 0.2 part.

[0051] The preparation method of the above-mentioned modified asphalt: mix light aromatic oil, heavy aromatic oil and base asphalt at 2000r / min, raise the temperature to 185°C, add SBS 4303 and SBS LG501, and cut under the shearing machine for 30min , adding GX-1 to obtain a mixed solution;

[0052] The temperature of the mixed solution was lowered to 175° C., and inorganic S was added to obtain the modified asphalt.

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Abstract

The invention provides modified asphalt and a preparation method thereof, and belongs to the field of highway building materials. The modified asphalt is prepared from, by mass, 90-94 parts of matrixasphalt, 1-5 parts of SBS 4303, 1-2 parts of SBS LG501, 1-2 parts of a compatilizer, 0.5-1 part of an extending agent and 0.1-0.3 part of a stabilizer. According to the data of the embodiment, the modified asphalt has the good performance and meets the specified standard.

Description

technical field [0001] The invention relates to the research field of road building materials, in particular to a modified asphalt and a preparation method thereof. Background technique [0002] According to relevant data, the road maintenance mileage in my country has increased from 2.6821 million kilometers at the end of 2006 (accounting for 77.6% of the total road mileage) to 4.4656 million kilometers at the end of 2015 (accounting for 97.6% of the total road mileage). The demand for road maintenance is showing a rapid growth trend. According to the calculation of major repairs once every 10 years and medium repairs once every 5 years, the mileage of major and medium repairs of roads in my country reaches 800,000 kilometers per year, of which more than 14,000 kilometers are expressways. The national road maintenance investment scale From 112.47 billion yuan at the end of 2006 to 388.99 billion yuan at the end of 2015. The above data shows that my country has entered an era...

Claims

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Application Information

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IPC IPC(8): C08L95/00C08L53/02C08L91/00C08L23/22C08K3/06
CPCC08L95/00C08L2205/025C08L2205/035C08L53/02C08L91/00C08K3/06C08L23/22
Inventor 李晓娟徐希娟李娜刘洪辉李渊周新锋贾德生韩微微王旭张名成
Owner XIAN HIGHWAY INST
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