A kind of anti-aging asphalt and preparation method thereof

An anti-aging and asphalt technology, which is applied in building components, building insulation materials, buildings, etc., can solve the problems of not being able to simultaneously improve asphalt’s thermal oxygen resistance and UV aging resistance, and achieve enhanced UV aging resistance and improved thermal oxygen resistance. Aging performance, enhanced adsorption effect

Active Publication Date: 2015-09-30
HUNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The solutions reported in the above patent literatures only improve the thermal oxygen resistance or ultraviolet aging resistance of asphalt unilaterally, but cannot improve the thermal oxygen resistance and ultraviolet aging resistance of asphalt at the same time, and more attention is currently paid to improving the thermal oxygen aging resistance of asphalt performance

Method used

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  • A kind of anti-aging asphalt and preparation method thereof

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Comparison scheme
Effect test

Embodiment 1

[0025] The anti-aging asphalt of this embodiment is made of the following raw materials in mass percentage: 96.9% of asphalt, 3% of organic vermiculite, and 0.1% of ultraviolet absorber UV531.

[0026] The asphalt is road petroleum asphalt with a softening point of 46.3°C and a penetration of 71 dmm at 25°C.

[0027] The preparation of described organic vermiculite:

[0028] (1) Stir 30 parts by mass of 200-mesh expanded vermiculite, 9 parts of sodium chloride, and 600 parts of deionized water at a constant temperature of 60°C for 5 hours, then centrifuge, filter, and wash repeatedly with deionized water into the eluate Does not contain chloride ions;

[0029] (2) Mix the expanded vermiculite treated in step (1) with 600 parts by mass of deionized water, add 9 parts by mass of dioctadecyldimethylammonium chloride, and stir for 5 hours at a constant temperature of 80°C. Afterwards, centrifuge, filter, and repeatedly wash with deionized water until there is no chloride ion, dr...

Embodiment 2

[0037] The anti-aging asphalt of this embodiment is made of the following raw materials in mass percentage: 96.9% of asphalt, 3% of organic vermiculite, and 0.1% of ultraviolet absorber UV531.

[0038] The asphalt is road petroleum asphalt with a softening point of 46.3°C and a penetration of 71 dmm at 25°C.

[0039] The preparation of described organic vermiculite:

[0040] (1) Stir 30 parts by mass of 200-mesh expanded vermiculite, 9 parts by mass of sodium chloride, and 600 parts by mass of deionized water at a constant temperature of 60°C for 5 hours, then centrifuge, filter, and wash repeatedly with deionized water until washed. The effluent does not contain chloride ions;

[0041] (2) Mix the expanded vermiculite treated in step (1) with 600 parts by mass of deionized water, add 9 parts by mass of dioctadecyldimethylammonium chloride, stir at a constant temperature of 80°C for 5 hours, and then Centrifuge, filter, and repeatedly wash with deionized water until there is...

Embodiment 3

[0048] The anti-aging asphalt of this embodiment is made of the following raw materials in mass percentage: 96.7% of asphalt, 3% of organic vermiculite, and 0.3% of ultraviolet absorber UV531.

[0049] The asphalt is road petroleum asphalt with a softening point of 46.3°C and a penetration of 71 dmm at 25°C.

[0050] The preparation of described organic vermiculite:

[0051] (1) Stir 30 parts by mass of 200-mesh expanded vermiculite, 9 parts by mass of sodium chloride, and 600 parts by mass of deionized water at a constant temperature of 60°C for 5 hours, then centrifuge, filter, and wash repeatedly with deionized water until the The liquid does not contain chloride ions;

[0052] (2) Mix the expanded vermiculite treated in step (1) with 600 parts by mass of deionized water, add 9 parts by mass of dioctadecyldimethylammonium chloride, and stir for 5 hours at a constant temperature of 80°C. Afterwards, centrifuge, filter, and repeatedly wash with deionized water until there i...

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Abstract

The invention relates to anti-aging asphalt and a preparation method thereof. The anti-aging asphalt is prepared from the following raw materials in percentage by mass: 93 to 98.9 percent of asphalt, 1 to 6 percent of organized vermiculite and 0.1 to 1 percent of ultraviolet light absorber. The preparation method of the anti-aging asphalt disclosed by the invention comprises the following steps: (1) preparing the following raw materials for later use in percentage by weight: 93 to 98.9 percent of asphalt, 1 to 6 percent of organized vermiculite and 0.1 to 1 percent of ultraviolet light absorber; (2) adding the asphalt into a shear mixer, heating the asphalt to a temperature of 130 to 160 DEG C, adding the organized vermiculite, starting the shear mixer, performing high-speed stirring for 1 to 2 hours at a rotating speed of 2,000 to 6,000 rpm and keeping the temperature in the range of 130 to 160 DEG C; and (3) reducing the stirring speed to 500 to 2,000 rpm, adding the ultraviolet light absorber, keeping the temperature in the range of 130 to 160 DEG C and performing stirring reaction for 0.5 to 2 hours to obtain the anti-aging asphalt. The anti-aging asphalt disclosed by the invention has excellent resistance to thermal oxidation and ultraviolet aging, and can prolong the service life of an asphalt pavement.

Description

technical field [0001] The invention relates to an aging-resistant asphalt and a preparation method thereof, in particular to an aging-resistant asphalt compounded with vermiculite and an ultraviolet absorber and a preparation method thereof. Background technique [0002] Due to the excellent road performance and comfortable driving performance of asphalt pavement, asphalt pavement is mainly used in road construction in countries all over the world. However, asphalt pavement also has diseases such as cracking, potholes, and spalling, which seriously affect the road performance and service life of asphalt pavement. [0003] One of the main causes of asphalt pavement disease is the aging of asphalt, that is, during the use of asphalt pavement, under the action of heat, oxygen, light, etc., asphalt will undergo thermal aging and light aging. [0004] In recent years, more and more attention has been paid to the aging of asphalt, and it has become a research hotspot in the fiel...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L95/00C08K13/06C08K9/04C08K9/02C08K3/34C08K5/07C08K5/3475
Inventor 张恒龙颜可珍杜攀峰
Owner HUNAN UNIV
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