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Ultrathin wearing layer modified asphalt and preparation method thereof

A technology of modified asphalt and wear layer, which is applied in building components, building insulation materials, construction, etc., can solve the problems of high price of eucommia glue and failure to provide 135°C viscosity, etc., and achieve the effect of simple operation and reasonable price

Inactive Publication Date: 2016-12-21
CNOOC TAIZHOU PETROCHEM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The price of Eucommia gum is high. From the perspective of cost, it is usually not used to modify asphalt, and the two indicators of viscosity at 135°C and ductility at 5°C after aging are not provided in the examples.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0040] Its preparation method comprises the following steps:

[0041] 1. Heat the base asphalt;

[0042] 2. Add the modifier, compatibilizer and anti-aging agent to the base asphalt at the same time, and stir at a constant temperature;

[0043] 3. Turn on the high-speed shearing machine to shear and disperse;

[0044] 4. Add stabilizer and stir for development;

[0045] 5. Add the viscosity regulator and continue to stir to obtain the ultra-thin wear layer modified asphalt.

[0046] An ultra-thin wearing layer modified asphalt of the present invention, the suitable mass percentage is:

[0047] Base bitumen 60.0%~63.5%

[0048] Modifier SBS3.8%~4.0%

[0049] Compatibilizer 2.5%~2.8%

[0050] Stabilizer 0.18%~0.20%

[0051] Viscosity regulator 2.6%~3.0%

[0052] Anti-aging agent 0.38%~0.5%

[0053] The invention relates to an ultra-thin wearing layer modified asphalt, wherein the base asphalt has a penetration of 60 dmm to 80 dmm; the modifier is linear SBS with an aver...

Embodiment 1

[0065] Use minus four-line distillate oil as compatibilizer. Weigh 600g asphalt, 25g compatibilizer, 40g modifier, 2.0g stabilizer, 30g viscosity modifier, 5g anti-aging agent. Heat the base asphalt to 180°C, add the modifier, compatibilizer and anti-aging agent to the base asphalt at the same time and stir, heat up to 192°C and stir for 15 minutes, then turn on the high-speed shearing machine and cut at 192°C After dispersing for 45 minutes, add stabilizer, stir and develop at 192°C for 20 hours, finally add viscosity modifier, and continue stirring at 192°C for 1 hour to obtain ultra-thin wearing layer modified asphalt. The properties are shown in Table 2.

Embodiment 2

[0067] Use minus third-line distillate oil as compatibilizer. Weigh 635g of asphalt, 28g of compatibilizer, 38g of modifier, 1.8g of stabilizer, 26g of viscosity modifier, and 3.8g of anti-aging agent. Heat the base asphalt to 180°C, add the modifier, compatibilizer and anti-aging agent to the base asphalt at the same time and stir, heat up to 188°C and stir for 15 minutes, then turn on the high-speed shearing machine and cut at 188°C After dispersing for 45 minutes, add stabilizer, stir and develop at 188°C for 24 hours, finally add viscosity modifier, and continue stirring at 188°C for 1 hour to obtain modified asphalt with ultra-thin wearing layer. The properties are shown in Table 2.

[0068] The composition, preparation method and test data of the modified asphalt of the following comparative examples are all from the examples of Chinese patent CN103319906A, and are only used for comparison.

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Abstract

The invention relates to ultrathin wearing layer modified asphalt and a preparation method thereof. The ultrathin wearing layer modified asphalt is prepared from, by mass, 79.8%-91.6% of matrix asphalt, 3.0%-8.0% of a modifier SBS, 2.0%-4.0% of compatilizer, 0.1%-0.5% of a stabilizer, 2.0%-8.0% of a viscosity regulating agent and 0.3%-0.7% of an anti-aging agent. The preparation method of the ultrathin wear layer modified asphalt comprises the following steps that 1, the matrix asphalt is heated; 2, the modifier, the compatilizer and the anti-aging agent are added into the matrix asphalt simultaneously, and stirring is conducted at constant temperature; 3, a high-speed shearing machine is started, and shearing and dispersing are conducted; 4, the stabilizer is added, and stirring and developing are conducted; 5, the viscosity regulating agent is added, stirring continues, and then the ultrathin wearing layer modified asphalt can be prepared. The ultrathin wearing layer modified asphalt prepared through the method has the high 60-DEG-C viscosity (higher than 50,000 Pa.S) and the low 135-DEG-C viscosity (lower than 3.0 Pa.S).

Description

technical field [0001] The invention belongs to the field of petrochemical industry, and in particular relates to an ultra-thin wearing layer modified asphalt and a preparation method thereof. Background technique [0002] The ultra-thin wear layer is mainly used to solve non-structural cracks, slight rutting and functional restoration of the pavement surface layer, and can also be applied to the surface wear layer of new roads. Compared with other preventive maintenance methods, the ultra-thin wear layer has a good surface roughness, high drainage performance, and improves driving safety in rainy days; the noise reduction effect is remarkable, and it has outstanding advantages against the noise of urban road tunnels; the thickness is only 1.5 -2.5 cm, using special paving equipment for construction, spraying modified emulsified asphalt at a temperature of 60°C to 80°C, paving modified asphalt mixture and spraying modified emulsified asphalt simultaneously, and the super-fil...

Claims

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Application Information

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IPC IPC(8): C08L95/00C08L53/02C08L91/00C08L91/06C08L9/06C08L21/00C08K3/04
CPCC08L95/00C08L2201/08C08L2205/035C08L2205/08C08L2555/54C08L2555/64C08L2555/80C08L2555/84C08L53/02C08L91/00C08L91/06C08L9/06C08L21/00C08K3/04
Inventor 雷勇王涛夏强斌何波张金钧费恒志张晓峰于慧明蔡璐李木青
Owner CNOOC TAIZHOU PETROCHEM CO LTD
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