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Asphalt mixture and preparation method thereof

A technology of asphalt mixture and mixture, which is applied in the fields of anti-hugging asphalt mixture and its preparation, and anti-rutting. It can solve problems such as the viscosity of asphalt at 60°C is not up to standard, and achieve the improvement of rutting dynamic stability, increase asphaltene content, and improve The effect of anti-rutting performance

Active Publication Date: 2015-04-29
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Aiming at the problem that the viscosity of road asphalt at 60°C is not up to standard and the problems of rutting and hugging on the asphalt pavement in the prior art, the present invention provides an asphalt mixture and its preparation method, which can improve the anti-rutting and anti-hugging performance of the asphalt mixture

Method used

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  • Asphalt mixture and preparation method thereof
  • Asphalt mixture and preparation method thereof

Examples

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Effect test

Embodiment 1

[0034] Weigh 99.8 kg of vacuum residue produced by Panjin Asphalt Plant (penetration of 138 1 / 10mm) as base asphalt and heat it to 110°C; weigh 0.2 kg of p-phenanthrenequinone. Set the stirring speed at 1400 rpm, slowly add p-phenanthrenequinone to the asphalt, and after all the p-phenanthrenequinone is added, stir for 40 minutes to obtain the special road petroleum asphalt used in the present invention. See Table 1 for asphalt properties.

[0035] Pre-heat the special asphalt mixture stirring tank to a constant temperature of 130℃; prepare the Liaoyang andesite aggregate into AC-10 aggregate with a total weight of 88kg and heat it to 130℃ for standby; weigh the above-mentioned special road petroleum asphalt 6.0 kg, heated to 110℃ for standby; respectively weigh 3.0kg of cement and slag powder. After the temperature of the mixing tank, aggregate, and asphalt is constant, add the above aggregate, cement, and mineral powder to the mixing tank and stir for 2 minutes; then add the w...

Embodiment 2

[0037] Weigh 97.7 kg of blended bitumen produced by Yingkou Asphalt Plant (penetration of 112 1 / 10mm) as base bitumen, and heat to 120°C; weigh 1.0 kg of o-benzoquinone, 0.9 kg of α-anthraquinone, and 0.4 of o-phenanthrenequinone kg, set the stirring speed to 1000 rpm, slowly add the above quinone compound to the asphalt, either separately or after mixing. After all the additions are completed, stir for 70 minutes to obtain the road petroleum asphalt of the present invention. See Table 1 for asphalt properties.

[0038] Preheat the special asphalt mixture mixing tank to a constant temperature of 150℃; prepare the Tieling basalt aggregate into AC-16 aggregate with a total weight of 94kg and heat it to 150℃ for standby; weigh the above-mentioned special road petroleum asphalt 4.0kg, heated to 120℃ for standby; respectively weigh 1.0kg of cement and mineral powder. After the temperature of the mixing tank, aggregate, and asphalt is constant, add the above aggregate, cement, and mi...

Embodiment 3

[0040] Weigh 98.5 kg of straight-run bitumen produced by Qilu Petrochemical Company (penetration of 96 1 / 10mm) as base bitumen, and heat to 130°C; weigh 0.5 kg of α-(1, 4) naphthoquinone and β-position anthraquinone 1.0 kg, set the stirring speed at 1100 rpm, slowly add α-(1, 4) naphthoquinone and β-position anthraquinone to the asphalt. The two can be added separately or after mixing. After all the additions are completed, stir for 60 minutes to obtain the road petroleum asphalt of the present invention. See Table 1 for asphalt properties.

[0041] Pre-heat the special asphalt mixture mixing tank to 160℃ constant temperature; prepare Fushun limestone aggregate to grade AC-13 aggregate, with a total weight of 91kg, heated to 160℃ for standby; weigh the above-mentioned special road petroleum asphalt 5.0 kg, heated to 130℃ for use; respectively weigh 2.0kg of cement and slag powder. After the temperature of the mixing tank, aggregate, and asphalt is constant, add the above aggreg...

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Abstract

The invention discloses an asphalt mixture and a preparation method thereof, and particularly relates to an anti-track and anti-upheaval asphalt mixture and a preparation method thereof. The asphalt mixture comprises the following components in percentage by weight: 4.0-6.0% of special road oil asphalt, 1.0-3.0% of cement, 1.0-3.0% of mineral powder and 88.0-94.0% of aggregates. The preparation method comprises the following steps: (1) a stirring kettle and the aggregates are heated to reach 130-180 DEG C for standby, and the special road oil asphalt is heated to a melted state for standby; (2) the aggregates, the cement and the mineral powder are added into the stirring kettle simultaneously and are uniformly stirred; (3) the special road oil asphalt is added into the stirring kettle and is uniformly stirred and mixed with the aggregated, the cement and the mineral powder which are uniformly mixed in the stirring kettle in advance to obtain the asphalt mixture. Due to the fact that the special road oil asphalt is used for the asphalt mixture, the track dynamic stability of the mixture is substantially improved, the anti-track performance of an asphalt road surface can be obviously improved, and the asphalt mixture is particularly suitable for asphalt roads with heavy traffic load and asphalt roads where tracks are likely to occur in high-temperature areas of the southern area of China.

Description

Technical field [0001] The invention relates to an asphalt mixture and a preparation method thereof, in particular to an anti-rutting and anti-hug asphalt mixture and a preparation method thereof. Background technique [0002] Due to the large-scale and overloading of transportation vehicles, the rutting and embracing phenomenon of asphalt pavement is becoming more and more serious. From the perspective of the cement itself, the low viscosity of asphalt at 60°C is also one of the reasons for this damage. As one of the indicators of asphalt high temperature stability, the viscosity of asphalt at 60°C can well simulate the anti-flow performance of asphalt pavement when the road surface temperature reaches 60°C in summer. The "Technical Requirements for Road Petroleum Asphalt" in the "Technical Specifications for Road Asphalt Pavement Construction" promulgated by the Ministry of Communications officially listed the 60°C dynamic viscosity of road asphalt as the technical index of roa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/04C04B24/36
Inventor 陈保莲李志军宁爱民范思远张静陈闯程国香
Owner CHINA PETROLEUM & CHEM CORP
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