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Ultrathin asphalt mixture, and preparation method and application thereof

An asphalt mixture, an ultra-thin technology, is used in roads, on-site coagulating pavements, roads, etc., which can solve the problems of difficulty in reaching the fatigue performance, energy waste, and high cost, and achieve good anti-scattering performance, low cost, and high cost. Use performance-enhancing effects

Active Publication Date: 2017-09-12
厦门华特公路沥青技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to overcome the problem that the ultra-thin asphalt mixture in the prior art is only modified by SBS, the cost is high, the viscosity is high, and it is easy to settle under the condition of high dosage, which requires agitator to continuously stir, resulting in Energy waste, and when the asphalt mixture composed of natural rock asphalt is applied to the surface layer of asphalt pavement, the fatigue performance is difficult to meet the standard, and the thickness of the prepared surface layer must be as high as 4-5cm. To provide an ultra-thin asphalt mixture and its preparation method, application

Method used

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  • Ultrathin asphalt mixture, and preparation method and application thereof
  • Ultrathin asphalt mixture, and preparation method and application thereof
  • Ultrathin asphalt mixture, and preparation method and application thereof

Examples

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Embodiment 1

[0044] The raw material components of this example are as described in Table 2, and the following percentages are the mass percentages of each component relative to the total amount of raw materials.

[0045] Table 2

[0046]

[0047] The gradation type of the ultra-thin asphalt mixture in this example is improved ECA-10, and the specific gradation composition is shown in Table 3.

[0048] table 3

[0049]

[0050] The preparation method of the ultra-thin asphalt mixture of the present embodiment comprises the following steps:

[0051] (1) Add aggregates at 180°C, polyester fiber and Indonesian Buton rock asphalt into the mixing pot, and mix at 180°C for 45 seconds to obtain mixture A;

[0052] (2) Mix mixture A and 70# base asphalt at 150°C for 15 seconds at 180°C to obtain mixture B;

[0053] (3) Mix mixture B with mineral powder for 5 seconds to obtain ultra-thin asphalt mixture.

Embodiment 2

[0055] The raw material components of this embodiment are as described in Table 2.

[0056] The gradation type of the ultra-thin asphalt mixture in this example is improved ECA-10, and the specific gradation composition is shown in Table 3.

[0057] The preparation method of the ultra-thin asphalt mixture of the present embodiment comprises the following steps:

[0058] (1) Add aggregates at 190°C, polyester fiber and Indonesian Buton rock asphalt into the mixing pot, and mix at 175°C for 50 seconds to obtain mixture A;

[0059] (2) Mix mixture A and 70# base asphalt at 160°C for 13 seconds at 175°C to obtain mixture B;

[0060] (3) Mix mixture B with mineral powder for 8 seconds to obtain ultra-thin asphalt mixture.

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Abstract

The invention discloses an ultrathin asphalt mixture, and a preparation method and an application thereof. The ultrathin asphalt mixture comprises, by mass, 80-90% of aggregates, 2-7% of mineral powder, 2.5-5% of Indonesian Buton rock asphalt, 4-6% of matrix asphalt and 1-2% of polyester fibers; and the grading type of the aggregates is improved ECA-10. The ultrathin asphalt mixture has excellent comprehensive properties, has greatly improved anti-rut performance, mechanical performances, wear resistance, water loss resistance, durability and other use performances, and also has the advantages of excellent low-temperature performances, strong self-adhesion, basic zero water seepage, and high cost performance. The preparation method of the ultrathin asphalt mixture has the advantages of simplicity and low cost. The thickness of an ultrathin asphalt pavement made of the mixture is 2-2.5 cm, the cost is 60-70 yuan / m<2> only, and the mixture has a high cost performance and wide market application values.

Description

technical field [0001] The invention relates to an ultra-thin asphalt mixture and its preparation method and application. Background technique [0002] As my country's road engineering gradually shifts from new construction to maintenance, the demand for asphalt pavement maintenance technology is gradually increasing. Soon after urban roads using asphalt pavement are built and put into use, the surface layer, especially the surface layer, often has no structural damage to the base layer, due to external factors such as vehicle load, temperature, precipitation, and internal factors such as material properties and quality defects. Under the joint influence, there are usually early diseases of different degrees such as surface aging, loss of fine aggregate, spalling of coarse aggregate, potholes and slight cracks. These diseases not only affect the traffic capacity of the road, but more importantly, greatly shorten the service life of the road. In order to reduce the impact o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B24/36E01C7/35
Inventor 许春生吴德龙
Owner 厦门华特公路沥青技术有限公司
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