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High-strength asphalt concrete and preparation method thereof

An asphalt concrete, high-strength technology, applied in the field of asphalt concrete, can solve the problems of low structural strength, road potholes and other problems, and achieve the effect of improving structural strength, good quality and high production efficiency

Inactive Publication Date: 2020-08-28
上海佳砼新材料科技发展有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Aiming at the technical problem in the prior art that the road surface has potholes due to the low structural strength of asphalt concrete during use, the first object of the present invention is to provide a high-strength asphalt concrete to solve the above technical problems, which has a higher Structural strength, the advantages of long service life of asphalt concrete pavement

Method used

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  • High-strength asphalt concrete and preparation method thereof
  • High-strength asphalt concrete and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0052] Embodiment 1: as figure 1 , a high-strength asphalt concrete, the components and their corresponding parts by weight are shown in Table 1, and are prepared through the following steps:

[0053] S1, put the aggregate into the drying barrel, stir and dry at 1500rpm and 100°C for 2.5h, add adhesive, mineral powder, silicon nitride, porous ceramics and lignocellulose, and continue to mix evenly to obtain a mixed base material;

[0054] S2, heat the asphalt to 155°C, put it into the mixing tank in S1, and stir at 1200rpm for 15min;

[0055] S3, add chitin and dispersant into the mixing tank of S2, continue to stir and mix at 1200rpm for 10min, and then discharge.

[0056] In this example, limestone aggregate was used as the aggregate; SBS modified asphalt was used as the asphalt; epoxy nitrile rubber was used as the adhesive; sodium lignosulfonate was used as the dispersant.

Embodiment 2-6

[0057] Example 2-6: a high-strength asphalt concrete, the difference from Example 1 is that each component and its corresponding parts by weight are shown in Table 1.

[0058] Each component and parts by weight thereof in table 1 embodiment 1-6

[0059]

Embodiment 7

[0060] Embodiment 7: a kind of high-strength asphalt concrete, the difference from embodiment 1 is that it is prepared through the following steps:

[0061] S1, put the aggregate into the drying barrel, stir and dry at 1700rpm and 110°C for 2.2h, add adhesive, mineral powder, silicon nitride, porous ceramics and lignocellulose, and continue to mix evenly to obtain a mixed base material;

[0062] S2, heat the asphalt to 175°C, put it into the mixing tank in S1, and stir at 1350rpm for 12min;

[0063] S3, add chitin and dispersant into the mixing tank of S2, continue to stir and mix at 1350rpm for 7 minutes, and the material is ready.

[0064] In this embodiment, basalt aggregate is used as the aggregate; neoprene rubber-modified asphalt is used as the asphalt; isoprene rubber is used as the adhesive; and polyethylene glycol is used as the dispersant.

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Abstract

The invention discloses a high-strength asphalt concrete and a preparation method thereof, and relates to the technical field of asphalt concretes. The high-strength asphalt concrete comprises 250-300parts of aggregate, 25-50 parts of asphalt, 3-8 parts of an adhesive, 10-25 parts of mineral powder, 1.5-2.5 parts of lignocellulose, 0.5-1 part of chitin, 1-2 parts of a dispersant, 1-3 parts of silicon nitride and 1-2 parts of porous ceramic. The preparation method comprises the following steps: S1, putting the aggregate into a drying barrel, stirring and drying, adding the adhesive, the mineral powder, the silicon nitride, the porous ceramic and the lignocellulose, and continuously and uniformly mixing to obtain a mixed base material; S2, heating asphalt to 155-200 DEG C, putting the asphalt into a stirring cylinder in step S1, and uniformly stirring; and S3, adding chitin and the dispersant into the stirring cylinder in step S2, uniformly stirring, and discharging to obtain the product. The asphalt concrete disclosed by the invention has the advantages of high structural strength and long service life of an asphalt concrete pavement.

Description

technical field [0001] The invention relates to the technical field of asphalt concrete, more specifically, it relates to a high-strength asphalt concrete and a preparation method thereof. Background technique [0002] Asphalt concrete, commonly known as asphalt concrete, is artificially selected with a certain gradation composition of mineral materials, crushed stone or crushed gravel, stone chips or sand, mineral powder, etc., and a certain proportion of road asphalt materials, mixed under strictly controlled conditions made mixture. [0003] A Chinese invention patent with publication number CN108147771A discloses a kind of asphalt concrete, including the following raw materials in parts by weight, 47 parts of base asphalt, 3 parts of stabilizer, 2 parts of modifier, 7 parts of ultraviolet blocking particles, and 39 parts of concrete share. The stabilizer is sulfur, the modifier is YH791H linear SBS, the concrete is a mixture of sodium sulfite powder, reinforcing fiber,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B26/28
CPCC04B26/285C04B2111/0075
Inventor 黄龙
Owner 上海佳砼新材料科技发展有限公司
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