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A kind of highly absorbent recycled asphalt concrete and its preparation process

A technology of recycled asphalt and high adsorption, applied in the field of asphalt concrete processing, can solve the problems of poor adhesion and cracks on asphalt concrete pavement.

Active Publication Date: 2021-09-14
SHANGHAI SHISHEN IND & TRADE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the problem in the prior art that cracks are likely to appear on the asphalt concrete pavement as a whole due to the poor bonding between new asphalt concrete and old asphalt concrete during laying, the first purpose of the present invention is to provide a kind of highly absorbent recycled asphalt concrete, By adding carbon film scraps, the high-adsorption recycled asphalt concrete has good permeability and adsorption to solve the above technical problems. It has a good combination with the old asphalt concrete on the road, so that the asphalt concrete road as a whole Not prone to cracks during use

Method used

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  • A kind of highly absorbent recycled asphalt concrete and its preparation process
  • A kind of highly absorbent recycled asphalt concrete and its preparation process
  • A kind of highly absorbent recycled asphalt concrete and its preparation process

Examples

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Embodiment 1

[0047] Embodiment 1: A kind of highly adsorptive regenerated asphalt concrete, each component and its corresponding parts by weight are shown in Table 1, and prepared through the following steps:

[0048] Step 1: Stir and dry new aggregates, lignin fibers and steel slag in corresponding parts by weight in a drying barrel. The temperature is controlled at 100° C., the time is 30 minutes, and the stirring speed is 900 rpm to obtain a dry mixture;

[0049] Step 2, put the dry mixture into the mixing tank, heat 60% by weight of SBS modified asphalt to 160°C, add it into the mixing tank evenly within 30s, and stir at a stirring speed of 1000rpm;

[0050] Step 3: Preheat the regenerated asphalt mixed old material to 80°C and add it together with the regeneration agent into the above mixing tank. The temperature in the mixing tank is maintained at 175°C, and stirring is carried out at a stirring speed of 800rpm for 25 minutes. Then add the remaining The SBS modified asphalt and the c...

Embodiment 2-8

[0053] Example 2-8: A kind of highly adsorbent recycled asphalt concrete, the difference from Example 1 is that each component and its corresponding parts by weight are shown in Table 1.

[0054] Each component and parts by weight thereof in table 1 embodiment 1-8

[0055]

Embodiment 9

[0056] Example 9: A kind of highly adsorbent recycled asphalt concrete, the difference from Example 1 is that the new aggregate mainly consists of particle sizes ranging from 0 to 3mm, 3 to 5mm, 5 to 13mm, 13 to 20mm, and 20 to The composition of 25mm limestone is 1.5:2.5:7.2:1:3.2 by weight.

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Abstract

The invention discloses a high-adsorption regenerated asphalt concrete and its preparation process, relates to the technical field of asphalt concrete processing, and solves the problem that the asphalt concrete pavement is easy to be integrated due to the poor bonding between the new asphalt concrete and the old asphalt concrete during laying. There is a problem with cracks. A highly absorbent recycled asphalt concrete, which includes the following components in parts by weight: 75-85 parts of new aggregate; 5-8 parts of SBS modified asphalt; 0.3-0.5 parts of mineral powder; 25 parts; 0.1-0.2 parts of regeneration agent; 2.5-4.5 parts of fiber filler; 4-10 parts of steel slag; 1.6-1.8 parts of carbon film scrap; When the highly adsorptive recycled asphalt concrete in the present invention is used for road paving, it has a good combination with the old asphalt concrete on the road, so that the whole asphalt concrete road is not easy to produce cracks in the process of use, and has good stability.

Description

technical field [0001] The invention relates to the technical field of asphalt concrete processing, more specifically, it relates to a high-adsorption regenerated asphalt concrete and a preparation process 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] In the Chinese invention patent whose application publication number is CN104355569A, a composite modified asphalt concrete is disclosed, which is made of the following raw materials in parts by weight: 100 parts of ore, 3-7 parts of asphalt, 0.05-0.15 parts of chlorinated polyethylene, Aliphatic polyurethane resin 0.2-1.5 parts, serpentine 0.075-1 part, halloysite 0.15-1.5 parts, coupling agent 0.001-0.04 p...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B26/26C04B111/72
CPCC04B26/26C04B2111/0075C04B2111/72C04B14/28C04B18/26C04B18/142C04B18/16C04B14/022C04B18/12C04B24/2611C04B2103/0068C04B24/42C04B14/305C04B14/303C04B14/062
Inventor 时兆武
Owner SHANGHAI SHISHEN IND & TRADE CO LTD