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A kind of purified recycled asphalt concrete and its preparation process

A technology for regenerating asphalt and concrete, applied in the field of asphalt concrete processing, can solve the problems of flying dust and poor dust absorption of asphalt concrete, and achieve the effects of slowing down the aging speed, good mixing effect and improving adsorption capacity.

Active Publication Date: 2021-11-19
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 asphalt concrete has poor dust-absorbing properties, the road paved with the asphalt concrete is prone to dust flying when vehicles pass by quickly. The first purpose of the present invention is to provide a purified recycled asphalt concrete , by making the purified recycled asphalt concrete have a good void and dust absorption effect to solve the above technical problems, it has a good adsorption effect on the dust on the road, can avoid dust flying, and is conducive to ensuring driving safety and environmental cleanliness

Method used

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  • A kind of purified recycled asphalt concrete and its preparation process
  • A kind of purified recycled asphalt concrete and its preparation process
  • A kind of purified recycled asphalt concrete and its preparation process

Examples

Experimental program
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Effect test

Embodiment 1

[0046] Example 1: A purified recycled asphalt concrete, the components and their corresponding parts by weight are shown in Table 1, and were prepared through the following steps:

[0047] Step 1: Stir and dry new aggregates, diatomite, steel slag and porous ceramics in corresponding parts by weight in a drying barrel. The temperature is controlled at 100°C, the time is 40min, and the stirring speed is 900rpm to obtain a dry mixed material;

[0048] 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 1200rpm for 10min;

[0049] 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 for stirring. The temperature in the mixing tank is maintained at 170°C, the stirring speed is 1200rpm, and the time is 25min. Then add the remaining SBS modified asphalt and conducti...

Embodiment 2-8

[0052] Example 2-8: A purification type recycled asphalt concrete, the difference from Example 1 is that each component and its corresponding parts by weight are shown in Table 1.

[0053] Each component and parts by weight thereof in table 1 embodiment 1-8

[0054]

[0055]

Embodiment 9

[0056] Example 9: A purified 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 25mm The limestone is composed of 1.5:2.5:7.5:1:3.5 in parts by weight.

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Abstract

The invention discloses a purified recycled asphalt concrete and a preparation process thereof, relates to the technical field of asphalt concrete processing, and solves the problem that the asphalt concrete is poor in dust absorption, which makes it easy for roads paved with the asphalt concrete to pass quickly when vehicles pass by. There is a problem of flying dust. A purified recycled asphalt concrete, comprising the following components in parts by weight: 70-80 parts of new aggregate; 4-6 parts of SBS modified asphalt; 0.2-0.3 parts of mineral powder; 18-22 parts of recycled asphalt mixed old material ; 0.1-0.2 parts of regeneration agent; 2.5-4.5 parts of whisker filler; 6-8 parts of steel slag; 1.6-1.8 parts of porous ceramics; 1.2-1.6 parts of diatomite; The purified recycled asphalt concrete in the present invention has a good adsorption effect on the dust on the road, so that when the vehicle is running fast on the road, it is beneficial to avoid dust flying, ensure the safety of the vehicle in the process, and also play a role in the environment. Good protection.

Description

technical field [0001] The invention relates to the technical field of asphalt concrete processing, in particular to a purified recycled 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] A Chinese invention patent with application publication number CN108147728A discloses a rubber asphalt concrete and its preparation method. The raw material components of the rubber asphalt concrete include: 50-60 parts of mineral powder fly ash, 20-30 parts of stone chips, limestone 6-8 parts, 10-15 parts of cement, 5-10 parts of supramolecular rubber composite material, 6-10 parts of asphalt, 2-4 parts of glass fiber, 2-3 parts of ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B26/26
CPCC04B26/26C04B2111/0075C04B2111/94C04B14/28C04B14/08C04B18/027C04B18/142C04B18/12C04B14/4612C04B14/386C04B2103/0068
Inventor 时兆武
Owner SHANGHAI SHISHEN IND & TRADE CO LTD
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