Regeneration asphalt concrete and preparation technology thereof

A technology for recycling asphalt and concrete, applied in the field of concrete processing, can solve the problems of lower overall stability and poor thermal conductivity of asphalt concrete, etc., and achieve the effects of long service life, avoiding temperature level distribution, and good bonding

Inactive Publication Date: 2019-04-19
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 the overall stability of asphalt concrete is greatly reduced during use due to the poor thermal conductivity of asphalt concrete when the external temperature changes drastically, the first purpose of the present invention is to provide a recycled asphalt concrete, through Improve the heat exchange performance of recycled asphalt concrete to solve the above technical problems. It is not easy to be damaged due to drastic changes in external temperature during use, and it has good stability as a whole.

Method used

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  • Regeneration asphalt concrete and preparation technology thereof
  • Regeneration asphalt concrete and preparation technology thereof
  • Regeneration asphalt concrete and preparation technology thereof

Examples

Experimental program
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Embodiment 1

[0044] Embodiment 1: A kind of recycled asphalt concrete, each component and its corresponding parts by weight are shown in Table 1, and prepared by the following steps:

[0045] Step 1: Stir and dry the new aggregates and high thermal conductivity fillers in corresponding parts by weight in a drying barrel. The temperature is controlled at 80°C, the time is 40min, and the stirring speed is 900rpm to obtain a dry mixture for use;

[0046] Step 2: Put the regenerated asphalt mixed old material into the mixing tank, after preheating, add the regeneration agent, and stir and mix. The temperature in the mixing tank is maintained at 180°C, the stirring speed is 800rpm, and the time is 25min;

[0047] Step 3: Add the dry mixture into the mixing tank, keep the temperature in the mixing tank at 170°C, stir at 800rpm for 30min, add SBS modified asphalt, mix and keep the temperature in the mixing tank At 180°C, the stirring speed is 600rpm, and the time is 15min;

[0048] Step 4: Add m...

Embodiment 2-8

[0050] Example 2-8: A recycled asphalt concrete, the difference from Example 1 is that each component and its corresponding parts by weight are shown in Table 1.

[0051] Each component and parts by weight thereof in table 1 embodiment 1-8

[0052]

[0053]

Embodiment 9

[0054] Example 9: A recycled asphalt concrete, the difference from Example 1 is that the new aggregate is mainly composed of limestone with a particle size range of 0-3mm, 3-5mm, 5-13mm, 13-20mm, and 20-25mm The ratio of parts by weight is 1.5:2.5:7.3:1:3.2.

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Abstract

The invention discloses regeneration asphalt concrete and a preparation technology thereof, relates to the technical field of asphalt processing, and aims at solving the problems that the comprehensive stability of the asphalt concrete is greatly reduced in the using process caused by poor thermal conductivity of the asphalt concrete when external temperature is violently changed. The regenerationasphalt concrete comprises, by weight, 85-90 parts of new aggregates, 6-8 parts of SBS modified asphalt, 0.5-0.9 part of ore powder, 22-25 parts of regeneration asphalt mixed old aggregates, 0.2-0.4part of a regenerant, 2.5-4.5 parts of high-thermal-conductivity filler, 0.2-0.6 part of a heat stabilizer and 0.4-0.8 part of slaked lime powder. The regeneration asphalt concrete has better stability in the using process, the concrete is not easily damaged due to the violent change of external temperature, and the service life is longer.

Description

technical field [0001] The invention relates to the technical field of concrete processing, more specifically, it relates to a recycled asphalt concrete and its preparation process. 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 publication number is CN108358487A, a kind of asphalt concrete filler and asphalt concrete are disclosed. The asphalt concrete filler is made of the following raw materials in parts by weight: 30-50 parts of ceramic waste powder, 5-15 parts of blast furnace slag powder, lime 4 to 10 parts, 10 to 20 parts of cement, 0.4 to 0.8 parts of sodium dodecylsulfonate, and 0.2 to 0.6 parts of stearic acid; the as...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B26/26
CPCC04B26/26C04B14/28C04B18/12C04B18/167C04B2103/0068C04B14/326C04B14/328C04B22/064C04B24/2611C04B24/2652C04B24/085C04B22/02C04B24/24
Inventor 时清照
Owner SHANGHAI SHISHEN IND & TRADE CO LTD
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