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A kind of asphalt mixture for paving and preparation method thereof

An asphalt mixture and asphalt technology, applied in the field of asphalt mixture for paving and its preparation, can solve the problems of affecting the strong stability of pavement, tight effective compaction time, insufficient compaction of the mixture, etc., so as to prolong the effective compaction. Time, good compaction effect, good compactability effect

Active Publication Date: 2022-07-29
中城园林工程有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The inventor believes that during the transportation and paving process of the hot asphalt mixture, the cooling rate is relatively fast, resulting in a tight time for its effective compaction. The temperature of the mixture has dropped below the minimum rolling temperature before the paving is completed, making Insufficient compaction or segregation of the mixture, which affects the strong stability of the paved road surface

Method used

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  • A kind of asphalt mixture for paving and preparation method thereof
  • A kind of asphalt mixture for paving and preparation method thereof
  • A kind of asphalt mixture for paving and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] A road asphalt mixture, the preparation method of which is:

[0046]S1. Mix 40kg of crushed stone, 20kg of steel slag, 20kg of artificial sand, 12.5kg of mineral powder, 12.5kg of fly ash, and 50kg of expanded vitrified microbeads to obtain mixture A; wherein the particle size of the expanded vitrified microbeads is 0.5-2.5 mm;

[0047] S2. Mix 2kg organic warm-mixing agent, 10kg glass fiber, 3.5kg water-based epoxy resin emulsion and 0.7kg silane coupling agent to obtain mixture B; wherein the length of glass fiber is 3-9mm;

[0048] S3. Heat 15 kg of asphalt to 160° C., continue stirring, and put mixture A and mixture B into the asphalt, and mix them uniformly to obtain an asphalt mixture.

Embodiment 2-9

[0050] Different from Example 1, the consumption of each raw material is different, see Table 1 for details.

[0051] Table 1 embodiment 1-9 raw material proportioning table (kg)

[0052]

[0053]

Embodiment 10-11

[0055] Different from Example 3, in step S3, the asphalt is heated to 145°C and 180°C, respectively.

[0056] performance test

[0057] The porosity and Marshall stability of the compacted mixtures of the asphalt mixtures in Examples 1-11 were tested according to the "Highway Engineering Asphalt and Asphalt Mixture Test Regulations" JTG E20-2011. The test results are shown in Table 2.

[0058] To test the thermal insulation performance of the asphalt mixture, the test method is as follows: at room temperature, after heating the test sample to 160°C, stop heating and start stirring with a stirring speed of 10r / min. Measure the temperature three times at 30min and calculate the average to get T30 and record 160-T30 (30min cooling amount), measure the temperature three times at 60min and calculate the average to get T60 and record T60-T30, after 120min measure the temperature three times and calculate the average to get T120 and record T120–T60, the test results are shown in Tab...

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Abstract

The present application relates to the field of paving materials, and specifically discloses an asphalt mixture for paving and a preparation method thereof. An asphalt mixture for paving, which is prepared from the following raw materials by weight: 80-260 parts of aggregate, 5-25 parts of admixture powder, 15-40 parts of asphalt, and 20-50 parts of expanded vitrified microspheres parts, 2-6 parts of organic warm mix agent, 5-10 parts of fibers, 3.5-10 parts of water-based epoxy resin emulsion, and 0.3-0.7 parts of silane coupling agent; the preparation method is: The vitrified microbeads are mixed and then added to the hot asphalt together with the admixture, and mixed uniformly to obtain the asphalt mixture. The asphalt mixture for paving of the present application has the advantages of good compaction effect, high stability and slow cooling rate.

Description

technical field [0001] The present application relates to the field of paving materials, and more particularly, to an asphalt mixture for paving and a preparation method thereof. Background technique [0002] Asphalt mixture is a mixture of asphalt as road oil and a certain proportion of aggregate, which is used for pavement pavement. In the asphalt mixture, the asphalt is used as a cementitious material to coat and bond the aggregate and other admixtures; when heated, the asphalt becomes a liquid with high viscosity, and the aggregate and the admixture are added to the asphalt for stirring. Evenly, when laying the road, as the temperature decreases, the asphalt and aggregate bond with each other and gradually solidify to form a road with a certain strength. [0003] The inventor believes that the rapid cooling rate of the hot asphalt mixture during the transportation and paving process results in a tight time for effective compaction. Insufficient compaction or segregatio...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B26/26
CPCC04B26/26C04B2111/0075C04B14/02C04B14/06C04B14/24C04B18/142C04B18/141C04B18/08C04B14/42C04B24/281C04B24/42C04B2103/0068
Inventor 臧贵贺
Owner 中城园林工程有限公司
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