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Asphalt mixture doped with waste glass aggregate and preparation method of asphalt mixture

A technology of asphalt mixture and waste glass, which is applied in the field of road materials, can solve the problems of changing the interlocking structure of the mixture, the decrease of the Marshall stability of the asphalt mixture, and the decline of performance, so as to achieve simple preparation process, promote recycling and reduce production cost low effect

Inactive Publication Date: 2020-11-20
NANJING FORESTRY UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This is because as the glass content increases, the Marshall stability of asphalt mixture decreases, and the dynamic stability value decreases sharply.
The main reason is that the glass surface is smooth and has poor adhesion to asphalt; if the breaking method is unreasonable, the obtained glass aggregate has no obvious angularity, and it is easy to break during the rolling process, thereby changing the intercalation inside the mixture. structure, which degrades its performance

Method used

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  • Asphalt mixture doped with waste glass aggregate and preparation method of asphalt mixture
  • Asphalt mixture doped with waste glass aggregate and preparation method of asphalt mixture

Examples

Experimental program
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Effect test

Embodiment 1

[0024] 12000g of asphalt mixture is used as an example. The raw materials and their dosage are: Sinopec Donghai No. 70 A-grade matrix asphalt 561.0g, 2.36-4.75mm file waste glass aggregate 497.6g, 1.18-2.36mm file waste glass aggregate 394.6g, coarse Aggregate 7223.7g, fine aggregate 2751.1g, ore powder 572.0g; parts by mass are as follows: 4.68 parts of base asphalt, 4.15 parts of 2.36-4.75mm grade waste glass aggregate, 3.28 parts of 1.18-2.36mm grade waste glass collection material, 60.19 parts of coarse aggregate, 22.93 parts of fine aggregate, and 4.77 parts of mineral powder.

[0025] The particle size of waste glass aggregate is greater than 1.18mm and less than 4.75mm; including A with a particle diameter greater than 2.36mm and less than 4.75mm, and B with a particle diameter greater than 1.18mm and less than or equal to 2.36mm, and the mass ratio of A and B is: 29: twenty three. The mineral powder is limestone mineral powder and the particle size of the mineral powd...

Embodiment 2

[0033] 12000g of asphalt mixture is taken as an example. The raw materials and their dosage are: 561.0g of Sinopec Donghai No. 70 Grade A matrix asphalt, 331.7g of waste glass aggregates of 2.36-4.75mm, 263.1g of waste glass aggregates of 1.18-2.36mm, coarse Aggregate 7389.6g, fine aggregate 2882.6g, mineral powder 572.0g; parts by mass are as follows: 4.68 parts of matrix pitch, 2.76 parts of 2.36-4.75mm grade waste glass aggregate, 2.19 parts of 1.18-2.36mm grade waste glass collection material, 61.58 parts of coarse aggregate, 24.02 parts of fine aggregate, and 4.77 parts of mineral powder. The preparation method of the above-mentioned raw materials and mixture is the same as that of Example 1. The pavement performance and thermal conductivity of the asphalt mixture mixed with waste glass aggregate prepared in this way are shown in Table 1 and Table 2.

Embodiment 3

[0035] 12000g of asphalt mixture is used as an example. The raw materials and their dosage are: 561.0g of Sinopec Donghai brand No. 70 A-grade matrix asphalt, 165.9g of waste glass aggregates of 2.36-4.75mm, 131.5g of waste glass aggregates of 1.18-2.36mm, coarse Aggregate 7555.5g, fine aggregate 3014.2g, ore powder 572.0g; parts by mass are as follows: 4.68 parts of base asphalt, 1.38 parts of 2.36-4.75mm grade waste glass aggregate, 1.09 parts of 1.18-2.36mm grade waste glass collection material, 62.96 parts of coarse aggregate, 25.12 parts of fine aggregate, and 4.77 parts of mineral powder. The preparation method of the above-mentioned raw materials and mixture is the same as that of Example 1. The pavement performance and thermal conductivity of the asphalt mixture mixed with waste glass aggregate prepared in this way are shown in Table 1 and Table 2.

[0036]

[0037]

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Abstract

The invention discloses an asphalt mixture doped with waste glass aggregate and a preparation method of the asphalt mixture, and aims to improve the doping amount of the waste glass aggregate to about30% to the maximum extent by taking fixed mineral aggregate gradation and replacing mineral aggregates with corresponding particle sizes with the same mass of the waste glass aggregate. Meanwhile, the problem that the adhesiveness of common asphalt and glass aggregate is insufficient is solved. The obtained mixture not only can keep good pavement performance, but also can reduce the pavement surface temperature in summer. In addition, the use of the mixture can greatly promote the recycling of the waste glass, and accords with the ideas of green energy conservation, environmental protection and sustainable development. The asphalt mixture is prepared from the following components in parts by mass: 4.3 to 5.3 parts of matrix asphalt, 2.5 to 7.5 parts of waste glass aggregate, 60.1 to 63.0parts of coarse aggregate, 22.9 to 25.2 parts of fine aggregate and 4.7 to 4.8 parts of mineral powder.

Description

technical field [0001] The invention belongs to the technical field of road materials, and relates to an asphalt mixture mixed with waste glass aggregates, in particular to an asphalt mixture mixed with waste glass aggregates capable of reducing the surface temperature of asphalt roads and a preparation method thereof. Background technique [0002] The continuous and rapid development of my country's economy, coupled with the country's strong support for infrastructure construction, has made my country's highway construction develop rapidly. Since large-scale construction requires a large amount of natural sand and gravel, this further reduces the already limited natural resources. At the same time, the annual use of glass materials in China is huge, but the recycling rate is low. Under natural conditions, waste glass is difficult to degrade, and burying it requires a large amount of land, and will also have a serious impact on the natural environment. Glass material has t...

Claims

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Application Information

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IPC IPC(8): C04B26/26
CPCC04B26/26C04B2111/0075C04B2201/32C04B2201/50C04B18/0427C04B14/14C04B14/28C04B24/42C04B20/0076
Inventor 袁峻黄俊徐雪松王波许涛
Owner NANJING FORESTRY UNIV
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