Abandoned thermosetting plastic modified asphalt and modified asphalt mixture

A modified asphalt and thermosetting technology, which is applied in building insulation materials, building components, buildings, etc., can solve the problems that waste thermosetting plastics are difficult to recycle and reuse, so as to reduce pollution and land occupation, increase strength and increase specific surface area Effect

Inactive Publication Date: 2015-04-08
SHANGHAI PUDONG ROAD & BRIDGE CONSTR +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a kind of waste thermosetting plastic modified asphalt and asphalt mixture, aiming to solve the technical problem that waste thermosetting plastic is difficult to recycle and reuse

Method used

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  • Abandoned thermosetting plastic modified asphalt and modified asphalt mixture
  • Abandoned thermosetting plastic modified asphalt and modified asphalt mixture
  • Abandoned thermosetting plastic modified asphalt and modified asphalt mixture

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Experimental program
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Effect test

Embodiment 1

[0029] The low-temperature crushing combined with grinding technology is used to process waste phenolic plastics into modifiers with a particle size of ≤0.10mm. According to the requirements of the specification, a domestic 70# ordinary asphalt was heated to 160 °C, and then the waste phenolic plastic modifier was mixed with a proportion of 15% of the asphalt mass, and kept stirring for 45 minutes to prepare the modified 70# ordinary asphalt. Then prepare test samples to test the performance of 70# ordinary asphalt and modified 70# ordinary asphalt. See Table 1 for the test results of softening point, penetration and ductility of 70# ordinary asphalt and modified 70# ordinary asphalt.

[0030] Table 170# ordinary asphalt and modified 70# ordinary asphalt main performance indicators

[0031]

[0032] According to Table 1, it can be seen that the high temperature performance of asphalt has been improved to a certain extent after the waste phenolic plastic modified asphalt, b...

Embodiment 2

[0034] The same 70# ordinary asphalt as in Example 1 was used to prepare ordinary asphalt mixture, and the performance indicators such as rutting resistance, water damage resistance and low temperature crack resistance of waste thermosetting plastic modified asphalt mixture and ordinary asphalt mixture were compared and investigated.

[0035] (1) Preparation of waste thermosetting plastic modifiers Process waste amino plastics into modifiers with a particle size of ≤0.15 mm by using low-temperature crushing combined with grinding technology.

[0036] (2) Design mix ratio

[0037] The AC-13C gradation is used to illustrate the performance effect of waste aminoplastic modified asphalt mixture and ordinary asphalt mixture, and the designed mix ratio is shown in Table 2. Among them, aggregates ≤ 0.15mm in the synthetic grading aggregate of waste aminoplast modified asphalt mixture will be partially replaced by 1.2% waste aminoplast modifier.

[0038] Table 2 synthetic gradation ...

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Abstract

The invention discloses an abandoned thermosetting plastic modified asphalt and a modified asphalt mixture. The modified asphalt mixture is prepared by adding abandoned thermosetting plastic to asphalt; the particle sizes of the abandoned thermosetting plastic are smaller than or equal to 0.15mm; the abandoned thermosetting plastic is one or more of abandoned phenolic plastic, amino plastic, urea formaldehyde, melamine, epoxy resin, furan resin, unsaturated polyester resin and silicon resin. By adopting the characteristics that the abandoned thermosetting plastic has certain compatibility with the asphalt, the abandoned thermosetting plastic is processed into granules of which the sizes are close to the particle sizes of mineral powder and fine aggregates, so that partial mineral powder, fine aggregates and asphalt can be replaced with the abandoned thermosetting plastic; the wastes are fully reutilized; the environment pollution is reduced; the resources and the costs are reduced; the properties such as high temperature and strength of the asphalt and the asphalt mixture are improved.

Description

technical field [0001] The invention belongs to the technical field of road engineering and environmental protection, and in particular relates to a waste thermosetting plastic modified asphalt and a modified asphalt mixture. Background technique [0002] As a high-strength, high-temperature-resistant, and insoluble material, thermosetting plastics have been used in various fields of society. However, under existing technical conditions, it is difficult to recycle thermosetting plastics once they are discarded, especially on a large scale. Generally, what we call plastic recycling refers to thermoplastics, and thermosetting plastics form a cross-linked structure after solidification and molding, and cannot be melted and molded again, so recycling is more difficult, and actual recycling applications are seldom. Only polyurethane etc. are recycled commercially on a small scale. The amount of thermosetting plastics accounts for about 15% of all plastics, and the absolute amoun...

Claims

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Application Information

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IPC IPC(8): C08L95/00C08L61/06C08L61/20C04B26/26
Inventor 王晓杰罗芳艳闫国杰李军代刘钢施曙东邓国民马利志邱轶徐韵淳李交王腾飞夏庆宇钱婷袁月李俊姚凯周维维
Owner SHANGHAI PUDONG ROAD & BRIDGE CONSTR
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