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Composite TB rubber powder modified asphalt

A technology of modified asphalt and compound modification, which is applied in building components, building insulation materials, buildings, etc., can solve the problems of insufficient high-temperature anti-rutting performance, achieve good low-temperature performance, good high-temperature anti-rutting performance, and solve environmental pollution Effect

Inactive Publication Date: 2020-05-29
成都交通投资集团有限公司
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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 compound TB rubber powder modified asphalt in order to overcome the defect of insufficient high-temperature anti-rutting performance of the common TB rubber powder modified asphalt existing in the above-mentioned prior art

Method used

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  • Composite TB rubber powder modified asphalt
  • Composite TB rubber powder modified asphalt
  • Composite TB rubber powder modified asphalt

Examples

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preparation example Construction

[0074] The preparation method of above-mentioned composite TB rubber powder modified asphalt, this preparation method comprises the following steps:

[0075] (1) Material preparation: prepare materials according to the raw material ratio of TB rubber powder asphalt, waste carbon powder, stabilizer, and amphoteric surfactant;

[0076] (2) Pretreatment: heat the waste toner to 130-150°C, and then ultrasonically strengthen the waste toner for 0.5-1 hour under the condition of ultrasonic power of 1000-3000w;

[0077] (3) Composite modification: add the waste carbon powder after pretreatment to TB rubber powder asphalt in stages, after each addition, stir until there are no obvious particles and then continue to add, repeat until all the carbon powder is added; then in 210 Stir with a mechanical mixer for 2 to 4 hours at ~230°C, and then use a shearer to shear at a speed of 1200±50r / min for 1.5 to 2 hours to obtain composite asphalt;

[0078] (4) Inoculation: Add stabilizers and s...

Embodiment 1

[0081] A preparation method of composite TB rubber powder modified asphalt, the steps are as follows:

[0082] (1) Pretreatment: first heat the waste carbon powder to 130°C, and then use ultrasonic strengthening, the ultrasonic power is 1000w, and the radiation time is 30min;

[0083] (2) Composite modification: add 9 parts of pretreated carbon powder to 80 parts of TB rubber powder modified asphalt, first use a mechanical mixer at 220°C for 2 hours, and then use a shearer to cut at a speed of 1200r / min Cut 1.5h;

[0084] (3) Inoculation: Add 2 parts of stabilizer (a mixture of diallyl isocyanurate and diaminobenzamide, the mass ratio of the two is 1.5) and 3 parts of amphoteric surfactant (4 parts) to the composite asphalt -aminobenzothiophene), at a temperature of 160°C, stir and mix again and incubate for 3 hours, and cool to obtain composite TB rubber powder modified asphalt.

Embodiment 2

[0086] A preparation method of composite TB rubber powder modified asphalt, the steps are as follows:

[0087] (1) Pretreatment: first heat the waste carbon powder to 140°C, and then use ultrasonic strengthening, the ultrasonic power is 2000w, and the radiation time is 40min;

[0088] (2) Composite modification: Add 12 parts of pretreated carbon powder to 85 parts of TB rubber powder modified asphalt, first use a mechanical mixer at 220°C for 3 hours, and then use a shearer to cut at a speed of 1200r / min Cut 1.5h;

[0089] (3) Inoculation: Add 3 parts of stabilizer (a mixture of diallyl isocyanurate and diaminobenzamide, the mass ratio of the two is 1.2) and 4 parts of amphoteric surfactants (4 parts) to the composite asphalt -aminobenzothiophene), at a temperature of 160°C, stir and mix again and incubate for 3 hours, and cool to obtain composite TB rubber powder modified asphalt.

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Abstract

The invention relates to composite TB rubber powder modified asphalt. The composite TB rubber powder modified asphalt comprises the following components in parts by weight: 80-90 parts of TB rubber powder asphalt; 9-15 parts of waste carbon powder; 2-3 parts of a stabilizer; and 3-5 parts of an amphoteric surfactant. The preparation method comprises the following steps: pretreatment: heating the waste carbon powder to 130-150 DEG C, and then carrying out ultrasonic strengthening; composite modification: adding the pretreated waste carbon powder into TB rubber powder asphalt, uniformly stirringunder a heating condition, and then carrying out shearing treatment to obtain composite asphalt; inoculation: adding a stabilizer and a surfactant into the obtained composite asphalt, performing mixed inoculation under heating and stirring conditions, and performing cooling to obtain the composite TB rubber powder modified asphalt. Compared with the prior art, the obtained TB rubber powder modified asphalt has the good low-temperature performance and fatigue performance, the high-temperature stability of the rubber powder modified asphalt is remarkably improved, and the anti-rutting performance of the rubber powder modified asphalt is improved.

Description

technical field [0001] The present invention relates to a composite TB rubber powder modified asphalt, especially the TB rubber powder modified asphalt mixed with waste carbon powder after printing (copy) printing machine, amphoteric surfactant and stabilizer to prepare modified asphalt The method can be used for high-grade asphalt pavement construction and belongs to the field of road engineering. Background technique [0002] TB (Terminal blend) rubber powder modified asphalt is a new type of asphalt, which has been gradually developed in recent years. TB rubber powder modified asphalt uses high temperature to make the rubber powder undergo thorough desulfurization and degradation reactions in the asphalt. The desulfurized and degraded rubber powder is compatible with the asphalt, and then SBS and sulfur are added to it for cross-linking reaction to form a stable Rubber powder modified asphalt. The study found that TB rubber powder modified asphalt has good storage stabi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L95/00C08L21/00C08L53/02C08L33/08C08L25/14C08K13/06C08K9/00C08K3/04C08K3/22C08K5/20C08K5/3492C08K5/45
CPCC08K2003/2275C08K2201/003C08L95/00C08L2201/08C08L2205/035C08L21/00C08L53/02C08L33/08C08K13/06C08K9/00C08K3/04C08K3/22C08K5/20C08K5/34924C08K5/45C08L25/14
Inventor 李旭郭仪南赵宇肖艺成付涛
Owner 成都交通投资集团有限公司
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