Asphalt mixture anti-rut agent and preparation method thereof

A technology of asphalt mixture and anti-rutting agent, which is applied in the field of asphalt mixture, can solve the problems of smooth running of vehicles and adverse effects on safety, easy softening of asphalt pavement, and easy rutting marks, etc., so as to improve stiffness, Good compatibility, improve the effect of softening resistance

Inactive Publication Date: 2012-09-12
NINGBO INST OF TECH ZHEJIANG UNIV ZHEJIANG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the existing asphalt pavement, the asphalt pavement is prone to softening in high temperature weather, especially in the hot summer period, and vehicles tend to leave rut marks when passing on it, and there are pits that are sunken in the middle and bulging at the edges.
Thereby seriously destroying the smoothness of the road surface and adversely affecting the smoothness and safety of the vehicle.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] (1) Mix the hot stuffy steel slag and lime according to the weight ratio of 10:1 and heat it to 900-950°C, keep it warm for 3 hours, then quench it (cool it in water), and ball mill it to get a specific surface area of ​​450m 2 / kg of steel slag powder;

[0020] (2) heat the coal gangue incineration ash at 750-900°C for 3 hours;

[0021] (3) 40% of steel slag micropowder prepared by step (1), 20% of slag micropowder and 40% of coal gangue incineration ash after step (2) treatment are mixed evenly, then the mixture is mixed with (modulus 2.4 sodium silicate solution) by weight The ratio is 2.5:1, stirring, mixing and curing, that is, standing at room temperature for 28 days, heating to 800-850°C, keeping warm for 3 hours, and then grinding into a powder with a fineness greater than 150 mesh to obtain the anti-rutting agent.

[0022] Add the anti-rutting agent prepared above into asphalt to test the anti-rutting performance:

[0023] Asphalt: Sinopec No. 70 asphalt uses...

Embodiment 2

[0025] (1) Mix the hot stuffy steel slag and lime according to the weight ratio of 10:1 and heat it to 900-950°C, keep it warm for 3 hours, then quench it, and ball mill it to get a specific surface area of ​​450m 2 / kg of steel slag powder;

[0026] (2) heat the coal gangue incineration ash at 850-900°C for 2.5 hours;

[0027] (3) 35% of steel slag micropowder prepared by step (1), 25% of slag micropowder and 40% of coal gangue incineration ash after the treatment of step (2) are mixed evenly, then the mixture is mixed with (sodium silicate solution of modulus 2.4) with The weight ratio is 2.5:1, stirring, mixing and curing, that is, placing it at room temperature for 28 days, heating to 800-850°C, keeping it warm for 3 hours, and then grinding it into a powder with a fineness greater than 150 mesh to obtain the anti-rutting agent.

[0028] Add the anti-rutting agent prepared above into asphalt to test the anti-rutting performance:

[0029] Asphalt: Sinopec No. 70 asphalt o...

Embodiment 3

[0031] (1) Mix the hot stuffy steel slag and lime according to the weight ratio of 10:1 and heat it to 900-950°C, keep it warm for 3 hours, then quench it, and ball mill it to get a specific surface area of ​​450m 2 / kg of steel slag powder;

[0032] (2) heat the coal gangue incineration ash at 800-850°C for 3 hours;

[0033] (3) 30% of steel slag micropowder prepared by step (1), 25% of slag micropowder and 45% of coal gangue incineration ash after step (2) treatment are mixed evenly, then the mixture is mixed with (modulus 2.4 sodium silicate solution) by weight The ratio is 2.5:1, stirring, mixing and curing, that is, standing at room temperature for 28 days, heating to 800-850°C, keeping warm for 3 hours, and then grinding into a powder with a fineness greater than 150 mesh to obtain the anti-rutting agent.

[0034] Add the anti-rutting agent prepared above into asphalt to test the anti-rutting performance:

[0035] Asphalt: Sinopec No. 70 asphalt uses 5% oil, and the ex...

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Abstract

The invention discloses an asphalt mixture anti-rut agent. The anti-rut agent is characterized in that the anti-rut agent is obtained through mixing 30-50wt% of steel slag micro-powder, 10-25wt% of mineral slag micro-powder, and 25-45wt% of gangue incineration ash, carrying out stirring reacting on the resulting mixture and a sodium silicate solution which are mixed according to a weight ratio of(1.5-3):(1-2), carrying out curing maintenance, heating, carrying out thermal insulation, and grinding, wherein the steel slag micro-powder is obtained through mixing hot closed steel slag with lime,heating to 900-950DEG C, maintaining the temperature for 2.5-3h, quenching and ball-milling; and the gangue incineration ash is obtained after maintaining a temperature of 750-900DEG C for 2.5-3h. The invention also discloses a preparation method of the anti-rut agent. The anti-rut agent of the invention has the advantages of no appearance of rut traces, and full guarantee of the pavement planarization and the driving safety because of difficult softening of the asphalt mixture.

Description

technical field [0001] The invention relates to the technical field of asphalt mixture, in particular to an anti-rutting agent for asphalt mixture and a preparation method thereof. Background technique [0002] With the acceleration of the urbanization process and the supporting construction of road administration facilities, there are more and more pavement structures prepared from asphalt mixture. However, the existing asphalt pavement is prone to softening in high temperature weather, especially in the hot summer period, and vehicles tend to leave rut marks when they pass by, and pits with sags in the middle and bulges at the edges appear. Thereby seriously destroying the smoothness of the road surface, bringing adverse effects to the smooth running and safety of the vehicle. Contents of the invention [0003] The present invention aims at the above-mentioned deficiencies of the prior art, and provides an anti-rutting agent for asphalt mixture which can make the asphal...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B18/30
CPCY02W30/91
Inventor 孙家瑛
Owner NINGBO INST OF TECH ZHEJIANG UNIV ZHEJIANG
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