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Preparation method for asphalt mixture capable of rapidly warming

A technology of asphalt mixture and mixture, applied in the direction of climate sustainability, sustainable waste treatment, solid waste management, etc., can solve the problems of uneven temperature rise, high deicing efficiency, asphalt aging, etc., and achieve good wave absorption ability, low microwave loss, good dielectric properties and magnetic permeability

Inactive Publication Date: 2015-07-01
SOUTHWEAT UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The asphalt mixture prepared by the invention can be rapidly heated by microwaves, and can be used for highway asphalt pavement, especially for road deicing, highway asphalt pavement maintenance and rapid repair; the deicing efficiency is high, and it can overcome the slow temperature rise in traditional heating methods Uniformity, aging and coking of asphalt, so as to realize rapid maintenance and repair of highway asphalt pavement

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Take the pyrite slag and the reducing agent, the mass ratio is 10:1, in a ball mill, ball mill for 1.5h; the ground raw material and 5% CaF 2 Mix evenly, take 8g of the mixture into a cylindrical mold with a diameter of 25mm, press it to 50MPa at a speed of 200N / S, hold the load for 60s, put the green body in a drying oven at 110°C, dry for 6h, take out the dried The green body is calcined at 1450°C for 3 hours in a reducing atmosphere, and the high-temperature furnace is cooled to room temperature to obtain the prepared absorbing aggregate. When the absorbing aggregate is heated for 5s in a microwave environment with an output power of 800W and a frequency of 2450MHz, the temperature of the aggregate rises by 43℃, while in the same time, the temperature of the limestone aggregate rises by only 3℃.

[0033] Select No. 90 road asphalt, prepare AC-13 asphalt-based composite material according to JTG F40-2004 Highway Asphalt Pavement Construction Technical Specification, repla...

Embodiment 2

[0037] Take the pyrite slag and the reducing agent, the mass ratio is 10:1, in a ball mill, ball mill for 1.5h; the ground raw material and 5% CaF 2 Mix evenly, take 8g of the mixture into a cylindrical mold with a diameter of 25mm, press it to 50MPa at a speed of 200N / S, hold the load for 60s, put the green body in a drying oven at 110°C, dry for 6h, take out the dried The green body is calcined at 1350°C for 3 hours in a reducing atmosphere, and the high-temperature furnace is cooled to room temperature to obtain the prepared absorbing aggregate. When the absorbing aggregate is heated for 5 seconds in a microwave environment with an output power of 800W and a frequency of 2450MHz, the temperature of the aggregate rises by 35℃, while in the same time, the temperature of the limestone aggregate rises by only 3℃.

[0038] Select No. 90 road asphalt, prepare AC-13 asphalt-based composite material according to JTG F40-2004 Highway Asphalt Pavement Construction Technical Specification...

Embodiment 3

[0040] Take the pyrite slag and the reducing agent, the mass ratio is 10:1, in a ball mill, ball mill for 1.5h; the ground raw material and 4% CaF 2 Mix evenly, take 8g of the mixture into a cylindrical mold with a diameter of 25mm, press it to 50MPa at a speed of 200N / S, hold the load for 60s, put the green body in a drying oven at 110°C, dry for 6h, take out the dried The green body is calcined at 1450°C for 3 hours in a reducing atmosphere, and the high-temperature furnace is cooled to room temperature to obtain the prepared absorbing aggregate. When the absorbing aggregate is heated for 5s in a microwave environment with an output power of 800W and a frequency of 2450MHz, the temperature of the aggregate rises by 37℃, while in the same time, the temperature of the limestone aggregate rises by only 3℃.

[0041] Select No. 90 road asphalt, prepare AC-13 asphalt-based composite material according to JTG F40-2004 Highway Asphalt Pavement Construction Technical Specification, repla...

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Abstract

The invention discloses a preparation method for an asphalt mixture capable of rapidly warming. The preparation method is characterized by comprising the following steps: placing pyrite cinder and a reducer in a ball mill and carrying out ball-milling, uniformly mixing the powder after the ball-milling with a mineralizer, then carrying out compression forming, drying, and calcining for 150-200min at 1250-1450 DEG C to prepare a wave-absorbing aggregate; proportioning heavy-duty road asphalt and the aggregate in the mass percentages of 4.6-6% and 94-95.4%, breaking the aggregate and then preheating at 180-200 DEG C, heating the heavy-duty road asphalt at 160-170 DEG C, and stirring and mixing the preheated aggregate with the heated heavy-duty road asphalt at 165-180 DEG C to prepare the asphalt mixture, wherein the aggregate is composed of, 75-100wt% of the wave-absorbing aggregate and 0-25wt% of a natural aggregate. The asphalt mixture prepared by the invention is good in microwave heating effect, and suitable for road de-icing, and road bituminous pavement maintenance and rapid repair.

Description

Technical field [0001] The asphalt-based composite material for highway asphalt pavement of the present invention relates to a method for preparing an asphalt mixture that can quickly heat up. The asphalt mixture (or asphalt-based composite material, asphalt concrete, and wave-absorbing asphalt concrete) prepared by the present invention can be Rapid heating by microwave, used for highway asphalt pavement, especially suitable for road deicing, highway asphalt pavement maintenance and quick repair. Background technique [0002] With the rapid development and improvement of my country's expressway network system, there are great requirements for traffic mileage and road age. Asphalt concrete pavement has many advantages over traditional cement concrete pavement. One of the most obvious advantages is that it is convenient and quick to construct, and when it is being rebuilt, asphalt concrete pavement is faster and simpler than cement concrete pavement. Asphalt concrete pavement is ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B26/26C04B18/04C04B22/08
CPCY02W30/91
Inventor 严云范晓正胡志华李利平
Owner SOUTHWEAT UNIV OF SCI & TECH
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