Eureka AIR delivers breakthrough ideas for toughest innovation challenges, trusted by R&D personnel around the world.

Preparation method of high-performance asphalt mixture

An asphalt mixture and high-performance technology, applied in the field of high-performance asphalt mixture preparation, can solve the problem that fine aggregates and powders are difficult to distribute evenly, the uniformity of asphalt mixtures is poor, and cementitious materials and fine aggregates cannot be tightly wrapped. cover and other issues

Pending Publication Date: 2021-07-23
ROAD & BRIDGE SOUTH CHINA EINGINEERING CO LTD +1
View PDF3 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The batch asphalt mixer can feed and mix in batches to realize periodic cycle production, but the disadvantages are low efficiency and high fuel consumption; at the same time, the asphalt mixture produced by the batch asphalt mixer has poor uniformity
Due to the viscous nature of asphalt itself, it is difficult for the fine aggregate and powder in the mixture to be completely evenly distributed, let alone achieve microscopic uniformity between materials.
At the same time, when the circular speed of the stirring blade of the static forced mixer is too high, the material will be segregated under the action of centrifugal force, and the improvement of stirring intensity is limited, so that the cementitious material and fine aggregate cannot be firmly coated. On the surface of coarse aggregate, especially for some raw materials with poor adhesion
[0003] In the traditional mixing asphalt mixture, no vibration is added, so that the asphalt cannot enter the micro-pores of the aggregate, causing early rutting deformation of the asphalt pavement, which affects driving safety
In winter, it is prone to cracking and damage, which will affect the service life of the entire pavement
During the service stage of the road surface, the traditional mixing asphalt mixture is prone to water damage, resulting in uneven road surface and unsafe driving
At the same time, with the increase of the service life of the asphalt pavement, the deformation or damage of the pavement will be more serious
Therefore, the asphalt mixture produced by static forced mixing technology cannot meet the needs of social development in terms of high temperature stability, low temperature crack resistance, water damage resistance and durability.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Preparation method of high-performance asphalt mixture
  • Preparation method of high-performance asphalt mixture
  • Preparation method of high-performance asphalt mixture

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] The preparation method of high-performance asphalt mixture is based on the above-mentioned mixing equipment, and the specific operations are as follows:

[0021] (1) Set the heating temperature of the mixing chamber to 180°C;

[0022] (2) Put in the sieved coarse and fine aggregates, and stir for 25 seconds, the stirring speed during the stirring process is 35±0.5r / min, and the vibration frequency is 40±0.5Hz;

[0023] (3) Add asphalt and stir for 25 seconds. During the stirring process, the stirring speed is 35±0.5r / min, and the vibration frequency is 40±0.5Hz;

[0024] (4) Add mineral powder and stir for 25 seconds. During the stirring process, the stirring speed is 35±0.5r / min, and the vibration frequency is 40±0.5Hz;

[0025] (5) Unloading and heat preservation for standby.

[0026] The performance test of the asphalt mixture prepared by the above method is carried out according to the current domestic standard "Test Regulations for Asphalt and Asphalt Mixtures in...

Embodiment 2

[0054] The preparation method of high-performance asphalt mixture is based on the above-mentioned mixing equipment, and the specific operations are as follows:

[0055] (1) Set the heating temperature of the mixing chamber to 180°C;

[0056] (2) Put in the sieved coarse and fine aggregates, and stir for 28 seconds, the stirring speed during the stirring process is 35±0.5r / min, and the vibration frequency is 40±0.5Hz;

[0057] (3) Add asphalt and stir for 28 seconds, the stirring speed during the stirring process is 35±0.5r / min, and the vibration frequency is 40±0.5Hz;

[0058] (4) Add mineral powder and stir for 28 seconds. During the stirring process, the stirring speed is 35±0.5r / min, and the vibration frequency is 40±0.5Hz;

[0059] (5) Unloading and heat preservation for standby.

[0060] The performance test of the asphalt mixture prepared by the above method is carried out according to the current domestic standard "Test Regulations for Asphalt and Asphalt Mixtures in ...

Embodiment 3

[0084] The preparation method of high-performance asphalt mixture is based on the above-mentioned mixing equipment, and the specific operations are as follows:

[0085] (1) Set the heating temperature of the mixing chamber to 180°C;

[0086] (2) Put in the sieved coarse and fine aggregates, and stir for 30 seconds. During the stirring process, the stirring speed is 35±0.5r / min, and the vibration frequency is 40±0.5Hz;

[0087] (3) Add asphalt and stir for 30 seconds. During the stirring process, the stirring speed is 35±0.5r / min, and the vibration frequency is 40±0.5Hz;

[0088] (4) Add mineral powder and stir for 30 seconds. During the stirring process, the stirring speed is 35±0.5r / min, and the vibration frequency is 40±0.5Hz;

[0089] (5) Unloading and heat preservation for standby.

[0090] The performance test of the asphalt mixture prepared by the above method is carried out according to the current domestic standard "Test Regulations for Asphalt and Asphalt Mixtures i...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a preparation method of a high-performance asphalt mixture. The preparation method comprises the following steps: S1, setting the heating temperature of a stirring bin to be 180 DEG C; s2, putting a screened coarse and a fine aggregate in and stirring for 25-30 seconds, wherein the stirring rotating speed in the stirring process is 35 + / -0.5 r / min, and the vibration frequency is 40 + / -0.5 Hz; s3, adding asphalt, stirring for 25-30 seconds, wherein the stirring rotating speed in the stirring process is 35 + / -0.5 r / min, and the vibration frequency is 40 + / -0.5 Hz; s4, adding mineral powder, stirring for 25-30 seconds, wherein the stirring rotating speed in the stirring process is 35 + / -0.5 r / min, and the vibration frequency is 40 + / -0.5 Hz; and S5, discharging and preserving heat for later use. According to the preparation method disclosed by the invention, the asphalt can be fully utilized in the asphalt mixture, the loss of the asphalt mixture is reduced, and meanwhile, the pavement performance of the asphalt mixture can be improved.

Description

technical field [0001] The invention belongs to the technical field of road construction, and in particular relates to a preparation method of high-performance asphalt mixture. Background technique [0002] The mixers used in asphalt pavement projects in my country are mainly batch asphalt mixers. The batch asphalt mixer can feed and mix in batches to realize periodic cycle production. The disadvantages are low efficiency and high fuel consumption. At the same time, the asphalt mixture produced by the batch asphalt mixer has poor uniformity. Due to the viscous nature of asphalt itself, it is difficult for the fine aggregate and powder in the mixture to be completely evenly distributed, let alone achieve microscopic uniformity among materials. At the same time, when the circular speed of the stirring blade of the static forced mixer is too high, the material will be segregated under the action of centrifugal force, and the improvement of stirring intensity is limited, so tha...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): C04B26/26
CPCC04B26/26C04B2111/0075C04B2201/50C04B18/12C04B14/02
Inventor 江微邹海军归立发王成邹凯孟勇军颜添毅雷雨龙零立山李正华梁军林容洪流杨小龙
Owner ROAD & BRIDGE SOUTH CHINA EINGINEERING CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Eureka Blog
Learn More
PatSnap group products