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Pavement asphalt mixture preparation method and device

A technology of asphalt mixture and preparation device, applied in the field of pavement asphalt preparation, can solve problems such as affecting the performance of asphalt pavement, segregation, mixture gradation distortion, etc.

Active Publication Date: 2020-09-18
段真巍
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When preparing asphalt mixture, there is a problem of segregation of the mixture, which distorts the gradation of the mixture, thus affecting the performance of the asphalt pavement after laying

Method used

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  • Pavement asphalt mixture preparation method and device
  • Pavement asphalt mixture preparation method and device
  • Pavement asphalt mixture preparation method and device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] A method for preparing asphalt mixture for pavement, comprising the following steps:

[0025] 1) Sieve the aggregate to obtain coarse material, medium material and fine material. The particle size of the coarse material is not less than 10mm, the particle size of the fine material is not greater than 1mm, and the particle size of the medium material is between 10mm and 1mm; the aggregate is sieved before It can be preheated, and the preheating temperature is not higher than 150 degrees. The aggregates referred to can be aggregates that have been proportioned according to gradation, or aggregates that have not been proportioned. Coarse, medium and fine materials can be screened and proportioned according to the gradation after screening. mix.

[0026] 2) Dry the asphalt, melt part of it to obtain liquid asphalt, and pulverize the remaining asphalt to obtain powdered asphalt;

[0027] 3) After the coarse material is preheated, liquid pitch is added for stirring, and the...

Embodiment 2

[0033] A pavement asphalt mixture preparation device, its structure is as follows Figure 1-4 As shown, it includes drying cylinder 1, screening machine 2, coarse material bin 3, medium material bin 4, fine material bin 5, ore powder bin 6, liquid asphalt storage tank 7, asphalt powder bin 8 and stirring pot 9, stirring pot 9 There is a main pot body 901, a wet mixing pot body 902 and a dry mixing pot body 903, and the outlets of the wet mixing pot body 902 and the dry mixing pot body 903 are connected to the main pot body; the outlet of the drying cylinder 1 is connected to The screening machine has 2 feed ports, the screening machine is equipped with a coarse material outlet, a medium material outlet and a fine material outlet, the coarse material outlet is connected to the coarse material bin 3, the middle material outlet is connected to the middle material bin 4, and the fine material outlet is connected to the fine material The outlets of bin 5, coarse material bin 3, fin...

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Abstract

The present invention relates to a pavement asphalt mixture preparation method, which comprises: 1) screening aggregates to obtain a coarse material, an intermediate material and a fine material, wherein the particle size of the coarse material is not less than 10 mm, the particle size of the fine material is not more than 1 mm, and the particle size of the intermediate material is between 10 mm and 1 mm; 2) drying the asphalt, partially melting to obtain liquid asphalt, and powdering the residual asphalt to obtain powdery asphalt; 3) preheating the coarse material, adding liquid asphalt, stirring the components, adding the fine material, and stirring the components to obtain a coarse prefabricated material; 4) mixing and stirring the powdery asphalt and mineral powder to obtain an asphaltand mineral powder mixture, and 5) mixing the coarse prefabricated material, the intermediate material and the asphalt and mineral powder mixture, uniformly stirring the components, and heating and stirring the mixture. The invention aims to solve the problem of separation during preparation of the asphalt mixture.

Description

technical field [0001] The invention relates to a method and a device for preparing pavement asphalt mixture, belonging to the technical field of pavement asphalt preparation. Background technique [0002] Asphalt pavement is a very widely used pavement structure, which is used in urban roads, highways, and high-grade roads. The asphalt mixture used for laying asphalt pavement is obtained by heating and mixing crushed stone aggregates, mineral powder and road asphalt materials with a certain gradation composition. When preparing asphalt mixture, there is a problem of segregation of the mixture, which distorts the gradation of the mixture, thereby affecting the performance of the paved asphalt pavement. Contents of the invention [0003] In view of the problems referred to above, the invention provides a kind of pavement asphalt mixture preparation method and device, and concrete scheme is: [0004] A method for preparing asphalt mixture for pavement, comprising the follo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E01C19/02E01C19/05E01C19/10
CPCE01C19/02E01C19/05E01C19/1013
Inventor 段真巍王爱平张丽丽
Owner 段真巍
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