Modified mineral aggregate for bituminous pavement and method for producing same

A technology for asphalt pavement and surface modification, which is applied in the field of municipal roads and highway engineering to achieve the effects of improving comprehensive performance, improving comprehensive performance, improving cohesion and stability

Inactive Publication Date: 2008-09-10
关长禄
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The invention discloses a modified mineral material for asphalt pavement, which solves the problem of bonding between asphalt and mineral material of different properties, and improves the strength, stability and durability of the asphalt pavement

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0062] The coupling agent is titanate coupling agent: diglycolic acid titanate, JN-115

[0063] ① Aggregate modification: Surface modification is carried out on the aggregate during the asphalt mixture production process, that is, after the aggregate is heated by the heating drum of the mixture mixer, it is put into the mixture mixing tank, and the aggregate is added per 1000kg during normal dry mixing. Add 1.0kg of titanate coupling agent to the aggregate, stir evenly for 10-25s to complete the surface modification of the aggregate, then add modified filler and asphalt and mix normally to produce asphalt mixture;

[0064] ②Filler modification: The filler can be modified during the production process of the filler or before use, using a powder surface modifier to add 5kg of titanate coupling agent per 1000kg of filler to complete the surface modification of the filler.

[0065] ③ Recycled dust modification: For the recycled dust generated during the mixing process of the mixtu...

Embodiment 2

[0073] The coupling agent is aluminate coupling agent: DL-441-A

[0074] ① Aggregate modification: Surface modification is carried out on the aggregate during the asphalt mixture production process, that is, after the aggregate is heated by the heating drum of the mixture mixer, it is put into the mixture mixing tank, and the aggregate is added per 1000kg during normal dry mixing. Add 0.9kg of aluminate coupling agent to the aggregate, stir evenly for 10-25s to complete the surface modification of the aggregate, then add modified filler and asphalt to produce asphalt mixture;

[0075] ②Filler modification: The filler can be modified during the production process of the filler or before use, using a powder surface modifier, adding 4.0kg of aluminate coupling agent per 1000kg of filler to complete the surface modification of the filler .

[0076] ③ Recycled dust modification: For the recycled dust generated during the mixing process of the mixture, use a powder surface modifica...

Embodiment 3

[0084] The coupling agent is a silane coupling agent: aminopropyltriethoxysilane KH-550

[0085] ① Aggregate modification: Surface modification is carried out on the aggregate during the asphalt mixture production process, that is, after the aggregate is heated by the heating drum of the mixture mixer, it is put into the mixture mixing tank, and the aggregate is added per 1000kg during normal dry mixing. Add 0.9kg of silane coupling agent to the aggregate, stir evenly for 10-25s to complete the surface modification of the aggregate, then add modified filler and asphalt to produce asphalt mixture;

[0086] ②Filler modification: The filler can be modified during the production process of the filler or before use, using a powder surface modifier, and adding 4.5kg of silane coupling agent to 1000kg of filler to complete the surface modification of the filler.

[0087] ③ Recycled dust modification: For the recycled dust generated during the mixing process of the mixture, use a powd...

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PUM

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Abstract

The invention discloses a modified ore material and preparing method of asphalt pavement, which is characterized by the following: heating up the ore material in hot cylinder and adding in 0.5-5kg coupler per 1000kg aggregates; putting the above materials in mixture vat to mix for 10-25 minutes; modifying the surface modification. Using coupler to modify the surface modification of main composite materialore material (aggregate, brasque) of asphalt mixture improves the combination property of asphalt mixture. Making the adhesion to change for cementation on the surface between ore material and asphalt improves the binding power and constancy between ore material and asphalt. The invention improves the affinity of ore material and asphalt, which improves the intensity, constancy and durability of asphalt pavement.

Description

technical field [0001] The invention discloses a modified mineral material for asphalt pavement and also provides a production method thereof, belonging to the technical fields of highway engineering and municipal roads. technical background [0002] At present, the construction of high-grade highways and municipal roads in my country is developing rapidly, among which asphalt pavement is the main structural form, and problems such as early damage to varying degrees in the early stage of operation have always plagued road builders and become a technical problem that needs to be solved urgently. For this reason, road workers have conducted a lot of research from different angles, but most of them focus on improving the gradation of asphalt mixture (such as SMA), improving the performance of asphalt (such as modified asphalt) or improving the adhesion between mineral aggregates and asphalt. (Adding anti-stripping agent, adding slaked lime), improving engineering quality contro...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B20/00C04B22/04
Inventor 关长禄陶志政吕得保
Owner 关长禄
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