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Production process for rubber powder modified asphalt

A technology of modified asphalt and production technology, which is applied in the direction of building components, building insulation materials, buildings, etc., can solve problems such as difficult compaction, achieve the effects of improving road surface quality, easing environmental process conditions, and reducing production costs

Pending Publication Date: 2018-06-15
QINGHAI HONGCHUAN XINYUAN INDAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Rubber powder makes the cement sticky at high temperature and the thickness of the mixture is thinner, the aggregate in the mixture is thicker, and the direct contact between the stones makes it more difficult to compact

Method used

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  • Production process for rubber powder modified asphalt
  • Production process for rubber powder modified asphalt
  • Production process for rubber powder modified asphalt

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] The rubber powder is used for SBS modified asphalt, specifically comprising the following steps, S1, the asphalt is heated to 160 ° C, dehydrated for use, S2, adding additives, the additives are dithioether alcohol: butyl octyl salt: AEO3: barium sulfate: AEO9 is formulated according to the following weight ratio 30:20:30:10:10, adding SBS modifier, the dosage of the SBS modifier is 5%, adding rubber powder, the rubber powder is selected from a particle size of 80 mesh Desulfurize 60% rubber powder particles, add 0.1% polyether polyol, stir and swell for 120 minutes, S3, pump into the colloid mill for grinding, then pour into the development tank for low-speed stirring at 4000r / min, stir for 20min, add stabilizer. The content of rubber powder mixed into the base asphalt is 15-20%.

Embodiment 2

[0052] The rubber powder is used for SBR modified asphalt, which specifically includes the following steps, S1, the asphalt is heated to 140 ° C, dehydrated for use, S2, adding additives, the additives are dithioether alcohol: butyl octyl salt: AEO3: barium sulfate: AEO9 is formulated according to the following weight ratio 30:20:30:10:10, adding SBS modifier, the dosage of the SBS modifier is 5%, adding rubber powder, the rubber powder is selected from a particle size of 80 mesh Desulfurize 60% rubber powder particles, add 0.1% polyether polyol, stir and swell for 120 minutes, S3, pump into the colloid mill for grinding, then pour into the development tank for low-speed stirring at 4000r / min, stir for 20min, add stabilizer. The content of rubber powder mixed into the base asphalt is 15-20%.

Embodiment 3

[0054] The rubber powder is used for SBS / SBR composite modified asphalt, specifically including the following steps, the asphalt is heated to 150 ° C, dehydrated for use, S2, adding additives, the additives are dithioether alcohol: butyl octyl salt: AEO3: barium sulfate : AEO9 is formulated according to the following weight ratio 30: 20: 30: 10: 10, adding SBS modifier, the dosage of the SBS modifier is 5%, adding the SBR modifier, the SBR modifier The dosage is 5%, and rubber powder is added. The rubber powder is made of rubber powder particles with a particle size of 80 mesh and desulfurization of 60%. Put into the growth tank and stir at low speed, the speed is 4000r / min, stir for 20min, add stabilizer. The content of rubber powder mixed into the base asphalt is 15-20%.

[0055]

[0056] From the comparison table of modified asphalt test data above, we can see that the kinematic viscosity of modified asphalt at 135°C is 9.6. The kinematic viscosity of rubber powder mod...

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Abstract

The invention discloses a production process for rubber powder modified asphalt, and relates to asphalt roads. The invention is to solve the following problems in the prior art: rubber powder enablesa cementing material to be thickened at a high temperature; a mixed material has small thickness; an aggregate material in the mixed material is coarse; a stone material is difficult to be compacted due to direct contact; and constructed pavements easily generate distresses like loosening and potholes. The production process comprises the following steps: step 1, selecting the rubber powder, wherein rubber powder particles with a particle size of 60 to 100 meshes and a desulfurization content of 60% are selected; step 2, selecting a dispersant; step 3, selecting an additive, wherein the additive is prepared from dithioether alcohol, butyl octyl salt, AEO3, barium sulfate and AEO9 according to a weight ratio of 30: 20: 30: 10: 10; and step 4, heating matrix asphalt, adding the rubber powder, a matrix asphalt modifier, the dispersant and the additive, carrying out swelling under stirring for 120 minutes, pumping an obtained material into a colloid mill, carrying out grinding, beating theground material into a reaction tank, carrying out stirring at a low speed, and adding a stabilizer. The process provided by the technical scheme of the invention can maintain a viscosity at a high temperature.

Description

technical field [0001] The invention relates to asphalt roads, in particular to a production process of rubber powder modified asphalt. Background technique [0002] When laying roads, especially on plateaus, high temperature stability, low temperature crack resistance, ductility, viscous toughness, tensile strength and water peeling ability of asphalt are highly required. However, when ordinary asphalt is used for laying roads on plateaus with harsh weather conditions, its performance is far from meeting the requirements. In the hot summer, ordinary asphalt paved roads are often muddy due to the strong ultraviolet radiation on the plateau, and the roads will freeze and crack in the cold winter. Vehicle driving is very unsafe. [0003] Patent document 200710048460.1 discloses the proportioning method and production process of SBR road modified asphalt. The styrene-butadiene rubber (SBR), the copolymer SBR of butadiene and styrene is blended into the asphalt in a certain p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L95/00C08L53/02C08L17/00C08L9/06C08K3/30C08K5/37
CPCC08L95/00C08K2003/3045C08L2205/03C08L2205/035C08L53/02C08L17/00C08K3/30C08K5/37C08L9/06
Inventor 王钢
Owner QINGHAI HONGCHUAN XINYUAN INDAL
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