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Anti-aging SBS modified asphalt

A modified asphalt, anti-aging technology, applied in the direction of building components, building insulation materials, construction, etc., can solve the problems of high production cost, large amount of SBS modifier, etc., to improve the aging point and good penetration , the effect of reducing production costs

Inactive Publication Date: 2018-08-14
江苏中新苏通市政工程有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But, in the technical scheme that this invention discloses, the blending amount of SBS modifier is more, and its production cost is higher

Method used

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  • Anti-aging SBS modified asphalt

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] The invention discloses an anti-aging SBS modified asphalt, which comprises the following components by weight percentage:

[0033]

[0034] Among them, in this embodiment of the present invention, the base asphalt is SK asphalt with a penetration of 70-150 at 25°C and a softening point of 41-47. The reason is that after aging, the residual penetration ratio of SK asphalt is the largest, The residual ductility is the largest and the softening point rise rate is moderate, so its own aging resistance point is higher than that of Esso asphalt and Panjin asphalt;

[0035] In addition, the greater the molecular weight of SBS, the greater the viscosity of the solution and the higher the bonding strength. At the same time, as the ratio of styrene to butadiene increases, the viscosity of the polymer solution decreases, and the tensile strength and hardness increase. Therefore, in this embodiment of the present invention, the SBS admixture adopts a star structure SBS with a m...

Embodiment 2

[0041] The invention discloses an anti-aging SBS modified asphalt, which comprises the following components by weight percentage:

[0042]

[0043] Among them, in this embodiment of the present invention, the base asphalt is SK asphalt with a penetration of 70-150 at 25°C and a softening point of 41-47. The reason is that after aging, the residual penetration ratio of SK asphalt is the largest, The residual ductility is the largest and the softening point rise rate is moderate, so its own aging resistance point is higher than that of Esso asphalt and Panjin asphalt;

[0044] In addition, the greater the molecular weight of SBS, the greater the viscosity of the solution and the higher the bonding strength. At the same time, as the ratio of styrene to butadiene increases, the viscosity of the polymer solution decreases, and the tensile strength and hardness increase. Therefore, in this embodiment of the present invention, the SBS admixture adopts a star structure SBS with a m...

Embodiment 3

[0050] The invention discloses an anti-aging SBS modified asphalt, which comprises the following components by weight percentage:

[0051]

[0052] Among them, in this embodiment of the present invention, the base asphalt is SK asphalt with a penetration of 70-150 at 25°C and a softening point of 41-47. The reason is that after aging, the residual penetration ratio of SK asphalt is the largest, The residual ductility is the largest and the softening point rise rate is moderate, so its own aging resistance point is higher than that of Esso asphalt and Panjin asphalt;

[0053] In addition, the greater the molecular weight of SBS, the greater the viscosity of the solution and the higher the bonding strength. At the same time, as the ratio of styrene to butadiene increases, the viscosity of the polymer solution decreases, and the tensile strength and hardness increase. Therefore, in this embodiment of the present invention, the SBS admixture adopts a star structure SBS with a m...

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Abstract

The invention discloses anti-aging SBS modified asphalt, which is prepared from the following ingredients in percentage by weight: 86.59 to 87 percent of substrate asphalt, 2 to 3 percent of SBS additives, 2 to 6 percent of rubber powder, 1 to 3 percent of rubber oil, 0.5 to 1.5 percent of PE and 0.01 to 0.04 percent of sulfur type pure materials. The anti-aging SBS modified asphalt disclosed by the invention has the advantages that the anti-aging point is high; relatively good ductility and viscosity are realized; the quantity of the mixed SBS additives is low; the production cost is reduced.

Description

technical field [0001] The invention relates to the technical field of pavement overlay materials, in particular to an aging-resistant SBS modified asphalt. Background technique [0002] Asphalt is a kind of viscoelastic material, which is widely used in the paving of road surfaces. It has many advantages such as comfortable driving, easy repair, and long service life. However, ordinary asphalt pavement has a low aging point, and it is prone to flow deformation at high temperature, resulting in rutting on the pavement; and cracks are prone to occur at low temperature. [0003] In order to solve the above problems, the Chinese invention patent with the authorized notification number CN102766338B discloses a wide temperature range modified asphalt for roads and a preparation method thereof, which consists of the following components by weight: 80-90 parts of base asphalt, SBS modified 1-6 parts of curing agent, 10-30 parts of activated waste tire rubber powder, 2-6 parts of l...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L95/00C08L53/02C08L21/00C08L91/00C08L33/08C08L23/06C08K13/02C08K3/22C08K5/12
CPCC08L95/00C08K2003/2241C08K2201/011C08K2201/014C08L2201/08C08L2205/035C08L53/02C08L21/00C08L91/00C08L33/08C08L23/06C08K13/02C08K3/22C08K5/12
Inventor 秦可畏冯赢黄庆亮吴晨晨关晓芳
Owner 江苏中新苏通市政工程有限公司
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