SBR modified road bitumen

A technology of modified asphalt and asphalt, which is applied in building components, building insulation materials, buildings, etc., can solve problems such as unsafe driving, and achieve the effects of reduced input, high anti-aging performance, and reduced production costs

Active Publication Date: 2007-08-08
QINGHAI HONGCHUAN XINYUAN INDAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Vehicle driving is very unsafe

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0011] The styrene-butadiene rubber (SBR), the copolymer SBR of butadiene and styrene is blended into the asphalt in a certain proportion, and the SBR is pulverized and mixed with the asphalt by a shear pump or a colloid mill, and the SBR is firstly softened. , add rubber filler oil with a weight ratio of 1 times that of SBR to SBR, heat to 145°C for stirring and mixing, and the mixing time is 40 minutes; the purpose is mainly to make SBR plasticize and lubricate; ②Then soften the SBR is blended into asphalt in a proportion of 3.5% by weight and mixed, sheared with an asphalt shear pump, sheared 4 times, and the mixing temperature is 170°C; Mix 4 times the proportion of SBR weight per thousand sulfur into the asphalt mixture for vulcanization, and the mixing temperature is 165°C. In order to accelerate the vulcanization process, TMTD tetramethyl thiuram disulfide accelerator is added in the vulcanization process, and the amount is 1 times that of sulfur. The role of vulcaniza...

Embodiment 2

[0013] The styrene-butadiene rubber (SBR), the copolymer SBR of butadiene and styrene is blended into the asphalt in a certain proportion, and the SBR is pulverized and mixed with the asphalt by a shear pump or a colloid mill, and the SBR is firstly softened. , add rubber filling oil with a weight ratio of 1.2 times that of SBR to SBR, heat to 150°C for stirring and mixing, and the mixing time is 60 minutes; the purpose is mainly to make SBR plasticize and lubricate; ②Then soften the SBR is blended into asphalt in a proportion of 3.8% by weight, and sheared with an asphalt shear pump, sheared 5 times, and the mixing temperature is 175°C; ③ add sulfur to vulcanize SBR, and the asphalt mixture Mix 7 times of SBR weight per thousand sulfur into the asphalt mixture for vulcanization, and the mixing temperature is 175°C. In order to accelerate the vulcanization process, a TMTD tetramethylthiuram disulfide accelerator is added during the vulcanization process, and the amount added i...

Embodiment 3

[0015] The styrene-butadiene rubber (SBR), the copolymer SBR of butadiene and styrene is blended into the asphalt in a certain proportion, and the SBR is pulverized and mixed with the asphalt by a shear pump or a colloid mill, and the SBR is firstly softened. , add rubber filler oil with a weight ratio of 1.5 times that of SBR to SBR, heat to 155°C for stirring and mixing, and the mixing time is 90 minutes; the purpose is to make SBR plasticize and lubricate; ②Then soften the SBR is blended into asphalt at a ratio of 4% by weight, and sheared with an asphalt shear pump for 6 times, and the mixing temperature is 180°C; ③Sulfur is added to vulcanize the SBR, Mix 10 times the percentage of SBR weight per thousand sulfur into the asphalt mixture for vulcanization, and the mixing temperature is 185°C. In order to accelerate the vulcanization process, TMTD tetramethyl thiuram disulfide accelerator is added in the vulcanization process, and the amount is twice that of sulfur. The ro...

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PUM

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Abstract

The invention discloses a modified road tar under terrible climate, which is characterized by the following: doping SBR, butadiene and phenylethene into tar according to certain proportion; grinding SBR through cutting pump or colloid; blending with tar.

Description

technical field [0001] The invention relates to a kind of asphalt, in particular to a new type of modified road asphalt which is more suitable for the harsh climate conditions of the Qinghai-Tibet Plateau. 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. Contents of the invention [0003] The technical problem to be solved by the present invention is to overcome the deficiencies in the prior art and provide a new type of modified...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L95/00C08K3/06C08L53/02
Inventor 王钢
Owner QINGHAI HONGCHUAN XINYUAN INDAL
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