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Method of modifying asphalt

A technology of modified asphalt and asphalt, which is applied in the direction of building components, building insulation materials, buildings, etc., can solve the problem of low modification and achieve the effects of small surface area, cost saving and size reduction

Inactive Publication Date: 2008-04-16
迪特尔·丹纳特
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Until now, these circumstances have significantly limited this modification to very low levels

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Modified bitumen having the following specifications. Penetration: 98dmm; asphalt softening point (Ring and Ball): 49°C.

[0029] The bitumen was mixed with 15% rubber powder containing 5% aromatic oil at 170°C for 15 minutes under stirring.

[0030] The specifications of the obtained modified asphalt are as follows: penetration: 62dmm; asphalt softening point: 58°C.

Embodiment 2

[0032] Modification Bitumen having the same specifications as the previous example.

[0033] The bitumen was mixed with 15% rubber powder containing 20% ​​aromatic oil at 170°C for 15 minutes under stirring.

[0034] The specifications of the obtained modified asphalt are as follows: penetration: 72dmm; asphalt softening point: 53°C.

Embodiment 3

[0036] Modified bitumen having the following specifications. Penetration: 40dmm; asphalt softening point: 55°C.

[0037] The bitumen was mixed with 15% rubber powder containing 5% aromatic oil at 170°C for 15 minutes under stirring.

[0038] The specifications of the obtained modified asphalt are as follows: penetration: 20dmm; asphalt softening point: 65°C.

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Abstract

A method for modifying bitumen with waste rubber powder, including a first step of mixing rubber powder with an aromatic oil in proportions of 98-60 % and 2-40 % respectively, and a second step of mixing the rubber powder from the first step with bitumen in proportions of 3-30 % and 97-70 % respectively, at a temperature of 140-200 DEG C and for a time of 5-40 minutes. The method is advantageous mainly in that the bitumen can be modified in a shorter time than with known methods, and in that the specifications of the modified bitumen can be controlled in such a way that it becomes commercially useful, thereby contributing to the solution of the environmental problem of too many tyres.

Description

technical field [0001] The present invention relates to a process for the modification of bitumen for the production of bituminous agglomerates and for the production of products used in constructions for waterproofing and joint sealing purposes and the like. [0002] More specifically, the present invention relates to a process for the modification of bitumen, which can be satisfactorily used to prepare bitumen clinkers, with waste rubber product granules or powder, in particular from vehicle tyres, The asphalt clinker is expected to be used in the construction of roads, highways, highways, city roads, etc., and in the manufacture of membranes, sheets, waterproofing, sealants for cracks, cracks and joints, latex, etc. Background of the invention [0003] The incorporation of thermoplastics and elastomers into bitumen according to the so-called "bitumen modification" is generally known to those skilled in the art, and this forms a well-known technique in road construction, w...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L95/00
CPCC08L95/00C08J11/06C08J2395/00Y02W30/62C08L2666/08
Inventor 迪特尔·丹纳特
Owner 迪特尔·丹纳特
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