High-viscosity high-elasticity pitch and preparation method thereof

A high-elasticity and asphalt technology, which is applied in the field of preparation of high-viscosity and high-elasticity asphalt and high-viscosity high-elasticity asphalt, can solve the problems of poor compatibility between base asphalt and additives, and achieve market competitiveness, easy mixing, and elastic recovery Good results

Active Publication Date: 2014-06-11
CNPC JIANGSU FUEL ASPHALT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the problem of poor compatibility between base asphalt and additives, the inventor has done a lot of analysis and debugging on the properties of various base asphalts, and finally determined to realize the present invention through the following technical solutions:

Method used

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  • High-viscosity high-elasticity pitch and preparation method thereof
  • High-viscosity high-elasticity pitch and preparation method thereof
  • High-viscosity high-elasticity pitch and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] as per figure 1 The technological process for preparing high-viscosity and high-elasticity asphalt:

[0033] 1) select raw materials: select each raw material and its percentage by weight are: 6% compatibilizer, 4% rubber granules, 5% SBS, 2% viscosity regulator, 0.4% stabilizer, and others are matrix asphalt;

[0034] 2) Heat the base asphalt measured in proportion to 185-190°C;

[0035] 3) Add compatibilizer and rubber particles into the above base asphalt in proportion, control the temperature at 185-190°C, stir and circularly shear the above mixture until the rubber particles are fine and uniform;

[0036] 4) Add the SBS modifier to the above mixture in proportion, control the temperature at 185-190°C, stir and shear until there are no obvious particles;

[0037] 5) Add the viscosity regulator to the above mixture in proportion, control the temperature at 185-190°C, stir and shear until there are no obvious particles;

[0038] 6) Divide the appropriate proportion...

Embodiment 2

[0040] Keep the preparation method of embodiment 1 unchanged, wherein choose the raw material of high-viscosity high-elasticity asphalt and its percentage by weight to be: 6% compatibilizer, 5% rubber particles, 7% SBS modifier, 3% viscosity Regulator, 0.3% stabilizer, the others are base asphalt.

Embodiment 3

[0042] Keep the preparation method of embodiment 1 unchanged, wherein choose the raw material of high-viscosity high-elasticity bitumen and its percentage by weight to be: 7% compatibilizer, 4% rubber particle, 6% SBS modifier, 3% viscosity Regulator, 0.3% stabilizer, the others are base asphalt.

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Abstract

The invention discloses high-viscosity high-elastic pitch and a preparation method thereof. The high-viscosity high-elasticity pitch prepared according to the invention has high viscosity and high elasticity as well as excellent workability, and meets the requirements of deformation resistance, fatigue resistance and long service life of large-span bridges, and with the high-viscosity high-elasticity pitch, the problem of poor workability of the existing high-viscosity high-elasticity pitch is solved; the viscosity of the pitch at 60 DEG C is larger than 80000 Pa.s, the viscosity at 135 DEG C is smaller than 3 Pa.s, the softening point reaches up to 85 DEG C above, and the cost is 20% lower than that of the common similar high-viscosity high-elasticity pitch in China at present.

Description

technical field [0001] The invention belongs to the field of road engineering design, and in particular relates to a preparation method of high-viscosity and high-elasticity asphalt and a kind of high-viscosity and high-elasticity asphalt. The high-viscosity and high-elasticity bitumen manufactured by the invention has a viscosity greater than 80,000 Pa.s at 60°C and less than 3 Pa.s at 135°C, and the softening point can reach above 85°C. Background technique [0002] Faced with the current situation that the bridge deck pavement is easily damaged, difficult to re-pave or maintain, and easily causes traffic jams, ordinary modified asphalt and epoxy asphalt can no longer meet the current demand for bridge pavement. High-viscosity and high-elasticity asphalt has significant effects and application benefits in improving the road performance of asphalt mixtures. In the paving process of many successful bridge deck pavements, high-viscosity and high-elasticity asphalt has been wi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L95/00C08L53/02C08L21/00
Inventor 付崇军夏斌
Owner CNPC JIANGSU FUEL ASPHALT
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