Concentrated composition of waste rubber composite modified pitch and preparation and use method

A technology for compounding modified asphalt and waste rubber, which is used in building structures, building components, building insulation materials, etc., can solve the problem that mixing equipment and shearing equipment cannot meet product production, and are not suitable for long-term storage and long-distance transportation and storage. problems such as poor stability and transportation stability, to achieve the effect of increasing high temperature rutting resistance, improving driving comfort and safety, and good stability

Inactive Publication Date: 2010-06-02
CHANGAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] 1. Poor storage and transportation stability
During the storage and transportation of waste rubber composite modified asphalt, waste rubber powder, additives and base asphalt are prone to segregation, delamination and partial agglomeration, which makes the dispersion of waste rubber powder and additives in base asphalt uneven, affecting the performance of modified asphalt. application performance
[0007] 2. High energy consumption
During the storage and transportation of waste rubber composite modified asphalt, it needs to be carried out at a relatively high temperature. In some cases, it needs to be mechanically stirred, and the energy consumption is relatively high.
[0008] 3. The initial investment is large, which is not conducive to promotion
Waste rubber composite modified asphalt production line has a high investment. Due to poor storage and transportation stability, it is not suitable for long-term storage and long-distance transportation. When the production site is relatively dense, the production cost of the product is increased.
[0009] Fourth, product quality control is difficult
There are many fact

Method used

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  • Concentrated composition of waste rubber composite modified pitch and preparation and use method
  • Concentrated composition of waste rubber composite modified pitch and preparation and use method

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0041] Example 1:

[0042] According to parts by weight, take 40 parts of 80 mesh waste tire rubber powder, 40 parts of Korea SK petroleum asphalt with a label of 90, 5 parts of rock asphalt, 5 parts of SBR, and a density of 0.92g / cm 3 5 parts of PE, 5 parts of aromatic oil, 4 parts of sulfur powder.

[0043] After heating the above petroleum pitch to 150°C, add it to the mixing kettle, add waste tire rubber powder and aromatic oil to the mixing kettle to mix into a uniform mixture, and then pass the mixture into the shearing machine, after shearing , Into the swelling tank, swelling development for 40 minutes; the swelled mixture, rock asphalt, SBR, density is 0.92g / cm 3 The low-density PE and sulfur are added to the mixing equipment to prepare a concentrated composition of waste rubber composite modified asphalt.

[0044] The base asphalt is heated to 145°C, the prepared waste rubber composite modified asphalt is added to the mixer at a weight ratio of 1:2.5, and the waste rubber c...

Example Embodiment

[0045] Example 2

[0046] According to parts by weight, take 50 parts of 20 mesh waste tire rubber powder, 50 parts of blue petroleum asphalt with label number 110, 10 parts of lake asphalt, 10 parts of CR, 10 parts of waste polyethylene, 10 parts of aromatic oil, 8 parts of carbon black .

[0047] After heating the above road petroleum asphalt to 160℃, add it to the mixing kettle, add waste tire rubber powder and aromatic oil into the mixing kettle, mix into a uniform mixture, and then pass the mixture into the shearing machine, after cutting Cut, enter the swelling tank, and swell for 60 minutes; add the swelled mixture, lake asphalt, CR, waste polyethylene, and carbon black powder into the mixer to prepare a concentrated composition of waste rubber composite modified asphalt.

[0048] Heat the base asphalt to 160°C, add the prepared waste rubber compound modified asphalt concentrated composition to the base asphalt in a weight ratio of 1:4, add it to the mixer and mix evenly to p...

Example Embodiment

[0049] Example 3

[0050] According to parts by weight, take 30 parts of 100 mesh waste tire rubber powder, 30 parts of Karamay petroleum asphalt with 50 mark, 1 part of rock asphalt, 1 part of SBR, 1 part of polyolefin wax, 1 part of furfural extraction oil, 1 part of sulfur powder .

[0051] After heating the above road petroleum asphalt to 120℃, add it to the mixing kettle, add waste tire rubber powder and furfural extraction oil to the mixing kettle, mix into a uniform mixture, and then pass the mixture into the shearing machine. Shear, enter the swelling tank, and swell for 20 minutes; add the swelled mixture, rock asphalt, SBR, polyolefin wax, and sulfur powder into the mixer to prepare a concentrated composition of waste rubber composite modified asphalt.

[0052] The base asphalt is heated to 130°C, and the concentrated composition of the prepared waste rubber composite modified asphalt and the base asphalt are added to the modified asphalt production equipment at a weight r...

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Abstract

The invention belongs to the technical field of road engineering materials, in particular to a concentrated composition of waste rubber composite modified pitch and a preparation and use method. The concentrated composition is prepared from waste tire rubber powder, petroleum pitch, natural pitch, synthetic tuber, polyolefin, a swelling agent and an aid by preparing procedures. When in use, a product can be proportionally mixed with substrate pitch on a construction site to prepare waste rubber composite modified pitch for spraying construction or be mixed and stirred with the substrate pitch at a pitch mixture stirring station into a rubber pitch mixture for paving construction.

Description

technical field [0001] The invention belongs to the technical field of road engineering materials, and in particular relates to a concentrated composition of waste rubber composite modified asphalt and a preparation and use method. Background technique [0002] Waste rubber composite modified asphalt is prepared by mixing appropriate amount of waste rubber powder and additives into matrix asphalt, and then going through stirring, homogenizing, shearing, grinding, swelling, development and other processes at an appropriate temperature and time. Multiphase dispersion system of rubber asphalt. Waste rubber powder can be divided into waste tire rubber powder, waste shoe rubber powder and leftover rubber powder according to different sources. [0003] With the rapid development of the automobile industry, the accumulation of waste tires is increasing, and has developed into "black solid waste" that endangers the environment. Waste tires contain a large amount of polymer rubber ...

Claims

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Application Information

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IPC IPC(8): C08L95/00C08L21/00C08L9/06C08L11/00C08L23/06
Inventor 徐培华徐玮商博明蔡乾东贾晓放
Owner CHANGAN UNIV
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