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Modified asphalt regeneration agent as well as preparation method and application thereof

A technology of modified asphalt and rejuvenating agent, applied in building components, building insulation materials, construction and other directions, can solve the problems of less involvement and great construction difficulty, and achieve obvious regeneration effect, low preparation equipment requirements, and long-lasting effect. Effect

Inactive Publication Date: 2011-11-30
HAINAN EXPRESSWAY CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, in the prior art, there are many studies on ordinary asphalt regeneration technology, but less on modified asphalt regeneration technology
The on-site thermal regeneration procedures of modified asphalt concrete pavement and ordinary asphalt concrete pavement are basically the same, but because the construction temperature required by modified asphalt is higher, and the construction temperature that can be achieved by the on-site thermal regeneration unit is relatively low, so the modified asphalt concrete pavement On-site thermal regeneration is more difficult than ordinary asphalt concrete pavement on-site thermal regeneration, which also puts forward higher requirements for the regenerant of modified asphalt

Method used

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  • Modified asphalt regeneration agent as well as preparation method and application thereof
  • Modified asphalt regeneration agent as well as preparation method and application thereof
  • Modified asphalt regeneration agent as well as preparation method and application thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0023] A modified asphalt rejuvenator of this embodiment, the modified asphalt rejuvenator is mainly prepared by heating, mixing and stirring the following components in parts by mass:

[0024] Esso 70# new asphalt 20 copies

[0025] Regenerated oil 75 parts

[0026] 4 parts dibutyl phthalate and

[0027] 1 part of high temperature stabilizer.

[0028] The regenerated oil in this example is a vacuum oil with high aromatic content (52.85%) and high flash point (above 220°C), which is obtained after fractional distillation of crude oil through a decompression device; the above-mentioned high-temperature stabilizer is Sasobit (sasobit). Sasobit is a new type of polyolefin high temperature stabilizer, its chemical composition is synthetic long-chain saturated hydrocarbons, and its dropping melting point is 115°C.

[0029] The preparation method of the modified asphalt rejuvenator of the above-mentioned embodiment includes the following steps: first, heat 20 parts of Esso 70# n...

Embodiment 2

[0031]A modified asphalt rejuvenator of this embodiment, the modified asphalt rejuvenator is mainly prepared by heating, mixing and stirring the following components in parts by mass:

[0032] Esso 70# new asphalt 15 copies

[0033] Regenerated oil 80 parts

[0034] 3 parts dibutyl phthalate and

[0035] High temperature stabilizer 2 parts.

[0036] The regenerated oil in this example is a vacuum oil with high aromatic content (52.85%) and high flash point (above 220°C), which is obtained after fractional distillation of crude oil through a decompression device; the above-mentioned high-temperature stabilizer is Sasobit .

[0037] The preparation method of the modified asphalt rejuvenator of the above-mentioned embodiment includes the following steps: first, heat 15 parts of Esso 70# new asphalt at 115°C for 3 hours, and stir evenly; then, mix 80 parts of regenerated oil , 3 parts of dibutyl phthalate and 2 parts of high-temperature stabilizer were heated at 115°C for 2 ho...

Embodiment 3

[0039] A modified asphalt rejuvenator of this embodiment, the modified asphalt rejuvenator is mainly prepared by heating, mixing and stirring the following components in parts by mass:

[0040] Esso 70# new asphalt 15 copies

[0041] Regenerated oil 80 parts

[0042] 3 parts dibutyl phthalate and

[0043] High temperature stabilizer 2 parts.

[0044] The regenerated oil in this example is a vacuum oil with high aromatic content (52.85%) and high flash point (above 220°C), which is obtained after fractional distillation of crude oil through a decompression device; the above-mentioned high-temperature stabilizer is Sasobit .

[0045] The preparation method of the modified asphalt rejuvenator of the above-mentioned embodiment includes the following steps: first, heat 15 parts of Esso 70# new asphalt at 135°C for 2 hours, and stir evenly; then, mix 80 parts of regenerated oil , 3 parts of dibutyl phthalate and 2 parts of high-temperature stabilizer were heated at 135°C for 1 h...

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Abstract

The invention belongs to the field of composites containing an asphalt material as well as a preparation method and application thereof, and in particular discloses a modified asphalt regeneration agent as well as a preparation method and application thereof. The modified asphalt regeneration agent is mainly prepared by heating, mixing and stirring 15-22 parts of matrix asphalts, 70-80 parts of regenerated oil, 3-5 parts of plasticizer and 0-2 parts of high-temperature stabilizing agent. The concrete preparation method comprises the following steps of: firstly heating the matrix asphalts at 115-135 DEG C; heating and evenly stirring the regenerated oil, the plasticizer and the high-temperature stabilizing agent at 115-135 DEG C and evenly stirring to obtain a mixture; an finally stirring the matrix asphalts and the mixture at 115-135 DEG C and cooling to obtain the modified asphalt regeneration agent. When the modified asphalt regeneration agent is used, aging modified asphalts are firstly taken to heat at 130-145 DEG C, and then the modified asphalt regeneration agent is added into the aging modified asphalts with the addition quantity of over 20 percent of the use level of the aging modified asphalts, and the mixture is stirred at 120-130 DEG C to obtain regenerated asphalts. The invention has the advantages of low cost, favorable regeneration effect and the like.

Description

technical field [0001] The invention relates to a polymer compound composition and its preparation method and application, in particular to a bituminous material composition and its preparation method and application. Background technique [0002] With the development of our country's economy and society, our country's highway transportation has also developed rapidly. By the end of 2009, the total mileage of national roads opened to traffic reached 3,828,200 kilometers; among them, 75,000 kilometers were highways. With the continuous increase of road mileage, road grades are also continuously improved, a large number of low-grade roads have been rebuilt and expanded, and road traffic is playing an increasingly important role in national economic life. [0003] The vast majority of high-grade highways in my country's highways are asphalt pavements. During the course of use, the asphalt pavement will gradually harden and age under the action of traffic load and natural fact...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L95/00C08K5/12C08K5/01
Inventor 姜守东周志刚周国麟陈长征杨体文包双雁苏举李炎炎刘振兴高及阳谭宏伟符碧惠
Owner HAINAN EXPRESSWAY CO LTD
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