CN105482470A

CN105482470A - Anti-deformation matrix asphalt and preparation technology

Info

Publication number: CN105482470A
Application number: CN201510986818.XA
Authority: CN
Inventors: 廖鹏程
Original assignee: Individual
Current assignee: Individual
Priority date: 2015-12-26
Filing date: 2015-12-26
Publication date: 2016-04-13

Abstract

The invention relates to anti-deformation matrix asphalt and a preparation technology. The preparation technology comprises the following steps: firstly, pouring matrix asphalt into a heating tank and heating, when emitting of bubbles from the asphalt is stopped, stopping heating, pouring the asphalt into a stirring tank, adding sulphur, starting a stirrer, adding a polypropylene modifier, repeatedly co-grinding and stirring for a few times by using two stirring tanks, pouring the ground asphalt into a storage bucket, and continuously developing for a period of time. A prepared asphalt product has good anti-deformation performance, and a production technology is simple.

Description

A kind of matrix pitch of anti-deformation and preparation technology

Technical field

The present invention relates to a kind of matrix pitch, particularly a kind of matrix pitch and preparation technology thereof adding properties-correcting agent, belongs to pitch manufacture field.

Background technology

The chocolate complex mixture that pitch is made up of hydrocarbon polymer and the nonmetal derivative thereof of different molecular weight is the one of high viscosity organic liquid.Along with the high speed development of highway in China, Chinese Highway total kilometrage occupies the second in the world, and quite a few road surface of China adopts asphalt paving, and road construction facilitates the demand of pitch, and " 12 " period, road bitumen consumption is every year on average at about 1,500 ten thousand tons.Pitch is a lot of as pavior advantage, and one is wheel and road surface two-stage vibration damping, and therefore road-ability is good, noise is little; Two is flexible pavement strong adaptabilities to roadbed, foundation deformation or non-uniform settling; Three is that speed is repaired soon in road surface, can be open to traffic after rolling.But hot area requires high to the high-temperature stability of pitch, and the easy deformation of plain asphalt, cause the destruction to road.

In the face of the requirements at the higher level now to Road construction, use the building method of traditional asphalt will be difficult to meet the demands, must improve the over-all properties of pitch, a feasible method is exactly the characteristic of change traditional asphalt.The present invention is added on the basis of sulphur by matrix pitch, then adds polypropylene modifier, improves the ability of anti-deformation of pitch.

Summary of the invention

The object of this invention is to provide a kind of matrix pitch and preparation technology of anti-deformation, this preparation technology carries out as follows:

(1) first matrix pitch is squeezed in intensification tank from de-bucket device, heat temperature raising;

(2) matrix pitch can continuous bubbling through heating, when see stopping emerge bubble time, stop heating, and pitch poured in a stirred pot;

(3) in stirred pot, add a certain amount of sulfur modifier again;

(4) start agitator, make agitator work, then add appropriate polypropylene modifier, and stirring is carried out swelling;

Swelling fully after, after the pitch in stirred pot is ground by colloidal mill, then squeeze in another stirred pot, all ground shutdown;

(6) again pitch honed in this stirred pot is ground one time by colloidal mill to be driven in last stirred pot, so repeatedly grind several times altogether;

(7) the pitch of milled is poured in storage bucket, continue to grow for some time.

As preferred embodiments of the present invention, step (1) in, Heating temperature is 160-180 DEG C.

As preferred embodiments of the present invention, step (3) in, the addition of sulphur accounts for the 5-10% of matrix pitch weight.

As preferred embodiments of the present invention, step (4) in, mixing control rotating speed is within 400r/min.

As preferred embodiments of the present invention, step (4) in, polypropylene modifier accounts for the 3-4% of matrix pitch weight.

As preferred embodiments of the present invention, step (6) in, repeatedly grind 3-5 all over.

As preferred embodiments of the present invention, step (7) in, the later stage grows needs 1-2 hour.

The present invention has following advantages and characteristic:

(1) this pitch ability of anti-deformation is good;

(2) preparation technology is simple, and cost is low;

(3) flow time is short, easy scale operation.

Embodiment

Embodiment one:

First 10kg matrix pitch is squeezed in asphalt heating tank from de-bucket device, heat temperature raising, asphalt temperature is made to be raised to 160 DEG C, matrix pitch is through the continuous bubbling of heating meeting, when see stopping emerge bubble time, stop heating, and pitch is poured in a stirred pot, the sulphur of 0.5kg is added again in stirred pot, start agitator, make agitator work, mixing control rotating speed is at 300r/min, add the polypropylene modifier of 0.2kg, carry out swelling, swelling fully after the asphalt in stirred pot ground by colloidal mill be driven into for one time in another stirred pot, the complete shutdown of whole mill, again pitch honed in this stirred pot is ground by colloidal mill and be driven into for one time in last stirred pot, so repeatedly grind 3 times altogether, finally the pitch of milled is poured in storage bucket, continue growth 1 hour.

Embodiment two:

First 20kg matrix pitch is squeezed in asphalt heating tank from de-bucket device, heat temperature raising, asphalt temperature is made to be raised to 170 DEG C, matrix pitch is through the continuous bubbling of heating meeting, when see stopping emerge bubble time, stop heating, and pitch is poured in a stirred pot, the sulphur of 1.5kg is added again in stirred pot, start agitator, make agitator work, mixing control rotating speed is at 350r/min, add the polypropylene modifier of 0.6kg, carry out swelling, swelling fully after the asphalt in stirred pot ground by colloidal mill be driven into for one time in another stirred pot, the complete shutdown of whole mill, again pitch honed in this stirred pot is ground by colloidal mill and be driven into for one time in last stirred pot, so repeatedly grind 4 times altogether, finally the pitch of milled is poured in storage bucket, continue growth 1.5 hours.

Embodiment three:

First 50kg matrix pitch is squeezed in asphalt heating tank from de-bucket device, heat temperature raising, asphalt temperature is made to be raised to 180 DEG C, matrix pitch is through the continuous bubbling of heating meeting, when see stopping emerge bubble time, stop heating, and pitch is poured in a stirred pot, the sulphur of 5kg is added again in stirred pot, start agitator, make agitator work, mixing control rotating speed is at 400r/min, add the polypropylene modifier of 2kg, carry out swelling, swelling fully after the asphalt in stirred pot ground by colloidal mill be driven into for one time in another stirred pot, the complete shutdown of whole mill, again pitch honed in this stirred pot is ground by colloidal mill and be driven into for one time in last stirred pot, so repeatedly grind 5 times altogether, finally the pitch of milled is poured in storage bucket, continue growth 2 hours.

Claims

1. a matrix pitch for anti-deformation, is characterized in that, the preparation technology of this pitch carries out as follows:

(3) in stirred pot, add a certain amount of sulfur modifier again;

2. the matrix pitch of a kind of anti-deformation according to claim 1, is characterized in that, step (1) in, Heating temperature is 160-180 DEG C.

3. the matrix pitch of a kind of anti-deformation according to claim 1, is characterized in that, step (3) in, the addition of sulphur accounts for the 5-10% of matrix pitch weight.

4. the matrix pitch of a kind of anti-deformation according to claim 1, is characterized in that, step (4) in, mixing control rotating speed is within 400r/min.

5. the matrix pitch of a kind of anti-deformation according to claim 1, is characterized in that, step (4) in, polypropylene modifier accounts for the 3-4% of matrix pitch weight.

6. the matrix pitch of a kind of anti-deformation according to claim 1, is characterized in that, step (6) in, repeatedly grind 3-5 all over.

7. the matrix pitch of a kind of anti-deformation according to claim 1, is characterized in that, step (7) in, the later stage grows needs 1-2 hour.