CN105462271A - Cold resistant asphalt - Google Patents
Cold resistant asphalt Download PDFInfo
- Publication number
- CN105462271A CN105462271A CN201410425258.6A CN201410425258A CN105462271A CN 105462271 A CN105462271 A CN 105462271A CN 201410425258 A CN201410425258 A CN 201410425258A CN 105462271 A CN105462271 A CN 105462271A
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- China
- Prior art keywords
- pitch
- cold
- silicon carbide
- rubber powder
- asphalt
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Abstract
The invention discloses a cold resistant asphalt, which comprises the following components: petroleum asphalt, a cationic surfactant, ethylene glycol, nano-silicon carbide, waste tire rubber powder, talc powder and cellulose. The cold resistant asphalt provided by the invention can effectively improve the strength performance of asphalt, is suitable for paving northern roads, has long service life and reduces the subsequent maintenance cost.
Description
Technical field
The present invention relates to a kind of pitch, particularly a kind of cold-resistant pitch.
Background technology
Bituminous pavement is generally made up of with gathering materials pitch.Pitch is widely used in pavement construction due to cheap.But the oxidation of bituminous cement during using, the use on weather condition and road surface, particularly use through heavy load, result in road surface and degenerate along with the change of time.Such as, repeatedly shrink due to temperature variation on the winter nights road surface of cold and cause road surface to form vertical crackle, be called as cold crack.Bituminous cement becomes too soft during the summer of sweltering heat, causes road surface tension set under heavy loading repeatedly, becomes " rut ".In addition, the result of continuous print mechanical stress is that road surface becomes tired, causes forming the crackle as crocodile skin, is known as repeated stress failure.The wax content of pitch is higher, causes the road surface of asphalt paving easily to soften when high temperature, and produce pile-up, permeable, phenomenon such as formation reflection crack, surface deformation etc., havoc road surface, therefore has to drop into a large amount of maintenance of surface expenses.
The method of polymer-modified asphalt and production polymer-modified asphalt is known in the art.Polymer, such as thermoplastic elastomer, combine very extensive, for improving intensity and the performance of pitch in pitch.In polymer bituminous composition, add the stability that sulphur can improve it is also known.China is geographical vast, and southern and northern temperature contrast is very large, and the minimum temperature in the Northeast of China winter can reach subzero less than 30 DEG C, and the cold resistance how promoting pitch can be the important topic of puzzlement insider always.
Summary of the invention
The object of the present invention is to provide a kind of cold-resistant pitch.
For realizing above object, the present invention is achieved through the following technical solutions:
A kind of formula of cold-resistant pitch comprises by total weight percent:
Petroleum pitch 60-75%
Cats product 0.5-3%
Ethylene glycol 5-10%
Nanometer silicon carbide 3-7%
Waste tire rubber powder 10-20%
Talcum powder 1-3%
Mierocrystalline cellulose 0.2-0.5%
Cold-resistant pitch preparation of the present invention is through as follows:
Petroleum pitch is added in stirred pot, waste tire rubber powder is added at 220 DEG C, fully be uniformly mixed, leave standstill, cats product, nanometer silicon carbide, talcum powder is added when temperature reduces to 140 DEG C, ethylene glycol, Mierocrystalline cellulose continue stirring 1 hour, are warmed up to 220 DEG C and continue stirring 1 hour.
Usefulness in the present invention is: add conventional propylene glycol, plays low temperature resistant effect, adds Mierocrystalline cellulose, nanometer silicon carbide simultaneously, due to the superpower chemical bond of nanometer silicon carbide, can strengthen the anti-low temperature intensity of pitch.
embodiment:
The embodiment below enumerated is specifically described the present invention, but the present invention is not limited in these examples.Percentage ratio in following examples is all weight percentage.
Embodiment 1, a kind of cold-resistant pitch, is comprised by total weight percent by following component:
Petroleum pitch 68%
Cats product 2%
Ethylene glycol 5%
Nanometer silicon carbide 7%
Waste tire rubber powder 15.5%
Talcum powder 2%
Mierocrystalline cellulose 0.5%
Preparation process is as follows: added by petroleum pitch in stirred pot, adds tyre rubber powder, be fully uniformly mixed at 220 DEG C, leaves standstill, adds surplus stock when temperature will be 140 DEG C, continues stirring 1 hour, is warmed up to 220 DEG C and continues stirring 1 hour.
Embodiment 2, a kind of cold-resistant pitch, is comprised by total weight percent by following component:
Petroleum pitch 75%
Cats product 0.5%
Ethylene glycol 8.2%
Nanometer silicon carbide 3%
Waste tire rubber powder 10%
Talcum powder 3%
Mierocrystalline cellulose 0.3%
Preparation method is identical with embodiment 1
Embodiment 3, a kind of cold-resistant pitch, is comprised by total weight percent by following component:
Petroleum pitch 60%
Cats product 3%
Ethylene glycol 10%
Nanometer silicon carbide 5.8%
Waste tire rubber powder 20%
Talcum powder 1%
Mierocrystalline cellulose 0.2%
Preparation method is identical with embodiment 1
The above; be only the present invention's preferably embodiment; but protection scope of the present invention is not limited thereto; anyly be familiar with those skilled in the art in the technical scope that the present invention discloses; be equal to according to technical scheme of the present invention and inventive concept thereof and replace or change, all should be encompassed within protection scope of the present invention.
Claims (3)
1. a cold-resistant pitch, is characterized in that, by weight percentage, comprises following main component:
Petroleum pitch 60-75%
Cats product 0.5-3%
Ethylene glycol 5-10%
Nanometer silicon carbide 3-7%
Waste tire rubber powder 10-20%
Talcum powder 1-3%
Mierocrystalline cellulose 0.2-0.5%.
2. the preparation method of a cold-resistant pitch, it is characterized in that, comprise following steps: added by petroleum pitch in stirred pot, tyre rubber powder is added at 220 DEG C, fully be uniformly mixed, leave standstill, add other raw materials when temperature reduces to 140 DEG C, continue stirring 1 hour, be warmed up to 220 DEG C and continue stirring 1 hour.
3. cold-resistant pitch as claimed in claim 1, is characterized in that, by weight percentage, comprise following main component:
Petroleum pitch 68%
Cats product 2%
Ethylene glycol 5%
Nanometer silicon carbide 7%
Waste tire rubber powder 15.5%
Talcum powder 2%
Mierocrystalline cellulose 0.5%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410425258.6A CN105462271A (en) | 2014-08-27 | 2014-08-27 | Cold resistant asphalt |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410425258.6A CN105462271A (en) | 2014-08-27 | 2014-08-27 | Cold resistant asphalt |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105462271A true CN105462271A (en) | 2016-04-06 |
Family
ID=55600454
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410425258.6A Pending CN105462271A (en) | 2014-08-27 | 2014-08-27 | Cold resistant asphalt |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105462271A (en) |
-
2014
- 2014-08-27 CN CN201410425258.6A patent/CN105462271A/en active Pending
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20160406 |