CN103865279A - Modified asphalt and preparation method thereof - Google Patents
Modified asphalt and preparation method thereof Download PDFInfo
- Publication number
- CN103865279A CN103865279A CN201210545008.7A CN201210545008A CN103865279A CN 103865279 A CN103865279 A CN 103865279A CN 201210545008 A CN201210545008 A CN 201210545008A CN 103865279 A CN103865279 A CN 103865279A
- Authority
- CN
- China
- Prior art keywords
- asphalt
- mass fraction
- natural rubber
- pitch
- polyoxyethylene glycol
- Prior art date
- 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.)
- Pending
Links
Landscapes
- Compositions Of Macromolecular Compounds (AREA)
- Road Paving Structures (AREA)
Abstract
A modified asphalt disclosed by the invention consists of the following materials by mass percentage: 6%-25% of polyethylene glycol, 2%-8% of activated carbon, 3%-8% of natural rubber and 65%-80% of asphalt; and the total weight of polyethylene glycol, active carbon, natural rubber and asphalt is 100%. The preparation method of the modified asphalt is as follows: preparing polyethylene glycol, active carbon particles and natural rubber particles in the molten state into a mixed material through a mechanical co-blending and mechanical grinding mode; heating the asphalt to a molten state, then adding the mixed material into the molten asphalt to form a mixture; then mixing evenly until no air bubble is in the mixture; pouring the above mixture into a mold and cooling at room temperature to obtain the modified asphalt. The modified asphalt provided by the invention solves the problem that existing asphalt material with the change of temperature turns too soft in heat condition and too brittle in cold condition.
Description
Technical field
The invention belongs to technical field of material, be specifically related to a kind of modifying asphalt, the invention still further relates to the preparation method of above-mentioned modifying asphalt.
Background technology
From the performance of pitch, it is a kind of to the very sensitive material of temperature, along with its state of variation and the performance of temperature all will change.When temperature raises, pitch can deliquescing, thinning, and cohesive force declines, can retrogradation, hardening when temperature declines, become fragile, lose cohesive force.This performance is very disadvantageous to the use of pitch, the area of summer or hot climate, and under heavily loaded effect, bituminous pavement easily forms rut; In the winter time or cold area, bituminous pavement is prone to crack.The appearance of these problems, not only makes the use state on road surface degenerate, and has greatly shortened the work-ing life on road surface.From desirability, modern road traffic, particularly motorway is more and more higher to the requirement of bituminous pavement, and the feature of Modern Traffic is that the volume of traffic is large, weight-carrying capacity is large, road speed is large, so require that road surface supporting capacity is large, good endurance have good surface appearance.The oil of China belongs to paraffinic base mostly, and the pitch general property that processes with its refinement is poor, label is lower, is difficult to meet above-mentioned requirements.
Summary of the invention
The object of the present invention is to provide a kind of modifying asphalt, solved existing bituminous material and caused the larger problem of asphalt performance fluctuation along with varying with temperature easily appears in the variation of temperature.
The present invention also aims to provide the preparation method of above-mentioned modifying asphalt.
The technical solution adopted in the present invention is: a kind of modifying asphalt, it is characterized in that, formed by following material by mass percentage: the polyoxyethylene glycol that mass fraction is 6% ~ 25%, the gac that mass fraction is 2% ~ 8%, the natural rubber that mass fraction is 3% ~ 8%, the pitch that mass fraction is 65% ~ 80%, the quality summation of polyoxyethylene glycol, gac, natural rubber and pitch is 100%.
Another technical scheme of the present invention is that a kind of preparation method of modifying asphalt, comprises the steps:
The first step, getting respectively mass fraction is 6% ~ 25% polyoxyethylene glycol, the gac that mass fraction is 2% ~ 8%, the natural rubber that mass fraction is 3% ~ 8%, the pitch that mass fraction is 65% ~ 80%, and the quality summation of polyoxyethylene glycol, gac, natural rubber and pitch is 100%;
Second step, under molten state, by the mode of mechanical blending and mechanical mill, makes mixing material by polyoxyethylene glycol, activated carbon granule, natural rubber particle;
The 3rd step, by asphalt heating, to molten state, then the mixing material that second step is made adds in the pitch of melting, forms mixture, then stirs, until there is no bubble in mixture;
The 4th step, pours the mixture forming in the 3rd step in mould into, cooling at normal temperatures, makes modifying asphalt.
The invention has the beneficial effects as follows: it is high that modifying asphalt of the present invention has softening temperature, the feature that brittle point is low, and there is higher intensity, thus greatly extend the work-ing life of pitch, obtain good economic and social benefit.
Embodiment
Below in conjunction with embodiment, the present invention is described in detail.
A kind of modifying asphalt of the present invention, formed by following material by mass percentage: the polyoxyethylene glycol that mass fraction is 6% ~ 25%, the gac that mass fraction is 2% ~ 8%, the natural rubber that mass fraction is 3% ~ 8%, the pitch that mass fraction is 65% ~ 80%, the quality summation of polyoxyethylene glycol, gac, natural rubber and pitch is 100%.
The preparation method of modifying asphalt of the present invention, comprises the steps:
The first step, getting respectively mass fraction is 6% ~ 25% polyoxyethylene glycol, the gac that mass fraction is 2% ~ 8%, the natural rubber that mass fraction is 3% ~ 8%, the pitch that mass fraction is 65% ~ 80%, and the quality summation of polyoxyethylene glycol, gac, natural rubber and pitch is 100%;
Second step, under molten state, by the mode of mechanical blending and mechanical mill, makes mixing material by polyoxyethylene glycol, activated carbon granule, natural rubber particle;
The 3rd step, by asphalt heating, to molten state, then the mixing material that second step is made adds in the pitch of melting, forms mixture, then stirs, until there is no bubble in mixture;
The 4th step, pours the mixture forming in the 3rd step in mould into, cooling at normal temperatures, makes modifying asphalt.
Embodiment
Get respectively mass fraction and be the pitch that 20% polyoxyethylene glycol, gac that mass fraction is 6%, natural rubber that mass fraction is 5% and mass fraction are 69%; Polyoxyethylene glycol, activated carbon granule and natural rubber particle, under molten state, by the mode of mechanical blending and mechanical mill, are made to mixing material; Asphalt heating, to molten state, then is added mixing material in the pitch of melting, form mixture, then stir, until there is no bubble in mixture; Mixture is poured in mould, cooling at normal temperatures, make modifying asphalt.
Modifying asphalt of the present invention and plain asphalt have passed through hot air aging test, the test of high low temperature alternation, and contrast conclusion is as follows:
After aging under 70 degrees Celsius, condition of normal pressure, plain asphalt deformation is obvious, and modifying asphalt outward appearance is not any change.
Through the high low temperature alternation test of-10 degrees Celsius ~ 70 degrees Celsius, plain asphalt deformation is obvious, and poly-modifying asphalt outward appearance is not any change.
Plain asphalt ultimate tensile strength is 0.917MPa, and the ultimate tensile strength of modifying asphalt is 1.135MPa, and intensity obviously increases.
Therefore, modifying asphalt of the present invention, has solved existing bituminous material and has caused the larger problem of asphalt performance fluctuation along with varying with temperature easily appears in the variation of temperature.
Claims (2)
1. a modifying asphalt, it is characterized in that, formed by following material by mass percentage: the polyoxyethylene glycol that mass fraction is 6% ~ 25%, the gac that mass fraction is 2% ~ 8%, the natural rubber that mass fraction is 3% ~ 8%, the pitch that mass fraction is 65% ~ 80%, the quality summation of polyoxyethylene glycol, gac, natural rubber and pitch is 100%.
2. the preparation method of polyoxyethylene glycol/gac phase change material modified pitch as claimed in claim 1, is characterized in that, comprises the steps:
The first step, getting respectively mass fraction is 6% ~ 25% polyoxyethylene glycol, the gac that mass fraction is 2% ~ 8%, the natural rubber that mass fraction is 3% ~ 8%, the pitch that mass fraction is 65% ~ 80%, and the quality summation of polyoxyethylene glycol, gac, natural rubber and pitch is 100%;
Second step, under molten state, by the mode of mechanical blending and mechanical mill, makes mixing material by polyoxyethylene glycol, activated carbon granule, natural rubber particle;
The 3rd step, by asphalt heating, to molten state, then the mixing material that second step is made adds in the pitch of melting, forms mixture, then stirs, until there is no bubble in mixture;
The 4th step, pours the mixture forming in the 3rd step in mould into, cooling at normal temperatures, makes modifying asphalt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210545008.7A CN103865279A (en) | 2012-12-14 | 2012-12-14 | Modified asphalt and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210545008.7A CN103865279A (en) | 2012-12-14 | 2012-12-14 | Modified asphalt and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103865279A true CN103865279A (en) | 2014-06-18 |
Family
ID=50904319
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210545008.7A Pending CN103865279A (en) | 2012-12-14 | 2012-12-14 | Modified asphalt and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103865279A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105368084A (en) * | 2015-12-16 | 2016-03-02 | 刘小平 | Modified pitch and preparation method thereof |
-
2012
- 2012-12-14 CN CN201210545008.7A patent/CN103865279A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105368084A (en) * | 2015-12-16 | 2016-03-02 | 刘小平 | Modified pitch and preparation method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102924937B (en) | Modified asphalt with polyethylene glycol/activated carbon phase change material and preparation method thereof | |
| CN101475748B (en) | High strength cold state asphalt fissure cementation water-proof glue and preparation thereof | |
| WO2017202395A1 (en) | Plant mix warm regenerated asphalt mixture and preparation method therefor | |
| CN102304288A (en) | SBS (styrene-butadiene-styrene) modified asphalt waterproof coiled material filled with vitrified microbeads and preparation method thereof | |
| CN101921419B (en) | High-modulus modifier composite of bituminous mixture and preparation method thereof | |
| CN103242666B (en) | Warm mix asphalt additive and preparation method thereof | |
| CN104527154A (en) | A modified asphalt waterproof coiled material and a manufacturing method thereof | |
| CN106675055B (en) | Asphalt warm-mixing modifier and preparation method thereof | |
| CN104327524A (en) | Warm-mixed type water damage resisting asphalt pavement reinforcing agent and preparation method thereof | |
| CN110903664A (en) | Warm-mixed composite modified asphalt and preparation method thereof | |
| CN103145376B (en) | Crumb rubber powder composited regenerated all-weather road cold-patch material and production method thereof | |
| CN103289420A (en) | Admixing type modifier of asphalt mixture | |
| CN105859219B (en) | A kind of half-flexible pavement paste materials and preparation method thereof | |
| CN108483999B (en) | Colored permeable pavement asphalt mixture and preparation and application thereof | |
| CN108504039A (en) | A kind of composite phase-change material and preparation method thereof and asphalt | |
| WO2013060110A1 (en) | Warm-mixed rutting resistant asphalt mixture and preparation method thereof | |
| CN104529259B (en) | A kind of environment-friendly type asphalt brick compound and its method for preparing asphalt brick | |
| CN102672109A (en) | Easy-to-demould precoated sand and production process of easy-to-demould precoated sand | |
| CN102070313B (en) | Additive-free cold patch asphalt material and preparation method thereof | |
| CN112608072B (en) | Asphalt mixture capable of automatically adjusting temperature diseases and preparation method thereof | |
| CN104592852A (en) | Hot-melting road-marking coating and preparation method thereof | |
| CN104819912B (en) | A kind of asphalt foaming determination method for parameter | |
| CN103865279A (en) | Modified asphalt and preparation method thereof | |
| CN105733281A (en) | Heating type modified asphalt high-molecular polymer crack pouring adhesive and method for preparing same | |
| CN102558879A (en) | Compound asphalt mixture wet-mixing additive and preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20140618 |