CN106433166A - Coal-based asphaltic sand-modified asphalt and preparation method thereof - Google Patents
Coal-based asphaltic sand-modified asphalt and preparation method thereof Download PDFInfo
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- C08L95/00—Compositions of bituminous materials, e.g. asphalt, tar, pitch
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
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- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
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Abstract
The invention belongs to the technical field of modified asphalt for roads, and particularly discloses coal-based asphaltic sand-modified asphalt. The coal-based asphaltic sand-modified asphalt is prepared from coal-based asphaltic sand and matrix asphalt, wherein the coal-based asphaltic sand has the technical indexes that the softening point ranges from 60 DEG C to 80 DEG C, and the needle penetration at 50 DEG C ranges from 20 to 80. A preparation method of the coal-based asphaltic sand-modified asphalt comprises the following steps that 1, the coal-based asphaltic sand is heated at the temperature of 60 DEG C to 80 DEG C and then dehydrated for use; 2, the matrix asphalt is heated to 150 DEG C to 170 DEG C; 3, the coal-based asphaltic sand is added into the matrix asphalt obtained after heating, stirring under heating is conducted to enable the coal-based asphaltic sand to be uniformly dispersed in the matrix asphalt, and then the coal-based asphaltic sand-modified asphalt is obtained. The coal-based asphaltic sand-modified asphalt has the excellent road usage properties such as the high temperature resistance, the durability and the deformation resistance, has no selectivity on the matrix asphalt and is high in universality and suitable for being applied and popularized.
Description
Technical field
The present invention relates to the technical field of modified asphalt for road is and in particular to a kind of coal-based pitch sand and its preparation side
Method.
Background technology
At present, during highway in China construction, modified pitch has obtained commonly used, and wherein most common is SBS
Modified pitch, but research shows：Polymer modified asphalt produce and process equipment in terms of need larger investment, as special
Shearing equipment and more energy resource consumption etc., need constantly to heat and stir, to prevent modifying agent in terms of transport and storage
Layering with pitch and isolation.These shortcomings above-mentioned limit the application of polymer modified asphalt to a certain extent.
In recent years, a kind of Novel modifier-bitumen, with its excellent pavement performance, easy construction technology and warp
Ji reasonable prices enjoy people to favor.Bitumen is all the derivative of oil as matrix pitch, itself and matrix pitch
Between have extraordinary compatibility, therefore both mutually mix when do not exist segregation phenomenon produce, bitumen is to mixing equipment no
Particular/special requirement, only need to add sufficient amount of bitumen modifying agent just can obtain in mix according to the volume that match ratio determines
The modified asphalt mixture significantly improving to durable stable, pavement performance.In addition, it is also very simple in storage, transport and use
Just.Therefore, it has a wide range of applications in the engineerings such as highway, airfield runway and deck paving.Bitumen mainly has
Lake asphalt, kir and seabed pitch.
However, due to bitumen expensive and source limited by due to, limit widely using of bitumen.
Various to the additive types of modifying road asphalt, consider from modified performance, Trinidad lake asphalt (TLA) conduct
Modifying agent has the modified effect of uniqueness, is used on the higher road surface of quality requirement by many developed countries, but LTA is provided
The restriction in source, price is higher, and the scope of application is restricted.
Content of the invention
For problems of the prior art, it is an object of the invention to provide a kind of excellent alternative of pavement performance
Bitumen and cheap, preparation method simple coal-based pitch sand modified pitch and preparation method thereof.
In order to achieve the above object, the present invention employs the following technical solutions and is achieved.
(1) a kind of coal-based pitch sand modified pitch is it is characterised in that include：Coal-based pitch sand and matrix pitch, described
The quality of coal-based pitch sand is the 5-25% of the quality of described matrix pitch.
Preferably, described coal-based pitch sand includes following element：Carbon, hydrogen, sulphur, nitrogen and oxygen.
Preferably, the softening point of described coal-based pitch sand is 60-80 DEG C, and 50 DEG C of needle penetrations are 20-80.
Preferably, the granularity of described coal-based pitch sand is 10 mesh.
Preferably, the quality of described coal-based pitch sand is the 10-20% of the quality of described matrix pitch.
Preferably, the pavement performance standard of described coal-based pitch sand modified pitch includes following technical indicator：60 DEG C of viscosity
In 160-200, unit is Pa s, and in 30-50, unit is 0.1mm to 25 DEG C of needle penetrations, softening point >=47 DEG C；Asphalt rotating thin-film
After heating, the mass loss of residue is ± 0.8%, 25 DEG C of penetration ratio >=50 of residue, drip after asphalt rotating thin-film heating
15 DEG C of residual ductility >=10 of residue after blue or green rotating thin film heating.
(2) a kind of preparation method of coal-based pitch sand modified pitch is it is characterised in that comprise the following steps：
Step 1, coal-based pitch sand is heated under the conditions of 60-80 DEG C, dehydration, standby；
Step 2, heated substrate pitch is to 150-170 DEG C；
Step 3, then add coal-based pitch sand, heating stirring in the matrix pitch after heating, make described coal-based pitch sand
It is dispersed in described matrix pitch, obtain final product.
Further, described heating stirring, is to carry out under conditions of temperature is for 160-180 DEG C.
Further, described heating stirring, its mixing time is 30-90 minute.
Compared with prior art, beneficial effects of the present invention are：
The coal-based pitch sand modified pitch of the present invention has the roads such as excellent high-temperature behavior, durability, non-deformability and uses
Performance, not selectively to matrix pitch simultaneously, highly versatile, it is suitable for popularization and application.
Specific embodiment
Below in conjunction with embodiment, embodiment of the present invention is described in detail.
Coal-based pitch sand is the byproduct that kerosene refines technology altogether, is the material of a kind of high charcoal, high ash and high-sulfur.Hereinafter implement
Coal-based pitch sand in example is that Shaanxi extends the solid product that produced of refinery company in Oil Co., Ltd, mainly by pitch and
Carbon-based material forms, and outward appearance is in black solid cinder shape, and granularity is 10 mesh, but above-mentioned coal-based pitch sand is not limited in the present invention
The scope of coal-based pitch sand.
Have the coal-based pitch sand sample product of five kinds of different technologies indexs in following examples, numbered respectively be 1#, 2#,
3#, 4#, 5#, its all technical is specifically as shown in table 1, and wherein, the test of all technical all drips according to highway engineering
Green grass or young crops and Asphalt Mixture Experiment code》The requirement of (JTG E20-2011) is carried out.
Table 1
Above-mentioned 5# coal-based pitch sand sample product are carried out with technical indicator analysis and elementary analysis detection, technical indicator testing result
As follows：Content of ashes 8%, water content 0.3%, volatile matter content 70.53%, fixing carbon content 27.02%, softening point 64.5
DEG C, 15 DEG C of density are 1.300g/cm3；Elementary analysis result is as follows：Carbon 84.02%, protium 5.9%, element sulphur
0.84%th, nitrogen 0.64%, caloric value is 36396J/g.Knowable to above analysis result, in coal-based pitch sand be mainly carbon,
Two kinds of elements of hydrogen, also contain a small amount of sulphur, nitrogen.Ash content is mainly derived from the material in raw coal, mainly by SiO2、Fe2O3、
Al2O3、CaO、SO3This five kinds of material compositions, account for more than the 90% of ash content, and these materials have certain work to asphalt modification
With the therefore addition of coal-based pitch sand can play a role in improving to the performance of pitch.
Embodiment 1
The present embodiment provides a kind of coal-based pitch sand modified pitch, including coal-based pitch sand and matrix pitch SK-90#, base
The quality of matter pitch meets《Highway engineering Asphalt Pavement Construction Technique specification》The requirement of (JTG F40-2004), performance meets
《Highway engineering pitch and Asphalt Mixture Experiment code》The requirement of (JTG E20-2011).
Prepare coal-based pitch sand modified pitch according to following steps：First coal-based pitch sand is heated, dehydration, standby；So
Heated substrate pitch is to 170 DEG C afterwards；The coal base with respect to matrix pitch quality 15% is added again in the matrix pitch after heating
Tar sand, stirs 30min under the conditions of 170 DEG C, so that described coal-based pitch sand is dispersed in described matrix pitch, obtain final product.
Prepared coal-based pitch sand modified pitch and matrix pitch SK-90# are carried out respectively with three norms test and aging
Test, test is all according to highway engineering pitch and Asphalt Mixture Experiment code》The requirement of (JTG E20-2011) is carried out, test
Result is as shown in table 2.
Table 2
Embodiment 2
The present embodiment provides a kind of coal-based pitch sand modified pitch, including coal-based pitch sand and matrix pitch SK-130#, base
The quality of matter pitch meets《Highway engineering Asphalt Pavement Construction Technique specification》The requirement of (JTG F40-2004), performance meets
《Highway engineering pitch and Asphalt Mixture Experiment code》The requirement of (JTG E20-2011).
Prepare coal-based pitch sand modified pitch according to following steps：First coal-based pitch sand is heated, dehydration, standby；So
Heated substrate pitch is to 170 DEG C afterwards；The coal base with respect to matrix pitch quality 15% is added again in the matrix pitch after heating
Tar sand, stirs 30min under the conditions of 170 DEG C, so that described coal-based pitch sand is dispersed in described matrix pitch, obtain final product.
Prepared coal-based pitch sand modified pitch and matrix pitch SK-90# are carried out respectively with three norms test and aging
Test, test is all according to highway engineering pitch and Asphalt Mixture Experiment code》The requirement of (JTG E20-2011) is carried out, test
Result is as shown in table 3.
Table 3
Embodiment 3
The present embodiment provides a kind of coal-based pitch sand modified pitch, including coal-based pitch sand and matrix pitch SK-90#, base
The quality of matter pitch meets《Highway engineering Asphalt Pavement Construction Technique specification》The requirement of (JTG F40-2004), performance meets
《Highway engineering pitch and Asphalt Mixture Experiment code》The requirement of (JTG E20-2011).
The present embodiment prepares coal-based pitch sand modified pitch using 5# coal-based pitch sand sample product according to following steps：First will
Coal-based pitch sand heats, dehydration, standby；Then heated substrate pitch is to 170 DEG C；Add phase in the matrix pitch after heating again
For the coal-based pitch sand of matrix pitch quality 5%, stir 30min under the conditions of 170 DEG C, so that described coal-based pitch sand is uniformly divided
It is dispersed in described matrix pitch, obtain final product.
Three norms test and degradation are carried out to prepared coal-based pitch sand modified pitch, and with matrix pitch SK-
90# compares, and result of the test is as shown in table 4.
Embodiment 4
The present embodiment provides a kind of coal-based pitch sand modified pitch, including coal-based pitch sand and matrix pitch SK-90#, base
The quality of matter pitch meets《Highway engineering Asphalt Pavement Construction Technique specification》The requirement of (JTG F40-2004), performance meets
《Highway engineering pitch and Asphalt Mixture Experiment code》The requirement of (JTG E20-2011).
The present embodiment prepares coal-based pitch sand modified pitch using 5# coal-based pitch sand sample product according to following steps: first will
Coal-based pitch sand heats, dehydration, standby；Then heated substrate pitch is to 170 DEG C；Add phase in the matrix pitch after heating again
For the coal-based pitch sand of matrix pitch quality 15%, stir 30min under the conditions of 170 DEG C, make described coal-based pitch sand uniform
It is dispersed in described matrix pitch, obtain final product.
Three norms test and degradation are carried out to prepared coal-based pitch sand modified pitch, and with matrix pitch SK-
90# compares, and result of the test is as shown in table 4.
Embodiment 5
The present embodiment provides a kind of coal-based pitch sand modified pitch, including coal-based pitch sand and matrix pitch SK-90#, base
The quality of matter pitch meets《Highway engineering Asphalt Pavement Construction Technique specification》The requirement of (JTG F40-2004), performance meets
《Highway engineering pitch and Asphalt Mixture Experiment code》The requirement of (JTG E20-2011).
The present embodiment prepares coal-based pitch sand modified pitch using 5# coal-based pitch sand sample product according to following steps：First will
Coal-based pitch sand heats, dehydration, standby；Then heated substrate pitch is to 170 DEG C；Add phase in the matrix pitch after heating again
For the coal-based pitch sand of matrix pitch quality 25%, stir 30min under the conditions of 170 DEG C, make described coal-based pitch sand uniform
It is dispersed in described matrix pitch, obtain final product.
Table 4
Three norms test and degradation and DSR (dynamic shearing are carried out to prepared coal-based pitch sand modified pitch
Flow graph) test, and compare with matrix pitch SK-90#, result of the test is as shown in table 4.
Embodiment 6
The present embodiment provides a kind of coal-based pitch sand modified pitch, including coal-based pitch sand and matrix pitch SK-130#, base
The quality of matter pitch meets《Highway engineering Asphalt Pavement Construction Technique specification》The requirement of (JTG F40-2004), performance meets
《Highway engineering pitch and Asphalt Mixture Experiment code》The requirement of (JTG E20-2011).
The present embodiment prepares coal-based pitch sand modified pitch using 5# coal-based pitch sand sample product according to following steps：First will
Coal-based pitch sand heats, dehydration, standby；Then heated substrate pitch is to 170 DEG C；Add phase in the matrix pitch after heating again
For the coal-based pitch sand of matrix pitch quality 5%, stir 30min under the conditions of 170 DEG C, so that described coal-based pitch sand is uniformly divided
It is dispersed in described matrix pitch, obtain final product.
Three norms test and degradation are carried out to prepared coal-based pitch sand modified pitch, and with matrix pitch SK-
130# compares, and result of the test is as shown in table 5.
Embodiment 7
The present embodiment provides a kind of coal-based pitch sand modified pitch, including coal-based pitch sand and matrix pitch SK-130#, base
The quality of matter pitch meets《Highway engineering Asphalt Pavement Construction Technique specification》The requirement of (JTG F40-2004), performance meets
《Highway engineering pitch and Asphalt Mixture Experiment code》The requirement of (JTG E20-2011).
The present embodiment prepares coal-based pitch sand modified pitch using 5# coal-based pitch sand sample product according to following steps：First will
Coal-based pitch sand heats, dehydration, standby；Then heated substrate pitch is to 170 DEG C；Add phase in the matrix pitch after heating again
For the coal-based pitch sand of matrix pitch quality 15%, stir 30min under the conditions of 170 DEG C, make described coal-based pitch sand uniform
It is dispersed in described matrix pitch, obtain final product.
Three norms test and degradation are carried out to prepared coal-based pitch sand modified pitch, and with matrix pitch SK-
130# compares, and result of the test is as shown in table 5.
Embodiment 8
The present embodiment provides a kind of coal-based pitch sand modified pitch, including coal-based pitch sand and matrix pitch SK-130#, base
The quality of matter pitch meets《Highway engineering Asphalt Pavement Construction Technique specification》The requirement of (JTG F40-2004), performance meets
《Highway engineering pitch and Asphalt Mixture Experiment code》The requirement of (JTG E20-2011).
The present embodiment prepares coal-based pitch sand modified pitch using 5# coal-based pitch sand sample product according to following steps：First will
Coal-based pitch sand heats, dehydration, standby；Then heated substrate pitch is to 170 DEG C；Add phase in the matrix pitch after heating again
For the coal-based pitch sand of matrix pitch quality 25%, stir 30min under the conditions of 170 DEG C, make described coal-based pitch sand uniform
It is dispersed in described matrix pitch, obtain final product.
Three norms test and degradation are carried out to prepared coal-based pitch sand modified pitch, and with matrix pitch SK-
130# compares, and result of the test is as shown in table 5.
Table 5
Embodiment 9
The present embodiment provides a kind of coal-based pitch sand modified pitch, including coal-based pitch sand and matrix pitch SK-90#, base
The quality of matter pitch meets《Highway engineering Asphalt Pavement Construction Technique specification》The requirement of (JTG F40-2004), performance meets
《Highway engineering pitch and Asphalt Mixture Experiment code》The requirement of (JTG E20-2011).
The present embodiment prepares coal-based pitch sand modified pitch using 5# coal-based pitch sand sample product according to following steps：First will
Coal-based pitch sand heats, dehydration, standby；Then heated substrate pitch is to 150 DEG C；Add phase in the matrix pitch after heating again
For the coal-based pitch sand of matrix pitch quality 10%, stir 60min under the conditions of 160 DEG C, make described coal-based pitch sand uniform
It is dispersed in described matrix pitch, obtain final product.
Three norms test and degradation are carried out to prepared coal-based pitch sand modified pitch, and with matrix pitch SK-
90# compares, and result of the test is as shown in table 6.
Embodiment 10
The present embodiment provides a kind of coal-based pitch sand modified pitch, including coal-based pitch sand and matrix pitch SK-90#, base
The quality of matter pitch meets《Highway engineering Asphalt Pavement Construction Technique specification》The requirement of (JTG F40-2004), performance meets
《Highway engineering pitch and Asphalt Mixture Experiment code》The requirement of (JTG E20-2011).
The present embodiment prepares coal-based pitch sand modified pitch using 5# coal-based pitch sand sample product according to following steps：First will
Coal-based pitch sand heats, dehydration, standby；Then heated substrate pitch is to 150 DEG C；Add phase in the matrix pitch after heating again
For the coal-based pitch sand of matrix pitch quality 10%, stir 90min under the conditions of 160 DEG C, make described coal-based pitch sand uniform
It is dispersed in described matrix pitch, obtain final product.
Three norms test is carried out to prepared coal-based pitch sand modified pitch, and compares with matrix pitch SK-90#,
Result of the test is as shown in table 6.
Embodiment 11
The present embodiment provides a kind of coal-based pitch sand modified pitch, including coal-based pitch sand and matrix pitch SK-90#, base
The quality of matter pitch meets《Highway engineering Asphalt Pavement Construction Technique specification》The requirement of (JTG F40-2004), performance meets
《Highway engineering pitch and Asphalt Mixture Experiment code》The requirement of (JTG E20-2011).
The present embodiment prepares coal-based pitch sand modified pitch using 5# coal-based pitch sand sample product according to following steps：First will
Coal-based pitch sand heats, dehydration, standby；Then heated substrate pitch is to 150 DEG C；Add phase in the matrix pitch after heating again
For the coal-based pitch sand of matrix pitch quality 10%, stir 60min under the conditions of 170 DEG C, make described coal-based pitch sand uniform
It is dispersed in described matrix pitch, obtain final product.
Three norms test is carried out to prepared coal-based pitch sand modified pitch, and compares with matrix pitch SK-90#,
Result of the test is as shown in table 6.
Embodiment 12
The present embodiment provides a kind of coal-based pitch sand modified pitch, including coal-based pitch sand and matrix pitch SK-90#, base
The quality of matter pitch meets《Highway engineering Asphalt Pavement Construction Technique specification》The requirement of (JTG F40-2004), performance meets
《Highway engineering pitch and Asphalt Mixture Experiment code》The requirement of (JTG E20-2011).
The present embodiment prepares coal-based pitch sand modified pitch using 5# coal-based pitch sand sample product according to following steps：First will
Coal-based pitch sand heats, dehydration, standby；Then heated substrate pitch is to 150 DEG C；Add phase in the matrix pitch after heating again
For the coal-based pitch sand of matrix pitch quality 10%, stir 60min under the conditions of 180 DEG C, make described coal-based pitch sand uniform
It is dispersed in described matrix pitch, obtain final product.
Table 6
Three norms test is carried out to prepared coal-based pitch sand modified pitch, and compares with matrix pitch SK-90#,
Result of the test is as shown in table 6.
High-temperature behavior just refers to that pitch resists the ability of high temperature deformation, and performance in high-temperature behavior for the pitch is to determine pitch
One of key factor of high temperature deformation be resisted in concrete road surface can.At present, various countries are used for evaluating the index of high temperature performance of asphalt
Different, China mainly to characterize pitch with the softening point TR＆B of ring and ball method actual measurement, equivalent softening pointT800, viscosity etc.
High-temperature behavior.As seen from the above embodiment, the softening point of coal-based pitch sand modified substrate pitch is above the softening of matrix pitch
Point, shows that the high-temperature behavior of coal-based pitch sand modified pitch has compared to matrix pitch and significantly improves.
Viscosity refers to the ability of pitch resistance to deformation under external force, and the viscosity of pitch is generally represented with viscosity.
The big pitch of viscosity produces less detrusion under load action, and elastic recovery properties are good, and the permanent plastic of residual becomes
Shape is little, this illustrates the ability of its opposing rut.From above result of the test, the 60 of coal-based pitch sand modified substrate pitch
DEG C viscosity is above 60 DEG C of viscosity of matrix pitch, shows that the rutting resistance of coal-based pitch sand modified pitch drips compared to matrix
Green grass or young crops has significantly improves.
The crack resistance at low-temperature of bituminous paving depends primarily on the cryogenic tensile strain energy of asphalt binder, meanwhile, SHRP
Research shows that 90% low-temperature cracking-resistance is all provided by asphalt binder.From above-mentioned result of the test, coal-based pitch sand
The ductility of modified pitch has declined compared to pitch, but this is possibly due to mineral matter present in coal-based pitch sand and compares
Firmly, result of the test there is is large effect to cause, thus showing the illusion of cryogenic property reduction that is to say, that above-mentioned
The ductility of the coal-based pitch sand modified pitch of embodiment can not accurately show its cryogenic property in addition it is also necessary to by its compound
Performance evaluated.
The ageing properties of pitch are the key factors of impact Service Performance of Asphalt Pavement.At present, in current Chinese code of practice only
There is the index evaluating short ageing, including residual penetration ratio, residual ductility etc..From table 3 and table 4, coal-based pitch sand changes
The residual penetration ratio of property pitch has declined compared to matrix pitch, and this indicates that coal-based pitch sand is anti-ageing to matrix pitch
Change performance has significantly to be improved.But the ductility after coal-based pitch sand modified pitch is aging decreases compared to matrix pitch,
This produces impact mainly due to the mineral matter in coal-based pitch sand to it.Therefore, the present invention can only with residual penetration ratio
Evaluate the ageing properties of pitch.
The needle penetration of pitch and the serviceability of bituminous paving have close relationship, that reflects pitch in load action
Under non-deformability.From above-mentioned result of the test, the coal-based pitch sand modified pitch needle penetration of the present invention is significantly lower than base
25 DEG C of needle penetrations of matter pitch, show the hardness is bigger of coal-based pitch sand modified pitch, non-deformability is stronger,
In addition, from above result of the test, the consumption of coal-based pitch sand, whipping temp and mixing time are all to modified
The performance impacts such as the high-temperature behavior of pitch, durability, non-deformability are larger.
The rheological equationm of state of pitch directly affects the serviceability of bituminous paving, the warp such as the needle penetration of routine, ductility, softening point
The specific embodiment 3-5 of the characteristic of Rheological Measurement of Pitch when the property tested index can not reflect load and temperature change, the therefore present invention
Using the test of dynamic shear rheometer DSR, its rheological property is tested, test method is AASHTO standard TP5-93, adopts
Carried out with the sample that a diameter of 25mm, thickness are 1mm.From the experimental result of table 3, the anti-car of coal-based pitch sand modified pitch
The rut factor is above the rut factor of matrix pitch, and it is larger that this shows that coal-based pitch sand has to the high-temperature behavior of matrix pitch
The lifting of amplitude ground, rutting resistance has and significantly strengthens.
Meanwhile, from above result of the test, the coal-based pitch sand modified pitch of the present invention is applied to various asphalt, to base
The selectivity of matter pitch is not strong, has versatility.And items pavement performance is good, the pavement performance effect with LTA modified pitch
Quite；Meanwhile, raw material refines the byproduct of technology altogether using kerosene, and the resource solving the byproduct that kerosene refines technology altogether is effectively sharp
With alleviating its harm to environment.
Meanwhile, the invention allows for the pavement performance standard of coal-based pitch sand modified pitch, each technical indicator such as table 7 institute
Show.
The pavement performance standard of table 7 coal-based pitch sand modified pitch
Although, in this specification, the present invention is described in detail with a general description of the specific embodiments,
But on the basis of the present invention, it can be made some modifications or improvements, this will be apparent to those skilled in the art.
Therefore, these modifications or improvements without departing from theon the basis of the spirit of the present invention, belong to claimed model
Enclose.
Claims (10)
1. a kind of coal-based pitch sand modified pitch is it is characterised in that include：Coal-based pitch sand and matrix pitch.
2. coal-based pitch sand modified pitch according to claim 1 it is characterised in that described coal-based pitch sand include following
Element：Carbon, hydrogen, sulphur, nitrogen and oxygen.
3. coal-based pitch sand modified pitch according to claim 1 is it is characterised in that the softening point of described coal-based pitch sand
For 60-80 DEG C, 50 DEG C of needle penetrations are 20-80.
4. coal-based pitch sand modified pitch according to claim 1 is it is characterised in that the granularity of described coal-based pitch sand is
10 mesh.
5. coal-based pitch sand modified pitch according to claim 1 is it is characterised in that the quality of described coal-based pitch sand is
The 5-25% of the quality of described matrix pitch.
6. coal-based pitch sand modified pitch according to claim 1 is it is characterised in that the quality of described coal-based pitch sand is
The 10-20% of the quality of described matrix pitch.
7. coal-based pitch sand modified pitch according to claim 1 is it is characterised in that described coal-based pitch sand modified pitch
Pavement performance standard include following technical indicator：In 160-200, unit is Pa s to 60 DEG C of viscosity, and 25 DEG C of needle penetrations are in 30-
50, unit is 0.1mm, softening point >=47 DEG C；After asphalt rotating thin-film heating, the mass loss of residue is ± 0.8%, pitch
25 DEG C of penetration ratio >=50 of residue after rotating thin film heating, 15 DEG C of residual ductilities of residue after asphalt rotating thin-film heating
≥10.
8. the preparation method of the coal-based pitch sand modified pitch described in claim 1 is it is characterised in that comprise the following steps：
Step 1, coal-based pitch sand is heated under the conditions of 60-80 DEG C, dehydration, standby；
Step 2, heated substrate pitch is to 150-170 DEG C；
Step 3, then add coal-based pitch sand, heating stirring in the matrix pitch after heating, make described coal-based pitch sand uniform
It is dispersed in described matrix pitch, obtain final product.
9. the preparation method of coal-based pitch sand modified pitch according to claim 7 is it is characterised in that described heating is stirred
Mix, be to carry out under conditions of temperature is for 160-180 DEG C.
10. the preparation method of coal-based pitch sand modified pitch according to claim 7 is it is characterised in that described heating is stirred
Mix, its mixing time is 30-90 minute.
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| CN107057387A (en) * | 2017-06-13 | 2017-08-18 | 陕西省石油化工研究设计院 | It is a kind of to refine road mix asphalt of tar sand and preparation method thereof altogether containing kerosene |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101875789A (en) * | 2010-07-05 | 2010-11-03 | 长安大学 | Coal directly-liquefied residue composite modified asphalt and preparation method thereof |
| CN104559253A (en) * | 2013-10-28 | 2015-04-29 | 北京建筑大学 | Preparation method for improving asphalt performance by using coal direct liquefied residues |
| CN105802652A (en) * | 2016-05-23 | 2016-07-27 | 神华集团有限责任公司 | Coal liquefaction residue modified asphalt and preparation method and application thereof |
-
2016
- 2016-09-30 CN CN201610872254.1A patent/CN106433166A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101875789A (en) * | 2010-07-05 | 2010-11-03 | 长安大学 | Coal directly-liquefied residue composite modified asphalt and preparation method thereof |
| CN104559253A (en) * | 2013-10-28 | 2015-04-29 | 北京建筑大学 | Preparation method for improving asphalt performance by using coal direct liquefied residues |
| CN105802652A (en) * | 2016-05-23 | 2016-07-27 | 神华集团有限责任公司 | Coal liquefaction residue modified asphalt and preparation method and application thereof |
Non-Patent Citations (8)
| Title |
|---|
| RICHARDC.SELLEY 等: "《石油地质学》", 30 June 2016, 中国石油大学出版社 * |
| 何亮: "煤液化残渣复合改性沥青制备及其性能研究", 《中国优秀硕士学位论文全文数据库工程科技I辑》 * |
| 吴占松 等: "《煤炭清洁有效利用技术》", 31 July 2007, 化学工业出版社 * |
| 季节 等: "煤直接液化残渣与沥青共混后的性能试验研究", 《公路交通科技》 * |
| 季节 等: "煤直接液化残渣共混改性沥青的性能和微观结构", 《北京工业大学学报》 * |
| 张艳荣: "液化残渣改性道路沥青的探索研究", 《中国优秀硕士学位论文全文数据库工程科技II辑》 * |
| 赵永尚: "煤直接液化残渣改性沥青及其胶浆的性能研究", 《中国优秀硕士学位论文全文数据库工程科技II辑》 * |
| 金倬伊: "煤直接液化残渣改性沥青的可行性研究", 《广州化工》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107057387A (en) * | 2017-06-13 | 2017-08-18 | 陕西省石油化工研究设计院 | It is a kind of to refine road mix asphalt of tar sand and preparation method thereof altogether containing kerosene |
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