CN108106976A - It is a kind of to measure the method that miberal powder composition and content are remained in asphalt extractive process - Google Patents
It is a kind of to measure the method that miberal powder composition and content are remained in asphalt extractive process Download PDFInfo
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- CN108106976A CN108106976A CN201711404281.7A CN201711404281A CN108106976A CN 108106976 A CN108106976 A CN 108106976A CN 201711404281 A CN201711404281 A CN 201711404281A CN 108106976 A CN108106976 A CN 108106976A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume, or surface-area of porous materials
- G01N15/02—Investigating particle size or size distribution
- G01N15/0205—Investigating particle size or size distribution by optical means, e.g. by light scattering, diffraction, holography or imaging
- G01N15/0211—Investigating a scatter or diffraction pattern
Abstract
The present invention provides a kind of method for measuring and miberal powder composition and content being remained in asphalt extractive process, comprises the following steps：（1）Particle composition and the distribution of original sample miberal powder are measured using laser particle size analyzer；（2）It will（1）In original sample miberal powder and pitch, gather materials and mix and stir to form asphalt, and scattered cool；（3）Using extractor, extracting（2）In asphalt；（4）It is collected after extracting and does not remain miberal powder, its particle composition and distribution are measured using laser particle size analyzer；（5）Comparison（1）In original sample miberal powder and（4）In the particle for not remaining miberal powder composition and distribution, the difference being made of the two particle determine that residual miberal powder forms, by the content of the integral and calculating residual miberal powder of the two distribution of particles difference.The method of the present invention have it is easy to operate, rapidly and efficiently, be easily achieved, be easy to grasp with promote, data result stability and precision it is high, the advantages of measurement result is intuitively true and reliable.
Description
Technical field
The present invention relates to remain miberal powder in road engineering material more particularly to a kind of measure asphalt extractive process
The method of composition and content.
Background technology
The purpose of asphalt extracting is to separate miberal powder with the mixed solution of pitch-trichloro ethylene, miberal powder and pitch-
The mixed solution separation of trichloro ethylene is by the filter paper barrier set in extracting machine, when the centrifuge of extractor rotates at a high speed
When, extracted solution rotation is driven, the mineral powder granular that grain size is more than filter paper hole is trapped on filter paper, and grain size is less than filter paper hole
Superfine mineral powder particle can be remained in as extracted solution is through filter paper in the mixed solution of pitch-trichloro ethylene.
Miberal powder is separated with the mixed solution of pitch-trichloro ethylene by centrifugal action in asphalt extractive process,
The miberal powder lasting residue of subparticle is had in the mixed solution of pitch-trichloro ethylene, and can not be obtained, is led to not directly
The particle composition of test residual miberal powder.Remain the presence of miberal powder, on the one hand, the asphalt ore deposit obtained by experimental test can be caused
Powder content is relatively low compared with actual value；On the other hand, the accuracy that miberal powder can influence the later stage and evaluate asphalt performance is remained.
The content of the invention
The method of residual miberal powder composition and content in asphalt extractive process is measured the present invention provides a kind of, for the first time
It is proposed the composition and content distribution of residual miberal powder in test asphalt extractive process.
The present invention is realized using following scheme：
It is proposed by the present invention, it is a kind of to measure the method that miberal powder composition and content are remained in asphalt extractive process, bag
Include following operating procedure：
(1) particle composition and the distribution of original sample miberal powder are measured using laser particle size analyzer；
(2) by the original sample miberal powder in (1) and pitch, gather materials to mix and stir to form asphalt, and disperse at ambient temperature
It cools；
(3) using asphalt extractor, the asphalt to cool in extracting (2)；
(4) after extracting, it will be collected into extractor and not remain miberal powder, measured using laser particle size analyzer not residual
The particle composition of shrink powder and distribution；
(5) particle for not remaining miberal powder composition and the distribution in original sample miberal powder and (4) in (1) are compared, by the two particle
The difference of composition determines the composition of residual miberal powder, by the content of the integral and calculating residual miberal powder of the two distribution of particles difference.
As preference, the method for miberal powder composition and content is remained in a kind of measure asphalt extractive process, it is described
(1) and in (4), particle composition and the distribution of miberal powder, preferably MS2000 Malverns laser grain are measured using laser particle size analyzer
Spend analyzer.
As preference, the method for miberal powder composition and content is remained in a kind of measure asphalt extractive process, it is described
(1) and in (4), when measuring particle composition and the distribution of miberal powder, each 3 groups of data above of sample test are averaged as most
Eventually as a result, it is preferred that four groups of data, automatically generate average data, the influence that reduction data fluctuations are brought.
As preference, the method for miberal powder composition and content is remained in a kind of measure asphalt extractive process, it is described
(2) in asphalt, gather materials, the mass percent of pitch and original sample miberal powder is：The pitch of 3~6wt%, the original of 4~8wt%
Sample miberal powder, to gather materials, gross mass meets 100% for remaining.
As preference, a kind of measure the method that miberal powder composition and content are remained in asphalt extractive process, use
When MS2000 Malverns laser particle size analyzer measures particle composition and the distribution of miberal powder, to create clean testing background, point
Powder selects water, refractive index 1.33.
As preference, a kind of measure the method that miberal powder composition and content are remained in asphalt extractive process, use
When MS2000 Malverns laser particle size analyzer measures particle composition and the distribution of miberal powder, to improve the accuracy of test result,
After control adds in mineral powder granular, the obscurity instruction column number value for representing measurement sample concentration is 10-20%.
Wherein the miberal powder of step (2) is limestone mineral powder, and pitch is bi tumenf orr oad or modified pitch, is gathered materials for lime
Often with road-making material, the design level of asphalt is matched somebody with somebody often uses bituminous pavement design grading for AC or SMA for rock or basalt.
The asphalt extractor of step (3) for 20-11100 type asphalts continous way extract analyzer or
The common extractors such as DLC-3 type asphalt separate type extracting machines.
Step (5) is determined residual indirectly by calculating original sample miberal powder and not remaining the particle composition of miberal powder and the difference of distribution
The composition and content of shrink powder.
The beneficial functional of the present invention is：
It is proposed by the present invention to measure the method that miberal powder composition and content are remained in asphalt extractive process, it is put forward for the first time
Quantify the composition and content of residual miberal powder in asphalt extractive process.When the grain size of solid particle is other in the micron-scale
When, particle size distribution can utilize laser diffraction technology to test.In terms of the particle composition and content of miberal powder, original sample miberal powder=
The relational expression for not remaining miberal powder+residual miberal powder exists always, and original sample miberal powder and does not remain miberal powder and can obtain, therefore passes through profit
Do not remain with laser diffraction technology test original sample miberal powder and the particle composition and content of miberal powder, the difference both calculated can between obtain
The composition and content of miberal powder must be remained.Quantify the composition and content of residual miberal powder, not only contribute to check test test gained
The numerical value of asphalt miberal powder content, so as to obtain the actual value of test；And be conducive to later stage assessment residual miberal powder to drip
The influence of blue or green performance, to obtain the accurate result service of asphalt performance evaluation.
In the present invention, the particle diameter distribution of micro-solid particle is measured using laser particle size analyzer, continuous mode is quickly high
Effect, test data have good uniformity, stability, reliability and comparativity.
In the present invention, original sample miberal powder is limestone mineral powder, gathers materials and often uses road-making material for limestone or basalt, and pitch is
Bi tumenf orr oad or modified pitch, test method from experiment material limitation, and with general applicability.Asphalt
It is AC or SMA often with bituminous pavement design grading that design level, which is matched somebody with somebody, and test method and has from the limitation of mixture gradation type
General applicability.Asphalt extractor extracts analyzer or DLC-3 types for 20-11100 type asphalts continous way
Asphalt separate type extracting machine often with extractor, test method from extractor limitation, and with being generally applicable in
Property.
In the present invention, original sample miberal powder and the particle composition for not remaining miberal powder and part are measured using laser particle size analyzer,
By calculating original sample miberal powder and not remaining the particle composition of miberal powder and the difference of distribution, the composition of residual miberal powder is determined indirectly and is contained
Amount, quantized result is accurately and reliably.
The method of the present invention have it is easy to operate, rapidly and efficiently, be easily achieved, be easy to grasp with promote, testing result it is straight
See the advantages of true and reliable.
Description of the drawings
Fig. 1 is the particle composition and distribution map of 1 original sample miberal powder of embodiment；
Fig. 2 is the particle composition and distribution map that embodiment 1 does not remain miberal powder；
Fig. 3 is particle composition and the profiles versus of the particle composition and distribution of 1 original sample miberal powder of embodiment with not remaining miberal powder
Figure；
Fig. 4 is the particle composition and distribution map of 2 original sample miberal powder of embodiment；
Fig. 5 is the particle composition and distribution map that embodiment 2 does not remain miberal powder；
Fig. 6 is particle composition and the profiles versus of the particle composition and distribution of 2 original sample miberal powder of embodiment with not remaining miberal powder
Figure；
Fig. 7 is the particle composition and distribution map of 3 original sample miberal powder of embodiment；
Fig. 8 is the particle composition and distribution map that embodiment 3 does not remain miberal powder；
Fig. 9 is particle composition and the profiles versus of the particle composition and distribution of 3 original sample miberal powder of embodiment with not remaining miberal powder
Figure.
Specific embodiment
In order to make the purpose , technical scheme and advantage of the present invention be clearer, with reference to embodiments, to the present invention
It is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, it is not used to
Limit the present invention.
Embodiment 1
The present invention is a kind of to measure the method that miberal powder composition and content are remained in asphalt extractive process, including following step
Suddenly：
(1) the particle composition of original sample miberal powder is measured using laser particle size analyzer and distribution, testing result is shown in Fig. 1.Laser
Particle Size Analyzer is MS2000 Malvern laser particle size analyzers.
(2) by the original sample miberal powder in (1) it is blue or green with pitch, gather materials to mix and stir to form asphalt, and divide at ambient temperature
Cold scattering is cool.Original sample miberal powder uses limestone mineral powder, and pitch is SBS modified pitch, and testing performance index the results are shown in Table 1.
1 SBS performance of modified bitumen index test results of table
Gather materials using limestone, the test result of relative density is shown in Table 2.
2 relative density of aggregate result of the test of table
| Grain size (mm) | 0.075 | 0.15 | 0.3 | 0.6 | 1.18 | 2.36 | 4.75 | 9.5 | 13.2 |
| Bulk specific gravity | 2.639 | 2.685 | 2.690 | 2.698 | 2.716 | 2.734 | 2.757 | 2.746 | 2.728 |
| Apparent relative density | 2.639 | 2.685 | 2.690 | 2.698 | 2.716 | 2.734 | 2.718 | 2.713 | 2.701 |
The bitumen aggregate ratio of asphalt is 4.2%, and design level, which is matched somebody with somebody, is shown in Table 3.
The design level of 3 asphalt of table is matched somebody with somebody
| Grain size (mm) | 0.075 | 0.15 | 0.3 | 0.6 | 1.18 | 2.36 | 4.75 | 9.5 | 13.2 | 16 |
| Pass through quality percentage (%) | 6 | 8 | 12 | 18 | 24 | 36 | 48 | 70 | 95 | 100 |
Mixing and stirring detailed process is：It the gathering materials of heating, pitch is added in into indoor small first mixes and 90s is mixed and stirred in pot, secondly will
The miberal powder addition of heating, which is mixed, mixes and stirs 90s in pot, the temperature of the heating aggregate is 180 DEG C, and the temperature of heated asphalt is 165 DEG C,
The temperature of miberal powder is heated as 180 DEG C, mixes and stirs temperature as 175 DEG C.
(3) using asphalt extractor, the asphalt to cool in extracting (2).Asphalt extracting is set
Standby is 20-11100 type asphalt analyzers.
(4) after extracting, it will be collected into extractor and not remain miberal powder, measured using laser particle size analyzer not residual
The particle composition and distribution, testing result of shrink powder are shown in Fig. 2.Laser particle size analyzer is MS2000 Malvern laser particle size analysis
Instrument.
(5) compare the particle for the not remaining miberal powder composition in original sample miberal powder and (4) in (1) and distribution, comparing result are shown in
Fig. 3, the difference being made of the two particle determines forming for residual miberal powder, by the integral and calculating residual ore body of the two distribution of particles difference
The content of powder.
The particle composition of original sample miberal powder and distribution work as grain size with not remaining in the particle composition of miberal powder and the comparison diagram of distribution
During 4.365 μm of ＜, the particle percent in volume ＞ of original sample miberal powder does not remain the particle percent in volume of miberal powder, at this time original sample miberal powder
The granule content of middle 4.365 μm of grain size ＜ is more；When grain size=4.365 μm, the particle percent in volume of original sample miberal powder=not residual
The particle percent in volume of shrink powder, the granule content of the two is suitable at this time；As 4.365 μm of grain size ＞, of original sample miberal powder
Grain percentage by volume ＜ does not remain the particle percent in volume of miberal powder, does not remain the particle of 4.365 μm of grain size ＞ in miberal powder at this time
Content is more；It determines therefrom that in asphalt extractive process, remaining miberal powder occurs and is less than 4.365 μm for grain size in original sample miberal powder
Subparticle.When calculating 4.365 μm of grain size ＜, original sample mineral powder granular percentage by volume and mineral powder granular volume basis is not remained
Several differences integrates, i.e. area integral in Fig. 3 in the line of shadow region can obtain and miberal powder is remained in asphalt extractive process
Content, result of calculation 5.38%.
Embodiment 2
The present invention is a kind of to measure the method that miberal powder composition and content are remained in asphalt extractive process, including following step
Suddenly：
(1) the particle composition of original sample miberal powder is measured using laser particle size analyzer and distribution, testing result is shown in Fig. 4.Laser
Particle Size Analyzer is MS2000 Malvern laser particle size analyzers.
(2) by the original sample miberal powder in (1) it is blue or green with pitch, gather materials to mix and stir to form asphalt, and divide at ambient temperature
Cold scattering is cool.Original sample miberal powder uses limestone mineral powder, and pitch is SBS modified pitch, and testing performance index the results are shown in Table 4.
Table 4SBS performance of modified bitumen index test results
| Needle penetration 25 DEG C (0.1mm) | Softening point (DEG C) | Ductility 5 DEG C (cm) |
| 46.7 | 81.6 | 31.0 |
Gather materials using limestone, the test result of relative density is shown in Table 5.
5 relative density of aggregate result of the test of table
| Grain size (mm) | 0.075 | 0.15 | 0.3 | 0.6 | 1.18 | 2.36 | 4.75 | 9.5 | 13.2 |
| Bulk specific gravity | 2.639 | 2.685 | 2.690 | 2.698 | 2.716 | 2.734 | 2.757 | 2.746 | 2.728 |
| Apparent relative density | 2.639 | 2.685 | 2.690 | 2.698 | 2.716 | 2.734 | 2.718 | 2.713 | 2.701 |
The bitumen aggregate ratio of asphalt is 4.2%, and design level, which is matched somebody with somebody, is shown in Table 6.
The design level of 6 asphalt of table is matched somebody with somebody
| Grain size (mm) | 0.075 | 0.15 | 0.3 | 0.6 | 1.18 | 2.36 | 4.75 | 9.5 | 13. 2 | 16 |
| Pass through quality percentage (%) | 6 | 8 | 12 | 18 | 24 | 36 | 48 | 70 | 95 | 100 |
Mixing and stirring detailed process is：It the gathering materials of heating, pitch is added in into indoor small first mixes and 90s is mixed and stirred in pot, secondly will
The miberal powder addition of heating, which is mixed, mixes and stirs 90s in pot, the temperature of the heating aggregate is 180 DEG C, and the temperature of heated asphalt is 165 DEG C,
The temperature of miberal powder is heated as 180 DEG C, mixes and stirs temperature as 175 DEG C.
(3) using asphalt extractor, the asphalt to cool in extracting (2).Asphalt extracting is set
Standby is 20-11100 type asphalt analyzers.
(4) after extracting, it will be collected into extractor and not remain miberal powder, measured using laser particle size analyzer not residual
The particle composition and distribution, testing result of shrink powder are shown in Fig. 5.Laser particle size analyzer is MS2000 Malvern laser particle size analysis
Instrument.
(5) compare the particle for the not remaining miberal powder composition in original sample miberal powder and (4) in (1) and distribution, comparing result are shown in
Fig. 3, the difference being made of the two particle determines forming for residual miberal powder, by the integral and calculating residual ore body of the two distribution of particles difference
The content of powder.
The particle composition of original sample miberal powder and distribution work as grain size with not remaining in the particle composition of miberal powder and the comparison diagram of distribution
During 4.365 μm of ＜, the particle percent in volume ＞ of original sample miberal powder does not remain the particle percent in volume of miberal powder, at this time original sample miberal powder
The granule content of middle 4.365 μm of grain size ＜ is more；When grain size=4.365 μm, the particle percent in volume of original sample miberal powder=not residual
The particle percent in volume of shrink powder, the granule content of the two is suitable at this time；As 4.365 μm of grain size ＞, of original sample miberal powder
Grain percentage by volume ＜ does not remain the particle percent in volume of miberal powder, does not remain the particle of 4.365 μm of grain size ＞ in miberal powder at this time
Content is more；It determines therefrom that in asphalt extractive process, remaining miberal powder occurs and is less than 4.365 μm for grain size in original sample miberal powder
Subparticle.When calculating 4.365 μm of grain size ＜, original sample mineral powder granular percentage by volume and mineral powder granular volume basis is not remained
Several differences integrates, i.e. area integral in Fig. 6 in the line of shadow region can obtain and miberal powder is remained in asphalt extractive process
Content, result of calculation 5.37%.
Embodiment 3
The present invention is a kind of to measure the method that miberal powder composition and content are remained in asphalt extractive process, including following step
Suddenly：
(1) the particle composition of original sample miberal powder is measured using laser particle size analyzer and distribution, testing result is shown in Fig. 7.Laser
Particle Size Analyzer is MS2000 Malvern laser particle size analyzers.
(2) by the original sample miberal powder in (1) it is blue or green with pitch, gather materials to mix and stir to form asphalt, and divide at ambient temperature
Cold scattering is cool.Original sample miberal powder uses limestone mineral powder, and pitch is SBS modified pitch, and testing performance index the results are shown in Table 7.
Table 7SBS performance of modified bitumen index test results
| Needle penetration 25 DEG C (0.1mm) | Softening point (DEG C) | Ductility 5 DEG C (cm) |
| 46.7 | 81.6 | 31.0 |
Gather materials using limestone, the test result of relative density is shown in Table 8.
8 relative density of aggregate result of the test of table
| Grain size (mm) | 0.075 | 0.15 | 0.3 | 0.6 | 1.18 | 2.36 | 4.75 | 9.5 | 13.2 |
| Bulk specific gravity | 2.639 | 2.685 | 2.690 | 2.698 | 2.716 | 2.734 | 2.757 | 2.746 | 2.728 |
| Apparent relative density | 2.639 | 2.685 | 2.690 | 2.698 | 2.716 | 2.734 | 2.718 | 2.713 | 2.701 |
The bitumen aggregate ratio of asphalt is 4.2%, and design level, which is matched somebody with somebody, is shown in Table 9.
The design level of 9 asphalt of table is matched somebody with somebody
| Grain size (mm) | 0.075 | 0.15 | 0.3 | 0.6 | 1.18 | 2.36 | 4.75 | 9.5 | 13.2 | 16 |
| Pass through quality percentage (%) | 6 | 8 | 12 | 18 | 24 | 36 | 48 | 70 | 95 | 100 |
Mixing and stirring detailed process is：It the gathering materials of heating, pitch is added in into indoor small first mixes and 90s is mixed and stirred in pot, secondly will
The miberal powder addition of heating, which is mixed, mixes and stirs 90s in pot, the temperature of the heating aggregate is 180 DEG C, and the temperature of heated asphalt is 165 DEG C,
The temperature of miberal powder is heated as 180 DEG C, mixes and stirs temperature as 175 DEG C.
(3) using asphalt extractor, the asphalt to cool in extracting (2).Asphalt extracting is set
Standby is 20-11100 type asphalt analyzers.
(4) after extracting, it will be collected into extractor and not remain miberal powder, measured using laser particle size analyzer not residual
The particle composition and distribution, testing result of shrink powder are shown in Fig. 8.Laser particle size analyzer is MS2000 Malvern laser particle size analysis
Instrument.
(5) compare the particle for the not remaining miberal powder composition in original sample miberal powder and (4) in (1) and distribution, comparing result are shown in
Fig. 9, the difference being made of the two particle determine forming for residual miberal powder, the integral and calculating residual ore body for having the two distribution of particles difference
The content of powder.
The particle composition of original sample miberal powder and distribution work as grain size with not remaining in the particle composition of miberal powder and the comparison diagram of distribution
During 4.365 μm of ＜, the particle percent in volume ＞ of original sample miberal powder does not remain the particle percent in volume of miberal powder, at this time original sample miberal powder
The granule content of middle 4.365 μm of grain size ＜ is more；When grain size=4.365 μm, the particle percent in volume of original sample miberal powder=not residual
The particle percent in volume of shrink powder, the granule content of the two is suitable at this time；As 4.365 μm of grain size ＞, of original sample miberal powder
Grain percentage by volume ＜ does not remain the particle percent in volume of miberal powder, does not remain the particle of 4.365 μm of grain size ＞ in miberal powder at this time
Content is more；It determines therefrom that in asphalt extractive process, remaining miberal powder occurs and is less than 4.365 μm for grain size in original sample miberal powder
Subparticle.When calculating 4.365 μm of grain size ＜, original sample mineral powder granular percentage by volume and mineral powder granular volume basis is not remained
Several differences integrates, i.e. area integral in Fig. 9 in the line of shadow region can obtain and miberal powder is remained in asphalt extractive process
Content, result of calculation 5.38%.
Claims (6)
1. a kind of measure the method that miberal powder composition and content are remained in asphalt extractive process, it is characterised in that：Including such as
Lower operating procedure：
（1）Particle composition and the distribution of original sample miberal powder are measured using laser particle size analyzer；
（2）It will（1）In original sample miberal powder and pitch, gather materials and mix and stir to form asphalt, and disperse to cool at ambient temperature；
（3）Using asphalt extractor, extracting（2）In the asphalt that cools；
（4）It will be collected into after extracting, in extractor and not remain miberal powder, non-residual ore body is measured using laser particle size analyzer
The particle composition of powder and distribution；
（5）Comparison（1）In original sample miberal powder and（4）In do not remain miberal powder particle composition and distribution, be made of the two particle
Difference determine residual miberal powder composition, by the two distribution of particles difference integral and calculating residual miberal powder content.
2. the side of miberal powder composition and content is remained in a kind of measure asphalt extractive process according to claim 1
Method, it is characterised in that：It is described（1）With（4）In, particle composition and the distribution of miberal powder are measured using laser particle size analyzer.
3. the side of miberal powder composition and content is remained in a kind of measure asphalt extractive process according to claim 1
Method, it is characterised in that：It is described（1）With（4）In, when measuring particle composition and the distribution of miberal powder, each 3 groups of sample test or more number
According to averaging as final result.
4. the side of miberal powder composition and content is remained in a kind of measure asphalt extractive process according to claim 1
Method, it is characterised in that：It is described（2）In asphalt, gather materials, the mass percent of pitch and original sample miberal powder is：3 ~ 6wt%'s
The original sample miberal powder of pitch, 4 ~ 8wt%, to gather materials, gross mass meets 100% for remaining.
5. the side of miberal powder composition and content is remained in a kind of measure asphalt extractive process according to claim 2
Method, it is characterised in that：When particle composition and the distribution of miberal powder are measured using laser particle size analyzer, dispersant selection water.
6. miberal powder composition and content are remained in a kind of measure asphalt extractive process according to claim 2 or 5
Method, it is characterised in that：Represent that the obscurity of measurement sample concentration indicates that column number value is 10-20% after adding in mineral powder granular.
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