CN103630459A - Method used for detecting asphalt content of asphalt mixtures - Google Patents
Method used for detecting asphalt content of asphalt mixtures Download PDFInfo
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- CN103630459A CN103630459A CN201210300383.5A CN201210300383A CN103630459A CN 103630459 A CN103630459 A CN 103630459A CN 201210300383 A CN201210300383 A CN 201210300383A CN 103630459 A CN103630459 A CN 103630459A
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Abstract
The invention relates to a method used for detecting asphalt content of asphalt mixtures. According to the method, the content of asphalt in the asphalt mixtures is determined by determination of percentage content of mineral powder, and further calculation of mineral powder weight in a separated extract. The method comprises 7 following steps: weighing and sampling, mixing, separating, weighing, calculating mineral powder percentage content, calculating mineral powder weight in extracted trichloroethylene, and calculating asphalt content in the asphalt mixtures. Compared with existing technology, the method possesses following beneficial effects: the method is simple in testing processes, efficiency is high, and accuracy of detection results is high. The method is suitable for asphalt amount detection in hot-mixed and hot-paved asphalt mixture pavement construction, and so that blending factory product quality is evaluated. The method is also suitable for determination of asphalt amount of the asphalt mixtures in old road investigation; an asphalt solution extracted using the method can be used for recovering asphalt, and so as to evaluate aging property of asphalt.
Description
Technical field
The present invention relates to a kind of method of measuring material content in compound, relate in particular to a kind of method of testing asphalt Asphalt Content.
Background technology
Now the method for testing of asphalt Asphalt Content is had to high-temperature combustion method, centrifugal separation, solvent method etc.Centrifugal separation of the prior art has the steps such as weighing, sampling, mixing, weighing residual quantity, calculating, because its weighing is for omitting powdered ore quality, when weighing for the compound in extract, itself or employing filter-press are weighed, adopt combustion method to weigh, this kind of method compound is residual more, and measurement result relative precision is low.And for as after drying in filter paper, crucible when material weighing, need material scraper to take out, certainly will cause loss of material, cause test findings inaccurate. moreAnd when this kind of method carried out scraping to omitting powdered ore quality, need refinement, higher to operation requirements, testing procedure is also more loaded down with trivial details, and error is large, causes surveyed bitumen content accuracy low.
Correlation technique content of the present invention has no report.
Summary of the invention
The object of the invention is to propose a kind of easy grasp, step is easy, and measurement result is tested the method for asphalt Asphalt Content accurately.
The technical solution adopted in the present invention is: the method for test asphalt Asphalt Content, it is characterized in that: by breeze degree, and then the powdered ore quality in the extract after calculating separation, thereby draw the content of pitch in asphalt, the present invention includes following steps:
(1) weigh and sample: first weighing the quality of the centrifuging pot of seperator, count m
0, with conical quartering, asphalt to be measured is divided to requirement, put into centrifuging pot, again weigh the gross mass of centrifuging pot and asphalt, and count m
1.
(2) mix: in centrifuging pot, pour extract into, described extract is triclene solution, until flood asphalt, the filter paper that claims quality is covered to pot mouthful, cover after pot cover, centrifuging pot is placed on seperator, tighten after seperator screw standing 30 minutes.
(3) separation: start seperator extract is flowed out, shut down after flowing out, flow to end without extract; After shutdown, by the perforate on pot cover, again in seperator, add the extract of equal in quality to extract, after interpolation, start is separated again; So repeat, until the extract flowing out is limpid weak yellow liquid, the extract of aforementioned outflow is collected together stand-by.
(4) after separation, weigh: by the triclene extracting in step 3 and pitch, breeze mixed liquor, the extract after separation is weighed, and counts m
3, then by stirring rod, stir.
Seperator in step 3 is unloaded to pot cover, take off filter paper, it is that the drying baker of 100 ℃-110 ℃ is dried 3-4 hours that centrifuging pot and filter paper are put into the temperature inside the box jointly, after oven dry, take dry after mineral aggregate and centrifuging pot quality, count m
2.
(5) calculate breeze degree:
1. take the blank pipe quality of the separator tube of soil lyotropic salt seperator, count m4, be accurate to 0.0001 gram;
2. the extract of any weight in rapid extraction step 4 is poured in the separator tube of the easy molten seperator of soil, to filling the separator tube of extract, weighs, and counts m5, is accurate to 0.0001 gram;
3. start soil lyotropic salt seperator to 3500r/min, start shooting after 10 minutes, take out separator tube and pour out triclene solution in separator tube, now breeze is stranded in separator tube bottom, pure triclene rinse solution is poured into and in separator tube, rinsed breeze, and washing fluid is poured into and claimed that quality is m
6crucible in, the crucible that fills washing fluid is placed in 100 ℃ of-110 ℃ of baking ovens and is dried, obtain dried breeze, until constant temperature, to taking dry pot and breeze gross mass after normal temperature, count m
7;
4. calculate separator tube chats powder content in separation vessel.
(6) calculate after extracting powdered ore quality in triclene.
(7) calculate the bitumen content in asphalt.
Compared with prior art, the invention has the beneficial effects as follows: in testing process, method is simple, efficiency is high, and testing result accuracy is high.The asphalt content that this method is applicable to heat while mixing the construction of hot black top mixture pavement detects, to evaluate batching plant's product quality.This method detects the asphalt content of asphalt while being also applicable to the investigation of old road, can be used for reclaiming pitch, to evaluate the ageing property of pitch with the cold primer-oil of this method extracting.
Embodiment
Embodiment: soil lyotropic salt seperator, the seperator that the present invention selects is the existing device of test use, and the centrifugal separator that is not less than 3O00r/min by sample receiver and rotating speed as seperator forms, and separation vessel has filtrate outlet.Annular filter paper with oil resistant between pot cover and centrifuging pot seals.Filtrate is flowed out income returnable bottle from outlet after discharging by filter paper, and instrument must be laid firm and have an air exhausting device.
Soil lyotropic salt seperator is tube centrifuge, and it is divided into GF-divergence type and GQ-clarification type tube centrifuge.GF-divergence type, mainly for separating of various difficult separated emulsion, is specially adapted to the very micro-liquid of two-phase density difference, liquid separated (difference in specific gravity is greater than 0.1%), and the liquid that contains a small amount of impurity, liquid, solid three phase separation.The separation of oil product class, transformer oil, edible oil dehydration and dewaxing, turbine oil, biodiesel, coal tar, lubricating oil, admiralty fuel oil, quenching oil; The separation of various syrups; Separation of whole blood--separated plasma, blood cell from whole blood; The separation of biological products; Oil and water separation, wastewater treatment etc.GQ-clarification type tube centrifuge, is difficult to separated suspending liquid mainly for separating of various, is particularly suitable for that concentration is low, viscosity is large, solid phase particles is thin, the poor less Separation of Solid and Liquid of solid-to-liquid ratio severe.It belongs to prior art, does not belong to summary of the invention of the present invention, therefore its structure is not made to description at this.
The present invention includes following steps:
1, weigh and sample: first weighing the quality of the centrifuging pot of seperator, count m
0.With conical quartering, asphalt to be measured is divided to requirement, put into centrifuging pot, again weigh the gross mass of centrifuging pot and asphalt, and count m
1.
Described conical quartering, for the general weighing technique of test, is that sample blending is done to coning shape, with cross, is divided into four parts.Get a copy of it, this portion is mixed and makes cone shape, and then with four parts of cross deciles, then get a copy of it.So repeat down, until the amount of the sample of getting reaches the amount that test needs.
When choosing, asphalt should note: ① batching plant takes asphalt sample from haul truck, be placed in metal dish and suitably mix and stir, when temperature slightly drops to below 100 ℃, with large beaker, get compound sample mass 1000-1500g left and right (m) (the high limit of coarse grain formula used for asphalt mixture, particulate formula lower bound, middle grain formula is limit in using), accurately to 0.1g; If 2. sample is that Lu Shangyong rig method or patterning method are obtained, the blowing of application electric fan makes its bone dry, put in micro-wave oven or baking oven and suitably after heating, become loose condition (of surface) sampling, but not handy hammering is in case aggregate crusher.
2, mix: in centrifuging pot, pour extract into, extract is triclene solution, until flood asphalt.The filter paper that claims quality is covered to pot mouthful, cover after pot cover, centrifuging pot is placed on seperator, tighten after seperator screw standing 30 minutes.The filter paper of each test is not reused, and while doing experiment, the degree of tightening of seperator screw will be consistent at every turn, prevents that to cause leaving over breeze different due to seperator screw tightening degree varies sample, affects test findings.Be preferably on screw rod and screw with a line of saw blade saw, take screw rod and screw to reach the standard grade that to overlap be screw tightening standard.
Ministry of Communications has stipulated to carry out bitumen content test (T0722-93) by centrifuge method in < < highway engineering Asphalt Mixture Experiment rules > >, in test, must as solvent, to asphalt, carry out solution extracting with triclene.Therefore parameters of triclene solution is not done to concrete introduction at this, it meets < < highway engineering Asphalt Mixture Experiment rules > > regulation, is industrial triclene solution.
3, separation: start seperator extract is flowed out, shut down after flowing out, flow to end without extract; After shutdown, by the perforate on pot cover, again in seperator, add the extract of equal in quality to extract, after interpolation, start is separated again; So repeat, until the extract flowing out is limpid weak yellow liquid.Extract after aforementioned separation is collected together stand-by.
4, after separation, weigh: by the triclene extracting in step 3 and pitch, breeze mixed liquor, the extract after separation is weighed, and counts m
3, then by stirring rod, stir.
Seperator in step 3 is unloaded to pot cover, take off filter paper, it is that the drying baker of 100 ℃-110 ℃ is dried 3-4 hours that centrifuging pot and filter paper are put into the temperature inside the box jointly, after oven dry, take dry after mineral aggregate and centrifuging pot quality, count m
2.This m
2=the quality of filter paper weight+centrifuging pot quality-filter paper after drying own.
5, calculate breeze degree:
1. take the quality of the separator tube of soil lyotropic salt seperator, count m4, be accurate to 0.0001 gram.Now separator tube is blank pipe.
2. the extract of any weight in rapid extraction step 4 is poured in the separator tube of the easy molten seperator of soil, to filling the separator tube of extract, weighs, and counts m5, is accurate to 0.0001 gram.
3. start soil lyotropic salt seperator to 3500r/min, start shooting after 10 minutes, take out separator tube and pour out triclene solution in separator tube, now breeze is stranded in separator tube bottom, pure triclene rinse solution is poured into and in separator tube, rinsed breeze, and washing fluid is poured into and claimed that quality is m
6crucible in, the crucible that fills washing fluid is placed in 100 ℃ of-110 ℃ of baking ovens and is dried, obtain dried breeze, until constant temperature, to taking dry pot and breeze gross mass after normal temperature, count m
7.
4. calculate separator tube chats powder content: m in separation vessel
8=(m
7-m
6)/(m
5-m
4),
In formula: m
8------separator tube chats powder content (%);
M
7-----dry pot and powdered ore quality (g);
M
6-----crucible quality (g);
M
5-----separator tube and the mixed liquor gross mass (g) after stirring of getting;
M
4the blank pipe quality (g) of-----separator tube.
6, calculate after extracting powdered ore quality: m in triclene
9=m
8* m
3,
In formula:
?m
9------leaves over powdered ore quality (g);
M
3------triclene and pitch, breeze gross mass (g).
7, according to following computing method, calculate the bitumen content in asphalt:
Asphalt gross mass m=m
1-m,
In formula: m------asphalt gross mass (g).
Compound mineral aggregate gross mass gross mass m
10=m
2-m
0+ m
9;
In formula: m
10-----compound mineral aggregate gross mass (g);
M
0the quality (g) of-----centrifuging pot;
M
2-----dries rear mineral aggregate and centrifuging pot quality (g);
Bitumen aggregate ratio p
b=(m
1-m
0-m
10)/m
10;
Bitumen content p
a=(m
1-m
0-m
10)/(m
1-m
0);
P
bthe bitumen aggregate ratio (%) of-----asphalt;
P
athe pitch of------asphalt is containing (%).
The present invention compares traditional centrifugal separation and measures bitumen content, its difference is mainly: cancel for easy steps that produces error such as the mineral aggregate on filter paper after drying, the residual compound in centrifuging pot take out, weigh, but holding vessel is directly mixed and weighed with material, and then draw material content in mineral aggregate, residual compound, extract by mathematical computations, can test fast and accurately asphalt Asphalt Content.
Claims (8)
1. a method of testing asphalt Asphalt Content, is characterized in that: by breeze degree, and then calculate the powdered ore quality in the extract after separation, thereby draw the content of pitch in asphalt, the present invention includes following steps:
(1) weigh and sample: first weighing the quality of the centrifuging pot of seperator, count m
0, with conical quartering, asphalt to be measured is divided to requirement, put into centrifuging pot, again weigh the gross mass of centrifuging pot and asphalt, and count m
1;
(2) mix: in centrifuging pot, pour extract into, described extract is triclene solution, until flood asphalt, the filter paper that claims quality is covered to pot mouthful, cover after pot cover, centrifuging pot is placed on seperator, tighten after seperator screw standing 30 minutes;
(3) separation: start seperator extract is flowed out, shut down after flowing out, flow to end without extract; After shutdown, by the perforate on pot cover, again in seperator, add the extract of equal in quality to extract, after interpolation, start is separated again; So repeat, until the extract flowing out is limpid weak yellow liquid, the extract of aforementioned outflow is collected together stand-by;
(4) after separation, weigh: by the triclene extracting in step 3 and pitch, breeze mixed liquor, the extract after separation is weighed, and counts m
3, then by stirring rod, stir;
Seperator in step 3 is unloaded to pot cover, take off filter paper, it is that the drying baker of 100 ℃-110 ℃ is dried 3-4 hours that centrifuging pot and filter paper are put into the temperature inside the box jointly, after oven dry, take dry after mineral aggregate and centrifuging pot quality, count m
2;
(5) calculate breeze degree:
1. take the blank pipe quality of the separator tube of soil lyotropic salt seperator, count m4, be accurate to 0.0001 gram;
2. the extract of any weight in rapid extraction step 4 is poured in the separator tube of the easy molten seperator of soil, to filling the separator tube of extract, weighs, and counts m5, is accurate to 0.0001 gram;
3. start soil lyotropic salt seperator to 3500r/min, start shooting after 10 minutes, take out separator tube and pour out triclene solution in separator tube, now breeze is stranded in separator tube bottom, pure triclene rinse solution is poured into and in separator tube, rinsed breeze, and washing fluid is poured into and claimed that quality is m
6crucible in, the crucible that fills washing fluid is placed in 100 ℃ of-110 ℃ of baking ovens and is dried, obtain dried breeze, until constant temperature, to taking dry pot and breeze gross mass after normal temperature, count m
7;
4. calculate separator tube chats powder content in separation vessel;
(6) calculate after extracting powdered ore quality in triclene;
(7) calculate the bitumen content in asphalt.
2. the method for test asphalt Asphalt Content as claimed in claim 1, is characterized in that: m
2=the quality of filter paper weight+centrifuging pot quality-filter paper after drying own.
3. the method for test asphalt Asphalt Content as claimed in claim 1, is characterized in that: calculate separator tube chats powder content: m in separation vessel
8=(m
7-m
6)/(m
5-m
4).
4. the method for test asphalt Asphalt Content as claimed in claim 1, is characterized in that: powdered ore quality: m in triclene after calculating extracting
9=m
8* m
3.
5. the method for test asphalt Asphalt Content as claimed in claim 1, is characterized in that: asphalt gross mass m=m
1-m.
6. the method for test asphalt Asphalt Content as claimed in claim 1, is characterized in that: compound mineral aggregate gross mass gross mass m
10=m
2-m
0+ m
9.
7. the method for test asphalt Asphalt Content as claimed in claim 1, is characterized in that: bitumen aggregate ratio p
b=(m
1-m
0-m
10)/m
10.
8. the method for test asphalt Asphalt Content as claimed in claim 1, is characterized in that: bitumen content p
a=(m
1-m
0-m
10)/(m
1-m
0).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210300383.5A CN103630459A (en) | 2012-08-22 | 2012-08-22 | Method used for detecting asphalt content of asphalt mixtures |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210300383.5A CN103630459A (en) | 2012-08-22 | 2012-08-22 | Method used for detecting asphalt content of asphalt mixtures |
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| Publication Number | Publication Date |
|---|---|
| CN103630459A true CN103630459A (en) | 2014-03-12 |
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ID=50211737
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|---|---|---|---|
| CN201210300383.5A Pending CN103630459A (en) | 2012-08-22 | 2012-08-22 | Method used for detecting asphalt content of asphalt mixtures |
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|---|---|
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104215549A (en) * | 2014-09-12 | 2014-12-17 | 广东华路交通科技有限公司 | Density testing method of mineral aggregate in recycled asphalt pavement material |
| CN104655518A (en) * | 2015-01-16 | 2015-05-27 | 山东省交通科学研究所 | Method for detecting amount of emulsified asphalt used in emulsified asphalt cold-recycling mixture |
| CN105115851A (en) * | 2015-08-26 | 2015-12-02 | 中国十七冶集团有限公司 | Method for detecting asphalt content in asphaltic sand mixture |
| CN107219147A (en) * | 2017-06-09 | 2017-09-29 | 交通运输部公路科学研究所 | A kind of road fiber heat-resistance test evaluation method |
| CN107442297A (en) * | 2017-09-22 | 2017-12-08 | 苏州欣航微电子有限公司 | A kind of fountain solution purity detecting centrifugal device for offset press |
| CN108387569A (en) * | 2018-01-09 | 2018-08-10 | 西安热工研究院有限公司 | A kind of coal-fired coupled biological matter electricity-generating method of measurable biomass blending amount |
| CN108693067A (en) * | 2018-07-16 | 2018-10-23 | 西安公路研究院 | A kind of assay method of asphalt from asphalt mixture content and bitumen aggregate ratio |
| CN109001258A (en) * | 2018-08-03 | 2018-12-14 | 武汉理工大学 | Bitumen content lossless detection method based on asphalt dielectric property |
| CN112748149A (en) * | 2020-12-23 | 2021-05-04 | 重庆交通建设(集团)有限责任公司 | Asphalt content detection method |
| CN112881228A (en) * | 2021-01-16 | 2021-06-01 | 陕西兴通监理咨询有限公司 | Asphalt mixing extractor and asphalt content determination method |
| CN114486609A (en) * | 2021-12-21 | 2022-05-13 | 中交一公局集团有限公司 | Detection method for segregation degree of asphalt mixture |
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Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104215549A (en) * | 2014-09-12 | 2014-12-17 | 广东华路交通科技有限公司 | Density testing method of mineral aggregate in recycled asphalt pavement material |
| CN104655518A (en) * | 2015-01-16 | 2015-05-27 | 山东省交通科学研究所 | Method for detecting amount of emulsified asphalt used in emulsified asphalt cold-recycling mixture |
| CN104655518B (en) * | 2015-01-16 | 2017-06-16 | 山东省交通科学研究所 | A kind of detection method of Cold Recycled Mixture with Emulsified Asphalt Asphalt emulsion content |
| CN105115851A (en) * | 2015-08-26 | 2015-12-02 | 中国十七冶集团有限公司 | Method for detecting asphalt content in asphaltic sand mixture |
| CN107219147A (en) * | 2017-06-09 | 2017-09-29 | 交通运输部公路科学研究所 | A kind of road fiber heat-resistance test evaluation method |
| CN107442297A (en) * | 2017-09-22 | 2017-12-08 | 苏州欣航微电子有限公司 | A kind of fountain solution purity detecting centrifugal device for offset press |
| CN108387569A (en) * | 2018-01-09 | 2018-08-10 | 西安热工研究院有限公司 | A kind of coal-fired coupled biological matter electricity-generating method of measurable biomass blending amount |
| CN108693067A (en) * | 2018-07-16 | 2018-10-23 | 西安公路研究院 | A kind of assay method of asphalt from asphalt mixture content and bitumen aggregate ratio |
| CN109001258A (en) * | 2018-08-03 | 2018-12-14 | 武汉理工大学 | Bitumen content lossless detection method based on asphalt dielectric property |
| CN109001258B (en) * | 2018-08-03 | 2020-09-01 | 武汉理工大学 | Asphalt content nondestructive testing method based on dielectric property of asphalt mixture |
| CN112748149A (en) * | 2020-12-23 | 2021-05-04 | 重庆交通建设(集团)有限责任公司 | Asphalt content detection method |
| CN112881228A (en) * | 2021-01-16 | 2021-06-01 | 陕西兴通监理咨询有限公司 | Asphalt mixing extractor and asphalt content determination method |
| CN114486609A (en) * | 2021-12-21 | 2022-05-13 | 中交一公局集团有限公司 | Detection method for segregation degree of asphalt mixture |
| CN114486609B (en) * | 2021-12-21 | 2024-02-09 | 中交一公局集团有限公司 | Method for detecting segregation degree of asphalt mixture |
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Application publication date: 20140312 |