CN105651644A - Effective substance content tester for emulsified asphalt - Google Patents
Effective substance content tester for emulsified asphalt Download PDFInfo
- Publication number
- CN105651644A CN105651644A CN201410648503.XA CN201410648503A CN105651644A CN 105651644 A CN105651644 A CN 105651644A CN 201410648503 A CN201410648503 A CN 201410648503A CN 105651644 A CN105651644 A CN 105651644A
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- CN
- China
- Prior art keywords
- emulsified bitumen
- working substance
- assay instrument
- substance assay
- control device
- 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
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- 239000010426 asphalt Substances 0.000 title claims abstract description 97
- 239000000126 substance Substances 0.000 title claims abstract description 48
- 238000010438 heat treatment Methods 0.000 claims abstract description 105
- 238000003756 stirring Methods 0.000 claims abstract description 50
- 230000007246 mechanism Effects 0.000 claims abstract description 46
- 238000003556 assay Methods 0.000 claims description 42
- 238000005259 measurement Methods 0.000 claims description 11
- 230000005540 biological transmission Effects 0.000 claims description 9
- 238000012360 testing method Methods 0.000 description 8
- 238000001514 detection method Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 230000009471 action Effects 0.000 description 4
- 230000006378 damage Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000001704 evaporation Methods 0.000 description 4
- 230000008020 evaporation Effects 0.000 description 4
- 239000003795 chemical substances by application Substances 0.000 description 3
- 238000002474 experimental method Methods 0.000 description 3
- 238000013038 hand mixing Methods 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 230000007704 transition Effects 0.000 description 3
- 208000013201 Stress fracture Diseases 0.000 description 2
- 208000027418 Wounds and injury Diseases 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000000796 flavoring agent Substances 0.000 description 2
- 235000019634 flavors Nutrition 0.000 description 2
- 208000014674 injury Diseases 0.000 description 2
- 230000004224 protection Effects 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 238000005303 weighing Methods 0.000 description 2
- 239000012752 auxiliary agent Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000009849 deactivation Effects 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 239000003995 emulsifying agent Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 1
- 229910052753 mercury Inorganic materials 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000012806 monitoring device Methods 0.000 description 1
- 238000011017 operating method Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
Landscapes
- Sampling And Sample Adjustment (AREA)
Abstract
The invention provides a content tester for effective substances of emulsified asphalt. The effective substance content tester for the emulsified asphalt comprises: the stirring device (20) comprises a power mechanism (21) and a stirring mechanism (22) connected with the power mechanism (21), wherein the power mechanism (21) is arranged above the machine body (10); the heating device (30), the heating device (30) is arranged below the stirring device (20); and the control device (40), the control device (40) is electrically connected with the stirring device (20) and the heating device (30), and the control device (40) controls the stirring speed of the stirring device (20) and the heating temperature of the heating device (30). The tester for the content of the effective substances in the emulsified asphalt effectively solves the problem of complex operation for detecting the content of the asphalt in the prior art.
Description
Technical field
The present invention relates to petro-technology field, specifically, it relates to a kind of emulsified bitumen working substance assay instrument.
Background technology
Emulsified bitumen is processed through special warfare by kinds of surface promoting agent, positively charged ion shale control agent and the pitch in certain temperature range with softening temperature.
In the process of processing, oil-in-water state or the liquid bitumen of water-in-oil state can be generated. Usually, after pitch heat being melted, pitch can be made to be separated into tiny micro-droplet status by the physical action of the chemical action of emulsifying agent and machinery. The pitch of tiny micro-droplet status is distributed in a certain amount of water the emulsified bitumen formed.
Emulsified bitumen is at normal temperatures in liquid, and viscosity is very low, good fluidity, is a kind of conventional oil drilling auxiliary agent product. In emulsified bitumen, the bitumen particle of micron-sized positively charged is very easily adsorbed on electronegative solid particulate, thus promotes the formation of mud cake, it is to increase mud cake quality. Particulate and positively charged ion shale control agent in emulsified bitumen can also enter in borehole wall microfracture, produce the effect adhering to and mutually assembling, such that it is able to borehole wall microfracture carries out shutoff and bonding effectively. So just the borehole wall can be played bridge joint, anti-swollen, the anti-collapse and anti-effect falling dehydration, serve reservoir protec-tion effect well.
To in the detection of emulsified bitumen, it is an important indicator to the detection of asphalt content. At present main to heat, hand mixing, the operation weighed complete the detection for emulsified bitumen. Concrete operating method is: first adopt electromagnetic oven heating, needs the hand mixing continued while heating, also needs not deactivation temperature meter to survey temperature while stirring, and this process approximately to be continued 30 minutes. Hereafter, then manual shift electromagnetic oven power, wait laggard row to be cooled to weigh. When detecting, it is necessary to emulsified bitumen is heated to 105 DEG C, the vaporisable matter in emulsified bitumen is evaporated completely, then constant weight measures its working substance.
Therefrom being not difficult to find out, in the testing process of emulsified bitumen, hand mixing time length, working strength are big, and the person is harmful to by the gas of the peculiar smell generated. Meanwhile, the heating temperature-controlled precision of electromagnetic oven is poor, temperature be not easy control and safety coefficient low.
Summary of the invention
It is desirable to provide a kind of emulsified bitumen working substance assay instrument, to solve in prior art the problem of the detection complicated operation to asphalt content.
In order to realize above-mentioned purpose, the present invention provides a kind of emulsified bitumen working substance assay instrument, comprising: body, whipping appts, the stirring mechanism comprising power mechanism and being connected with power mechanism, and power mechanism is arranged on the top of body; Heating unit, heating unit is arranged on the lower section of whipping appts; Control device, control device is electrically connected with whipping appts and heating unit, the stir speed (S.S.) of control device control whipping appts and the Heating temperature of heating unit.
Further, emulsified bitumen working substance assay instrument also comprises angle sensor device, and angle sensor device is measured the rotating speed of stirring mechanism and is electrically connected with control device.
Further, emulsified bitumen working substance assay instrument also comprises temperature sensor, and the temperature of temperature sensor measurement heating unit is also electrically connected with control device.
Further, heating unit comprises the first heating part and the 2nd heating part, and the first heating part and the 2nd heating part are arch, and the first end of the first heating part and the first end of the 2nd heating part are pivotally connected in the lower section of body.
Further, emulsified bitumen working substance assay instrument also comprises containment drum, and the size of containment drum adapts to the first heating part and the arch of the 2nd heating part.
Further, emulsified bitumen working substance assay instrument also comprises humidity sensor, and humidity sensor is electrically connected with control device, the humidity in humidity sensor measurement containment drum.
Further, heating unit comprises the 3rd heating part, and the 3rd heating part is sleeve-like configuration.
Further, power mechanism is motor, and stirring mechanism comprises transmission rod and stirring parts, and the first end of transmission rod is connected with the output terminal of motor, and the 2nd end of transmission rod is connected with stirring parts.
Further, emulsified bitumen working substance assay instrument also comprises indicating meter, and indicating meter is electrically connected with control device, the rotating speed that indicating meter angles of display sensor measurement obtains.
Further, emulsified bitumen working substance assay instrument also comprises speed adjustment knob, and speed adjustment knob is electrically connected with control device.
The technical scheme of application the present invention, the technical scheme of application the present invention, whipping appts comprises power mechanism and stirring mechanism. Described power mechanism is arranged on the top of described body, and stirring mechanism is connected with power mechanism. Stirring mechanism can be driven to carry out stirring action by power mechanism. Heating unit is arranged on the lower section of described whipping appts, it is possible to stirring of pitch to be detected heating simultaneously. Described control device is electrically connected with described whipping appts and described heating unit, just can be controlled the stir speed (S.S.) of described whipping appts and the Heating temperature of described heating unit by described control device.
The emulsified bitumen working substance assay instrument of the present invention can substitute testing staff and it be stirred under emulsified bitumen heating condition, avoids the injury that testing staff is caused by the obnoxious flavour given out when emulsified bitumen heats.
Simultaneously, control device can also control heating unit and emulsified bitumen is heated to assigned temperature, avoid the moisture entrapment that emulsified bitumen underheating causes, it also avoid pitch evaporation emulsified bitumen heated transition and causes, ensure that the data accuracy that asphalt content detects.
Like this, the emulsified bitumen working substance assay instrument of the present invention just can simplify the measurement operation of asphalt content, facilitates the use of testing staff.
Accompanying drawing explanation
The Figure of description of the part forming the application is used to provide a further understanding of the present invention, and the schematic description and description of the present invention, for explaining the present invention, does not form inappropriate limitation of the present invention. In the accompanying drawings:
Fig. 1 shows the structural representation of the embodiment one of the emulsified bitumen working substance assay instrument according to the present invention;
Schematic diagram is looked on the right side that Fig. 2 shows the embodiment one shown in Fig. 1;
Fig. 3 shows the schematic front view of the embodiment one shown in Fig. 1; And,
Fig. 4 shows the structural representation of the embodiment two of the emulsified bitumen working substance assay instrument according to the present invention.
Above-mentioned accompanying drawing comprises the following drawings mark:
10, body; 20, whipping appts;
21, power mechanism; 22, stirring mechanism;
30, heating unit; 31, the first heating part;
32, the 2nd heating part; 40, control device;
50, containment drum; 60, indicating meter;
70, speed adjustment knob.
Embodiment
It should be noted that, when not conflicting, the embodiment in the application and the feature in embodiment can combine mutually. Below with reference to the accompanying drawings and come the present invention is described in detail in conjunction with the embodiments.
The experimental technique that asphalt content measures: asphalt content determination experiment mainly to heat, to stir, constant weight completes. Sample cup is cleaned oven dry weigh, in the sample cup after weighing, adds 100g emulsified bitumen, sample cup is put into constant temperature system, regulate stirred sample, carry out heating work in stirring simultaneously, constant temperature at 105 DEG C until moisture evaporates completely. After sample cup cools, remaining solid is weighed.
Asphalt content:
In formula:
G asphalt quality percentage composition, %;
The quality of m emulsified bitumen sample, g;
M1 sample cup adds stirring rod quality, g;
M2 sample cup, stirring rod add residual asphalt quality in cup, g.
As shown in Figure 1, the emulsified bitumen working substance assay instrument of embodiment one, comprising: body 10, whipping appts 20, heating unit 30 and control device 40. Wherein, the stirring mechanism 22 comprising power mechanism 21 and being connected with power mechanism 21, power mechanism 21 is arranged on the top of body 10, and heating unit 30 is arranged on the lower section of whipping appts 20. Control device 40 is electrically connected with whipping appts 20 and heating unit 30, and control device 40 controls the stir speed (S.S.) of whipping appts 20 and the Heating temperature of heating unit 30.
The technical scheme of Application Example one, whipping appts 20 comprises power mechanism 21 and stirring mechanism 22. Power mechanism 21 is arranged on the top of body 10, and stirring mechanism 22 is connected with power mechanism 21. Stirring mechanism 22 can be driven to carry out stirring action by power mechanism 21. Heating unit 30 is arranged on the lower section of whipping appts 20, it is possible to stirring of pitch to be detected heating simultaneously. Control device 40 is electrically connected with whipping appts 20 and heating unit 30, just can be controlled the stir speed (S.S.) of whipping appts 20 and the Heating temperature of heating unit 30 by control device 40.
The emulsified bitumen working substance assay instrument of embodiment one can substitute testing staff and it be stirred under emulsified bitumen heating condition, avoids the injury that testing staff is caused by the obnoxious flavour given out when emulsified bitumen heats.
Owing to control device 40 can control the Heating temperature of heating unit 30, while being stirred by emulsified bitumen, just constantly need not carry out temperature survey with thermometer. Stirring while with in the process of thermometer measure, the action of stirring is easy to damage thermometer. If thermometer damages, the mercury of its inside flows out volatilization, can be damaged by human body. The emulsified bitumen working substance assay instrument of the present embodiment just completely avoid this kind of dangerous possibility occurred.
Preferably, power mechanism 21 is motor, and stirring mechanism 22 comprises transmission rod and stirring parts, and the first end of transmission rod is connected with the output terminal of motor, and the 2nd end of transmission rod is connected with stirring parts.
Simultaneously, control device 40 can also control heating unit 30 and emulsified bitumen is heated to assigned temperature, avoid the moisture entrapment that emulsified bitumen underheating causes, it also avoid pitch evaporation emulsified bitumen heated transition and causes, ensure that the data accuracy that asphalt content detects.
Like this, embodiment once emulsified bitumen working substance assay instrument can simplify the measurement operation of asphalt content, facilitate the use of testing staff.
In order to ensure the data accuracy that asphalt content detects, emulsified bitumen working substance assay instrument also comprises angle sensor device, and angle sensor device is measured the rotating speed of stirring mechanism 22 and is electrically connected with control device 40. Like this, control device 40 just can receiving angle sensor measure data, the rotation of conservative control stirring mechanism 22. While emulsified bitumen is stirred, also prevent whipping force from spending the emulsified bitumen caused greatly and spatter. If emulsified bitumen spatters, then can have influence on the accuracy of asphalt content detection.
In order to ensure the data accuracy that asphalt content detects, emulsified bitumen working substance assay instrument also comprises temperature sensor, and the temperature of temperature sensor measurement heating unit 30 is also electrically connected with control device 40. Like this, control device 40 just can receive the data of temperature sensor, the heating emulsified bitumen of conservative control heating unit 30. As foregoing is mentioned, the moisture entrapment that emulsified bitumen underheating causes, the pitch evaporation that emulsified bitumen heating transition causes. Control heating unit 30 by temperature sensor cooperative control device 40 to be heated by emulsified bitumen, it is possible to effectively put forward the accuracy measuring the asphalt content data obtained.
As depicted in figs. 1 and 2, in embodiment one, heating unit 30 comprises the first heating part 31 and the 2nd heating part 31, heating part 32, first and the 2nd heating part 32 and is arch, and the first end of the first heating part 31 and the first end of the 2nd heating part 32 are pivotally connected in the lower section of body 10.
Heating unit 30 adopts said structure, it is possible to realize the even heating to emulsified bitumen. Meanwhile, the first end of the first heating part 31 and the first end of the 2nd heating part 32 are pivotally connected in the lower section of body 10, facilitate heating container to put into heating unit 30.
Certainly, the structure of heating unit 30 is not limited to foregoing description. As shown in Figure 4, the technical scheme of embodiment two and the technical scheme difference of embodiment one are, heating unit 30 comprises the 3rd heating part, and the 3rd heating part is sleeve-like configuration. Heating container can also be played the effect of evenly heating by the heating unit 30 of sleeve-like configuration.
As shown in Figure 1, emulsified bitumen working substance assay instrument also comprises containment drum 50, and the size of containment drum 50 adapts to the first heating part 31 and the arch of the 2nd heating part 32. The size of containment drum 50 makes containment drum 50 fully contact with heating unit 30 with the first heating part 31 of arch is suitable with the 2nd heating part, and then ensures the heating efficiency of heating unit 30.
In the technical scheme of embodiment one, emulsified bitumen working substance assay instrument also comprises humidity sensor, and humidity sensor is electrically connected with control device 40, the humidity in humidity sensor measurement containment drum 50. Like this, so that it may fully evaporate with the moisture guaranteed in emulsified bitumen.
As shown in Figure 3, in embodiment one, emulsified bitumen working substance assay instrument also comprises indicating meter 60, and indicating meter 60 is electrically connected with control device 40, the rotating speed that indicating meter 60 angles of display sensor measurement obtains.Observed the rotating speed of stirring mechanism 22 by indicating meter 60, it is convenient to testing staff and emulsified bitumen working substance assay instrument is adjusted, to obtain best mixing effect. Preferably, emulsified bitumen working substance assay instrument also comprises speed adjustment knob 70, and speed adjustment knob 70 is electrically connected with control device 40.
The content that indicating meter 60 shows is not limited to the rotating speed of stirring mechanism 22, it is also possible to show the humidity in Heating temperature or heating container. Certainly, display mode is not limited to use one piece of indicating meter 60 to show, it is also possible to rotating speed, temperature and humidity are shown by choice for use polylith indicating meter 60 respectively.
The emulsified bitumen working substance assay instrument operating process of the present invention is as follows:
1. monitoring device power supply connects, it is ensured that supply lead connects correct;
2. containment drum 50 being cleaned oven dry to weigh, add 100g emulsified bitumen, sample cup is put into heating unit 30 in the sample cup after weighing, stirring mechanism 22 submerges sample liquid level;
3. turn on the power switch, setting stirring velocity and Heating temperature, start to run;
4. detect humidity, if humidity is up to standard, can be considered moisture evaporation completely;
5. after cooling stirring mechanism 22 is unloaded and put into sample cup and weigh;
6. experiment is complete first closes power switch, then pulls out supply socket.
These are only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations. Within the spirit and principles in the present invention all, any amendment of doing, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. an emulsified bitumen working substance assay instrument, it is characterised in that, comprising:
Body (10);
Whipping appts (20), the stirring mechanism (22) comprising power mechanism (21) and be connected with described power mechanism (21), described power mechanism (21) is arranged on the top of described body (10);
Heating unit (30), described heating unit (30) is arranged on the lower section of described whipping appts (20);
Control device (40), described control device (40) is electrically connected with described whipping appts (20) and described heating unit (30), and described control device (40) controls the stir speed (S.S.) of described whipping appts (20) and the Heating temperature of described heating unit (30).
2. emulsified bitumen working substance assay instrument according to claim 1, it is characterized in that, described emulsified bitumen working substance assay instrument also comprises angle sensor device, and described angle sensor device is measured the rotating speed of described stirring mechanism (22) and is electrically connected with described control device (40).
3. emulsified bitumen working substance assay instrument according to claim 1, it is characterized in that, described emulsified bitumen working substance assay instrument also comprises temperature sensor, and the temperature of heating unit (30) described in described temperature sensor measurement is also electrically connected with described control device (40).
4. emulsified bitumen working substance assay instrument according to claim 1, it is characterized in that, described heating unit (30) comprises the first heating part (31) and the 2nd heating part (32), described first heating part (31) and described 2nd heating part (32) are arch, and the first end of described first heating part (31) and the first end of described 2nd heating part (32) are pivotally connected in the lower section of described body (10).
5. emulsified bitumen working substance assay instrument according to claim 4, it is characterized in that, described emulsified bitumen working substance assay instrument also comprises containment drum (50), and the size of described containment drum (50) adapts to described first heating part (31) and the arch of described 2nd heating part (32).
6. emulsified bitumen working substance assay instrument according to claim 5, it is characterized in that, described emulsified bitumen working substance assay instrument also comprises humidity sensor, described humidity sensor is electrically connected with described control device (40), the humidity in containment drum (50) described in described humidity sensor measurement.
7. emulsified bitumen working substance assay instrument according to claim 1, it is characterised in that, described heating unit (30) comprises the 3rd heating part, and described 3rd heating part is sleeve-like configuration.
8. emulsified bitumen working substance assay instrument according to claim 1, it is characterized in that, described power mechanism (21) is motor, described stirring mechanism (22) comprises transmission rod and stirring parts, the first end of described transmission rod is connected with the output terminal of described motor, and the 2nd end of described transmission rod is connected with described stirring parts.
9. emulsified bitumen working substance assay instrument according to claim 2, it is characterized in that, described emulsified bitumen working substance assay instrument also comprises indicating meter (60), described indicating meter (60) is electrically connected with described control device (40), and described indicating meter (60) shows the rotating speed that described angle sensor device measurement obtains.
10. emulsified bitumen working substance assay instrument according to claim 9, it is characterized in that, described emulsified bitumen working substance assay instrument also comprises speed adjustment knob (70), and described speed adjustment knob (70) is electrically connected with described control device (40).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410648503.XA CN105651644A (en) | 2014-11-14 | 2014-11-14 | Effective substance content tester for emulsified asphalt |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410648503.XA CN105651644A (en) | 2014-11-14 | 2014-11-14 | Effective substance content tester for emulsified asphalt |
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| Publication Number | Publication Date |
|---|---|
| CN105651644A true CN105651644A (en) | 2016-06-08 |
Family
ID=56478896
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410648503.XA Pending CN105651644A (en) | 2014-11-14 | 2014-11-14 | Effective substance content tester for emulsified asphalt |
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| Country | Link |
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| CN (1) | CN105651644A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107345887A (en) * | 2017-08-08 | 2017-11-14 | 山东省交通科学研究院 | A kind of bituminous milling material class ground surface material rapid determination of water content instrument |
| CN111796078A (en) * | 2020-08-10 | 2020-10-20 | 淄博纳瑞仪器有限公司 | Petroleum anti-emulsification performance tester |
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| CN2903096Y (en) * | 2006-02-14 | 2007-05-23 | 钢铁研究总院 | Geseous phase penetration/deposition apparatus of carbonyl metal compound |
| CN201859128U (en) * | 2010-11-12 | 2011-06-08 | 长安大学 | Automatic temperature rise asphalt softening point determinator |
| CN203411880U (en) * | 2013-06-14 | 2014-01-29 | 天津渤海晟机械设备配件有限公司 | Pitch heating kettle |
| CN203688471U (en) * | 2013-10-17 | 2014-07-02 | 中国石油化工股份有限公司 | Asphalt heat storage stability test system |
-
2014
- 2014-11-14 CN CN201410648503.XA patent/CN105651644A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2903096Y (en) * | 2006-02-14 | 2007-05-23 | 钢铁研究总院 | Geseous phase penetration/deposition apparatus of carbonyl metal compound |
| CN201859128U (en) * | 2010-11-12 | 2011-06-08 | 长安大学 | Automatic temperature rise asphalt softening point determinator |
| CN203411880U (en) * | 2013-06-14 | 2014-01-29 | 天津渤海晟机械设备配件有限公司 | Pitch heating kettle |
| CN203688471U (en) * | 2013-10-17 | 2014-07-02 | 中国石油化工股份有限公司 | Asphalt heat storage stability test system |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107345887A (en) * | 2017-08-08 | 2017-11-14 | 山东省交通科学研究院 | A kind of bituminous milling material class ground surface material rapid determination of water content instrument |
| CN107345887B (en) * | 2017-08-08 | 2023-08-04 | 山东省交通科学研究院 | Quick tester for water content of asphalt-containing milling material pavement material |
| CN111796078A (en) * | 2020-08-10 | 2020-10-20 | 淄博纳瑞仪器有限公司 | Petroleum anti-emulsification performance tester |
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Application publication date: 20160608 |