CN112630086A - Method for detecting solid content of emulsified asphalt - Google Patents
Method for detecting solid content of emulsified asphalt Download PDFInfo
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- CN112630086A CN112630086A CN202011260521.2A CN202011260521A CN112630086A CN 112630086 A CN112630086 A CN 112630086A CN 202011260521 A CN202011260521 A CN 202011260521A CN 112630086 A CN112630086 A CN 112630086A
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- 239000010426 asphalt Substances 0.000 title claims abstract description 103
- 239000007787 solid Substances 0.000 title claims abstract description 48
- 238000000034 method Methods 0.000 title claims abstract description 33
- 238000001514 detection method Methods 0.000 claims abstract description 90
- 238000010438 heat treatment Methods 0.000 claims description 66
- 125000000129 anionic group Chemical group 0.000 claims description 10
- 229910052736 halogen Inorganic materials 0.000 claims description 4
- 150000002367 halogens Chemical class 0.000 claims description 4
- 125000002091 cationic group Chemical group 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 12
- 238000005516 engineering process Methods 0.000 abstract description 4
- 230000000694 effects Effects 0.000 abstract description 2
- 238000012360 testing method Methods 0.000 description 14
- 238000007655 standard test method Methods 0.000 description 11
- 230000000052 comparative effect Effects 0.000 description 10
- 230000008020 evaporation Effects 0.000 description 8
- 238000001704 evaporation Methods 0.000 description 8
- 230000008569 process Effects 0.000 description 6
- 238000010998 test method Methods 0.000 description 6
- 239000000203 mixture Substances 0.000 description 5
- 150000001768 cations Chemical class 0.000 description 4
- 238000012986 modification Methods 0.000 description 4
- 230000004048 modification Effects 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 238000013215 result calculation Methods 0.000 description 2
- 239000008149 soap solution Substances 0.000 description 2
- 239000000654 additive Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000003995 emulsifying agent Substances 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000002262 irrigation Effects 0.000 description 1
- 238000003973 irrigation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000010907 mechanical stirring Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000007764 o/w emulsion Substances 0.000 description 1
- 238000003908 quality control method Methods 0.000 description 1
- 230000008929 regeneration Effects 0.000 description 1
- 238000011069 regeneration method Methods 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 238000004078 waterproofing Methods 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N5/00—Analysing materials by weighing, e.g. weighing small particles separated from a gas or liquid
- G01N5/04—Analysing materials by weighing, e.g. weighing small particles separated from a gas or liquid by removing a component, e.g. by evaporation, and weighing the remainder
- G01N5/045—Analysing materials by weighing, e.g. weighing small particles separated from a gas or liquid by removing a component, e.g. by evaporation, and weighing the remainder for determining moisture content
Landscapes
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Or Analyzing Materials Using Thermal Means (AREA)
Abstract
The invention relates to the technical field of emulsified asphalt production technology and application technology, in particular to a method for detecting the solid content of emulsified asphalt. The method utilizes the rapid moisture tester to detect the emulsified asphalt, and improves the detection effect by optimizing the detection parameters. The method shortens the detection time from the original 20-40min to 2-5min, greatly shortens the detection period, improves the detection efficiency, has the advantages of higher accuracy, high parallelism, safety and stability, and can guide the production by utilizing rapid detection in the actual production of the emulsified asphalt.
Description
Technical Field
The invention relates to the technical field of emulsified asphalt production technology and application technology, in particular to a method for detecting the solid content of emulsified asphalt.
Background
The emulsified asphalt is road asphalt which is solid or semi-solid at normal temperature, is dispersed in water containing an emulsifier and other additives through mechanical stirring and chemical stability to form oil-in-water emulsion, is widely applied in the fields of road construction and maintenance, waste material regeneration, building waterproofing, agriculture and forestry and the like, and has a very wide application space.
The content of asphalt in the emulsified asphalt is called as solid content, because the emulsified asphalt is actually used in the using process, the emulsified asphalt is only in a transition state, in addition, the solid content also has a remarkable influence on the indexes of the emulsified asphalt product, and particularly, the solid content needs to be strictly controlled in the production process, so the solid content is an important index for the emulsified asphalt in both the production process and the actual application. The current test method of the standard solid content of emulsified asphalt is JTG E20-2011 test procedure for road engineering asphalt and asphalt mixture T0651-1993 content test of the evaporated residue of the emulsified asphalt, the standard test method is that 300g +/-1 g of emulsified asphalt is added into a sample container (1500mL, a metal disc with the height of about 60mm and the wall thickness of 0.5-1 mm can be replaced by a small aluminum pot or a ceramic evaporation vessel), then the container containing the sample is placed on an electric furnace or a gas furnace to be slowly heated and continuously stirred until the water is completely evaporated, then the container is heated for 1min at the temperature of 163 +/-3 ℃, the solid content of the emulsified asphalt is weighed and calculated, and the whole heating process usually needs 20-40 min.
The standard test method mainly has the following disadvantages:
firstly, the time consumption is long and the operation is inconvenient. The standard test method is inconvenient to operate in the detection process, needs continuous manual stirring, takes long time, needs 20-30min, needs quality control in the production process, and has long detection time, so that the production period is long, and stable production is influenced.
Secondly, the test result has poor parallelism. Under the standard test method, human factors are more, the complete evaporation of water has no clear standard, and the parallelism of test results is poor due to different operation methods, containers, heating equipment, heating power and the like of each tester.
And thirdly, potential safety hazards exist in the operation process. Under a standard test method, the emulsified asphalt is easy to boil, expand in volume and bubble in the heating process, if the emulsified asphalt cannot be stirred continuously and stably in time, the emulsified asphalt is easy to overflow out of a test container, and potential safety hazards exist at high temperature.
The standard experiment method has the defects of long time consumption, inconvenient operation, poor experimental result flatness, potential safety hazard in the operation process and the like, and easily causes the problems of result deviation, inconsistent multi-party detection results and the like, and has data disputes.
Disclosure of Invention
In view of the above, the technical problem to be solved by the present invention is to provide a method for rapidly, stably and accurately detecting the solid content of emulsified asphalt.
The method for detecting the solid content of the emulsified asphalt provided by the invention utilizes a rapid moisture tester to detect the emulsified asphalt; the heating mode of the rapid moisture tester is rapid heating;
the initial heating temperature of the rapid moisture tester is room temperature, the end temperature is 130-200 ℃, and the heating rate is 100 ℃/min.
The room temperature of the invention is 18-35 ℃. The heating method comprises infrared lamp tube heating, halogen lamp tube heating or microwave heating. In the embodiment of the invention, the heating method is halogen lamp tube heating. The method for heating by adopting the halogen lamp tube to realize optional heating comprises the following steps: standard heating, step heating or rapid heating. In the embodiment of the present invention, the heating is preferably performed in a rapid manner.
In the invention, the emulsified asphalt is common emulsified asphalt or modified emulsified asphalt.
In some embodiments, the common emulsified asphalt is anionic emulsified asphalt or cationic emulsified asphalt;
the heating starting temperature of the rapid moisture tester is room temperature, the end point temperature is 140 ℃, and the heating rate is 100 ℃/min.
In some embodiments, the modified emulsified asphalt is SBS modified emulsified asphalt;
the heating starting temperature of the rapid moisture tester is room temperature, the end point temperature is 140 ℃, and the heating rate is 100 ℃/min.
The sampling amount of the emulsified asphalt is 2g +/-0.2 g.
The thickness of the emulsified asphalt sample is 0.5 mm.
The heating end point is automatically judged by an instrument, and the heating time is 2-5 min.
The invention provides a method for detecting the solid content of emulsified asphalt, which utilizes a rapid moisture tester to detect the emulsified asphalt and improves the detection effect by optimizing detection parameters. The method shortens the detection time from the original 20-40min to 2-5min, greatly shortens the detection period, improves the detection efficiency, and has the advantages of higher accuracy, high parallelism, safety and stability.
Detailed Description
The invention provides a method for detecting the solid content of emulsified asphalt, and a person skilled in the art can use the contents to reference the contents and appropriately improve the process parameters to realize the detection. It is expressly intended that all such similar substitutes and modifications which would be obvious to one skilled in the art are deemed to be included in the invention. While the methods and applications of this invention have been described in terms of preferred embodiments, it will be apparent to those of ordinary skill in the art that variations and modifications in the methods and applications described herein, as well as other suitable variations and combinations, may be made to implement and use the techniques of this invention without departing from the spirit and scope of the invention.
The detection method mainly adopts a detection instrument as a rapid moisture tester:
the first step is as follows: and setting parameters of the rapid moisture tester. Setting the heating mode of the rapid moisture tester to be standard heating, step heating or rapid heating, and setting the heating end point temperature to be 130-200 ℃;
the second step is that: 2g +/-0.2 g of an emulsified asphalt sample is taken by plastic drip irrigation and is placed in an instrument sample container, the sample is uniformly spread into a thin layer, and the instrument cover is closed;
the third step: heating is started by clicking, the instrument automatically finishes the heating process, the instrument automatically finishes the judgment of the heating end point, and the heating process is finished within 2-5 min.
The fourth step: the instrument automatically completes result calculation and reads the detection result.
The fifth step: and repeating the second step to the fourth step to finish the next group of sample detection.
The invention is further illustrated by the following examples:
example 1:
the first step is as follows: setting instrument parameters, setting the heating mode of the rapid moisture meter to be a rapid heating mode, and setting the terminal temperature to be 140 ℃.
The second step is that: 2 +/-0.2 g of an anionic emulsified asphalt sample with the theoretical solid content of 60 percent is taken by a plastic dropper and added into a sample container of an instrument, and the sample is uniformly spread out to form a uniform thin layer in the container.
The third step: and clicking an instrument start button to automatically start heating detection.
The fourth step: and (5) completing detection within 2-5min, automatically weighing by an instrument and completing detection result calculation.
The fifth step: and reading a detection result, cleaning the sample container of the instrument, repeating the second step to the fourth step, and completing three times of parallelism detection on the same group of samples to obtain a detection result.
The detection results and the detection time are shown in table 1:
table 1: result and time consumption for detecting solid content of anionic emulsified asphalt by rapid detection method
Comparative example 1:
according to a standard test method JTG E20-2011 road engineering asphalt and asphalt mixture test procedure T0651-1993 test for detecting the content of evaporated residue of emulsified asphalt, the anionic emulsified asphalt samples with the theoretical solid content of 60% are compared, and the detection result and the detection time consumption are shown in the table 2:
table 2: result and time consumption for detecting solid content of anionic emulsified asphalt by rapid detection method
Comparative example 2
An anionic emulsified asphalt sample with the theoretical solid content of 60% is taken as a sample, the steps in the example 1 are adopted for detection, the heating mode is rapid heating, the end point temperature is set to be 100 ℃, and the detection result and the detection time consumption are shown in Table 3
Table 3: result and time consumption for detecting solid content of anionic emulsified asphalt by rapid detection method
Comparative example 3
An anionic emulsified asphalt sample with the theoretical solid content of 60% is taken as a sample, the steps in the example 1 are adopted for detection, the heating mode is rapid heating, the end point temperature is set to be 180 ℃, and the detection results and the detection time consumption are shown in Table 4
Table 4: result and time consumption for detecting solid content of anionic emulsified asphalt by rapid detection method
According to the results, the test for detecting the content of the evaporation residues by adopting the T0651-1993 emulsified asphalt has longer detection time; the end point temperature is set as 100 ℃, the detection time is shortened compared with the T0651-1993 method, but the detection time is still longer; the end point temperature was set at 180 ℃ and the detection time was reduced, but the results fluctuated significantly.
Example 2:
the PC-3 emulsified asphalt with the solid content of 50 percent is selected as a sample, the steps in the example 1 are adopted for detection, and the detection result and the detection time consumption are shown in Table 5
Table 5: result and time consumption for detecting solid content of cation emulsified asphalt by rapid detection method
Comparative example 4:
the PC-3 emulsified asphalt samples with 50% solid content were tested according to the standard test method JTG E20-2011 test procedure for road engineering asphalt and asphalt mixture T0651-1993 emulsified asphalt evaporation residue content test, and the test results and test time are shown in Table 6:
table 6: result and time consumption for detecting solid content of cation emulsified asphalt by standard test method
Comparative example 5
The PC-3 emulsified asphalt with 50% of solid content is selected as a sample, the steps in the example 1 are adopted for detection, the heating mode is rapid heating, the end point temperature is set to be 100 ℃, and the detection results and the detection time consumption are shown in Table 7
Table 7: result and time consumption for detecting solid content of cation emulsified asphalt by rapid detection method
Comparative example 6
The PC-3 emulsified asphalt with 50% of solid content is selected as a sample, the steps in the example 1 are adopted for detection, the heating mode is standard heating, the end point temperature is set to be 140 ℃, and the detection results and the detection time consumption are shown in Table 8
Table 8: result and time consumption for detecting solid content of cation emulsified asphalt by rapid detection method
According to the results, the test for detecting the content of the evaporation residues by adopting the T0651-1993 emulsified asphalt has longer detection time; the end point temperature is set as 100 ℃, the detection time is shortened compared with the T0651-1993 method, but the detection time is still longer; the end point temperature was set at 140 ℃ and the heating mode was changed to standard heating, and the detection time was reduced but longer than that of the example.
Example 3:
SBS modified emulsified asphalt with 50% solid content is selected as a sample, the steps in the embodiment 1 are adopted for detection, when instrument parameters are set in the first step, the end point temperature is set to be 170 ℃, and the detection result and the detection time consumption are shown in Table 9
Table 9: result and time consumption for detecting solid content of SBS modified emulsified asphalt by rapid detection method
Comparative example 7:
the SBS modified emulsified asphalt samples with 50% solid content are detected according to a standard test method JTG E20-2011 road engineering asphalt and asphalt mixture test procedure T0651-1993 emulsified asphalt evaporation residue content test for comparison, and the detection results and the detection time consumption are shown in Table 10:
table 10: results and time consumption for detecting solid content of SBS modified emulsified asphalt by standard test method
The detection results of the three examples and the comparative example show that the standard test method JTG E20-2011 test procedure for testing road engineering asphalt and asphalt mixture T0651-1993 emulsified asphalt evaporation residue content test has long time consumption, different time consumption and poor result repeatability, which indicates that the detection process has more interference of human factors, ambiguous result judgment and inaccurate detection result.
Comparative example 8
SBS modified emulsified asphalt with 50% solid content is selected as a sample, the steps in the example 1 are adopted for detection, the heating mode is rapid heating, the end point temperature is set to be 100 ℃, and the detection results and the detection time consumption are shown in Table 11
Table 11: result and time consumption for detecting solid content of SBS modified emulsified asphalt by rapid detection method
Comparative example 9
SBS modified emulsified asphalt with 50% solid content is selected as a sample, the steps in the embodiment 1 are adopted for detection, the end point temperature is set to be 170 ℃, the heating is carried out in a step heating mode, and the detection result and the detection time consumption are shown in Table 12
Table 12: result and time consumption for detecting solid content of SBS modified emulsified asphalt by rapid detection method
According to the results, the test for detecting the content of the evaporation residues by adopting the T0651-1993 emulsified asphalt has longer detection time; the end point temperature is set as 100 ℃, the detection time is shortened compared with the T0651-1993 method, but the detection time is still longer; the end point temperature was set at 170 ℃ and the heating mode was changed to step heating, and the detection time was reduced but longer than that of the example.
The rapid detection method can greatly shorten the detection period, is simple and convenient to operate, avoids the interference of human factors, and has good repeatability and higher accuracy of the detection result. The method is simple, convenient, efficient, stable and safe for detecting the solid content of the emulsified asphalt.
In addition, the rapid detection method is also applied to the formal production of emulsified asphalt, the solid content of the emulsified asphalt is a very key and important index for the emulsified asphalt, the solid content is controlled by controlling the proportion of the soap solution and the asphalt during the production of the emulsified asphalt, if the solid content is influenced by the pressure of a flow meter or a device of the soap solution and the asphalt, the solid content fluctuates, the solid content change of the emulsified asphalt is detected in real time and adjusted in the production process of the emulsified asphalt by a rapid detection method, and the purpose of stabilizing the solid content of the emulsified asphalt is achieved.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that it is obvious to those skilled in the art that various modifications and improvements can be made without departing from the principle of the present invention, and these modifications and improvements should also be considered as the protection scope of the present invention.
Claims (8)
1. A method for detecting the solid content of emulsified asphalt is characterized in that a rapid moisture tester is used for detecting the emulsified asphalt; the heating mode of the rapid moisture tester is rapid heating;
the initial heating temperature of the rapid moisture tester is room temperature, the end temperature is 130-200 ℃, and the heating rate is 100 ℃/min.
2. The detection method according to claim 1, wherein the heating method is halogen lamp tube heating.
3. The detection method according to claim 1, wherein the emulsified asphalt is a common emulsified asphalt or a modified emulsified asphalt.
4. The detection method according to claim 3, wherein the common emulsified asphalt is anionic emulsified asphalt or cationic emulsified asphalt;
the heating starting temperature of the rapid moisture tester is room temperature, the end point temperature is 140 ℃, and the heating rate is 100 ℃/min.
5. The detection method according to claim 3, wherein the modified emulsified asphalt is SBS modified emulsified asphalt;
the heating starting temperature of the rapid moisture tester is room temperature, the end point temperature is 140 ℃, and the heating rate is 100 ℃/min.
6. The method of claim 1, wherein the sample size of the emulsified asphalt is 2g ± 0.2 g.
7. The method of claim 6, wherein the sample of emulsified asphalt has a thickness of 0.5 mm.
8. The detection method according to any one of claims 1 to 7, wherein the end point of heating is automatically determined by an instrument, and the heating time is 2 to 5 min.
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203772672U (en) * | 2014-02-26 | 2014-08-13 | 西安公路研究院 | Device for measuring content of asphalt in emulsified asphalt |
| CN106769634A (en) * | 2017-03-02 | 2017-05-31 | 北京市政路桥建材集团有限公司 | A kind of Asphalt Emulsion Evaporation Residue content quick determination method |
| CN206671110U (en) * | 2017-03-14 | 2017-11-24 | 华南理工大学 | A kind of experimental provision for emulsified asphalt evaporation |
| CN210071574U (en) * | 2019-04-25 | 2020-02-14 | 沈阳三鑫集团盘锦路用材料有限公司 | Experimental device for evaporation of emulsified asphalt |
| CN110879185A (en) * | 2019-12-06 | 2020-03-13 | 哈尔滨工业大学 | Emulsified asphalt solid content determination method based on low-temperature reduced pressure evaporation |
-
2020
- 2020-11-12 CN CN202011260521.2A patent/CN112630086A/en active Pending
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|---|---|---|---|---|
| CN203772672U (en) * | 2014-02-26 | 2014-08-13 | 西安公路研究院 | Device for measuring content of asphalt in emulsified asphalt |
| CN106769634A (en) * | 2017-03-02 | 2017-05-31 | 北京市政路桥建材集团有限公司 | A kind of Asphalt Emulsion Evaporation Residue content quick determination method |
| CN206671110U (en) * | 2017-03-14 | 2017-11-24 | 华南理工大学 | A kind of experimental provision for emulsified asphalt evaporation |
| CN210071574U (en) * | 2019-04-25 | 2020-02-14 | 沈阳三鑫集团盘锦路用材料有限公司 | Experimental device for evaporation of emulsified asphalt |
| CN110879185A (en) * | 2019-12-06 | 2020-03-13 | 哈尔滨工业大学 | Emulsified asphalt solid content determination method based on low-temperature reduced pressure evaporation |
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Application publication date: 20210409 |