CN218271829U - Modified asphalt density measuring device - Google Patents
Modified asphalt density measuring device Download PDFInfo
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- CN218271829U CN218271829U CN202221720733.9U CN202221720733U CN218271829U CN 218271829 U CN218271829 U CN 218271829U CN 202221720733 U CN202221720733 U CN 202221720733U CN 218271829 U CN218271829 U CN 218271829U
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Abstract
The application relates to the field of density measurement of modified asphalt, in particular to a device for measuring the density of modified asphalt, which comprises: a support frame; the heater is arranged on the support frame; the sample tube is arranged in the heater and used for containing the modified asphalt; the thermometer is arranged on the support frame, and the bottom measuring end is positioned in the sample tube; the tension meter is arranged on the support frame; and the steel ball is connected with the force measuring end of the tension meter, is positioned in the modified asphalt of the sample tube and is used for calculating the density of the modified asphalt. The method comprises the steps of heating a sample tube containing modified asphalt by using a heater, placing a steel ball in the modified asphalt of the sample tube, and calculating the density of the modified asphalt by using the Archimedes buoyancy principle and a mass and density formula, so that the problem that the density of the modified asphalt is measured by using a water medium in a high-temperature state is solved.
Description
Technical Field
The application relates to the field of density measurement of modified asphalt, in particular to a device for measuring the density of the modified asphalt.
Background
At present, the known modified asphalt density testing device refers to a testing method for semi-solid petroleum asphalt in GB/T8928-2008 & lt & ltDensity measurement for solid and semi-solid petroleum asphalt ], but the standard clearly specifies that the modified asphalt density testing device is not suitable for solid petroleum asphalt with relative density less than 1. Meanwhile, the standard provides that a pycnometer is used as a main measuring device, and the specific method is to measure the mass of equal volume of petroleum asphalt and water at a specified temperature (usually at normal temperature), and calculate the relative density and density of the petroleum asphalt according to a formula.
In addition, in the GB/T8928-2008 < Density measurement method for solid and semisolid petroleum asphalt >, a pycnometer device is used, which uses water as a medium, has high dependence on the water medium, and is only suitable for measuring the density of modified asphalt at normal temperature. When the temperature is higher than 100 ℃, the water medium reaches the boiling point and is in a boiling rolling state, the mass of water with a fixed volume cannot be measured, namely the mass of the water cannot be used for calibrating the volume of the modified asphalt, and therefore the density of the modified asphalt in a high-temperature state cannot be measured by adopting a pycnometer device.
Disclosure of Invention
In order to better determine the density of the modified asphalt in a high-temperature state, the application provides a modified asphalt density determination device, which utilizes a heater to heat a sample tube containing the modified asphalt, and enables a steel ball to be placed in the modified asphalt of the sample tube, and then utilizes the Archimedes buoyancy principle and a mass and density formula to calculate the density of the modified asphalt, thereby solving the problem that the water medium in the high-temperature state determines the density of the modified asphalt.
The application provides, adopt following technical scheme:
a modified asphalt density measuring device comprises:
a support frame;
the heater is arranged on the support frame;
the sample tube is arranged in the heater and used for containing the modified asphalt;
the thermometer is arranged on the support frame, and the bottom measuring end is positioned in the sample tube;
the tension meter is arranged on the support frame; and
and the steel ball is connected with the force measuring end of the tension meter, is positioned in the modified asphalt of the sample tube and is used for calculating the density of the modified asphalt.
Preferably, a high-temperature-resistant fine wire is arranged at the force measuring end of the tension meter, one end of the high-temperature-resistant fine wire is fixed with the force measuring end of the tension meter, and the other end of the high-temperature-resistant fine wire is fixed with the steel ball.
Preferably, the support frame comprises a bracket and a fixing rod fixed on the bracket, the heater is arranged on the bracket, the fixing rod is positioned right above the sample tube, and the thermometer and the tension meter are arranged on the fixing rod.
Preferably, the steel ball is a solid sphere.
Preferably, the thermometer is a mercury thermometer.
Preferably, the tension meter adopts a digital display tension meter.
Preferably, the heater adopts an intelligent digital display heating jacket.
To sum up, the application comprises the following beneficial technical effects:
1. this modified asphalt density survey device simple structure is practical and the operation of being convenient for, measures accurately, and is applicable in modified asphalt density survey under high temperature state, especially when being higher than the density that the aqueous medium can not measure modified asphalt when 100 degrees centigrade, uses this modified asphalt density survey device, not only to the survey of modified asphalt density comparatively accurate, utilizes this modified asphalt survey device very big time of having shortened modified asphalt density survey simultaneously.
Drawings
FIG. 1 is a schematic view of the entire structure of an assay device in an example of the present application.
Fig. 2 isbase:Sub>A schematic sectional view along the directionbase:Sub>A-base:Sub>A in fig. 1.
Description of the reference numerals: 1. a support frame; 11. a support; 12. fixing the rod; 2. a heater; 3. a sample tube; 4. a thermometer; 5. a tension meter; 6. a steel ball; 7. a high temperature resistant fine wire.
Detailed Description
The present application is described in further detail below with reference to the attached drawings.
The embodiment of the application discloses modified asphalt density measuring device.
Referring to fig. 1 and 2, the modified asphalt density measuring apparatus includes a holder 1, a heater 2, a sample tube 3, a thermometer 4, a tension gauge 5, and a steel ball 6.
Referring to fig. 1 and 2, specifically, the support frame 1 includes a support 11 and a fixing rod 12, the support 11 is placed on a workbench, the support 11 includes a fixing base and a supporting rod, the fixing base is placed on the workbench, an upper end face of the fixing base is a plane arranged along a horizontal direction, the supporting rod is vertically installed and fixed on the fixing base, the fixing rod 12 is vertically fixed on the supporting rod along the horizontal direction, and the fixing rod 12 is located right above the fixing base.
Referring to fig. 1 and 2, a heater 2 is placed at the upper end of a fixed base, preferably, the heater 2 can be an intelligent digital display heating jacket, a sample tube 3 is placed inside the intelligent digital display heater 2, modified asphalt is placed in the sample tube 3, the intelligent digital display heater 2 heats the modified asphalt in the sample tube 3, and the modified asphalt in the sample tube 3 can be heated to a temperature of more than 100 ℃.
Referring to fig. 1 and 2, a thermometer 4 is fixedly installed on a fixing rod 12, and the top of the thermometer 4 is inserted into the modified asphalt inside a sample tube 3, and the thermometer 4 measures the temperature of the modified asphalt, wherein the thermometer 4 is a mercury thermometer, and the mercury thermometer can bear a high temperature and measure the temperature accurately, and record the temperature of the modified asphalt measured by the thermometer 4.
Referring to fig. 1 and 2, the tension gauge 5 is fixed on the fixing rod 12, wherein the tension gauge 5 is digital display tension gauge 5, the steel ball 6 is fixed at the bottom of the digital display tension gauge 5, concretely, in order to make the steel ball 6 better measure the density of the modified asphalt, a high temperature resistant thin wire 7 is connected between the steel ball 6 and the digital display tension gauge 5, preferably, the high temperature resistant thin wire 7 is made of a high temperature resistant thin metal wire, and the diameter of the high temperature resistant thin metal wire is as thin as possible within a workable error range, so that the gravity of the high temperature resistant thin metal wire can be ignored, the steel ball 6 is a solid sphere, the mass and the volume of the steel ball 6 are measured in advance and recorded as m Steel ball And V Steel ball 。
When the device is used, the modified asphalt is placed in the sample tube 3, the sample tube 3 is heated by the heater 2, the temperature of the thermometer 4 is observed, when the temperature of the modified asphalt reaches the temperature to be measured, the heater 2 is adjusted to keep the temperature of the modified asphalt in the sample tube 3 constant, then the steel ball 6 is placed in the modified asphalt, the steel ball 6 is completely immersed in the modified asphalt, and the tension of the tension meter 5 on the steel ball 6 at the moment is recorded as F Pulling device The buoyancy of the modified asphalt against the steel ball 6 is recorded as F Floating body Thus, the density of the modified asphalt at this temperature is calculated as follows:
referring to FIGS. 1 and 2, since the steel balls 6 are kept in equilibrium in the modified asphalt, G Steel ball ＝F Floating body +F Pulling device And the gravity G of the steel ball 6 Steel ball ＝m Steel ball g, buoyancy F of the modified asphalt to the steel ball 6 Floating body ＝G Row board ＝ρ Liquid for medical purpose V Row board g, and the volume of the steel ball 6 is equal to the volume of the modified asphalt discharged from the steel ball 6, i.e. V Row board ＝V Steel ball The density of the modified asphalt at the temperature is measured through the formula, and rho can be obtained Liquid for medical purpose ＝(m Steel ball g-F Pulling device )/(V Steel ball g)。
Referring to fig. 1 and 2, the density of the modified asphalt at the temperature is repeatedly measured several times to complete the measurement of the density of the modified asphalt at the temperature, and when the density of the modified asphalt at another temperature is measured, the constant temperature after the heating of the modified asphalt is adjusted several times, and then the measurement is repeated several times to complete the measurement of the density of the modified asphalt at another temperature, and thus the density of the modified asphalt at different temperatures can be measured.
Specifically, the density (. Rho.) of a modified asphalt sample at 160 ℃ was measured 160℃ ) For example, the following steps are carried out:
the first step is as follows: assembling the modified asphalt density testing tool;
the second step is that: weigh 6 mass m of steel ball Steel ball (obtained by weighing with an analytical balance or the digital tensile machine) (V) Steel ball Known) and the temperature of the constant temperature oil bath pan is controlled to 160 ℃;
the third step: installing and fixing the steel ball 6, the mercury thermometer, the sample containing pipe and the digital display tension meter 5, paying attention to the fact that the position of the steel ball 6 is flush with the position of the mercury ball, and resetting the digital display tension meter 5 after fixing is finished;
the fourth step: hot melting a modified asphalt sample to a full flowing state under a certain temperature condition;
the fifth step: carefully pouring the modified asphalt sample into a sample containing pipe to ensure that the steel ball 6 is completely immersed into the sample containing pipe;
and a sixth step: keeping constant temperature state until reading of mercury thermometer is 160 deg.C, keeping constant within 1min, and reading stable value F of digital display tension meter 5 Pulling device ；
The seventh step: calculating to obtain the density, rho, of the modified asphalt sample at 160 DEG C 160℃ ＝(m Steel ball g-F Pulling device )/V Steel ball g。
In conclusion, the modified asphalt density testing device only needs 1 time of accurate weighing, 1 time of constant temperature oil bath and 1 time of reading of a tension meter 5, so that the temperature of the modified asphalt sample at 160 ℃ can be calculated, the consumed time is only within 1 hour, and the measuring period is shortened by nearly 2/3. In addition, the sample in the sample holding tube does not need to be replaced, and the density of the modified asphalt under other high-temperature conditions is continuously measured in a heating or cooling mode.
The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.
Claims (7)
1. A modified asphalt density measuring device is characterized by comprising:
a support frame;
the heater is arranged on the support frame;
the sample tube is arranged in the heater and used for containing the modified asphalt;
the thermometer is arranged on the support frame, and the bottom measuring end is positioned in the sample tube;
the tension meter is arranged on the support frame; and
and the steel ball is connected with the force measuring end of the tension meter, is positioned in the modified asphalt of the sample tube and is used for calculating the density of the modified asphalt.
2. The device for measuring the density of the modified asphalt according to claim 1, wherein a high-temperature-resistant fine wire is arranged on the force measuring end of the tension meter, one end of the high-temperature-resistant fine wire is fixed with the force measuring end of the tension meter, and the other end of the high-temperature-resistant fine wire is fixed with the steel ball.
3. The apparatus according to claim 1, wherein the holder comprises a holder and a fixing rod fixed to the holder, the heater is provided on the holder, the fixing rod is provided directly above the sample tube, and the thermometer and the tension gauge are provided on the fixing rod.
4. The apparatus for measuring the density of modified asphalt according to claim 1, wherein the steel ball is a solid sphere.
5. The apparatus for measuring the density of modified asphalt according to claim 1, wherein the thermometer is a mercury thermometer.
6. The apparatus for measuring the density of modified asphalt according to claim 1, wherein the tension meter is a digital display tension meter.
7. The device for measuring the density of the modified asphalt according to claim 1, wherein the heater adopts an intelligent digital display heating jacket.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221720733.9U CN218271829U (en) | 2022-07-05 | 2022-07-05 | Modified asphalt density measuring device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221720733.9U CN218271829U (en) | 2022-07-05 | 2022-07-05 | Modified asphalt density measuring device |
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| CN218271829U true CN218271829U (en) | 2023-01-10 |
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| CN202221720733.9U Active CN218271829U (en) | 2022-07-05 | 2022-07-05 | Modified asphalt density measuring device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116850886A (en) * | 2023-09-04 | 2023-10-10 | 太原东方雨虹建筑材料有限公司 | Coating tackifier production is with feeding device |
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2022
- 2022-07-05 CN CN202221720733.9U patent/CN218271829U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116850886A (en) * | 2023-09-04 | 2023-10-10 | 太原东方雨虹建筑材料有限公司 | Coating tackifier production is with feeding device |
| CN116850886B (en) * | 2023-09-04 | 2023-11-14 | 太原东方雨虹建筑材料有限公司 | Coating tackifier production is with feeding device |
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