CN106990143B - Method and system for measuring dielectric constant of asphalt mixture - Google Patents
Method and system for measuring dielectric constant of asphalt mixture Download PDFInfo
- Publication number
- CN106990143B CN106990143B CN201710084348.7A CN201710084348A CN106990143B CN 106990143 B CN106990143 B CN 106990143B CN 201710084348 A CN201710084348 A CN 201710084348A CN 106990143 B CN106990143 B CN 106990143B
- Authority
- CN
- China
- Prior art keywords
- asphalt mixture
- test piece
- electromagnetic wave
- time
- mixture test
- 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.)
- Expired - Fee Related
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/02—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance
- G01N27/22—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating capacitance
- G01N27/221—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating capacitance by investigating the dielectric properties
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Length-Measuring Devices Using Wave Or Particle Radiation (AREA)
Abstract
The invention provides a method and a system for measuring the dielectric constant of an asphalt mixture. The system includes a time acquisition unit and a dielectric constant calculation unit. The technical scheme of the invention can quickly, simply and accurately acquire the dielectric constant of the asphalt mixture to be measured, further determine the construction quality of the asphalt pavement through the dielectric constant, and provide an accurate and reliable data base for management and control of asphalt pavement construction.
Description
Technical Field
the invention relates to the field of asphalt pavement material detection, in particular to a method and a system for measuring the dielectric constant of an asphalt mixture.
Background
The dielectric constant is an important index of the material, and in the asphalt mixture, the dielectric constant is determined through measurement, so that the indexes of the compaction degree and the segregation of the asphalt mixture can be calculated, the construction quality of the asphalt pavement can be determined, and the management and control of the asphalt pavement construction can be realized.
at present, the dielectric constant of the asphalt mixture is mainly measured in the constructed asphalt pavement, and the electromagnetic wave of the asphalt pavement is obtained by mainly adopting radar to transmit and receive the electromagnetic wave and the dielectric constant of the asphalt mixture is obtained by combining core drilling sampling calculation. When the dielectric constant of the asphalt pavement of the highway is researched, the actual pavement dielectric constant can not be directly estimated and researched based on the consideration of measurement precision and the difficulty degree of actual operation, and the actual pavement dielectric constant can not be directly estimated and researched by core drilling and sampling, so that the original pavement structure of the road is damaged, and the traffic of the road is influenced. For this reason, dielectric constant correlation analysis using a laboratory pitch sample model is required.
the above contents are combined to know that the traditional asphalt pavement dielectric constant is difficult to measure, is unfavorable for the road structure, cannot realize better measurement on a single asphalt mixture, and is unfavorable for the quality control of the asphalt mixture.
disclosure of Invention
Aiming at the defects in the prior art, the invention provides the method and the system for measuring the dielectric constant of the asphalt mixture, which can quickly, simply and accurately obtain the dielectric constant of the asphalt mixture to be measured, further determine the construction quality of the asphalt pavement through the dielectric constant, and provide an accurate and reliable data base for the management and control of asphalt pavement construction.
In order to solve the technical problems, the invention provides the following technical scheme:
In one aspect, the invention provides a method for measuring the dielectric constant of an asphalt mixture, which comprises the following steps:
Respectively acquiring the time of the electromagnetic waves passing through the asphalt mixture test piece and the air within the same distance;
And acquiring the dielectric constant of the asphalt mixture in the asphalt mixture test piece according to the time of the electromagnetic wave passing through the asphalt mixture test piece and the air.
further, the method further comprises:
preparing a to-be-measured asphalt mixture into a cubic asphalt mixture test piece;
and recording the thickness of the asphalt mixture test piece.
Further, the method further comprises:
Respectively connecting a transmitting antenna and a receiving antenna to a radar host;
fixedly arranging the signal transmitting end of the transmitting antenna and the signal receiving end of the receiving antenna on a test plane in a face-to-face manner;
and recording the distance between the receiving antenna and the transmitting antenna.
further, the time that the electromagnetic waves pass through the asphalt mixture test piece and the air within the same distance is respectively acquired, and the method comprises the following steps:
Vertically placing the asphalt mixture test piece between the receiving antenna and the transmitting antenna, wherein the asphalt mixture test piece is parallel to the receiving antenna and the transmitting antenna respectively;
Acquiring the time of the electromagnetic wave sent by the transmitting antenna reaching the receiving antenna through the asphalt mixture test piece;
And taking the asphalt mixture test piece out of the space between the receiving antenna and the transmitting antenna, and acquiring the time of the electromagnetic wave sent by the transmitting antenna reaching the receiving antenna in the air.
Further, the acquiring time of the electromagnetic wave emitted by the transmitting antenna reaching the receiving antenna through the asphalt mixture test piece includes:
And after the electromagnetic wave sent by the transmitting antenna passes through the asphalt mixture test piece and reaches the receiving antenna, acquiring the total time of the electromagnetic wave recorded by the radar host machine after passing through the asphalt mixture test piece.
Further, the acquiring the time when the electromagnetic wave emitted by the transmitting antenna reaches the receiving antenna in the air includes:
and acquiring the total time of the electromagnetic wave recorded by the radar host machine passing through the air after the electromagnetic wave sent by the transmitting antenna reaches the receiving antenna in the air.
further, the obtaining of the dielectric constant of the asphalt mixture in the asphalt mixture test piece according to the time of the electromagnetic wave passing through the asphalt mixture test piece and the air includes:
And substituting the time of the electromagnetic waves passing through the asphalt mixture test piece and the air into the following formula I, and calculating to obtain the dielectric constant epsilon of the asphalt mixture in the asphalt mixture test piece:
wherein u is the magnetic permeability; t' is the total time of the electromagnetic wave passing through the asphalt mixture test piece; t is the total time of the electromagnetic wave recorded by the radar host machine passing through the air; c is the propagation velocity of the electromagnetic wave; and h is the thickness of the asphalt mixture test piece.
Further, the connecting the transmitting antenna and the receiving antenna to the radar host respectively includes:
And connecting the cable for the transmitting antenna to a first port of the radar host, and connecting the cable for the receiving antenna to a second port of the radar host.
further, vertically placing the asphalt mixture test piece between the receiving antenna and the transmitting antenna comprises:
And vertically placing the asphalt mixture test piece at the center between the receiving antenna and the transmitting antenna.
in another aspect, the present invention further provides a system for measuring the dielectric constant of an asphalt mixture, the system comprising:
The time acquisition unit is used for respectively acquiring the time of the electromagnetic waves passing through the asphalt mixture test piece and the air within the same distance;
and the dielectric constant calculation unit is used for acquiring the dielectric constant of the asphalt mixture in the asphalt mixture test piece according to the time of the electromagnetic wave passing through the asphalt mixture test piece and the air.
According to the technical scheme, the method and the system for measuring the dielectric constant of the asphalt mixture are characterized in that the dielectric constant of the asphalt mixture in the asphalt mixture test piece is obtained by respectively obtaining the time of the electromagnetic wave passing through the asphalt mixture test piece and the air within the same distance and obtaining the dielectric constant of the asphalt mixture in the asphalt mixture test piece according to the time of the electromagnetic wave passing through the asphalt mixture test piece and the air. The system includes a time acquisition unit and a dielectric constant calculation unit. The technical scheme of the invention can quickly, simply and accurately acquire the dielectric constant of the asphalt mixture to be measured, further determine the construction quality of the asphalt pavement through the dielectric constant, and provide an accurate and reliable data base for management and control of asphalt pavement construction.
drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic flow chart of a method for measuring the dielectric constant of an asphalt mixture according to the present invention;
FIG. 2 is a schematic flow chart of step A00 further included in the measurement method of the present invention;
FIG. 3 is a schematic flow chart of step B00 further included in the measurement method of the present invention;
FIG. 4 is a schematic flow chart of step 100 of the measurement method of the present invention;
FIG. 5 is a schematic diagram of a measuring device in an exemplary embodiment of the invention;
FIG. 6 is a schematic structural diagram of a system for measuring the dielectric constant of the asphalt mixture according to the present invention.
Detailed Description
in order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
the embodiment of the invention provides a specific implementation mode of a method for measuring the dielectric constant of an asphalt mixture. Referring to fig. 1, the measurement method specifically includes the following steps:
Step 100: and respectively acquiring the time of the electromagnetic waves passing through the asphalt mixture test piece and the air within the same distance.
in this step, a measuring device consisting of a radar host, a transmitting antenna and a receiving antenna measures the electromagnetic waves of the asphalt mixture test piece, and records the time of the electromagnetic waves passing through the asphalt mixture test piece and the time of the electromagnetic waves passing through the air within the same distance.
step 200: and acquiring the dielectric constant of the asphalt mixture in the asphalt mixture test piece according to the time of the electromagnetic waves passing through the asphalt mixture test piece and the air.
in the step, the dielectric constant of the asphalt mixture in the asphalt mixture test piece is obtained according to the time of the electromagnetic wave passing through the asphalt mixture test piece recorded by the measuring device and the time of the electromagnetic wave passing through the air within the same distance.
From the above description, the embodiment of the invention can quickly, simply and accurately obtain the dielectric constant of the asphalt mixture to be measured, and further can determine the construction quality of the asphalt pavement through the dielectric constant, thereby providing an accurate and reliable data base for management and control of asphalt pavement construction.
the second embodiment of the present invention provides a specific implementation manner of step a00 before step 100 in the above-mentioned measurement method. Referring to fig. 2, the step a00 specifically includes the following steps:
step A01: preparing the asphalt mixture to be measured into a cubic asphalt mixture test piece.
Step A02: and recording the thickness of the asphalt mixture test piece.
from the above description, it can be known that the embodiment of the present invention prepares the asphalt mixture to be measured into the cube-shaped asphalt mixture test piece, which is convenient for performing the electromagnetic wave test on the asphalt mixture and ensures the accuracy of the test process.
The third embodiment of the present invention provides a specific implementation manner of step B00 before step 200 in the above measurement method. Referring to fig. 3, the step B00 specifically includes the following steps:
step B01: and respectively connecting the transmitting antenna and the receiving antenna to the radar host.
In this step, the transmitting antenna cable is connected to a first port of the radar host, and the receiving antenna cable is connected to a second port of the radar host.
Step B02: and fixedly arranging the signal transmitting end of the transmitting antenna and the signal receiving end of the receiving antenna on the test plane in a face-to-face manner.
step B03: and recording the distance between the receiving antenna and the transmitting antenna.
From the above description, it can be seen that the embodiments of the present invention are used for reliably connecting and obtaining a measurement device before measurement, and the accuracy of subsequent measurement results is ensured.
The fourth embodiment of the present invention provides a specific implementation manner of step 100 in the above-described measurement method. Referring to fig. 4, the step 100 specifically includes the following steps:
step 101: and vertically placing the asphalt mixture test piece between the receiving antenna and the transmitting antenna, wherein the asphalt mixture test piece is parallel to the receiving antenna and the transmitting antenna respectively.
In the step, the asphalt mixture test piece is vertically placed in the center between the receiving antenna and the transmitting antenna.
Step 102: and acquiring the time of the electromagnetic wave sent by the transmitting antenna reaching the receiving antenna through the asphalt mixture test piece.
In this step, after the electromagnetic wave emitted by the transmitting antenna passes through the asphalt mixture test piece and reaches the receiving antenna, the total time of the electromagnetic wave recorded by the radar host machine passing through the asphalt mixture test piece is obtained.
Step 103: and taking the asphalt mixture test piece out from between the receiving antenna and the transmitting antenna, and acquiring the time of the electromagnetic wave sent by the transmitting antenna reaching the receiving antenna in the air.
in this step, after the electromagnetic wave emitted by the transmitting antenna reaches the receiving antenna in the air, the total time of the electromagnetic wave passing through the air recorded by the radar host is obtained.
From the above description, the embodiment of the invention can quickly and accurately acquire the time of the electromagnetic wave passing through the asphalt mixture test piece and the air within the same distance, and provides an accurate data base for acquiring the dielectric constant of the asphalt mixture.
An embodiment of the present invention provides a specific implementation manner of step 200 in the above measurement method, where step 200 specifically includes the following steps:
And substituting the time of the electromagnetic waves passing through the asphalt mixture test piece and the air into the following formula I, and calculating to obtain the dielectric constant epsilon of the asphalt mixture in the asphalt mixture test piece:
Wherein u is the magnetic permeability; t' is the total time of the electromagnetic wave passing through the asphalt mixture test piece; t is the total time of the electromagnetic wave recorded by the radar host machine passing through the air; c is the propagation velocity of the electromagnetic wave; and h is the thickness of the asphalt mixture test piece.
For further explaining the scheme, the invention also provides a specific application example of the method for measuring the dielectric constant of the asphalt mixture, and the method specifically comprises the following steps:
the method for measuring the dielectric constant of the asphalt mixture based on the radar technology comprises the steps of installing a radar host, a transmitting antenna, a receiving antenna and a connecting cable into a measuring device, placing an asphalt mixture test piece between the transmitting antenna and the receiving antenna, determining the time difference of electromagnetic waves passing through air and the asphalt mixture test piece by measuring the time from the signal transmission to the signal reception, and calculating to obtain the dielectric constant of the asphalt mixture. The method comprises the following specific steps:
(1) The parts of the testing device are connected as shown in fig. 5 to form the testing device for the dielectric constant of the asphalt mixture, and the positions of the transmitting antenna and the receiving antenna are fixed, wherein the distance between the transmitting antenna and the receiving antenna is d.
The distance between the transmitting antenna and the receiving antenna is not movable after the test is carried out.
(2) the asphalt mixture to be measured is selected, and the asphalt mixture is prepared into test pieces with fixed length of length, width and height.
(3) And (3) opening the host, controlling the radar host to send out a signal from the port 1, wherein the time for the transmitting antenna to receive the signal is t1, the time for the transmitting antenna to send out electromagnetic waves to the receiving antenna is t2, and the time for the receiving antenna to send the signal to the port 2 is t 3. The time T of the signal from the port 1 to the port 2 can be measured by the radar host, and is the sum of T1, T2 and T3.
(4) The prepared asphalt mixture test piece is placed between a transmitting antenna and a receiving antenna, a radar host is controlled to send out signals from a port 1, the time for the transmitting antenna to receive the signals is t1, the time for the transmitting antenna to send electromagnetic waves to the receiving antenna is t4, and the time for the receiving antenna to send the signals to a port 2 is t 3. After the asphalt mixture test piece is placed, the radar host can measure the time T 'from the port 1 to the port 2, wherein the T' is the sum of T1, T4 and T3.
(5) and calculating the time difference between signal transmission and signal reception when the asphalt mixture test piece is placed or not placed between the transmitting antenna and the receiving antenna, and calculating according to the following formula to obtain the dielectric constant of the asphalt mixture.
according to the test procedure, the time from the transmitting antenna to the receiving antenna of the electromagnetic wave is t2 when the asphalt mixture test piece is not placed, and the time from the transmitting antenna to the receiving antenna of the electromagnetic wave is t4 when the asphalt mixture test piece is placed. the calculation of t2 and t4 is shown in equations 2 and 3.
t2 ═ d/c (formula 2)
In the formula: d is the distance between the transmitting antenna and the receiving antenna;
c is the propagation speed of the electromagnetic wave in the air;
h is the thickness of the test piece;
u-is magnetic conductivity, and generally takes 1;
Epsilon-is the dielectric constant of the asphalt mixture to be measured.
Wherein, T4-T2 ═ T' -T ═ T (T1+ T4+ T3) - (T1+ T2+ T3)
therefore, the dielectric constant of the asphalt mixture can be calculated according to the formulas 2 and 3 and is shown as the formula 4.
In one embodiment, the determination of the dielectric constant of the AC-13C asphalt mixture is taken as an example for further explanation:
(1) According to fig. 5, the radar host, the transmitting antenna and the receiving antenna are connected, the positions of the transmitting antenna and the receiving antenna are fixed, and the distance between the transmitting antenna and the receiving antenna is measured to be 1 m.
(2) Preparing a bituminous mixture test piece, and preparing the test piece into a test piece with the length, width and height of 400mm x 50mm respectively, so as to determine that the test thickness of the test piece is 50 mm.
(3) And no asphalt mixture test piece to be tested is placed in the transmitting antenna and the receiving antenna, a radar host is used for controlling signals, and the time T from the port 1 to the port 2 of the signals is 23.347 ns.
(4) And placing the asphalt mixture test piece to be tested between the transmitting antenna and the receiving antenna. The time T' from port 1 to port 2 of the signal is measured to be 23.576ns by the radar host through the radar host control signal.
The difference between the time difference T' when the electromagnetic wave passes through the asphalt mixture test piece to be measured and the time difference T when the electromagnetic wave passes through the air is calculated, and the calculation result is 0.229 ns.
Knowing that the thickness of the asphalt mixture test piece to be measured is 0.05m, the propagation speed of electromagnetic waves is 0.3m/ns, and calculating the dielectric constant of the asphalt mixture according to a formula 4.
The dielectric constant of the AC-13C asphalt mixture was thus determined to be 5.64.
From the above description, the embodiment of the invention can quickly, simply and accurately obtain the dielectric constant of the asphalt mixture to be measured, and further can determine the construction quality of the asphalt pavement through the dielectric constant, thereby providing an accurate and reliable data base for management and control of asphalt pavement construction.
the sixth embodiment of the present invention provides a specific implementation manner of a system for measuring a dielectric constant of an asphalt mixture, which is capable of implementing the above measurement method, and referring to fig. 6, the system specifically includes the following steps:
and the time acquisition unit 10 is used for respectively acquiring the time of the electromagnetic waves passing through the asphalt mixture test piece and the air within the same distance.
And the dielectric constant calculation unit 20 is configured to obtain the dielectric constant of the asphalt mixture in the asphalt mixture test piece according to the time when the electromagnetic wave passes through the asphalt mixture test piece and the air.
From the above description, the embodiment of the invention can quickly, simply and accurately obtain the dielectric constant of the asphalt mixture to be measured, further calculate the indexes of the compaction degree and the segregation of the asphalt mixture, determine the construction quality of the asphalt pavement, and realize the management control of the asphalt pavement construction.
the above examples are only for illustrating the technical solutions of the present invention, and not for limiting the same; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (9)
1. A method for measuring the dielectric constant of an asphalt mixture is characterized by comprising the following steps:
Respectively acquiring the time of the electromagnetic waves passing through the asphalt mixture test piece and the air within the same distance;
determining the time difference of the electromagnetic wave passing through the air and the asphalt mixture according to the time of the electromagnetic wave passing through the asphalt mixture test piece and the air, and obtaining the dielectric constant of the asphalt mixture in the asphalt mixture test piece according to the time difference;
And substituting the time of the electromagnetic waves passing through the asphalt mixture test piece and the air into the following formula I, and calculating to obtain the dielectric constant epsilon of the asphalt mixture in the asphalt mixture test piece:
Wherein u is the magnetic permeability; t' is the total time of the electromagnetic wave passing through the asphalt mixture test piece; t is the total time of the electromagnetic wave recorded by the radar host machine passing through the air; c is the propagation velocity of the electromagnetic wave; and h is the thickness of the asphalt mixture test piece.
2. The method of claim 1, further comprising:
Preparing a to-be-measured asphalt mixture into a cubic asphalt mixture test piece;
And recording the thickness of the asphalt mixture test piece.
3. The method of claim 2, further comprising:
Respectively connecting a transmitting antenna and a receiving antenna to a radar host;
fixedly arranging the signal transmitting end of the transmitting antenna and the signal receiving end of the receiving antenna on a test plane in a face-to-face manner;
And recording the distance between the receiving antenna and the transmitting antenna.
4. The method according to claim 3, wherein the step of respectively acquiring the time of the electromagnetic waves passing through the asphalt mixture test piece and the air within the same distance comprises the following steps:
vertically placing the asphalt mixture test piece between the receiving antenna and the transmitting antenna, wherein the asphalt mixture test piece is parallel to the receiving antenna and the transmitting antenna respectively;
Acquiring the time of the electromagnetic wave sent by the transmitting antenna reaching the receiving antenna through the asphalt mixture test piece;
And taking the asphalt mixture test piece out of the space between the receiving antenna and the transmitting antenna, and acquiring the time of the electromagnetic wave sent by the transmitting antenna reaching the receiving antenna in the air.
5. the method according to claim 4, wherein the obtaining of the time of the electromagnetic wave emitted by the transmitting antenna reaching the receiving antenna through the asphalt mixture test piece comprises:
And after the electromagnetic wave sent by the transmitting antenna passes through the asphalt mixture test piece and reaches the receiving antenna, acquiring the total time of the electromagnetic wave recorded by the radar host machine after passing through the asphalt mixture test piece.
6. the method of claim 5, wherein the obtaining the time when the electromagnetic wave emitted by the transmitting antenna reaches the receiving antenna in the air comprises:
and acquiring the total time of the electromagnetic wave recorded by the radar host machine passing through the air after the electromagnetic wave sent by the transmitting antenna reaches the receiving antenna in the air.
7. The method of claim 3, wherein the connecting the transmitting antenna and the receiving antenna to the radar host respectively comprises:
And connecting the cable for the transmitting antenna to a first port of the radar host, and connecting the cable for the receiving antenna to a second port of the radar host.
8. the method of claim 4, wherein the vertically placing the asphalt mixture test piece between the receiving antenna and the transmitting antenna comprises:
and vertically placing the asphalt mixture test piece at the center between the receiving antenna and the transmitting antenna.
9. A system for measuring the dielectric constant of an asphalt mixture, the system comprising:
The time acquisition unit is used for respectively acquiring the time of the electromagnetic waves passing through the asphalt mixture test piece and the air within the same distance;
The dielectric constant calculation unit is used for determining the time difference of the electromagnetic wave passing through the air and the asphalt mixture time according to the time of the electromagnetic wave passing through the asphalt mixture test piece and the air, and acquiring the dielectric constant of the asphalt mixture in the asphalt mixture test piece according to the time difference;
and substituting the time of the electromagnetic waves passing through the asphalt mixture test piece and the air into the following formula I, and calculating to obtain the dielectric constant epsilon of the asphalt mixture in the asphalt mixture test piece:
wherein u is the magnetic permeability; t' is the total time of the electromagnetic wave passing through the asphalt mixture test piece; t is the total time of the electromagnetic wave recorded by the radar host machine passing through the air; c is the propagation velocity of the electromagnetic wave; and h is the thickness of the asphalt mixture test piece.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710084348.7A CN106990143B (en) | 2017-02-16 | 2017-02-16 | Method and system for measuring dielectric constant of asphalt mixture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710084348.7A CN106990143B (en) | 2017-02-16 | 2017-02-16 | Method and system for measuring dielectric constant of asphalt mixture |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106990143A CN106990143A (en) | 2017-07-28 |
| CN106990143B true CN106990143B (en) | 2019-12-06 |
Family
ID=59414175
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710084348.7A Expired - Fee Related CN106990143B (en) | 2017-02-16 | 2017-02-16 | Method and system for measuring dielectric constant of asphalt mixture |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106990143B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108931562B (en) * | 2018-06-15 | 2021-01-19 | 武汉理工大学 | Nondestructive testing method for dielectric constant of large-size uneven mixture |
| CN114264884B (en) * | 2020-09-16 | 2023-11-10 | Oppo广东移动通信有限公司 | Dielectric constant measuring method and device |
| CN112578005A (en) * | 2020-11-25 | 2021-03-30 | 武汉理工大学 | Asphalt mixture quality evaluation method for quantifying relative humidity factor |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001141819A (en) * | 1999-11-12 | 2001-05-25 | Constec Engi Co | Method and apparatus for measuring depth of buried matter |
| CN101915771A (en) * | 2010-09-03 | 2010-12-15 | 中国科学院南京土壤研究所 | Method for determining sandy soil moisture content based on low-frequency ground penetrating radar ground method |
| CN101957404A (en) * | 2009-07-20 | 2011-01-26 | 中国科学院遥感应用研究所 | Microwave measurement method of dielectric constant of grain pile |
| CN105676000A (en) * | 2016-01-08 | 2016-06-15 | 中国神华能源股份有限公司 | Transmission-type CT ground penetrating radar-based measurement method for measuring soil relative dielectric constant |
-
2017
- 2017-02-16 CN CN201710084348.7A patent/CN106990143B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001141819A (en) * | 1999-11-12 | 2001-05-25 | Constec Engi Co | Method and apparatus for measuring depth of buried matter |
| CN101957404A (en) * | 2009-07-20 | 2011-01-26 | 中国科学院遥感应用研究所 | Microwave measurement method of dielectric constant of grain pile |
| CN101915771A (en) * | 2010-09-03 | 2010-12-15 | 中国科学院南京土壤研究所 | Method for determining sandy soil moisture content based on low-frequency ground penetrating radar ground method |
| CN105676000A (en) * | 2016-01-08 | 2016-06-15 | 中国神华能源股份有限公司 | Transmission-type CT ground penetrating radar-based measurement method for measuring soil relative dielectric constant |
Non-Patent Citations (1)
| Title |
|---|
| 透射式探地雷达探测土壤含水率;武彦斌 等;《农业工程学报》;20140930;第30卷(第17期);第126-127页第1-2.2节 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106990143A (en) | 2017-07-28 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106990143B (en) | Method and system for measuring dielectric constant of asphalt mixture | |
| US20090212789A1 (en) | Modified tdr method and apparatus for suspended solid concentration measurement | |
| CN105242316B (en) | The live acoustic wave propagation velocity measurement system of seabottom geology investigation | |
| CN111705856B (en) | Numerical analysis-based foundation pit settlement monitoring system and prediction method | |
| CN101819262B (en) | Frequency-conversion ferromagnetic resonance measuring system | |
| CN103675920A (en) | Nondestructive test method for depth and horizontal position of hidden crack of road base | |
| CN106940370A (en) | Asphalt Pavement Compaction Degree Index detection method, apparatus and system | |
| CN106679694B (en) | The air-air response Time delay measurement Precision calibration device and method of tacan beacon simulator | |
| CN103091342B (en) | Method for carrying out CT scanning analysis processing upon rock core sample | |
| CN104914115A (en) | Soil moisture content tester and testing method thereof | |
| CN110470871B (en) | Single-port multi-state-based material electromagnetic parameter testing device and method | |
| CN103995147B (en) | A kind of Data Post Processing System being applicable to acoustic Doppler velocimetry and application | |
| CN209486181U (en) | A kind of system of accurate measurement frequency | |
| US8461851B2 (en) | Systems for transverse electromagnetic mode in-situ soil testing | |
| CN104931943A (en) | Metering method and metering device for ground penetrating radar | |
| CN105486757B (en) | A kind of portable defectoscope defect positioning method | |
| Liu et al. | Automatic pavement layer identification with multichannel ground penetrating radar at traffic speed | |
| CN209387591U (en) | Asphalt Pavement Compaction Degree Index continuous detecting system | |
| CN105509871A (en) | Self-calibration device and method applied to vibration sensor | |
| Megali et al. | Assessing reliability and potentiality of nonnuclear portable devices for asphalt mixture density measurement | |
| Muller et al. | Optimising a modified free-space permittivity characterisation method for civil engineering applications | |
| CN104931782A (en) | Remote asynchronous power frequency signal phase difference measurement method and system | |
| CN113917451A (en) | Method, device and system for detecting condition of asphalt pavement of expressway | |
| CN105239999A (en) | Method for quickly determining downhole transmitting power of multi-frequency nuclear magnetic resonance logger | |
| CN109000615A (en) | A kind of slope measuring method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20191206 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |