CN103900934B - A kind of characterize water method of dispersal behavior in Colophonium - Google Patents
A kind of characterize water method of dispersal behavior in Colophonium Download PDFInfo
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- CN103900934B CN103900934B CN201310655724.5A CN201310655724A CN103900934B CN 103900934 B CN103900934 B CN 103900934B CN 201310655724 A CN201310655724 A CN 201310655724A CN 103900934 B CN103900934 B CN 103900934B
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- colophonium
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Abstract
The present invention is a kind of to measure the method that water spreads in Colophonium, utilize the characteristic that water and asphalt dielectric constant differ greatly, when water spreads in Colophonium, the dielectric constant of Colophonium changes, and its electric capacity also changes, and measures water diffusion in Colophonium by Colophonium capacitance variation.Wherein test voltage is in the range of 100mV to 200mV, and rate of scanning is in the range of 300KHz to 9MHz.
Description
Technical field
The present invention relates to a kind of characterize water method of dispersal behavior in Colophonium, belong to Material Field.
Background technology
Characterize water method of dispersal behavior in Colophonium and mainly have mass method, infrared spectrum-ATR and Diffusion-Through method.
Mass method is to utilize the change of the asphalt membrane quality being soaked in water to be measured to characterize water dispersal behavior in Colophonium, first that Colophonium is uniform during test
Ground is coated with on the glass sheet, forms one layer of asphalt membrane, weighs and record its quality, and the sheet glass that then will be covered with asphalt membrane is put in water to be measured, often
Between take out sheet glass at regular intervals, dry up testing sample, weigh and record its quality, thus obtain being soaked in the mass change of the asphalt membrane of water
Curve.Though the method is simple to operate, but wanting constantly to take out from water measures sample and dries up, in cut off the water supply the diffusion process in Colophonium, it is impossible to true
Real reflection water dispersal behavior process in Colophonium, and Colophonium also has some solable matters and enters in water, the mass change of asphalt membrane is not
Can truly reflect water dispersal behavior wherein.
Infrared spectrum-ATR utilizes the stretching vibration peak of hydroxyl in hydrone to be wave number 3000cm in infrared spectrum-1-3650cm-1The suction at place
Receiving peak, the intensity of hydroxyl stretching vibration peak can increase with hydrone in Colophonium and strengthen, and the intensity measuring different time points hydroxyl stretching vibration peak is come anti-
Reflect water diffusion in Colophonium.The method test result is relatively more accurate, but requires the very thin thickness of asphalt film in test process, to asphalt filmthickness
Degree requires higher, and the preparation difficulty of asphalt film is relatively big, and test process needs special test equipment and needs long-time engaged test equipment, equipment profit
The lowest by rate.
Diffusion-Through method is to utilize water and the interface of Asphalt Contactor and Colophonium to be internally formed material concentration gradient, so that water is diffused into drip
In green grass or young crops, the ion in water is remained in Colophonium space by the effect of asphalt component, and continues to absorb moisture, forms permeable layer, a lot of in permeable layer
Cavity structure containing ion causes the entrance of the volumetric expansion of Colophonium, beneficially hydrone, and then makes water-soluble component the oozing out with water in Colophonium
And constantly separate out.The content of the radioactive indicator separated out by mensuration characterizes water-soluble component amount of precipitation in Colophonium, and then characterizes water in Colophonium
Dispersal behavior.This method need to use radioelement as tracer, inconvenient and have that cost is high, have the problems such as pollution to environment during operation.
Summary of the invention
Actual response water dispersal behavior in Colophonium, the preparation of asphalt film operation, equipment utilization can not be difficult in order to overcome that said method exists
Rate is low, use tracer cost height to be not easy to operation and environmental pollution problem, and the present invention provides a kind of brand-new sign water dispersal behavior in Colophonium
Method, it is possible to true reflection water diffusion process in Colophonium, easy to operate, equipment efficiency of usage is high, pollution-free and with low cost.
The purpose of the present invention is realized by techniques below scheme:
Using the electrically-conductive backing plate of surface covering asphalt film as working electrode, using carbon-point as to electrode, using water as electrolyte, by described work electricity
Pole, electrode and electrolyte are formed test electrode system；
Test electrode system is connected with electrochemical workstation, sets test voltage and the rate of scanning of electrochemical workstation, read at interval of a period of time
Power taking chem workstation test the data obtained, obtains Nyquist figure and Bode schemes；
According to obtaining Nyquist figure and Bode figure in the shape of different time, select immersion initial stage organic coating metal system equivalent-circuit model or
Soak the equivalent-circuit model of organic coating metal system in mid-term, use fitting software that the data of Nyquist figure and Bode figure are fitted, obtain
The capacitance of Colophonium during different soak time；
Draw Colophonium capacitance versus time curve according to the capacitance obtained, water dispersal behavior in Colophonium can be characterized.
As the improvement to technical solution of the present invention, electrically-conductive backing plate uses metal basal board.
As the further improvement to technical solution of the present invention, metal basal board is in aluminium sheet, copper coin, corrosion resistant plate, aluminium alloy plate, steel plate and zine plate
Any one.
As the improvement to technical solution of the present invention, surface covers the electrically-conductive backing plate of asphalt film and uses following methods to make, and is heated also by electrically-conductive backing plate
Be maintained at 60 DEG C 100 DEG C, Colophonium is heated to 60 DEG C 80 DEG C be coated on heating after electrically-conductive backing plate, with blade Colophonium is uniformly coated with and scrapes in conduction
Substrate.
As the improvement to technical solution of the present invention, electrically-conductive backing plate smooth surface.
As the improvement to technical solution of the present invention, heat water to boiling before test and be then cooled to room temperature.
As the improvement to technical solution of the present invention, test voltage is set as any value between 100mV to 200mV, preferably 150mV.
As the improvement to technical solution of the present invention, rate of scanning is set as 300KHz to 9MHz.
Technical solution of the present invention has the advantages that
The present invention utilizes the feature that water and asphalt dielectric constant differ greatly, and water is diffused in Colophonium the electrochemical characteristic of Colophonium afterwards and can occur accordingly
Change, is i.e. spread with water by Colophonium capacitance and occurs respective change to characterize water dispersal behavior in Colophonium, therefore technical scheme
Go for any two difference in dielectric constant material bigger, a kind of and can be spread to the situation in another kind of material.
Technical solution of the present invention need not weigh asphalt quality after soaking, it is possible to avoids water diffusion process to interrupt with water-soluble material in Colophonium survey
The impact of test result, it is ensured that measurement result true and accurately.
Technical solution of the present invention is the highest to the thickness requirement of asphalt film, makes asphalt film easy and simple to handle.
Technical solution of the present invention utilizes self-built test pond and Conventional electrochemical work station, it is not necessary to use radioactive indicator, pollution-free, low cost.
The connection of technical solution of the present invention electrochemical workstation is simple, without taking sensing equipment for a long time when convenient disassembly and test, can be effectively improved
Utilization rate of equipment and installations.
Accompanying drawing explanation
Fig. 1 is water dispersal behavior test schematic diagram in Colophonium.
Fig. 2 is the equivalent-circuit model A of immersion initial stage organometallic coatings system.
Fig. 3 is the equivalent-circuit model B soaking organometallic coatings system in mid-term.
Fig. 4 is that test tap water dispersal behavior gained Nyquist figure and Bode in a Colophonium scheme, and test voltage 100mV tests rate of scanning
300KHz-9MHz。
Fig. 5 is matching gained Colophonium capacitance variation curve chart, test voltage 100mV, tests rate of scanning 300KHz-9MHz.
Fig. 6 is that test tap water dispersal behavior gained Nyquist figure and Bode in a Colophonium scheme, and test voltage 150mV tests rate of scanning
300KHz-9MHz。
Fig. 7 is matching gained Colophonium capacitance variation curve chart, test voltage 150mV, tests rate of scanning 300KHz-9MHz.
Fig. 8 is that test tap water dispersal behavior gained Nyquist figure and Bode in a Colophonium scheme, and test voltage 200mV tests rate of scanning
300KHz-9MHz。
Fig. 9 is matching gained Colophonium capacitance variation curve chart, test voltage 200mV, tests rate of scanning 300KHz-9MHz.
Figure 10 is that test tap water dispersal behavior gained Nyquist figure and Bode in b Colophonium scheme, and test voltage 100mV tests rate of scanning
300KHz-9MHz。
Figure 11 is matching gained Colophonium capacitance variation curve chart, test voltage 100mV, tests rate of scanning 300KHz-9MHz.
Figure 12 is that test tap water dispersal behavior gained Nyquist figure and Bode in b Colophonium scheme, and test voltage 150mV tests rate of scanning
300KHz-9MHz。
Figure 13 is matching gained Colophonium capacitance variation curve chart, test voltage 150mV, tests rate of scanning 300KHz-9MHz.
Figure 14 is that test tap water dispersal behavior gained Nyquist figure and Bode in b Colophonium scheme, and test voltage 200mV tests rate of scanning
300KHz-9MHz。
Figure 15 is matching gained Colophonium capacitance variation curve chart, test voltage 200mV, tests rate of scanning 300KHz-9MHz.
Figure 16 is that test tap water dispersal behavior gained Nyquist figure and Bode in c Colophonium scheme, and test voltage 100mV tests rate of scanning
300KHz-9MHz。
Figure 17 is matching gained Colophonium capacitance variation curve chart, test voltage 100mV, tests rate of scanning 300KHz-9MHz.
Figure 18 is that test tap water dispersal behavior gained Nyquist figure and Bode in c Colophonium scheme, and test voltage 150mV tests rate of scanning
300KHz-9MHz。
Figure 19 is matching gained Colophonium capacitance variation curve chart, test voltage 150mV, tests rate of scanning 300KHz-9MHz.
Figure 20 is that test tap water dispersal behavior gained Nyquist figure and Bode in c Colophonium scheme, and test voltage 200mV tests rate of scanning
300KHz-9MHz。
Figure 21 is matching gained Colophonium capacitance variation curve chart, test voltage 200mV, tests rate of scanning 300KHz-9MHz.
Detailed description of the invention
The present invention utilizes the feature that water and asphalt dielectric constant differ greatly, and after water is diffused in Colophonium, the dielectric constant of Colophonium changes,
Its capacitance also occurs to change accordingly, is constantly diffused in Colophonium along with water, and the capacitance of Colophonium the most constantly changes, by immersion
The same Colophonium electrochemical characteristic of the different time in water is tested, and utilizes the change curve that Colophonium capacitance spreads with water to characterize water at Colophonium
In dispersal behavior.
As a example by tri-kinds of Colophoniumes of a, b, c and water, the detailed description of the invention of the present invention is described separately below.
Embodiment one
According to the test pool structure shown in Fig. 1, select a block length 20cm, wide 10cm thin aluminium sheet as substrate, electrochemical workstation can be made
The normal electrochemical signals catching asphalt sample, it is also possible to substitute aluminium sheet with other metal basal boards such as copper coin, zine plate, corrosion resistant plate, steel plates.Aluminium sheet
Surface should be smooth so that asphalt membrane thickness is uniform, above-mentioned aluminium sheet is placed on panel heater, heat and keep its temperature at 60 DEG C so that
Colophonium has preferable mobility in surface of aluminum plate, takes appropriate a Colophonium and is heated to 80 DEG C, is applied on above-mentioned aluminium sheet by the Colophonium after above-mentioned heating,
It is coated with to scrape by Colophonium uniformly with blade (such as doctor) and on aluminium sheet, forms asphalt membrane smooth, in uniform thickness, by above-mentioned covering a asphalt film
Aluminium sheet non-shock chilling be placed in backing plate to room temperature, the aluminium sheet of above-mentioned covering asphalt membrane as working electrode, vial is placed on asphalt membrane, vial and
Using sealing ring to ensure to be in close contact between vial and asphalt membrane between asphalt membrane, water is cooled to room temperature through boiling, and is placed in vial, carbon
Rod is as being placed in water electrode, and keeps being not in contact with asphalt membrane.
After electrochemical workstation is connected with test pond, the test voltage of electrochemical workstation being set to 100mV, test voltage height is related to survey
Determining the accuracy of result, measure signal not notable when test voltage is the lowest, test voltage is the highest produces destruction to test asphalt film, sets and surveys
Examination rate of scanning is 300KHz-9MHz, the scale relationships of rate of scanning to electrochemical workstation flutter grasp asphalt film signal message number, scanning
The information of the broadest asphalt film obtained of frequency range is the most.
In test process, electrochemical workstation applies sinusoidal voltage to test electrode system, from test electrode system feedback output sinusoidal current
Signal, and then obtain testing the impedance information data of electrode system, represent with Nyquist figure and Bode figure.Wherein Nyquist figure is with test
The figure that impedance real part is made by the imaginary impedance of electrode system, abscissa represents test electrode system impedance real part, and vertical coordinate represents test electrode system
Imaginary impedance, the impedance magnitude of Nyquist figure representation test electrode system, Bode figure is logarithm and the phase angle of test electrode system impedance modulus
The figure being made the logarithm of identical abscissa rate of scanning, abscissa is rate of scanning, and vertical coordinate is respectively the logarithm testing electrode system impedance modulus
And phase angle.At interval of a period of time, test electrode system is carried out reading by electrochemical workstation, obtain testing electrode body under different soak time
The Nyquist figure of system and Bode scheme.At interval of 0.5 hour or gathered one by electrochemical workstation from test electrode system at interval of 1 hour
Secondary test data, obtain Nyquist figure and Bode schemes, as shown in Figure 4, according to the Nyquist figure collected and the shape of Bode figure, choosing
Select the equivalent-circuit model A soaking initial stage organometallic coatings system as shown in Figure 2 or immersion organometallic coatings in mid-term body as shown in Figure 3
The equivalent-circuit model B of system, is fitted by fitting software, draws the capacitance of different soak time Colophonium, draws Colophonium capacitance with immersion
The change curve of time, as shown in Figure 5.At the initial stage of mensuration, Colophonium has preferable obstructing capacity to moisture, selects the immersion initial stage shown in Fig. 2 to have
The equivalent-circuit model A of machine metal coating system, prolongation over time, moisture is gradually diffused into Colophonium inside and Colophonium and the interface of conductive plate,
Now select to soak shown in Fig. 3 the equivalent-circuit model B of organometallic coatings system in mid-term.
The Colophonium capacitance obtained according to matching, draws Colophonium capacitance with soak time change curve, sign water dispersal behavior in Colophonium.
Embodiment two
Repeat above-described embodiment one step, when wherein making the substrate covering asphalt film, electrically-conductive backing plate is heated to 70 DEG C, Colophonium is heated to 75 DEG C
Being set as 150mV by arranging test voltage in test parameter step, the Nyquist figure obtained and Bode scheme as shown in Figure 6, Colophonium capacitance variation
Curve chart is as shown in Figure 7.
Embodiment three
Repeat above-described embodiment one step, when wherein making the substrate covering asphalt film, electrically-conductive backing plate is heated to 80 DEG C, Colophonium is heated to 70 DEG C
Being set as 200mV by arranging test voltage in test parameter step, the Nyquist figure obtained and Bode scheme as shown in Figure 8, Colophonium capacitance variation
Curve chart is as shown in Figure 9.
Embodiment four
Test Colophonium is changed into b Colophonium, repeats above-described embodiment one step, when wherein making the substrate covering asphalt film, electrically-conductive backing plate is heated to
90 DEG C, Colophonium being heated to 65 DEG C of Nyquist figures obtained and Bode schemes as shown in Figure 10, Colophonium capacitance variation curve chart is as shown in figure 11.
Embodiment five
Repeating above-described embodiment four step, test voltage is set as 150mV, and the Nyquist figure obtained and Bode scheme as shown in figure 12, Colophonium electricity
Capacitance change curve is as shown in figure 13.
Embodiment six
Repeat above-described embodiment four step, when wherein making the substrate covering asphalt film, electrically-conductive backing plate is heated to 100 DEG C, Colophonium is heated to 70 DEG C
Test voltage is set as 200mV, and the Nyquist figure obtained and Bode scheme as shown in figure 14, and Colophonium capacitance variation curve chart is as shown in figure 15.
Embodiment seven
Test Colophonium is changed into c Colophonium, repeats above-described embodiment one step, when wherein making the substrate covering asphalt film, electrically-conductive backing plate is heated to
100 DEG C, Colophonium being heated to 60 DEG C of Nyquist figures obtained and Bode schemes as shown in figure 16, Colophonium capacitance variation curve chart is as shown in figure 17.
Embodiment eight
Repeating above-described embodiment seven step, test voltage is set as 150mV, and the Nyquist figure obtained and Bode scheme as shown in figure 18, Colophonium electricity
Capacitance change curve is as shown in figure 19.
Embodiment nine
Repeating above-described embodiment seven step, test voltage is set as 200mV, and the Nyquist figure obtained and Bode scheme as shown in figure 20, Colophonium electricity
Capacitance change curve is as shown in figure 21.
This specification embodiment one to embodiment nine demonstrates sign water completely new approach of dispersal behavior in Colophonium, shows that the method is applicable to water with each
Planting Colophonium, test voltage can select between 100mV-200mV.As long as in fact two kinds of difference in dielectric constant bigger, a kind of material can expand
The situation being scattered to another kind of material all can use technical solutions according to the invention.
Document cited in this specification already in connection with in literary composition as reference.The various modifications and variations pair of technical solution of the present invention detailed description of the invention
It is apparent from those skilled in the art, although technical solution of the present invention combines preferred implementation and is described, it should be appreciated that, it is desirable to award
The invention of power unsuitable should not be limited to these specific embodiments, it is true that for various detailed description of the invention described in the invention
Modifications and variations, will be apparent from for those skilled in the art, are covered by among technical solution of the present invention.
Claims (5)
1. characterize water method of dispersal behavior in Colophonium, comprise the following steps:
Using the electrically-conductive backing plate of surface covering asphalt film as working electrode, using carbon-point as to electrode, using water as electrolyte, by described working electrode, electrode and electrolyte are formed test electrode system；
Test electrode system is connected with electrochemical workstation, sets test voltage and the rate of scanning of electrochemical workstation, read electrochemical workstation test the data obtained at interval of a period of time, obtain Nyquist figure and Bode schemes；
According to obtaining Nyquist figure and the Bode figure shape at different time, select the equivalent-circuit model of immersion initial stage organic coating metal system or soak the equivalent-circuit model of organic coating metal system in mid-term, use fitting software that the data of Nyquist figure and Bode figure are fitted, obtain the capacitance of Colophonium during different soak time；
Draw Colophonium capacitance versus time curve according to the capacitance obtained, water dispersal behavior in Colophonium can be characterized；
It is characterized in that described surface covers the electrically-conductive backing plate employing following methods making of asphalt film, ganoid electrically-conductive backing plate is heated and maintained at 80 DEG C 100 DEG C, Colophonium is heated to 60 DEG C 70 DEG C be coated on heating after electrically-conductive backing plate, with blade Colophonium is uniformly coated with and scrapes at electrically-conductive backing plate.
Sign water the most according to claim 1 method of dispersal behavior in Colophonium, it is characterised in that heat water to boiling before test and be then cooled to room temperature.
Sign water the most according to claim 1 method of dispersal behavior in Colophonium, it is characterised in that described test voltage is any value between 100mV to 200mV.
Sign water the most according to claim 1 method of dispersal behavior in Colophonium, it is characterised in that described test voltage is 150mV.
Sign water the most according to claim 1 method of dispersal behavior in Colophonium, it is characterised in that described rate of scanning is 300KHz to 9MHz.
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Cited By (1)
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| CN108007811A (en) * | 2017-11-17 | 2018-05-08 | 哈尔滨工业大学 | A kind of division methods of vaporous water dispersal pattern in asphalt mortar, bituminous mortar |
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| CN105987943B (en) * | 2015-02-09 | 2019-04-26 | 中国科学院金属研究所 | A kind of organic coating performance in-situ detection device of the deep-sea based on pre-buried microelectrode |
| CN108956261B (en) * | 2018-09-07 | 2021-08-31 | 香港理工大学 | Preparation method of asphalt film |
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| CN103123330A (en) * | 2012-12-19 | 2013-05-29 | 长安大学 | Method for testing asphalt anti-penetrability performance |
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| CN103123330A (en) * | 2012-12-19 | 2013-05-29 | 长安大学 | Method for testing asphalt anti-penetrability performance |
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| 沥青、集料的表面自由能及水分在沥青中的扩散研究;魏建明;《中国博士学位论文全文数据库 工程科技II辑》;20100215;C034-1 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108007811A (en) * | 2017-11-17 | 2018-05-08 | 哈尔滨工业大学 | A kind of division methods of vaporous water dispersal pattern in asphalt mortar, bituminous mortar |
| CN108007811B (en) * | 2017-11-17 | 2020-02-11 | 哈尔滨工业大学 | Method for dividing diffusion mode of gaseous water in asphalt mortar |
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