CN106290074B - The detection method of bituminous pavement filler surface energy parameter - Google Patents
The detection method of bituminous pavement filler surface energy parameter Download PDFInfo
- Publication number
- CN106290074B CN106290074B CN201610864097.XA CN201610864097A CN106290074B CN 106290074 B CN106290074 B CN 106290074B CN 201610864097 A CN201610864097 A CN 201610864097A CN 106290074 B CN106290074 B CN 106290074B
- Authority
- CN
- China
- Prior art keywords
- filler
- reagent
- unit
- pressure
- kinds
- 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.)
- Active
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N13/00—Investigating surface or boundary effects, e.g. wetting power; Investigating diffusion effects; Analysing materials by determining surface, boundary, or diffusion effects
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N13/00—Investigating surface or boundary effects, e.g. wetting power; Investigating diffusion effects; Analysing materials by determining surface, boundary, or diffusion effects
- G01N2013/003—Diffusion; diffusivity between liquids
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 Non-Biological Materials By The Use Of Chemical Means (AREA)
Abstract
The invention discloses a kind of detection methods of road filler surface energy parameter, choose four kinds of chemical reagent of known surface energy parameter；It tests to obtain filler to the adsorption isotherm of one of chemical reagent (toluene) steam using vapor adsorption process, which is obtained to the diffusion pressure of filler by Gibbs equation solution；The m tested by the capillary rise method of four kinds of reagents2~t relationship straight line, the true capillary effective radius of filler is calculated by Washburn formula in conjunction with the diffusion pressure of toluene, other three kinds of reagents are calculated to the diffusion pressure of filler by Washburn formula, in conjunction with the known surface energy parameter of three kinds of reagents, solve to obtain the surface energy of filler by Good-van Oss-Chaudhury (GvOC) Simultaneous Equations.The test method that the present invention chooses for packing samples is more reasonable, and experimental test result is more objective and accurate, and the more existing test method of test accuracy is significantly improved.
Description
Technical field
Belong to field of road, and in particular to a kind of detection method of bituminous pavement filler surface energy parameter.
Background technique
In field of road, filler refer to by part below 0.075mm sieve pore it is powdered gather materials (be commonly called as mine
Powder) or solid addition material (such as cement, lime, flyash).The surface energy parameter of filler, joint are obtained by experimental test
The surface of pitch can parameter pitch and filler can be calculated in combination energy anhydrous and under having water state, it is for quantitatively evaluating
The service performances such as healing, cracking resistance and the water stability of asphalt are of great significance.Capillary rise method because it is easy to operate,
The main experimental method that the advantages that test is time-consuming short can be tested as current filler surface, basic principle can be summarized as follows：
(1) chemical reagent of four kinds of known surface energy parameters, density and viscosity is chosen, wherein comprising a kind of low-surface-energy
Apolar agent；
(2) filler is contained up in capillary glass tube, and capillary is immersed in respectively in four kinds of chemical reagent, pass through meat
Eye observes and records the height h that liquid rises in unit time t；
(3) assume that the apolar agent of wherein low-surface-energy is used as and refer to reagent, can complete wetting filler, i.e., and filler
Between contact angle θ be 0 °, pass through the h for the reagent that Washburn formula binding test obtains2Linear relationship between~t,
Calculate capillary effective radius Reff；
(4) h of obtained capillary effective radius Reff and other three kinds of reagents are combined2~t linear relationship, further
Other the three kinds contact angle θ between reagent and filler are calculated using Washburn formula；
(5) the contact angle θ for combining three kinds of reagents being calculated is calculated using Young-Dupre formula Simultaneous Equations
Obtain surface three fundametal components of energy of filler, respectively non-polar components γLW, polarity acid component γ+, polarity alkali component γ-。
But this test method is mainly summarized as follows there are many deficiencies：
(1) it using the height that liquid rises in the unit time is observed and recorded, is easy to be visually observed the factors such as subjective judgement
Influence the accuracy of test result；
(2) this hypothesis is substituted into the side Young-Dupre by the apolar agent complete wetting filler for assuming low-surface-energy energy
Filler surface energy non-polar components γ LW obtained in journey should be equal with the surface tension γ of apolar agent, this obviously with reality
It is not inconsistent, while the surface energy test result of filler is directly related with the reference reagent chosen, with reference to reagent difference test result meeting
It changes, therefore obtains being relative surface energy parameter, be not the real surface energy parameter of filler；
(3) do not consider the influence that the diffusion pressure of filler surface tests capillary rise method, and this factor can be direct
Influence filler surface energy parameter calculated result.
In view of many deficiencies existing for current capillary rise method test filler surface energy parameter, one kind is needed at this stage more
The test method of accurate test filler real surface energy parameter.
Summary of the invention
It is an object of that present invention to provide a kind of method of more accurate measurement filler real surface energy parameter, the test methods
It can effectively avoid test result and influenced by artificial subjective factor, the deficiencies of calculated result is related to reference to reagent selection, fill simultaneously
Divide the diffusion pressure for considering filler surface, finally obtains the real surface energy parameter of filler.
In order to achieve the above objectives, as follows using technical solution：
The detection method of road filler surface energy parameter, includes the following steps：
1) four kinds of chemical reagent for choosing known surface energy parameter, using capillary rise method test filler to each reagent not
With the correspondence uptake m in time t, fitting obtains m2~t relationship straight line chooses one of reagent in conjunction with improved
Washburn equation calculation capillary effective radius Reff；, it is shown below：
Wherein：ReffCapillary effective radius, unit cm；η-chemical reagent viscosity, unit mPas；ρ-chemical reagent
Density, unit g/cm3；πeDiffusion pressure of the reagent to filler, unit ergs/cm2；
2) the capillary effective radius R being calculated is combinedeff, further obtained using improved Washburn equation calculation
To filler to the diffusion pressure π of other three kinds of reagentse, it is shown below：
3) Good-van Oss-Chaudhury (GvOC) combinatorial formula is utilized, establishes filler respectively to the table of three kinds of reagents
Face diffusion pressure πe, reagent cohesive energy and filler and the adhesion energy of reagent between equilibrium equation：
Wherein：γL,The surface for being respectively reagent can total amount, surface energy non-polar components, polarity acid point
Amount, polarity alkali component, unit ergs/cm2；The surface for being respectively filler can non-polar components, polarity acid point
Amount, polarity alkali component, unit ergs/cm2；πeDiffusion pressure of the filler to reagent, unit ergs/cm2；
Three kinds of reagents form three solving simultaneous equations and obtain the surface energy non-polar components of fillerPolarity acid componentPolarity alkali component
Above scheme, diffusion pressure π of the step 1) reagent to fillereIt gets by the following method：
Saturated vapor adsorbance n using vapor adsorption process test filler to the reagent under each rank vapour pressure, passes through
Diffusion into the surface pressure π of the Gibbs equation solution filler to the reagente, Gibbs equation is as follows：
Wherein：R- ideal gas constant, 8.314472J/molK；T- test temperature, unit K；p1Initial vapor pressure
(as 0), unit mbar；p0Saturated vapor pressure under test temperature, unit mbar；The molecule molal weight of M- steam, unit
g/mol；N- vapor sorption amount, unit mg/g；Each rank vapour pressure of p-, unit mbar；The specific surface area of SSA- filler, unit mg/
g。
The specific surface area SSA of above scheme, the filler is calculated using following formula：
Wherein：nmThe saturated extent of adsorption of monolayer；N0Avgadro constant；The molal weight of M- molecule, unit g/
mol；Projected area of each the vapor sorption molecule of α-in filler surface, unit m2；
Vapor sorption molecule is calculated in the projected area α of filler surface using following formula：
The saturated extent of adsorption n of monolayermIt is calculated using following formula：
Wherein：S, I- are respectively equationInIt is right?Range
The slope and intercept of interior fitting a straight line.
Meanwhile the relation curve between the vapor sorption amount n and vapour pressure p under each rank vapour pressure by following equation model into
Row fitting：
Wherein：n0, A, k- are respectively models fitting constant.
According to the above scheme, it is known that surface can parameter four kinds of chemical reagent be toluene, n-hexane, chloroform, formamide, wherein
The chemical reagent that toluene is used as vapor adsorption process and capillary rise method to test simultaneously, n-hexane, chloroform, formamide are as in capillary
The chemical reagent of the method for liter test.
Compared with the existing technology, present invention joint can be joined using the surface of vapor adsorption process and capillary rise method test filler
Number, no matter from the reasonability of test method or test accuracy more existing test method is with significant progress, specifically such as
Under：
Using the quality m of packing material absorbing reagent in testing time t, rise in time t instead of conventional method test agent
Height h, effectively prevent the defect of artificial naked eyes subjective judgement, improve the precision of experimental test；
It is proposed the diffusion pressure π by test filler to reagenteCalculate the capillary effective radius R of fillereff, effectively keep away
Exempt to assume that nonpolar low-surface-energy reagent is used as with reference to caused by reagent complete wetting filler itself and Young-Dupre equation phase lance
The deficiency of shield；
New method has fully considered filler in dump energy (the i.e. diffusion pressure π of complete wetting reagent rear surfacee), simultaneously
Surface energy test result defect relevant to reference reagent selection is avoided, guarantees that the surface that test obtains can be the true of filler
It surface can parameter.
Detailed description of the invention
Attached drawing 1：The overall schematic of vapor adsorption process is carried out using magnetic suspension weight balancing system：
Wherein, (1) is magnetic suspension balance；It (2) is sample bucket；It (3) is temp probe；It (4) is toluene vapor molecule；(5)
For constant temperature circulating bath；It (6) is soak zones；It (7) is steam control valve；It (8) is reagent vials；It (9) is gas control valve；(10)
For vacuum pump；(11) it is bathed for constant temperature circulating.
Attached drawing 2：Limestone, two kinds of packing samples single test test results of diabase and the knot obtained using models fitting
Fruit；
Attached drawing 3：The schematic diagram of capillary rise method is carried out using full-automatic surface tension instrument：
Wherein, (12) are cylindrical metal cylinder；It (13) is packing samples；(14) for by the chemical reagent of packing material absorbing；
It (15) is the chemical reagent of known surface energy parameter；(16) for can automatic lifting reagent storage platform；It (17) is microbalance；
(18) it is bathed for constant temperature circulating；
Attached drawing 4：The m that limestone uses four kinds of reagent single tests to test2Fitting a straight line figure between~t.
Specific embodiment
Following embodiment further illustrates technical solution of the present invention, but not as limiting the scope of the invention.
(1) using vapor adsorption process test filler to the diffusion pressure π of reagente
Saturated extent of adsorption n of the filler to test agent at each rank vapour pressure p is tested by vapor adsorption process, in conjunction with BET
Model calculates filler to the specific surface area of the reagent, and BET model formation is：
In formula：P- sublevel is passed through each rank vapour pressure under steam, unit mbar；p0Saturation under gas specific temperature is steamed
Vapour pressure, unit mbar；The quality of unit mass filling adsorption steam, unit mg/g under each rank vapour pressure p of n-；nmSaturated vapor
Press p0The quality of lower unit mass filling adsorption steam, unit mg/g；C- thermodynamic parameter relevant to steam molecule heat of adsorption.
A large number of experiments has proven to：For most of absorption systems, work as pressure ratioWhen in 0.05~0.40 range,It is rightMapping is approximately straight line, i.e., in this interval range, adsorption test result meets BET theory.
The present invention is in pressure ratioTo set 10 rank vapour pressure forces in 0~1 range, while guaranteeing 0.05~0.40
There are enough pressure spots in range, for according to BET modeling renderingIt is rightRelationship straight line, slope S and intercept I difference
For：
The saturated vapor adsorbance n of monolayer can be obtained by slope S and intercept Im, by nmAnd each steam molecule is being filled out
The specific surface area SSA of filler can be calculated in the projected area α on material surface, be shown below respectively：
Wherein each steam molecule can be asked in the projected area α of filler surface according to global molecular closestpacking principle
, it is shown below：
In formula：N0Avgadro constant；The molal weight of M- molecule, unit g/mol；ρ-steam molecule is in test temperature
Liquidus density under degree, unit g/cm3。
Vapor sorption thermoisopleth is drawn using the vapor sorption amount n of filler surface under each rank vapour pressure p measured, under
Formula is fitted to obtain adsorption isotherm line model：
In formula：n0, A, k- are models fitting constant.
After obtaining adsorption isotherm, using Gibbs equation solution filler to the diffusion pressure π of reagente, calculation formula
It is shown below：
In formula：R- ideal gas constant, 8.314472J/molK；T- test temperature, unit K；p1Initial vapor pressure
(as 0), unit mbar；p0Saturated vapor pressure, unit mbar.
(2) capillary rise is combined to test, the diffusion pressure π obtained using testeCalculate capillary effective radius Reff
Uptake m of the packing samples to each chemical reagent in different time t is tested by capillary rise method, in conjunction with
Hagen-Poiseuille rule, the energy foundation energy equal with internal and external pressure difference acting discharged by reagent complete wetting filler
Equilibrium equation is measured, it is as follows to obtain improved Washburn equation：
In formula：ReffCapillary effective radius, unit cm；ρ-chemical reagent density, unit g/cm3；πeFiller is to each
The diffusion pressure of reagent, unit ergs/cm2；η-chemical reagent viscosity, unit mPas.
M in above formula2Linear relationship is presented between~t, is by being fitted obtained straight slope k
It, can be further by being somebody's turn to do using formula 9 in conjunction with the diffusion pressure for one of reagent that vapor adsorption process is tested
The capillary rise method test result calculations of reagent obtain the capillary effective radius R of fillereff, it is shown below：
In formula：πeDiffusion pressure of the filler that vapor adsorption process is tested in step (1) to one of reagent, list
Position ergs/cm2。
(3) obtained capillary effective radius R is combinedeffFiller is calculated to the diffusion pressure π of other three kinds of reagentse
The true capillary effective radius R of filler being calculated by formula 10 using one of reagenteff, further tie
Close the m that the capillary rise of other three kinds of reagents is tested2~t relationship straight line calculates expansion of each reagent to filler using formula (9)
Pressure is dissipated, is shown below：
In formula：ReffThe true capillary effective radius R of the filler being calculated in step (2)eff, unit cm.
(4) diffusion pressure π of the filler that combination obtains to other three kinds of reagentseThe surface energy of Simultaneous Equations solution filler
Parameter
The present invention respectively corresponds the filler surface diffusion pressure π being calculated according to other three kinds of reagentse, tried in conjunction with three kinds
Three surface energy basic parameters known to agent (are used respectivelyIndicate), with Good-van Oss-Chaudhury
(GvOC) three surfaces energy basic parameter that combinatorial formula Simultaneous Equations solve filler (is used respectivelyIndicate), it solves
Thinking is as follows：
It enablesWherein It is organized into matrix form Ax=b：
X=A can thus be solved-1B, so that three surfaces for further obtaining filler can basic parameter.
Embodiment 1
1) prepare packing samples
Two kinds of limestone, diabase samples are chosen as test sample, sieving takes each aggregate sample of 2.36mm or more, uses
It dries, is crushed into powder shape after cooling using the pulverizer sample particle that will gather materials, and be sieved and take 0.075mm with lower part after distilled water washing
It is allocated as packing samples, placing it in setting temperature is to heat at least 12 hours in 150 DEG C of baking ovens, then takes out and is placed on sealing
Natural cooling in drying box.
2) vapor sorption experimental test filler is carried out to the diffusion pressure π of toluenee.Referring to shown in attached drawing 1.
1. injecting toluene reagent in reagent vials and carrying out freezing vacuumize process
The toluene reagent of about 15ml is injected into the reagent vials of magnetic suspension weight balancing system using clean syringe, it will
Bottle sealing is placed at reagent vials (8), then is carried out being refrigerated to temperature to bottle using liquid nitrogen and is down to toluene reagent freezing point
Hereinafter, being vacuumized to bottle by steam control valve (7) to remove internal air that may be present using vacuum pump (10)
Impurity.
2. weighing sample bucket quality
Sample bucket (2) is placed on magnetic suspension balance (1) hook, and is down in sealing reaction cavity, constant temperature is passed through
Simultaneously combination temperature probe (3) detection Control experiment temperature is 20 DEG C for circulation bath (5) heating, is weighed using magnetic suspension balance in vacuum
And under test temperature sample bucket quality；
3. being packed into packing samples and carrying out heat pre-treatment
After to 2. step, the nitrogen of 1 standard atmospheric pressure is slowly introducing into reaction cavity by gas control valve (9)
Gas back pressure, after rise magnetic suspension balance, packing samples are placed in sample bucket, adjust Balance after again by magnetic suspension
Balance is down in sealing reaction cavity, is set heating temperature and is persistently vacuumized as 150 DEG C, while to reaction cavity, to remove chamber
Impurity molecule internal and that sample surfaces and inside may be adsorbed on.By magnetic suspension balance record sample quality at any time
Variation, judge when sample quality is kept constant within continuous half an hour assert preprocessing process have reached balance, can terminate
The step.
4. weighing packing samples quality
After to 3. step, test temperature is set as 20 DEG C, using magnetic suspension balance measurement in vacuum and this test temperature
The matter of packing samples can be calculated in conjunction with 2. empty sample bucket quality that step obtains in the quality sum for spending lower sample+sample bucket
Amount.
5. setting and implementing vapor sorption test
In conjunction with 20 DEG C of setting toluene vapor adsorption tests of test temperature, using vacuum pressure value 0 as initial pressure value, equipment
Maximum pressure value under the accessible test temperature sets the continuous 10 rank steam pressure of toluene as last rank vapour pressure force value
Value, respectively：0,3,6,8,10,12,16,20,24,28mbar.Each rank is controlled by steam control valve (7) according to design scheme
Toluene vapor molecule (4), which is passed into reaction cavity, carries out adsorption test, this process is to bathe (11) by constant temperature circulating first
Heating toluene reagent forms steam and avoids steam molecule from generating condensation by the heat preservation of soak zones (6) continuous heating, in conjunction with soft
The relation curve of sample quality variable quantity and time that part automatically generates keeps constant work by sample quality in continuous half an hour
The adsorption saturation state of filler under each rank steam pressure is judged for decision condition, guarantees that filler reaches suction under each rank vapour pressure
Attached equilibrium state the vapor sorption amount of packing samples under each rank vapour pressure can be obtained by adsorption test, in combination with filler sample
Vapor sorption amount of the unit filler under each rank vapour pressure can be calculated in the quality of product.
6. filler is to the diffusion pressure π of tolueneeIt calculates
Three times, by taking a wherein test result as an example, the filler being calculated is steamed in each rank for every kind of sample retest
The result (match value) that saturated vapor adsorbance (test value) and use formula (7) fitting under vapour pressure obtain, which summarizes, to be listed in the table below
In 1, while initial data and models fitting figure are as shown in attached drawing 2：
1 two kinds of packing samples of table are to saturated vapor adsorbance under each rank vapour pressure of toluene
The diffusion pressure that toluene tests two kinds of samples three times is further calculated using formula 8, calculated result is summarized
As shown in table 2 below, it takes the average value of test result three times as final result, and uses coefficient of variation CV (%) evaluation test knot
The repeatability of fruit, the coefficient of variation illustrates that test repeatability is very good within 6% as can be seen from the table：
The diffusion pressure calculated result of 2 sample of table
3) capillary rise experimental test filler is carried out to the diffusion pressure π of other three kinds of reagentse.Referring to shown in attached drawing 3.
1. being packed into packing samples in cylindrical metal cylinder
Weigh with scale 5g packing samples (13) are adopted, bottom is put into a suitable size in cylindrical metal cylinder (12)
Packing samples are then fitted into metal cylinder simultaneously uniformly jolt ramming 20 times using spoon by circular filter paper, guarantee that dress sample pine spreads every time
Degree is consistent, and finally metal cylinder is fixed on microbalance (17) fixture.
2. balance weigh filler immerse reagent after quality with dip time variation
The chemical reagent (15) (toluene, n-hexane, chloroform, formamide) for successively carrying out known surface energy parameter fills out two kinds
The capillary rise of material is tested, and surface energy parameter, density and the viscosity of four kinds of reagents at 20 °C see the table below shown in 3.It will contain
The vessel level for putting reagent is placed on self-raising platform (16), and bathing (18) Control experiment temperature by constant temperature circulating is 20 DEG C,
" Sorption measurement " test pattern is chosen in full-automatic surface tension instrument test software, sets test parameter
For：Impregnating depth 1mm, test rate 6mm/min, test total time 600s, data collection capacity 60, acquisition speed 10s/
It is a.When starting test, self-raising platform uniform speed slow, which rises at metal cylinder bottom end immersed in liquid level or less 1mm, to be stopped, and is tried at this time
Agent penetrates filter paper under capillary action and immerses in filler, and balance weighs by the chemical reagent (14) of packing material absorbing and remembers in software
Mass change amount m when recording different time t thinks that reagent arrived at the top of filler when observing that m is substantially reduced with t variable quantity,
Off-test.
The Basic Physical Properties index of 3 four kinds of chemical reagent of table
3. linear fit m2~t relational graph calculates the capillary effective radius Reff of filler and the diffusion to each reagent
Pressure πe
The corresponding packing quality variable quantity m of the different time t that software collection is obtained carries out m2The Linear Quasi of~t relational graph
It closes (see shown in attached drawing 4), obtains straight slope k i.e. m2/ t, by two kinds of fillers, to four kinds of reagents, test result is fitted to obtain three times
M2/ t is summarized as follows in table 4, where it is determined that coefficients R 2 is straight line fitting degree, using coefficient of variation CV (%) evaluation test result
Repeatability, it can be seen that R2 is 0.995 or more from table, and CV (%) is within 4%, and illustrate test result can
It is very high by property and repeatability.
The m that 4 capillary rise of table is tested2/ t value
In conjunction with diffusion pressure calculated result in table 2, the true capillary effective radius of filler is calculated using formula (10)
Reff, filler is calculated to the diffusion pressure π of three kinds of reagents using formula (11) on this basise, calculated result is summarized respectively
It is listed in the table below in 5-6, the coefficient of variation CV (%) of all calculated results is respectively less than 5% as can be seen from the table, illustrates test
Repeatability is very good：
The capillary effective radius R of 5 two kinds of fillers of tableeff
| Filler | Limestone | Diabase |
| Reff1(cm) | 0.061057554 | 0.071912038 |
| Reff2(cm) | 0.061017484 | 0.072754742 |
| Reff3(cm) | 0.060599615 | 0.071857136 |
| Avg.Reff(cm) | 0.060891551 | 0.072174639 |
| CV (%) | 0.42 | 0.70 |
Diffusion pressure π of the 6 two kinds of fillers of table to three kinds of reagentse
4) surface that Simultaneous Equations solve filler can parameter
In conjunction with the filler being calculated in table 6 to the diffusion pressure of three kinds of reagents, pass through formula (12) Simultaneous Equations
It solves and obtains the surface energy parameter of filler, calculated result is summarized and is listed in the table below shown in 7：
Two kinds of filler surface energy parameters that table 7 is calculated
Claims (3)
1. the detection method of road filler surface energy parameter, it is characterised in that include the following steps：
1) choose known surface energy parameter four kinds of chemical reagent, using capillary rise method test filler to each reagent when different
Between correspondence uptake m in t, fitting obtains m2~t relationship straight line chooses one of reagent and combines the improved side Washburn
Journey calculates capillary effective radius Reff；It is shown below：
Wherein：ReffCapillary effective radius, unit cm；η-chemical reagent viscosity, unit mPas；ρ-chemical reagent is close
Degree, unit g/cm3；πeDiffusion pressure of the reagent to filler, unit ergs/cm2；
Diffusion pressure π of the reagent to fillereIt gets by the following method：
Saturated vapor adsorbance n using vapor adsorption process test filler to the reagent under each rank vapour pressure, by the side Gibbs
Journey solves filler to the diffusion into the surface pressure π of the reagente, Gibbs equation is as follows：
Wherein：R- ideal gas constant, 8.314472J/molK；T- test temperature, unit K；p1Initial vapor pressure takes
0mbar；p0Saturated vapor pressure under test temperature, unit mbar；The molecule molal weight of M- steam, unit g/mol；N- steams
Vapour adsorbance, unit mg/g；Each rank vapour pressure of p-, unit mbar；The specific surface area of SSA- filler, unit mg/g；
The specific surface area SSA of the filler is calculated using following formula：
Wherein：nmThe saturated extent of adsorption of monolayer；N0Avgadro constant；The molal weight of M- molecule, unit g/mol；
Projected area of each the vapor sorption molecule of α-in filler surface, unit m2；
Each described vapor sorption molecule is calculated in the projected area α of filler surface using following formula：
The saturated extent of adsorption n of the monolayermIt is calculated using following formula：
Wherein：S, I- are respectively equationInIt is right?Intend in range
Close the slope and intercept of straight line；Wherein, the relation curve between the vapor sorption amount n and vapour pressure p under each rank vapour pressure press with
Lower equation model is fitted：
Wherein：n0, A, k- are respectively models fitting constant；
2) the capillary effective radius R for combining step 1 to obtaineff, further filled out using improved Washburn equation calculation
Expect the diffusion pressure π to other three kinds of reagentse, it is shown below：
3) Good-van Oss-Chaudhury (GvOC) combinatorial formula is utilized, filler is established and the surface of three kinds of reagents is expanded respectively
Dissipate pressure πe, reagent cohesive energy and filler and the adhesion energy of reagent between equilibrium equation, be shown below：
Wherein：γL,Respectively the surface of reagent can total amount, surface energy non-polar components, polarity acid component, pole
Property alkali component, unit ergs/cm2；Respectively the surface of filler can non-polar components, polarity acid component, polarity
Alkali component, unit ergs/cm2；πeDiffusion pressure of the filler to reagent, unit ergs/cm2；
4) three kinds of reagents form three solving simultaneous equations and obtain the surface energy non-polar components of fillerPolarity acid component
Polarity alkali component
2. the detection method of road filler surface energy parameter as described in claim 1, it is characterised in that known surface energy parameter
Four kinds of chemical reagent are toluene, n-hexane, chloroform, formamide；Wherein chemical reagent of the toluene as vapor adsorption process, just oneself
The chemical reagent that alkane, chloroform, formamide are tested as capillary rise method.
3. the detection method of road filler surface energy parameter as claimed in claim 2, it is characterised in that toluene is used as steam simultaneously
The chemical reagent of absorption method and the test of capillary rise method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610864097.XA CN106290074B (en) | 2016-09-29 | 2016-09-29 | The detection method of bituminous pavement filler surface energy parameter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610864097.XA CN106290074B (en) | 2016-09-29 | 2016-09-29 | The detection method of bituminous pavement filler surface energy parameter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106290074A CN106290074A (en) | 2017-01-04 |
| CN106290074B true CN106290074B (en) | 2018-11-20 |
Family
ID=57715779
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610864097.XA Active CN106290074B (en) | 2016-09-29 | 2016-09-29 | The detection method of bituminous pavement filler surface energy parameter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106290074B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111220507A (en) * | 2019-12-03 | 2020-06-02 | 中国农业大学 | Method for rapidly measuring wettability of protein powder |
| CN111929217B (en) * | 2020-07-27 | 2021-07-30 | 南京大学 | Method for measuring effective specific surface area of porous organic filler |
| CN112816366A (en) * | 2021-01-20 | 2021-05-18 | 武汉理工大学 | Method and system for selecting chemical reagent in asphalt material surface energy test |
| US20220326143A1 (en) * | 2021-04-09 | 2022-10-13 | Wuhan University Of Technology | Method for evaluating influence of humidity on asphalt-aggregate adhesion |
| CN113567306B (en) * | 2021-07-15 | 2023-01-10 | 武汉理工大学 | Aggregate surface energy prediction calculation method |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5827951A (en) * | 1995-04-21 | 1998-10-27 | Sandia National Laboratories | Solderability test system |
| CN101415654A (en) * | 2003-07-14 | 2009-04-22 | 苏珀尔西尔有限公司 | Hydrophobic composites and particulates and applications thereof |
| CN101598537A (en) * | 2009-07-24 | 2009-12-09 | 武汉大学 | A kind of method and apparatus of measuring capillary inner diameter |
| CN102539289A (en) * | 2010-09-30 | 2012-07-04 | 三菱综合材料株式会社 | Liquid surface free energy and solid-liquid contact angle, interface free energy and prediction method for attaching energy |
| CN102840843A (en) * | 2012-08-30 | 2012-12-26 | 西北工业大学 | Method for obtaining effective capillary radius of unidirectional fiber bundle |
| CN102879304A (en) * | 2012-09-26 | 2013-01-16 | 上海大学 | Method for testing scouring resistance of adsorption layer of solid surface |
| CN105242030A (en) * | 2015-09-18 | 2016-01-13 | 武汉理工大学 | Road aggregate surface energy parameter detection method |
| CN105547926A (en) * | 2015-12-07 | 2016-05-04 | 重庆交通大学 | Determination method for mineral powder surface free energy |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100222469A1 (en) * | 2009-02-27 | 2010-09-02 | Semmaterials, L.P. | A crack resistant layer with good binder fracture energy properties and method of selecting same |
-
2016
- 2016-09-29 CN CN201610864097.XA patent/CN106290074B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5827951A (en) * | 1995-04-21 | 1998-10-27 | Sandia National Laboratories | Solderability test system |
| CN101415654A (en) * | 2003-07-14 | 2009-04-22 | 苏珀尔西尔有限公司 | Hydrophobic composites and particulates and applications thereof |
| CN101598537A (en) * | 2009-07-24 | 2009-12-09 | 武汉大学 | A kind of method and apparatus of measuring capillary inner diameter |
| CN102539289A (en) * | 2010-09-30 | 2012-07-04 | 三菱综合材料株式会社 | Liquid surface free energy and solid-liquid contact angle, interface free energy and prediction method for attaching energy |
| CN102840843A (en) * | 2012-08-30 | 2012-12-26 | 西北工业大学 | Method for obtaining effective capillary radius of unidirectional fiber bundle |
| CN102879304A (en) * | 2012-09-26 | 2013-01-16 | 上海大学 | Method for testing scouring resistance of adsorption layer of solid surface |
| CN105242030A (en) * | 2015-09-18 | 2016-01-13 | 武汉理工大学 | Road aggregate surface energy parameter detection method |
| CN105547926A (en) * | 2015-12-07 | 2016-05-04 | 重庆交通大学 | Determination method for mineral powder surface free energy |
Non-Patent Citations (3)
| Title |
|---|
| Capillary rise dynamics of aqueous glycerol solutions in glass capillaries:A critical examination of the Washburn equation;M.O’Loughlin et al.;《Journal of Colloid and Interface Science》;20130707;第257-264页 * |
| Measurements of the wettability of catalyst support materials using the Washburn capillary rise technique;Jacob Evan Jaine et al.;《Powder technology》;20150225;第123-128页 * |
| Washburn薄层毛细渗透法测定;杜美娜 等;《含能材料》;20070630;第15卷(第3期);第269-272页 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106290074A (en) | 2017-01-04 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106290074B (en) | The detection method of bituminous pavement filler surface energy parameter | |
| Webb | Volume and density determinations for particle technologists | |
| CN101726447B (en) | Method and device for measuring moisture absorptivity of aggregates | |
| CN104483334B (en) | A kind of method of visual representation cement-based material moisture spatial distribution and content | |
| CN105928814A (en) | Asphalt mixture penetrating type water steam diffusion coefficient detection method | |
| CN105136603A (en) | Method for detecting diffusion coefficient of water vapor in bituminous mixture | |
| CN108007811A (en) | A kind of division methods of vaporous water dispersal pattern in asphalt mortar, bituminous mortar | |
| CN101025394A (en) | Method and instrument for detecting aggregate relative density and water absorbing rate | |
| CN106680148A (en) | Viscosity testing device and testing method thereof | |
| CN105242030B (en) | The detection method of road surface of aggregate energy parameter | |
| CN105938084B (en) | A kind of chemistry imbibition agent permeance property evaluation method | |
| CN107860685B (en) | Method for detecting water content of sandy soil | |
| Findenegg | The volumetric behavior of hydrocarbon liquids near the graphon surface | |
| CN216284777U (en) | Test device capable of measuring soil moisture and rock collapse resistance | |
| Liu et al. | Influence of contact angle on soil–water characteristic curve with modified capillary rise method | |
| CN110455665A (en) | Asphalt accumulation type aqueous vapor movement parameter detection apparatus and method | |
| Russell et al. | The determination of the size distribution of soil clods and crumbs | |
| Schanz et al. | Time effects on total suction of bentonites | |
| US20080134769A1 (en) | Characterization of liquid, water and/or moisture transport properties of fabrics | |
| Peroni et al. | Measurement of osmotic suction using the squeezing technique | |
| CN205580922U (en) | Test bituminous mixture hair volume density's device | |
| CN216160380U (en) | Intelligent temperature control type high-suction testing device | |
| RU2599921C1 (en) | Method for assessing wetting ability of solutions of surfactants in relation to minerals and rocks | |
| CN109490139B (en) | Device and method for testing true density of material based on physical adsorption instrument | |
| Plaisted et al. | Testing of expansive clays in a centrifuge permeameter |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 430070 Hubei Province, Wuhan city Hongshan District Luoshi Road No. 122 Patentee after: WUHAN University OF TECHNOLOGY Patentee after: Hubei Changjiang Road and Bridge Co.,Ltd. Address before: 430070 Hubei Province, Wuhan city Hongshan District Luoshi Road No. 122 Patentee before: WUHAN University OF TECHNOLOGY Patentee before: HUBEI CHANG JIANG ROAD & BRIDGE Co.,Ltd. |