CN101975716B - Device for testing foaming performance of foam asphalt - Google Patents
Device for testing foaming performance of foam asphalt Download PDFInfo
- Publication number
- CN101975716B CN101975716B CN201010277430XA CN201010277430A CN101975716B CN 101975716 B CN101975716 B CN 101975716B CN 201010277430X A CN201010277430X A CN 201010277430XA CN 201010277430 A CN201010277430 A CN 201010277430A CN 101975716 B CN101975716 B CN 101975716B
- Authority
- CN
- China
- Prior art keywords
- gland
- water tank
- communicated
- support
- water
- 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
- 239000010426 asphalt Substances 0.000 title claims abstract description 44
- 238000005187 foaming Methods 0.000 title claims abstract description 31
- 239000006260 foam Substances 0.000 title claims abstract description 20
- 238000012360 testing method Methods 0.000 title abstract description 28
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 70
- 210000004907 gland Anatomy 0.000 claims abstract description 20
- 230000001174 ascending effect Effects 0.000 claims description 6
- 238000009434 installation Methods 0.000 claims description 5
- 230000002000 scavenging effect Effects 0.000 claims description 5
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 abstract 2
- 239000007789 gas Substances 0.000 description 12
- 238000010438 heat treatment Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 238000007599 discharging Methods 0.000 description 5
- 238000007789 sealing Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 239000012528 membrane Substances 0.000 description 4
- 238000005303 weighing Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 238000002474 experimental method Methods 0.000 description 3
- 238000002347 injection Methods 0.000 description 3
- 239000007924 injection Substances 0.000 description 3
- 238000011056 performance test Methods 0.000 description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 2
- 238000007664 blowing Methods 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000008929 regeneration Effects 0.000 description 2
- 238000011069 regeneration method Methods 0.000 description 2
- 239000000741 silica gel Substances 0.000 description 2
- 229910002027 silica gel Inorganic materials 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 238000010998 test method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000009533 lab test Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000008961 swelling Effects 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 239000002918 waste heat Substances 0.000 description 1
Images
Landscapes
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The invention discloses a device for testing the foaming performance of foam asphalt. The invention aims to provide a testing facility which is simple and fast in operation and can accurately test the foaming performance of the foam asphalt. The invention is characterized by comprising a pedestal, a booster tube, a utensil seat, a water tank, a water inlet pipe, a support, a gland, a compressing retaining ring, a threaded rod, a graduated tube, an air guide tube and a booster pump, wherein the utensil seat, the water tank, the support and the booster pump are fixed on the pedestal; the water tank is communicated with the booster pump by the booster tube; one end of the water inlet pipe is communicated with the water tank, the other end thereof is communicated with a shower nozzle in the gland; the compressing retaining ring and the threaded rod tightly compress the gland beneath the support; the graduated tube is fixed on the support and is communicated with a foaming vessel by the air guide pipe; and the gland is further provided with a breather valve. The device of the invention is mainly applied in the highway engineering laboratory to detect foaming expansion ratio and half-life period of the foam asphalt.
Description
Technical field
The present invention relates to a kind of foamed asphalt foam performance proving installation, more particularly, relate to the device of a kind of highway engineering foamed asphalt laboratory foam performance test.
Background technology
Foamed asphalt also is expansion pitch, is a kind of novel pitch mix, and the main application of foamed asphalt is as the basic unit in the Bituminous Pavement Cold Regeneration technology.The foam performance of research foamed asphalt helps more deep understanding foamed asphalt various characteristics, particularly in foamed asphalt recycling technology to aspect the regeneration of old asphalt pavement, have important directive significance.
The foam performance of foamed asphalt mainly comprises expansivity and half life period two indexs.The main method of foam performance test at present is to let pitch in a unlimited cylindrical container, foam, and asphalt surface is converted into two required indexs then apart from the distance and the time of barrel edge in the bucket through measuring.Pitch is even foaming in this method acquiescence bucket, and the increase of volume is that the expansion uniform plane rises during foaming.So just having changed swelling of pitch is to be the fact that the spheroid shape shape swells, and has ignored the interstitial volume between the ellipsoid, thereby makes that the resultant error of test is bigger, can not reflect real foam characteristics.
Summary of the invention
The object of the present invention is to provide a kind of simple to operate, quick, laboratory test device that can more accurately test out the foamed asphalt foam performance, to fill up the blank in present technique field.
For realizing above-mentioned purpose; Technical solution of the present invention is: a kind of foamed asphalt foam performance proving installation is characterized in that: it comprises base 1, ascending pipe 2, Table vessel holder 4, water tank 5, water inlet pipe 7, support 8, gland 9, compresses clasp 10, screw rod 11, graduated tube 12, wireway 13 and supercharge pump 16.On the described base 1, be fixed with Table vessel holder 4, water tank 5, support 8 and supercharge pump 16.Water tank 5 is communicated with supercharge pump 16 through ascending pipe 2; One end of water inlet pipe 7 is communicated with water tank 5; Shower nozzles in the other end and the gland 9 are communicated with, compress clasp 10 and screw rod 11 gland 9 be pressed on support 8 below, graduated tube 12 is fixed on the support 8; It is communicated with foaming ware 3 through wireway 13, and scavenging air valve 14 also is installed on the gland 9.
The invention has the beneficial effects as follows: simple, the easy assembling of whole apparatus structure; Method of testing is uncomplicated, easy master, and operation steps is few; The more important thing is and to test out two indexs---expansivity and the half life period that characterizes foam characteristics more exactly.
Description of drawings
Fig. 1 is a perspective view of the present invention.
Fig. 2 is the structural representation of shower nozzle of the present invention.
Among the figure: 1-base, 2-ascending pipe, the 3-ware that foams, 4-Table vessel holder, 5-water tank; The 6-solenoid valve, the 7-water inlet pipe, the 8-support, the 9-gland, 10-compresses clasp; The 11-screw rod, 12-graduated tube, 13-wireway, 14-scavenging air valve, 15-vessel guide rail; The 16-supercharge pump, 17-inlet opening, 18-shower nozzle water inlet pipe, 19-water outlet needle tubing, 20-nozzle boss.
Embodiment
Below in conjunction with accompanying drawing the present invention and embodiment thereof are done further explain.
Referring to Fig. 1 and Fig. 2, the invention is characterized in: it comprises base 1, ascending pipe 2, Table vessel holder 4, water tank 5, water inlet pipe 7, support 8, gland 9, compresses clasp 10, screw rod 11, graduated tube 12, wireway 13 and supercharge pump 16, on the described base 1; Be fixed with Table vessel holder 4, water tank 5, support 8 and supercharge pump 16; Water tank 5 is communicated with supercharge pump 16 through ascending pipe 2, and an end of water inlet pipe 7 is communicated with water tank 5, and the other end is communicated with gland 9 interior shower nozzles; Compress clasp 10 and screw rod 11 gland 9 be pressed on support 8 below; Graduated tube 12 is fixed on the support 8, and it is communicated with foaming ware 3 through wireway 13, and scavenging air valve 14 also is installed on the gland 9.
Design concept of the present invention and scheme are under the prerequisite behind the asphalt foaming, make the method for performance test and operation steps simple, quick, accurate, thereby realize the purpose of invention.
A certain amount of pitch is placed among the container, be heated to the temperature that can foam, toward the pitch high pressure water injection of heat, heat absorption flashed to water vapour after water got into pitch in an airtight container.Because heated bitumen has certain flowability and viscosity, can form one deck asphalt membrane at the outside surface of water vapour, so just through the heat absorption evaporation of water, the foaming that pitch parcel water vapour is realized pitch.Gas that can the asphalt membrane in the closed container is outer behind the asphalt foaming is discharged, and the gas volume of discharge is the swell increment of asphalt foaming.For obtaining discharging the volume of gas; Be external to the gas of discharging in the closed container transparent, a built-in water droplet and have the conduit of scale; The gas of discharging can promote the water droplet in the conduit one segment distance; Go out the volume of getting rid of gas in the container according to distance that promotes and conduit cross section integrating then, so the swell increment of asphalt foaming is just obtained by following formula:
V＝A
0×ΔS
In the formula, V: the stereomutation amount of pitch;
A
0: the cross-sectional area of external graduated tube;
Δ S: the displacement of water droplet in the graduated tube.
Determination of Parameters: measure the volume of discharging gas, just can obtain the swell increment of asphalt foaming, thereby can calculate the asphalt foaming expansivity; Discharge gas volume and time relation through measuring again, just can obtain the half life period of asphalt foaming.
The blowing temperature of pitch is a controlling index, so test the time should have efficient temperature control.For making things convenient for the pitch heating, better control heating-up temperature, this method of testing adopts the electromagnetic oven heating device.Adopt the benefit of electromagnetic oven heating device to have: not only can Fast Heating pitch, and also heating can not produce waste heat after finishing yet, and the carrying out of convenient test can not produce big test error simultaneously yet.Before on-test, with 5 pressurizations of 16 pairs of water tanks of supercharge pump, purpose is that the pressure of solution water filling is not enough, and water can not be injected into the situation in the heated bitumen.Because heated bitumen itself has certain denseness, the normal pressure water filling can not be injected into water in the heated bitumen fully; And; The water of not injecting in the pitch can evaporate at asphalt surface, can produce additional water vapour pressure, will inevitably strengthen the amount of exercise of water droplet in graduated tube; Directly test result is exerted an influence; Make test result bigger than normal,, should make water all be injected in the heated bitumen as much as possible so need strict control jetting; For this reason, strengthen jetting pressure, reduce the water loss of jetting, guarantee the accuracy of testing.
The sealing property of proving installation determines that also can test successful; Be the sealing property of assurance device, add a resistant to elevated temperatures silica gel sealing ring in the inboard of gland 9, because the effect of the extruding of clasp 10; Make foaming ware 3, silica gel sealing ring, gland 9 threes stick together closely; The common guarantee sealing property makes the foaming of pitch in an airtight container, carry out fully, has also guaranteed that the gas of discharging is discharged to the motion that promotes water droplet in the graduated tube fully simultaneously.For producing the effect of good foaming, adopt special shower nozzle; Water in the water tank behind solenoid valve 6, water inlet pipe 7 and special shower nozzle, produces the thin water of three notes even, at a high speed from water outlet needle tubing 19 and annotates under the effect of high pressure; After solenoid valve 6 cut out, water just stopped injection.Because the existence of solenoid valve 6, can realize quick water flowing and cut off the water supply, and control the jetting amount through the time interval of electronic controller controls, to guarantee foaming effect.The overall process of quick high-pressure jetting is accomplished in the cooperation of water tank 5, solenoid valve 6 and special shower nozzle jointly.During asphalt foaming, the volume of asphalt membrane parcel increases gradually, and the gas around certainly will pushing moves in graduated tube 12, and the variation of the volume of asphalt foaming like this can be in time, show through graduated tube 12 accurately.For preventing the excessive generation of delaying that causes the volume change reaction of sealed volume, the volume of foaming ware 4 should reduce the space of the outer shared container of gas of asphalt membrane as much as possible near the volume behind the asphalt foaming; Also should reduce simultaneously the length of communicating pipe 13.
The time ratio of whole foaming process is shorter, and the temperature in the closed container can be similar to thinks constant, and the test figure of gained is not done correction, directly obtains the expansivity and the half life period of foamed asphalt.
Provide embodiments of the invention below: the test pitch that takes by weighing 30 grams is poured foaming ware 3 into, and electromagnetic oven heating is with the heating-up temperature of thermometer measure pitch; When being added to blowing temperature (about 160 ℃); Transfer to the foaming ware 3 that heated bitumen is housed on the vessel guide rail 15 of device with crucible tongs, and be advanced on the Table vessel holder 4, open the scavenging air valve 14 in the gland 9; Pull and compress clasp 10, lid gland 9.Stop moments later (the stable gas pressure in the ware of waiting to foam; The inside and outside pressure of reaction vessel is equated); Close scavenging air valve 14; Let solenoid valve 6 energisings in a flash, the water in the water tank 5 begins to foam through the pitch (pressurizeing with the supercharge pump feed-tank before the test) of aqueduct 7 and special shower nozzle moment injection heat like this.In seeing graduated tube 12, just pick up counting during the water droplet setting in motion simultaneously, and write down initial scale value L with stopwatch
0,, and when beginning to return, write down the scale value L in this moment when the water droplet stop motion
1With time t
0, when numerical value reduces to (L
1-L
0)/2 o'clock are write down the time t in this moment once more
1, calculate relevant performance testing index through relevant formula then, i.e. frothing percentage of foamed asphalt (expansivity) and half life period.
Computing formula is described as follows:
Frothing percentage (expansivity) W=(L
1-L
0) * A
0/ V
0
V
0＝m
0/ρ
Wherein: W: the expansivity of foamed asphalt;
L
1: the maximum scale value reading of graduated tube;
L
0: the initial scale value reading of graduated tube before the test;
A
0: the xsect of graduated tube is designed to 1cm
2
V
0: the volume of experiment pitch;
m
0: the quality of experiment pitch;
ρ: the density of experiment pitch.
Half life period: Δ T=t
1-t
0
Wherein: Δ T: the foaming half life period of foamed asphalt;
t
1: the scale value of graduated tube is (L
1-L
0The stop watch figures of)/2 o'clock;
t
0: the scale value L of graduated tube
1The time stop watch figures.
Water requirement: M=3 * v
0* Δ t * A
1* ρ
w
Wherein: M: the foaming water requirement of foamed asphalt;
v
0: effluxvelocity, by setting before the test;
Δ t: the jet time, by setting before the test;
A
1: the cross-sectional area in single jetting hole;
ρ
w: the density of water.
Instance 1: take by weighing the test pitch of 30g, be heated to 160 ℃, simultaneously be added to 0.2MPa to the pressure in the water tank, electromagnetic valve switch is set at 2s (2 seconds) interval time, and effluxvelocity is set at 5m/s, begins to test.
The gained data are following:
L
0＝1.5，L
1＝403.8，t
0＝36，t
1＝49。
Then
Water requirement is: M=3 * v
0* Δ t * A
1* ρ
w=3 * 5 * 2 * 0.3 * 1=9g
Frothing percentage (expansivity): W=(L
1-L
0) * A
0/ V
0
＝(403.8-1.5)×1/(30/1.15)
＝15.4
Half life period: Δ T=t
1-t
0=49-36=13s (13 seconds)
Instance 2: take by weighing the test pitch of 50g, be heated to 160 ℃, simultaneously be added to 0.2MPa to the pressure in the water tank, electromagnetic valve switch is set at 3s (3 seconds) interval time, and effluxvelocity is set at 5m/s, begins to test.
The gained data are following:
L
0＝2.0，L
1＝680.8，t
0＝62，t
1＝75。
Then
Water requirement is: M=3 * v
0* Δ t * A
1* ρ
w=3 * 5 * 3 * 0.3 * 1=13.5g
Frothing percentage (expansivity): W=(L
1-L
0) * A
0/ V
0
＝(680.8-2)×1/(50/1.15)
＝15.6
Half life period: Δ T=t
1-t
0=75-62=13s (13 seconds)
Instance 3: take by weighing the test pitch of 80g, be heated to 160 ℃, simultaneously be added to 0.2MPa to the pressure in the water tank, electromagnetic valve switch is set at 5s (5 seconds) interval time, and effluxvelocity is set at 5m/s, begins to test.
The gained data are following:
L
0＝1.2，L
1＝1028.8，t
0＝87，t
1＝101。
Then
Water requirement is: M=3 * v
0* Δ t * A
1* ρ
w=3 * 5 * 5 * 0.3 * 1=22.5g
Frothing percentage (expansivity): W=(L
1-L
0) * A
0/ V
0
＝(1028.8-1.2)×1/(80/1.15)
＝14.7
Half life period: Δ T=t
1-t
0=101-87=14s (14 seconds)
Claims (1)
1. foamed asphalt foam performance proving installation; It is characterized in that: it comprises base (1), ascending pipe (2), Table vessel holder (4), water tank (5), water inlet pipe (7), support (8), gland (9), compresses clasp (10), screw rod (11), graduated tube (12), wireway (13) and supercharge pump (16); On the described base (1), be fixed with Table vessel holder (4), water tank (5), support (8) and supercharge pump (16), water tank (5) is communicated with supercharge pump (16) through ascending pipe (2); One end of water inlet pipe (7) is communicated with water tank (5); Shower nozzle in the other end and the gland (9) is communicated with, compress clasp (10) and screw rod (11) gland (9) be pressed on support (8) below, graduated tube (12) is fixed on the support (8); It is communicated with foaming ware (3) through wireway (13), and scavenging air valve (14) also is installed on the gland (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010277430XA CN101975716B (en) | 2010-09-10 | 2010-09-10 | Device for testing foaming performance of foam asphalt |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010277430XA CN101975716B (en) | 2010-09-10 | 2010-09-10 | Device for testing foaming performance of foam asphalt |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101975716A CN101975716A (en) | 2011-02-16 |
| CN101975716B true CN101975716B (en) | 2012-01-11 |
Family
ID=43575619
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201010277430XA Expired - Fee Related CN101975716B (en) | 2010-09-10 | 2010-09-10 | Device for testing foaming performance of foam asphalt |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101975716B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102230932B (en) * | 2011-04-20 | 2014-04-02 | 北京科路泰技术有限公司 | Method for determining optimal foaming parameter of foamed bitumen |
| CN102230873B (en) * | 2011-04-20 | 2012-10-24 | 北京科路泰技术有限公司 | Method for determining actual maximum expansion rate of foamed asphalt |
| CN103353519A (en) * | 2013-07-04 | 2013-10-16 | 华侨大学 | Asphalt foaming machine for preparing foamed asphalt in laboratory and foaming method thereof |
| CN110736679A (en) * | 2019-10-25 | 2020-01-31 | 安徽省新方尊自动化科技有限公司 | foamed aluminum foaming agent gas evolution amount precision detection device |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1058603A (en) * | 1990-07-24 | 1992-02-12 | 陶氏化学公司 | In making the liquid of polymer foam, add whipping agent and measure the apparatus and method of its volume of mixture expansion potentiality |
| US5285674A (en) * | 1991-06-18 | 1994-02-15 | Spuhl Ag | Measurement device for detecting gas charge of a plastic component |
| CN201284636Y (en) * | 2008-11-07 | 2009-08-05 | 西南石油大学 | Circulating foam simulation experiment apparatus |
| CN101701902A (en) * | 2009-11-20 | 2010-05-05 | 同济大学 | Theoretical measurement method for expansivity and half-life period of foamed asphalt |
-
2010
- 2010-09-10 CN CN201010277430XA patent/CN101975716B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1058603A (en) * | 1990-07-24 | 1992-02-12 | 陶氏化学公司 | In making the liquid of polymer foam, add whipping agent and measure the apparatus and method of its volume of mixture expansion potentiality |
| US5285674A (en) * | 1991-06-18 | 1994-02-15 | Spuhl Ag | Measurement device for detecting gas charge of a plastic component |
| CN201284636Y (en) * | 2008-11-07 | 2009-08-05 | 西南石油大学 | Circulating foam simulation experiment apparatus |
| CN101701902A (en) * | 2009-11-20 | 2010-05-05 | 同济大学 | Theoretical measurement method for expansivity and half-life period of foamed asphalt |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101975716A (en) | 2011-02-16 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101975716B (en) | Device for testing foaming performance of foam asphalt | |
| CN103245773B (en) | Instrument and method for testing volume change of cement slurry for well cementation | |
| CN106769341B (en) | A kind of rocks sample preparation device and preparation method containing blind joint | |
| CN106121601A (en) | Foam flooding physical simulation device and method | |
| CN102505608A (en) | Method for preparing foamed asphalt | |
| CN202837144U (en) | Resin/fiber wettability testing device | |
| CN203440048U (en) | Device capable of accurately controlling liquid filling amount | |
| CN115290533A (en) | Centrifugal model test device and method for simulating soil body permeation | |
| CN110595931B (en) | Method and device for automatically monitoring suspended load sediment by displacement method | |
| CN210639168U (en) | Temperature control type penetration consolidation cross test device | |
| CN106124275B (en) | A kind of production method and device of seabed gassiness bury | |
| CN105954169A (en) | Measuring method and measuring system for thickness-direction steady-state permeation rate of fiber fabric | |
| CN103439235A (en) | Method for measuring permeability of different flat-plate fiber preformed bodies | |
| CN203587465U (en) | Vacuum-filtration-type mortar water-retention rate testing device | |
| CN209432221U (en) | A kind of foamed asphalt volume measuring device | |
| CN111196047A (en) | Automatic accurate ratio and monitored control system | |
| CN209191350U (en) | A kind of resin vacuum defoaming device of auxiliary deaeration unit in parallel | |
| CN201844098U (en) | Steam leakage-prevention relief valve | |
| CN202141668U (en) | Plastic concrete permeability tester | |
| CN201676782U (en) | Special foaming gun of outer heat-insulation system for thin plastering of polystyrene plate | |
| CN110470515A (en) | A kind of non-diagenesis hydrate flour sand core producing device and method | |
| CN202337564U (en) | Measuring-blanking device | |
| CN204211798U (en) | For the measuring apparatus of charging material of titanium tetrachloride | |
| CN213875340U (en) | Fluidity evaluation mold for polyurethane foaming composite material | |
| CN202082405U (en) | Dripping-preventing intermittent flow valve |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120111 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |