CN106990040A - Temperature and the lower asphalt and aggregate adhesion experimental rig of brine coupling effect and method - Google Patents
Temperature and the lower asphalt and aggregate adhesion experimental rig of brine coupling effect and method Download PDFInfo
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- CN106990040A CN106990040A CN201710380624.4A CN201710380624A CN106990040A CN 106990040 A CN106990040 A CN 106990040A CN 201710380624 A CN201710380624 A CN 201710380624A CN 106990040 A CN106990040 A CN 106990040A
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- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
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- G01N19/04—Measuring adhesive force between materials, e.g. of sealing tape, of coating
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Abstract
The invention discloses a kind of temperature and the lower asphalt and aggregate adhesion experimental rig of brine coupling effect and method, including controllable reservoir, controller and the piston cylinder being arranged in controllable reservoir, operating room, filter screen, piston, piston rod, the drive device for driving piston rod and for carrying out spacing position-limit mechanism to piston rod, the device and method realizes that the quantization that temperature acts on lower asphalt and aggregate adhesion with brine coupling is tested.
Description
Technical field
The invention belongs to road engineering technical field, it is related to a kind of temperature and sticks with the lower asphalt and aggregate of brine coupling effect
Property experimental rig and method.
Background technology
Bituminous paving is widely used in making high grade pavement because of its excellent performance.In China seasonal frost region, due to winter
Snow or easy initiation traffic accident icy on road, it is extensive as a kind of means of fast snow melting ice to this spreading deicer salts
Using.However, the infringement that long-term use deicer salts road pavement is caused also can not be ignored, in this regard, many researchers have done substantial amounts of
Experiment and theoretical research, it is concentrated mainly on influence of the deicer salts to Asphalt Mixture Performance.However, deicer salts are to pitch
Adhesion influence with gathering materials significantly quantifies its influence degree there is presently no device with index, therefore, research temperature and salt
The lower asphalt and aggregate adhesion experimental rig of water coincidence effect and method have great importance.
The content of the invention
It is an object of the invention to the shortcoming for overcoming above-mentioned prior art, there is provided at a kind of temperature and brine coupling effect
Asphalt and aggregate adhesion experimental rig and method, the device and method realize temperature and the lower asphalt and aggregate of brine coupling effect
The assessment of adhesion.
To reach above-mentioned purpose, temperature of the present invention is filled with the lower asphalt and aggregate adhesion experiment of brine coupling effect
Put including controllable reservoir, controller and the piston cylinder being arranged in controllable reservoir, operating room, filter screen, piston, piston rod,
For driving the drive device of piston rod and for carrying out spacing position-limit mechanism to piston rod；
Piston cylinder is located in operating room, and the bottom opening of piston cylinder is connected with the upper opening of operating room, and filter screen is located at
In piston cylinder, the discharge outlet of working chamber side and water sucking mouth are connected with controllable reservoir, and piston is located in piston cylinder, piston rod
Lower end be inserted in piston cylinder and be connected with piston, the upper end of piston rod is connected with drive device and position-limit mechanism, treats
Test test specimen to be located on filter screen, the control end of the control end of drive device and controllable reservoir is connected with controller.
The top of controllable reservoir is provided with water filling port, and the water outlet of controllable temperature water tank bottom is provided with outlet valve.
The discharge outlet of operating room is connected by drainpipe with controllable reservoir, and draining is provided with the discharge outlet of operating room
Valve, the water sucking mouth of operating room is connected by suction hose with controllable reservoir, and the water sucking mouth of operating room is provided with suction valve.
Drive device includes runner, crank, connecting rod, crosshead and the motor for driving runner, and motor and runner are set
In the top of controllable reservoir, one end of crank is connected with runner, and the other end of crank is connected by connecting rod with crosshead
Connect, piston rod is connected with crosshead.
Position-limit mechanism includes chute, connection fork and pulley, wherein, the top of controllable reservoir is fixed in the upper end of chute,
One end of connection fork is connected with crosshead, and the other end of connection fork is connected with pulley, and pulley is embedded in chute.
It is connected through a screw thread between crosshead and piston rod.
Connection fork between crosshead with mutually welding.
Temperature of the present invention comprises the following steps with the lower asphalt and aggregate adhesion test method of brine coupling effect：
1) to gathering materials and pitch is heated, then it will gather materials and pour into pitch, and be placed into glass plate and spread out after stirring
Open, and be cooled to room temperature, obtain test specimen to be tested；
2) salt solution is injected into controllable reservoir, then adjusts the mesohalobic temperature of controllable reservoir, then by examination to be tested
Part, which is placed into controllable reservoir, to be soaked；
3) test specimen to be tested is taken out from controllable reservoir, then dries the water of surface of test piece to be tested, make examination to be tested
Part is in saturated dry surface, then weighs the quality m of test specimen to be testedf；
4) test specimen to be tested is dried, then weighs the quality m of test specimen to be testeda；
5) test specimen to be tested is placed into controllable reservoir and soaked, then test specimen to be tested is placed into polybag, and
Salt solution is added into polybag, then the sack of colligation polybag, then polybag is placed into controllable reservoir；
6) temperature of controllable temperature Water in Water Tanks is adjusted, is freezed test specimen to be tested, then solved test specimen to be tested
Freeze, then test specimen to be tested is placed into filter screen；
7) drive device driving piston is moved up and down, so that test specimen to be tested is acted on by dynamic water, works as drive device
After the preset time that works, drive device is stopped, now take out test specimen to be tested；
8) test specimen to be tested is dried, then weighs the quality m of test specimen to be testedb, then the water absorption rate of test specimen to be tested
ωxFor：The rate of water absorption v of test specimen to be tested isWherein, t be step 2) in wait to try
Test soak time of the test specimen in controllable reservoir；The mass loss rate γ of test specimen to be tested is：
9) according to step 8) the obtained water absorption rate ω of test specimen to be testedx, the rate of water absorption v of test specimen to be tested and to be tested
The mass loss rate γ of test specimen assesses the adhesion that temperature acts on lower asphalt and aggregate with brine coupling.
The invention has the advantages that：
Temperature of the present invention is with the lower asphalt and aggregate adhesion experimental rig of brine coupling effect and method specific
During operation, test specimen to be tested is first prepared, then test specimen to be tested is placed into salt solution soaked, and controls the temperature of salt solution,
Test specimen to be tested is dried again, then test specimen to be tested is freezed again and defrosting processing, then filled again by driving
Put driving piston to move up and down, test specimen to be tested is acted on by dynamic water, so as to according to test specimen matter to be tested in experiment
The change of amount obtains the water absorption rate of test specimen to be tested, tests the rate of water absorption of test specimen and the mass loss rate of test specimen to be tested, so
Afterwards according to the water absorption rate of test specimen to be tested, test test specimen rate of water absorption and test specimen to be tested mass loss rate assess temperature with
The adhesion of the lower asphalt and aggregate of brine coupling effect, i.e., the water absorption rate of test specimen to be tested is bigger, illustrates within the regular hour
Water suction is more, and the turgor pressure produced during mercury dropped is bigger, and asphalt and aggregate are more easy to be peeling-off；The water suction of test specimen to be tested
Speed is bigger, then water suction is more in the short time, and the adhesion to asphalt and aggregate is more unfavorable；The mass loss of test specimen to be tested
Rate is bigger, and asphalt and aggregate are more easily peelable, then Adhesion property is poorer, so as to realize temperature and the lower pitch of brine coupling effect and collection
Expect the quantization test of adhesion.
Brief description of the drawings
Fig. 1 is structural representation of the invention.
Wherein, 1 be outlet valve, 2 be drainpipe, 3 be draining valve, 4 be controllable reservoir, 5 be pulley, 6 be connection fork, 7
For chute, 8 be water filling port, 9 be runner, 10 be crank, 11 be connecting rod, 12 be crosshead, 13 be piston rod, 14 be piston cylinder,
15 it is piston, 16 be filter screen, 17 be operating room, 18 be suction valve, 19 is suction hose.
Embodiment
The present invention is described in further detail below in conjunction with the accompanying drawings：
Temperature of the present invention includes controllable warm water with the lower asphalt and aggregate adhesion experimental rig of brine coupling effect
Case 4, controller and the piston cylinder 14 being arranged in controllable reservoir 4, operating room 17, filter screen 16, piston 15, piston rod 13, use
In the drive device of driving piston rod 13 and for carrying out spacing position-limit mechanism to piston rod 13；Piston cylinder 14 is located at work
On room 17, the bottom opening of piston cylinder 14 is connected with the upper opening of operating room 17, and filter screen 16 is located in piston cylinder 14, work
The discharge outlet of the side of room 17 and water sucking mouth are connected with controllable reservoir 4, and piston 15 is located in piston cylinder 14, under piston rod 13
End is inserted in piston cylinder 14 and is connected with piston 15, and the upper end of piston rod 13 is connected with drive device and position-limit mechanism,
Test specimen to be tested is located on filter screen 16, and the control end of the control end of drive device and controllable reservoir 4 is connected with controller.
The top of controllable reservoir 4 is provided with water filling port 8, and the water outlet of the controllable bottom of reservoir 4 is provided with outlet valve 1；Work
The discharge outlet for making room 17 is connected by drainpipe 2 with controllable reservoir 4, and provided with draining valve 3 at the discharge outlet of operating room 17,
The water sucking mouth of operating room 17 is connected by suction hose 19 with controllable reservoir 4, and the water sucking mouth of operating room 17 is provided with water suction
Valve 18.
Drive device include runner 9, crank 10, connecting rod 11, crosshead 12 and the motor for driving runner 9, motor and
Runner 9 is arranged at the top of controllable reservoir 4, and one end of crank 10 is connected with runner 9, and the other end of crank 10 passes through connection
Bar is connected with crosshead 12, and piston rod 13 is connected with crosshead 12.
Position-limit mechanism includes chute 7, connection fork 6 and pulley 5, wherein, controllable reservoir 4 is fixed in the upper end of chute 7
Top, one end of connection fork 6 is connected with crosshead 12, and the other end of connection fork 6 is connected with pulley 5, and pulley 5 is embedded in cunning
In groove 7.
It is connected through a screw thread between crosshead 12 and piston rod 13；Mutually welded between connection fork 6 and crosshead 12.
Temperature of the present invention comprises the following steps with the lower asphalt and aggregate adhesion test method of brine coupling effect：
1) to gathering materials and pitch is heated, then it will gather materials and pour into pitch, and be placed into glass plate and spread out after stirring
Open, and be cooled to room temperature, obtain test specimen to be tested；
2) salt solution is injected into controllable reservoir 4, then adjusts the mesohalobic temperature of controllable reservoir 4, then will be to be tested
Test specimen, which is placed into controllable reservoir 4, to be soaked；
3) test specimen to be tested is taken out from controllable reservoir 4, then dries the water of surface of test piece to be tested, make examination to be tested
Part is in saturated dry surface, then weighs the quality m of test specimen to be testedf；
4) test specimen to be tested is dried, then weighs the quality m of test specimen to be testeda；
5) test specimen to be tested is placed into controllable reservoir 4 and soaked, then test specimen to be tested is placed into polybag, and
Salt solution is added into polybag, then the sack of colligation polybag, then polybag is placed into controllable reservoir 4；
6) temperature of the controllable reclaimed water of reservoir 4 is adjusted, is freezed test specimen to be tested, then solved test specimen to be tested
Freeze, then test specimen to be tested is placed into filter screen 16；
7) drive device driving piston 15 is moved up and down, so that test specimen to be tested is acted on by dynamic water, when driving dress
Put after work preset time, drive device is stopped, now take out test specimen to be tested；
8) test specimen to be tested is dried, then weighs the quality m of test specimen to be testedb, then the water absorption rate of test specimen to be tested
ωxFor：The rate of water absorption v of test specimen to be tested isWherein, t be step 2) in wait to try
Test soak time of the test specimen in controllable reservoir 4；The mass loss rate γ of test specimen to be tested is：
9) according to step 8) the obtained water absorption rate ω of test specimen to be testedx, the rate of water absorption v of test specimen to be tested and to be tested
The mass loss rate γ of test specimen assesses the adhesion that temperature acts on lower asphalt and aggregate with brine coupling.
The water absorption rate of test specimen to be tested is bigger, illustrates to absorb water within the regular hour more, what is produced during mercury dropped is swollen
Swelling pressure is bigger, and asphalt and aggregate are more easy to be peeling-off, and the rate of water absorption of test specimen to be tested is bigger, then water suction is got in the short time
Many, the adhesion to asphalt and aggregate is more unfavorable.The mass loss rate of test specimen to be tested is bigger, and asphalt and aggregate are more easily peelable,
Then Adhesion property is poorer.
The initial saline concentration and temperature of above-mentioned experiment can regulate and control as needed, in addition, pure water weight should be added in water tank
Multiple above-mentioned experiment, can obtain the size of water absorption rate under the conditions of pure water, rate of water absorption and mass loss rate.In this, as to having a competition
Test, by analysis, can obtain the difference that temperature is acted on brine coupling and pure water effect influences on asphalt and aggregate adhesion.
Claims (8)
1. a kind of temperature and the lower asphalt and aggregate adhesion experimental rig of brine coupling effect, it is characterised in that including controllable temperature
Water tank (4), controller and the piston cylinder (14) being arranged in controllable reservoir (4), operating room (17), filter screen (16), piston
(15), piston rod (13), the drive device for driving piston rod (13) and for carrying out spacing limit to piston rod (13)
Position mechanism；
Piston cylinder (14) is located on operating room (17), and the bottom opening of piston cylinder (14) is connected with the upper opening of operating room (17)
Logical, filter screen (16) is located in piston cylinder (14), and the discharge outlet of operating room (17) side and water sucking mouth are connected with controllable reservoir (4)
Logical, piston (15) is located in piston cylinder (14), the lower end of piston rod (13) be inserted in piston cylinder (14) and with piston (15) phase
Connection, the upper end of piston rod (13) is connected with drive device and position-limit mechanism, and test specimen to be tested is located on filter screen (16), driving
The control end of device and the control end of controllable reservoir (4) are connected with controller.
2. temperature according to claim 1 and brine coupling effect lower asphalt and aggregate adhesion experimental rig, its feature
It is, the top of controllable reservoir (4) is provided with water filling port (8), and the water outlet of controllable reservoir (4) bottom is provided with outlet valve
(1)。
3. temperature according to claim 1 and brine coupling effect lower asphalt and aggregate adhesion experimental rig, its feature
It is, the discharge outlet of operating room (17) is connected by drainpipe (2) with controllable reservoir (4), and the draining of operating room (17)
Draining valve (3) is provided with mouthful, the water sucking mouth of operating room (17) is connected by suction hose (19) with controllable reservoir (4), and work
The water sucking mouth for making room (17) is provided with suction valve (18).
4. temperature according to claim 1 and brine coupling effect lower asphalt and aggregate adhesion experimental rig, its feature
It is, drive device includes runner (9), crank (10), connecting rod (11), crosshead (12) and the motor for driving runner (9),
Motor and runner (9) are arranged at the top of controllable reservoir (4), and one end of crank (10) is connected with runner (9), crank (10)
The other end be connected by connecting rod with crosshead (12), piston rod (13) is connected with crosshead (12).
5. temperature according to claim 4 and brine coupling effect lower asphalt and aggregate adhesion experimental rig, its feature
It is, position-limit mechanism includes chute (7), connection fork (6) and pulley (5), wherein, controllable warm water is fixed in the upper end of chute (7)
The top of case (4), one end of connection fork (6) is connected with crosshead (12), and the other end of connection fork (6) is connected with pulley (5)
Connect, pulley (5) is embedded in chute (7).
6. temperature according to claim 4 and brine coupling effect lower asphalt and aggregate adhesion experimental rig, its feature
It is, is connected through a screw thread between crosshead (12) and piston rod (13).
7. temperature according to claim 5 and brine coupling effect lower asphalt and aggregate adhesion experimental rig, its feature
It is, is mutually welded between connection fork (6) and crosshead (12).
8. a kind of temperature and the lower asphalt and aggregate adhesion test method of brine coupling effect, it is characterised in that will based on right
The temperature and the lower asphalt and aggregate adhesion experimental rig of brine coupling effect described in 1 are sought, is comprised the following steps：
1) to gathering materials and pitch is heated, then it will gather materials and pour into pitch, and be placed into glass plate and spread out after stirring, and
Room temperature is cooled to, test specimen to be tested is obtained；
2) the injection salt solution into controllable reservoir (4), then adjust controllable reservoir (4) mesohalobic temperature, then will be to be tested
Test specimen is placed into immersion in controllable reservoir (4)；
3) test specimen to be tested is taken out from controllable reservoir (4), then dries the water of surface of test piece to be tested, make test specimen to be tested
In saturated dry surface, the quality m of test specimen to be tested is then weighedf；
4) test specimen to be tested is dried, then weighs the quality m of test specimen to be testeda；
5) test specimen to be tested is placed into immersion in controllable reservoir (4), then test specimen to be tested is placed into polybag, and to
Salt solution is added in polybag, then the sack of colligation polybag, then polybag is placed into controllable reservoir (4)；
6) temperature of controllable reservoir (4) reclaimed water is adjusted, is freezed test specimen to be tested, then solved test specimen to be tested
Freeze, then test specimen to be tested is placed into filter screen (16)；
7) drive device driving piston (15) is moved up and down, so that test specimen to be tested is acted on by dynamic water, works as drive device
After the preset time that works, drive device is stopped, now take out test specimen to be tested；
8) test specimen to be tested is dried, then weighs the quality m of test specimen to be testedb, then the water absorption rate ω of test specimen to be testedxFor：The rate of water absorption v of test specimen to be tested isWherein, t be step 2) in test specimen to be tested
Soak time in controllable reservoir (4)；The mass loss rate γ of test specimen to be tested is：
9) according to step 8) the obtained water absorption rate ω of test specimen to be testedx, test specimen to be tested rate of water absorption v and test specimen to be tested
Mass loss rate γ assess the adhesion that temperature and brine coupling act on lower asphalt and aggregate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710380624.4A CN106990040B (en) | 2017-05-25 | 2017-05-25 | Temperature and brine coupling act on lower asphalt and aggregate adhesion experimental rig and method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710380624.4A CN106990040B (en) | 2017-05-25 | 2017-05-25 | Temperature and brine coupling act on lower asphalt and aggregate adhesion experimental rig and method |
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| Publication Number | Publication Date |
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| CN106990040A true CN106990040A (en) | 2017-07-28 |
| CN106990040B CN106990040B (en) | 2019-09-17 |
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| CN201710380624.4A Active CN106990040B (en) | 2017-05-25 | 2017-05-25 | Temperature and brine coupling act on lower asphalt and aggregate adhesion experimental rig and method |
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