CN106990040B - Temperature and brine coupling act on lower asphalt and aggregate adhesion experimental rig and method - Google Patents
Temperature and brine coupling act on lower asphalt and aggregate adhesion experimental rig and method Download PDFInfo
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- CN106990040B CN106990040B CN201710380624.4A CN201710380624A CN106990040B CN 106990040 B CN106990040 B CN 106990040B CN 201710380624 A CN201710380624 A CN 201710380624A CN 106990040 B CN106990040 B CN 106990040B
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- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N19/00—Investigating materials by mechanical methods
- 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 brine coupling to act on lower asphalt and aggregate adhesion experimental rig and method, including controllable reservoir, controller and the piston cylinder being set in controllable reservoir, operating room, strainer, piston, piston rod, the driving device for driving piston rod and the position-limit mechanism for being limited to piston rod, which realizes that temperature and brine coupling act on the quantization test of lower asphalt and aggregate adhesion.
Description
Technical field
The invention belongs to technical field of road engineering, it is related to a kind of temperature and acts on lower asphalt and aggregate with brine coupling sticking
Property experimental rig and method.
Background technique
Bituminous pavement is widely used in making high grade pavement because of its excellent performance.In China seasonal frost region, due to winter
It snows or easy initiation traffic accident icy on road, it is extensive as a kind of means of fast snow melting ice to dispense deicer salts to this
Using.It also can not be ignored however, being used for a long time and being damaged caused by deicer salts road pavement, in this regard, many researchers have done largely
Test and theoretical research, are concentrated mainly on influence of the deicer salts to Asphalt Mixture Performance.However, deicer salts are to pitch
It is influenced with the adhesion gathered materials significantly, there is presently no devices and index to quantify its influence degree, for this purpose, research temperature and salt
Water coincidence acts on lower asphalt and aggregate adhesion experimental rig and method has great importance.
Summary of the invention
It is an object of the invention to overcome the above-mentioned prior art, provide at a kind of temperature and brine coupling effect
Asphalt and aggregate adhesion experimental rig and method, the device and method realize that temperature and brine coupling act on lower asphalt and aggregate
The assessment of adhesion.
In order to achieve the above objectives, temperature of the present invention and brine coupling act on lower asphalt and aggregate adhesion test and fill
Set including controllable reservoir, controller and the piston cylinder being set in controllable reservoir, operating room, strainer, piston, piston rod,
Position-limit mechanism for driving the driving device of piston rod and for being limited 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 strainer 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 driving device and position-limit mechanism, to
Test test specimen is located on strainer, and the control terminal of the control terminal of driving device and controllable reservoir is connected with controller.
The top of controllable reservoir is equipped with water filling port, and the water outlet of controllable temperature water tank bottom is equipped with outlet valve.
The discharge outlet of operating room is connected by drainpipe with controllable reservoir, and draining is equipped at the discharge outlet of operating room
The water sucking mouth of valve, operating room is connected by suction hose with controllable reservoir, and the water sucking mouth of operating room is equipped with suction valve.
Driving device includes runner, crank, connecting rod, crosshead and the motor for driving runner, and motor and runner are arranged
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
It connects, piston rod is connected with crosshead.
Position-limit mechanism includes sliding slot, connecting fork and pulley, wherein and the top of controllable reservoir is fixed in the upper end of sliding slot,
One end of connecting fork is connected with crosshead, and the other end of connecting fork is connected with pulley, and pulley is embedded in sliding slot.
It is connected through a screw thread between crosshead and piston rod.
It is mutually welded between connecting fork and crosshead.
Temperature of the present invention and brine coupling act on lower asphalt and aggregate adhesion test method the following steps are included:
1) to gathering materials and pitch heats, then it will gather materials and pour into pitch, and be placed into glass plate spread out after mixing evenly
It opens, and is cooled to room temperature, obtain test specimen to be tested；
2) salt water 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 impregnated；
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 is impregnated, then test specimen to be tested is placed into polybag, and
Salt water is added into polybag, then binds the sack of polybag, then polybag is placed into controllable reservoir；
6) temperature for adjusting controllable temperature Water in Water Tanks, freezes test specimen to be tested, then solve test specimen to be tested
Freeze, then test specimen to be tested is placed into strainer；
7) driving device driving piston moves up and down, so that test specimen to be tested be made to be worked as driving device by the effect of dynamic water
After the preset time that works, so that driving device is stopped working, take out test specimen to be tested at this time；
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
ωxAre as follows:The rate of water absorption v of test specimen to be tested isWherein, t be step 2) in
Test soaking time of the test specimen in controllable reservoir；The mass loss rate γ of test specimen to be tested are as follows:
9) the water absorption rate ω of the test specimen to be tested obtained according to step 8)x, the rate of water absorption v of test specimen to be tested and to be tested
The mass loss rate γ assessment temperature and brine coupling of test specimen act on the adhesion of lower asphalt and aggregate.
The invention has the following advantages:
Temperature of the present invention acts on lower asphalt and aggregate adhesion experimental rig and method specific with brine coupling
When operation, test specimen to be tested is first prepared, then test specimen to be tested is placed into salt water and is impregnated, and control the temperature of salt water,
Test specimen to be tested is dried again, freezing then is carried out to test specimen to be tested again and defrosting is handled, then passes through driving dress again
It sets driving piston to move up and down, makes test specimen to be tested by the effect of dynamic water, so as to according to test specimen matter to be tested in test
The variation 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 assessment temperature with
Brine coupling acts on the adhesion of lower asphalt and aggregate, i.e., the water absorption rate of test specimen to be tested is bigger, illustrates within the regular hour
It absorbs water more, the turgor pressure that when mercury dropped generates is bigger, and the asphalt and aggregate the easy to be peeling-off；The water suction of test specimen to be tested
Rate is bigger, then water suction is more in the short time, more unfavorable to the adhesion of asphalt and aggregate；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, to realize that temperature and brine coupling act on lower pitch and collection
Expect the quantization test of adhesion.
Detailed description of the invention
Fig. 1 is the structural diagram of the present invention.
Wherein, 1 it is outlet valve, 2 be drainpipe, 3 be drain valve, 4 be controllable reservoir, 5 be pulley, 6 is connecting fork, 7
For sliding slot, 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 strainer, 17 be operating room, 18 be suction valve, 19 is suction hose.
Specific embodiment
The invention will be described in further detail with reference to the accompanying drawing:
It includes controllable warm water that temperature of the present invention and brine coupling, which act on lower asphalt and aggregate adhesion experimental rig,
Case 4, controller and the piston cylinder 14 being set in controllable reservoir 4, strainer 16, piston 15, piston rod 13, are used operating room 17
Driving device in driving piston rod 13 and position-limit mechanism for being limited 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 strainer 16 is located in piston cylinder 14, work
The discharge outlet of 17 side of room 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 driving device and position-limit mechanism,
Test specimen to be tested is located on strainer 16, and the control terminal of the control terminal of driving device and controllable reservoir 4 is connected with controller.
The top of controllable reservoir 4 is equipped with water filling port 8, and the water outlet of controllable 4 bottom of reservoir is equipped with outlet valve 1；Work
The discharge outlet for making room 17 is connected by drainpipe 2 with controllable reservoir 4, and drain valve 3 is equipped 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 equipped with water suction
Valve 18.
Driving device includes runner 9, crank 10, connecting rod 11, crosshead 12 and the motor for driving runner 9, motor and
Runner 9 is set to 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 sliding slot 7, connecting fork 6 and pulley 5, wherein controllable reservoir 4 is fixed in the upper end of sliding slot 7
The one end at top, connecting fork 6 is connected with crosshead 12, and the other end of connecting fork 6 is connected with pulley 5, and pulley 5 is embedded in cunning
In slot 7.
It is connected through a screw thread between crosshead 12 and piston rod 13；It is mutually welded between connecting fork 6 and crosshead 12.
Temperature of the present invention and brine coupling act on lower asphalt and aggregate adhesion test method the following steps are included:
1) to gathering materials and pitch heats, then it will gather materials and pour into pitch, and be placed into glass plate spread out after mixing evenly
It opens, and is cooled to room temperature, obtain test specimen to be tested；
2) salt water is injected into controllable reservoir 4, then adjusts the mesohalobic temperature of controllable reservoir 4, it then will be to be tested
Test specimen, which is placed into controllable reservoir 4, to be impregnated；
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 is impregnated, then test specimen to be tested is placed into polybag, and
Salt water is added into polybag, then binds the sack of polybag, then polybag is placed into controllable reservoir 4；
6) temperature for adjusting water in controllable reservoir 4, freezes test specimen to be tested, then solve test specimen to be tested
Freeze, then test specimen to be tested is placed into strainer 16；
7) driving device driving piston 15 moves up and down, to make test specimen to be tested by the effect of dynamic water, when driving fills
After setting work preset time, driving device is made to stop working, takes out test specimen to be tested at this time；
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
ωxAre as follows:The rate of water absorption v of test specimen to be tested isWherein, t be step 2) in
Test soaking time of the test specimen in controllable reservoir 4；The mass loss rate γ of test specimen to be tested are as follows:
9) the water absorption rate ω of the test specimen to be tested obtained according to step 8)x, the rate of water absorption v of test specimen to be tested and to be tested
The mass loss rate γ assessment temperature and brine coupling of test specimen act on the adhesion of lower asphalt and aggregate.
The water absorption rate of test specimen to be tested is bigger, illustrates to absorb water within the regular hour more, and when mercury dropped generates swollen
Swelling pressure is bigger, and the asphalt and aggregate the 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
It is more, it is more unfavorable to the adhesion of asphalt and aggregate.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 test can regulate and control as needed, in addition, pure water weight should be added in water tank
The size of water absorption rate under the conditions of pure water, rate of water absorption and mass loss rate can be obtained in multiple above-mentioned test.In this, as to having a competition
It tests, by analysis, temperature and brine coupling effect can be obtained and pure water acts on the difference influenced on asphalt and aggregate adhesion.
Claims (7)
1. a kind of temperature and brine coupling act on lower asphalt and aggregate adhesion test method, which is characterized in that based on temperature with
Brine coupling acts on lower asphalt and aggregate adhesion experimental rig, and the temperature acts on lower asphalt and aggregate with brine coupling and sticks
Property experimental rig includes controllable reservoir (4), controller and the piston cylinder (14) being set in controllable reservoir (4), operating room
(17), strainer (16), piston (15), piston rod (13), the driving device for driving piston rod (13) and for piston
The position-limit mechanism that bar (13) is limited；
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, strainer (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) it is interior and with piston (15) phase
Connection, the upper end of piston rod (13) are connected with driving device and position-limit mechanism, and test specimen to be tested is located on strainer (16), driving
The control terminal of device and the control terminal of controllable reservoir (4) are connected with controller；
The following steps are included:
1) to gathering materials and pitch heats, then it will gather materials and pour into pitch, and be placed into glass plate spread out after mixing evenly, and
It is cooled to room temperature, obtains test specimen to be tested；
2) salt water is injected into controllable reservoir (4), then adjusts controllable reservoir (4) mesohalobic temperature, it then will be to be tested
Test specimen, which is placed into controllable reservoir (4), to be impregnated；
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 controllable reservoir (4) and is impregnated, then test specimen to be tested is placed into polybag, and to
Salt water is added in polybag, then binds the sack of polybag, then polybag is placed into controllable reservoir (4)；
6) temperature for adjusting water in controllable reservoir (4), freezes test specimen to be tested, then solve test specimen to be tested
Freeze, then test specimen to be tested is placed into strainer (16)；
7) driving device driving piston (15) moves up and down, so that test specimen to be tested be made to be worked as driving device by the effect of dynamic water
After the preset time that works, so that driving device is stopped working, take out test specimen to be tested at this time；
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 testedxAre as follows:The rate of water absorption v of test specimen to be tested isWherein, t is examination to be tested in step 2)
Soaking time of the part in controllable reservoir (4)；The mass loss rate γ of test specimen to be tested are as follows:
9) the water absorption rate ω of the test specimen to be tested obtained according to step 8)x, test specimen to be tested rate of water absorption v and test specimen to be tested
Mass loss rate γ assessment temperature and brine coupling act on the adhesions of lower asphalt and aggregate.
2. temperature according to claim 1 and brine coupling act on lower asphalt and aggregate adhesion test method, feature
It is, the top of controllable reservoir (4) is equipped with water filling port (8), and the water outlet of controllable reservoir (4) bottom is equipped with outlet valve
(1)。
3. temperature according to claim 1 and brine coupling act on lower asphalt and aggregate adhesion test method, 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)
Drain valve (3) are equipped at 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 equipped with suction valve (18).
4. temperature according to claim 1 and brine coupling act on lower asphalt and aggregate adhesion test method, feature
It is, driving device includes runner (9), crank (10), connecting rod (11), crosshead (12) and the motor for driving runner (9),
Motor and runner (9) are set to the top of controllable reservoir (4), and one end of crank (10) is connected with runner (9), crank (10)
The other end be connected with crosshead (12) by connecting rod, piston rod (13) is connected with crosshead (12).
5. temperature according to claim 4 and brine coupling act on lower asphalt and aggregate adhesion test method, feature
It is, position-limit mechanism includes sliding slot (7), connecting fork (6) and pulley (5), wherein controllable warm water is fixed in the upper end of sliding slot (7)
The one end at the top of case (4), connecting fork (6) is connected with crosshead (12), and the other end of connecting fork (6) is connected with pulley (5)
It connects, pulley (5) is embedded in sliding slot (7).
6. temperature according to claim 4 and brine coupling act on lower asphalt and aggregate adhesion test method, 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 act on lower asphalt and aggregate adhesion test method, feature
It is, is mutually welded between connecting fork (6) and crosshead (12).
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| Application Number | Priority Date | Filing Date | Title |
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| 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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| 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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| CN106990040B true CN106990040B (en) | 2019-09-17 |
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| CN102279150A (en) * | 2011-06-23 | 2011-12-14 | 长安大学 | Road material corrosion testing machine |
| CN102539651A (en) * | 2011-12-15 | 2012-07-04 | 长安大学 | Snow melting service life predicting device for salt self-snow-melting road surface |
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