CN109085080A - Concrete anti-ice abrasion test device and test method - Google Patents
Concrete anti-ice abrasion test device and test method Download PDFInfo
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- CN109085080A CN109085080A CN201811195208.8A CN201811195208A CN109085080A CN 109085080 A CN109085080 A CN 109085080A CN 201811195208 A CN201811195208 A CN 201811195208A CN 109085080 A CN109085080 A CN 109085080A
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- 238000012360 testing method Methods 0.000 title claims abstract description 158
- 238000005299 abrasion Methods 0.000 title claims description 9
- 238000010998 test method Methods 0.000 title abstract description 9
- 239000007788 liquid Substances 0.000 claims abstract description 21
- 239000002826 coolant Substances 0.000 claims abstract description 20
- 239000011229 interlayer Substances 0.000 claims abstract description 11
- 230000006378 damage Effects 0.000 claims description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 10
- 230000003628 erosive effect Effects 0.000 claims description 7
- 238000000034 method Methods 0.000 claims description 6
- 238000004088 simulation Methods 0.000 claims description 6
- 239000002689 soil Substances 0.000 claims description 6
- 230000000694 effects Effects 0.000 claims description 5
- 229910000831 Steel Inorganic materials 0.000 claims description 3
- 230000006735 deficit Effects 0.000 claims description 3
- 238000012545 processing Methods 0.000 claims description 3
- 239000010959 steel Substances 0.000 claims description 3
- 238000011179 visual inspection Methods 0.000 claims description 3
- 208000027418 Wounds and injury Diseases 0.000 claims description 2
- 208000014674 injury Diseases 0.000 claims description 2
- 229910001220 stainless steel Inorganic materials 0.000 claims description 2
- 239000010935 stainless steel Substances 0.000 claims description 2
- 238000003287 bathing Methods 0.000 claims 1
- 238000005303 weighing Methods 0.000 claims 1
- 238000005516 engineering process Methods 0.000 description 4
- 238000002474 experimental method Methods 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 238000011156 evaluation Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 238000005498 polishing Methods 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 239000000741 silica gel Substances 0.000 description 2
- 229910002027 silica gel Inorganic materials 0.000 description 2
- 229960001866 silicon dioxide Drugs 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/56—Investigating resistance to wear or abrasion
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/02—Details
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- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
- Testing Resistance To Weather, Investigating Materials By Mechanical Methods (AREA)
Abstract
The present invention discloses a kind of concrete anti-ice wear performance experimental rig, including main body bottom plate, cryogenic thermostat water-bath.It is provided with test block hold-down support, ice bank sliding support on main body bottom plate, slides stationary annular low temperature ice bank on ice bank sliding support, toroidal cryogenic sink is made of outer tank body, inner tank body, is formed coolant liquid between interior outer tank body and is recycled interlayer.The fixed bracket of reciprocating engine, reciprocating engine speed-regulating switch, reciprocating engine is provided on main body bottom plate；Reciprocating engine is made of variable speed electric motors, particularly and eccentric rod, push-pull rod, reciprocating lever, and variable speed electric motors, particularly rotates axis connection eccentric rod, and eccentric rod connects push-pull rod, and push-pull rod connects reciprocating lever, and reciprocating lever connects annular Low-temperature Ice slot, and toroidal cryogenic sink is connect with cryogenic thermostat water-bath.The experimental rig and test method more accurately test concrete anti-ice wear performance.
Description
Technical field
The present invention relates to concrete test technical fields, more particularly to a kind of concrete anti-ice wear performance experimental rig
And test method.
Background technique
The phenomenon that stream is insulted and is referred to before river freezeup, and ice cube and river water flow together.Within the scope of global cold area, the winter
Season, incident stream Ling Wenti was inevitable.Sea ice can act on bridge, harbour, beacon and petroleum in ocean engineering
Platform, fresh ice can hit the concrete dam upstream face of reservoir, canal, river bridge pier.Floating ice swims on the water surface and can generate
Kinetic energy generates hydraulic structure and hits, rubs, so that concrete surface is worn, long-term accumulated ice damage by friction
It will cause hydraulic structure structure degradation, reduce durability and the safety of hydraulic structure.Therefore, in order to guarantee severe cold area water
The military service performance and used life of sharp engineering needs to assess and concrete anti-ice wear performance is tested and assessed.
Currently, having some for anti-ice abrasive wear experimental rig, two classes are broadly divided into, one is the U.S. and Japan respectively
Invention has the ice grinding machine of turntable, the concrete sample that ice cube touches rotation is tested, which easily causes sample not
Uniform load and experimental rig is excessive, cost are high.Another kind is to carry out ice-with shearing case apparatus according to Soil mechanics experiment design
The sliding test of concrete, although the device is simple, operating process is by following disadvantage: (1) needing that room temperature will be tested
The exposure condition of true concrete structure is simulated, higher to Laboratory Request, experimentation cost is excessively high；(2) in order to during test
It avoids the ice of concrete surface from growing, needs concrete carrying out part heating, easily cause ice cube hardness to change, influence ice
The result of abrasion.Every country test is to carry out under different testing equipments, and focus on different parameter (abrasion sides
Method, contact pressure, temperature, ice drift velocity), the test result from different researchs and bad association, research achievement can not be into
Row reference.
Summary of the invention
It is above-mentioned to solve the object of the present invention is to provide a kind of concrete anti-ice wear performance experimental rig and test method
Problem of the existing technology has studied and mixes under Different climate condition, flow rate of water flow by changing test temperature and ice cube kinetic energy
Solidifying soil anti-ice wear performance.
To achieve the above object, the present invention provides following schemes:
The present invention discloses a kind of concrete anti-ice wear performance experimental rig, including main body bottom plate, reciprocating engine, reciprocating engine tune
Speed switch fixes bracket, test block hold-down support, ice bank sliding support and toroidal cryogenic ice bank, cryogenic thermostat water-bath, institute toward machine
Stating reciprocating engine includes variable speed electric motors, particularly, eccentric rod, push-pull rod, reciprocating lever, and the variable speed electric motors, particularly, motor speed-regulating switch, motor are fixed
Bracket is fixedly installed on the main body bottom plate, and the variable speed electric motors, particularly end cap is fixed on inside motor fixed rack preformed hole,
The rotation axis of variable speed electric motors, particularly passes through preformed hole and is sequentially connected eccentric rod, push-pull rod, reciprocating lever；Reciprocating lever passes through the fixed branch of reciprocating lever
Frame is slidably fixed on the fixed bracket of reciprocating engine；The test block hold-down support is fixedly installed on the main body support and for solid
Determine concrete test block, temperature control plate is tiled to maintain concrete test block upper surface not freeze in told test block hold-down support surface；Institute
Tell that toroidal cryogenic ice bank is slidably fixed on ice bank sliding support and can constrain ice cube sliding, rub concrete test block；The weight
Stacking is placed on main body bottom plate, counterweight is placed in toroidal cryogenic ice bank above ice cube when test, is passed through and change contact pressure
Size adjusts frictional force between ice cube and concrete test block；Told cryogenic thermostat water-bath and the coolant liquid of told toroidal cryogenic ice bank are followed
Ring interlayer is connected to control the temperature around ice cube.
Preferably, the reciprocating engine is rubbed equipped with reciprocating engine speed-regulating switch with the anti-ice for testing concrete under differentiated friction speed
Damage performance.
The preferred reciprocating engine uses variable speed electric motors, particularly, adjusts motor rotation speed by reciprocating engine speed-regulating switch, that is, adjusts
Save the speed of ice cube and concrete test block friction.Degree of injury of the ice cube to concrete for hydraulic structure under test differentiated friction speed.
Preferably, the variable speed electric motors, particularly bearing is fixedly connected with the eccentric rod, and the eccentric rod and the push-pull rod are cut with scissors
Connection, the push-pull rod are hinged with the reciprocating lever.
Preferably, the ice bank sliding support be auxiliarily fixed concrete test block and meanwhile limit annular Low-temperature Ice slot height and
Glide direction.The ice bank sliding support includes vertical bar and cross bar, and vertical bar is welded on the master close to test block hold-down support two sides
To play the role of being auxiliarily fixed test block on body bottom plate, cross bar is slideway, and limitation limits the height and sliding of annular Low-temperature Ice slot
Direction.
Preferably, the reciprocating engine includes motor speed-regulating switch to test the anti-ice abrasion of concrete under differentiated friction speed
Performance.
Preferably, the variable speed electric motors, particularly bearing is fixedly connected with the eccentric rod, and the eccentric rod and the push-pull rod are cut with scissors
Connection, the push-pull rod are hinged with the reciprocating lever.
Preferably, the ice bank sliding support be auxiliarily fixed concrete test block and meanwhile limit annular Low-temperature Ice slot height and
Glide direction.The ice bank sliding support includes vertical bar and cross bar, and vertical bar is welded on the master close to test block hold-down support two sides
To play the role of being auxiliarily fixed test block on body bottom plate, cross bar is slideway, and limitation limits the height and sliding of annular Low-temperature Ice slot
Direction.
Preferably, the toroidal cryogenic sink is made of outer tank body, inner tank body, and coolant liquid circulation folder is formed between interior outer tank body
Layer, and toroidal cryogenic sink height is greater than the overlapping height of ice cube and counterweight.The toroidal cryogenic sink be made of stainless steel with
Transmit low temperature.
Preferably, the test block hold-down support includes firm banking and two fixed angles bracing members, each fixed angles
Bracing members are fixedly connected on the body base, are equipped with a nut, the nut on the fixed angles bracing members
Internal screw thread is connected with a press bolt.
Preferably, the cryogenic thermostat water-bath lowest refrigerating temperature is subzero 30 degree, and control essence is reached for ± 0.1 degree, can
Temperature are arranged according to the climatic conditions in different simulation areas, strict control test variable increases the accurate of test result
Property, while the thermal energy for reducing test block temperature and friction generation influences ice cube hardness bring.
Preferably, the counterweight is made of 25mm steel plate, and every piece of weight 1kg, device configuration has muti-piece counterweight.It can when test
To place the contact pressure of different number of counterweight adjustment ice cube and test block above the ice cube into the toroidal cryogenic ice bank, thus
Adjust frictional force size between ice cube and test block.
The present invention also provides a kind of test sides for applying experimental rig test concrete anti-ice wear performance as described above
Method, comprising the following steps:
Step 1: after the concrete test block conserved is taken out, visual inspection is carried out, records concrete test block mass M1,
And it measures concrete test block and moves thickness h1, super depth of field 3-D scanning is carried out to concrete test block and obtains image T1；
Step 2: concrete test block is fixed on the test block hold-down support, and by ice cube, counterweight is successively overlapped and is put into institute
It states in toroidal cryogenic ice bank and records ice cube G1, counterbalance mass G2；
Step 3 starts the motor speed-regulating switch and the cryogenic thermostat water-bath, into coolant liquid circulation interlayer
It is passed through coolant liquid, is persistently freezed to coolant liquid using the cryogenic thermostat water-bath so that the coolant liquid recycles the cooling in interlayer
Liquid keeps stable low-temperature condition；Ice cube moves back and forth on concrete test block under the drive of told reciprocating engine, friction；
Step 4: after reaching erosion path, told motor speed-regulating switch is closed, terminates test, takes out concrete test block, is wiped
It weighs except concrete test block surface moisture and records weight M2, and measure the thickness h of concrete test block2, to concrete test block again into
The super depth of field 3-D scanning of row obtains image T2；
Step 5: experimental data processing: mass loss rate Δ W=(M1-M2)/M1× 100%, relative thickness loss late Δ h
=(h1-h2) × 100%, any time frictional force F=μ (G1+G2), whereinH is ice cube
Highly.Test block degree of impairment is analyzed according to relative thickness loss late Δ h, compares the super depth image T before and after erosion test1And T,
Outer damage situation is observed, under identical frictional force F effect, mass loss rate Δ W is smaller, relative thickness loss late Δ h is smaller
Concrete test block anti-ice abrasion performance it is better.
The present invention achieves following technical effect compared with the existing technology: (the invention compared with prior art, is had
The advantages of having and good effect)
Concrete anti-ice wear performance experimental rig in the present invention, the reciprocating lever movable length of reciprocating engine are 15cm-
20cm, test block length use 40cm, and effective friction length of ice cube and test block is less than test block length, can effectively compare friction
Damage to test block；Test block hold-down support surface bedding silica-gel electrothermic plate constant temperature heating plate, to test block lower surface constant temperature when test
Heating will not be frozen by the water that temperature transmitting melts ice friction test block upper surface；Concrete test block is fixed on test block to consolidate
Determine on support, ice cube is put into toroidal cryogenic ice bank, ice cube bottom end is contacted with test block upper surface, toroidal cryogenic ice bank and low temperature
Water bath with thermostatic control connection, adjusts environment temperature；Cryogenic temperature by adjusting cryogenic thermostat water-bath can adjust toroidal cryogenic sink
The temperature of interior refrigerating fluid adjusts the temperature of ice cube ambient enviroment, change ice cube and test block by adjusting the reciprocating engine speed of service
Friction velocity, by adjusting the contact pressure between counterbalance mass change ice cube and test block and with this regulating friction force size, more
Accurately friction destruction of the ice under simulation different temperatures, friction speed, different kinetic energy to concrete for hydraulic structure；Further, originally
The experimental rig and test method for the evaluation concrete anti-ice wear performance that invention provides, concrete is in practical work during being ice flood
Effective data are provided by floating ice friction destruction degree in journey to support.
Detailed description of the invention
It in order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, below will be to institute in embodiment
Attached drawing to be used is needed to be briefly described, it should be apparent that, the accompanying drawings in the following description is only some implementations of the invention
Example, for those of ordinary skill in the art, without creative efforts, can also obtain according to these attached drawings
Obtain other attached drawings.
Fig. 1 is the axonometric drawing of concrete anti-ice wear performance experimental rig provided by the invention；
Fig. 2 is the structural representation of the test specimen hold-down support of concrete anti-ice wear performance experimental rig provided by the invention
Figure；
In figure: 1- main body bottom plate；2- variable speed electric motors, particularly；3- reciprocating engine machine speed-regulating switch；4- ice bank sliding support；5- annular is low
Warm ice bank；6- pipeline；7- cryogenic thermostat water-bath；8- reciprocating engine machine fixes bracket；9- eccentric rod；10- push-pull rod；11- reciprocating lever
Fixed frame；12- test block hold-down support；13- reciprocating lever；14- test block；15- reciprocating engine；16- counterweight；17- firm banking；18- is solid
Determine angle steel support；19- nut；20- presses bolt
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
It is above-mentioned to solve the object of the present invention is to provide a kind of concrete anti-ice wear performance experimental rig and test method
Problem of the existing technology, truer simulation cold district rivers insult the friction condition to concrete for hydraulic structure, to mixed
Solidifying soil carries out ice-concrete test, accurate to test concrete anti-ice abrasion corrosion energy.
In order to make the foregoing objectives, features and advantages of the present invention clearer and more comprehensible, with reference to the accompanying drawing and specific real
Applying mode, the present invention is described in further detail.
The present invention provides a kind of concrete anti-ice wear performance experimental rig, in a specific embodiment of the invention, such as
Shown in Fig. 1, which includes main body bottom plate 1, reciprocating engine 15, test block hold-down support 12, ice
Slot sliding support 4 and toroidal cryogenic ice bank 5, cryogenic thermostat water-bath 7 are provided with reciprocating engine 15, institute on the main body bottom plate 1
Stating reciprocating engine includes variable speed electric motors, particularly 2, reciprocating engine speed-regulating switch 3, reciprocating engine fixed bracket 8, eccentric rod 9, push-pull rod 10, reciprocating lever
13, the fixed bracket 8 of the variable speed electric motors, particularly 2, reciprocating engine speed-regulating switch 3, reciprocating engine is fixedly installed on the main body bottom plate 1,
The variable speed electric motors, particularly end cap is fixed on inside motor fixed rack preformed hole, and the bearing of variable speed electric motors, particularly is sequentially connected across preformed hole
Eccentric rod 9, push-pull rod 10, reciprocating lever 13, reciprocating lever are slidably fixed on the fixed bracket 8 of reciprocating engine by the fixed bracket 11 of reciprocating lever
On；The test block hold-down support 12 is fixedly installed on 1 right side of main body support and for fixing concrete test block 14, tells examination
Temperature control plate 13 tile to maintain 14 upper surface of concrete test block not freeze in 12 surface of block hold-down support；Told toroidal cryogenic ice bank
5 are slidably fixed on ice bank sliding support 4 and can constrain ice cube sliding friction test block；Told cryogenic thermostat water-bath 7 and told ring
The coolant liquid circulation interlayer of shape low temperature ice bank 5 is connected to control the temperature around ice cube.
Use the concrete anti-ice polishing machine experimental rig test concrete anti-ice polishing machine in above-described embodiment
Test method, comprising the following steps:
Step 1: after the concrete test block conserved is taken out, visual inspection is carried out, records concrete test block mass M1,
And it measures concrete test block and moves thickness h1, super depth of field 3-D scanning is carried out to concrete test block and obtains image T1；
Step 2: concrete test block is fixed on the test block hold-down support, and by ice cube, counterweight is successively overlapped and is put into institute
It states in toroidal cryogenic ice bank and records ice cube G1, counterbalance mass G2；
Step 3 starts the motor speed-regulating switch and the cryogenic thermostat water-bath, into coolant liquid circulation interlayer
It is passed through coolant liquid, is persistently freezed to coolant liquid using the cryogenic thermostat water-bath so that the coolant liquid recycles the cooling in interlayer
Liquid keeps stable low-temperature condition；Ice cube moves back and forth on concrete test block under the drive of told reciprocating engine, friction；
Step 4: after reaching erosion path, told motor speed-regulating switch is closed, terminates test, takes out concrete test block, is wiped
It weighs except concrete test block surface moisture and records weight M2, and measure the thickness h of concrete test block2, to concrete test block again into
The super depth of field 3-D scanning of row obtains image T2；
Step 5: experimental data processing: mass loss rate Δ W=(M1-M2)/M1× 100%, relative thickness loss late Δ h
=(h1-h2) × 100%, any time frictional force F=μ (G1+G2), whereinH is that ice cube is high
Degree.Test block degree of impairment is analyzed according to relative thickness loss late Δ h, compares the super depth image T before and after erosion test1And T, it sees
Outer damage situation is examined, under identical frictional force F effect, mass loss rate Δ W is smaller, relative thickness loss late Δ h is smaller
The performance of concrete test block anti-ice abrasion is better.
Concrete anti-ice wear performance experimental rig in the present invention, reciprocating engine 15 use variable speed electric motors, particularly 2, thus it is possible to vary rub
Rate is wiped, ice-concrete friction experiment under differentiated friction rate is carried out；The counterweight for using different quality instead can change friction
Power carries out ice-concrete friction test under differentiated friction power；The adjustable cryogenic temperature of cryogenic thermostat water-bath 7 simultaneously keeps permanent
Temperature, it is minimum that coolant temperature can be dropped to subzero 30 degree, it is that the ice-under the different temperatures carried out in annular erosion sink is mixed
Solidifying soil frictional experiment provides temperature guarantee.The reciprocating lever movable length of reciprocating engine is 15cm-20cm, and test block length uses
Effective friction length of 40cm, ice cube and test block is less than test block length, can effectively compare the damage to rub to test block；Test block
Hold-down support surface bedding silica-gel electrothermic plate constant temperature heating plate is transmitted to test block lower surface heated at constant temperature when test by temperature
The water for melting ice friction test block upper surface will not freeze；Concrete test block is fixed on test block hold-down support, ice cube is put
Enter in toroidal cryogenic ice bank, ice cube bottom end is contacted with test block upper surface, and toroidal cryogenic ice bank is connected to cryogenic thermostat water-bath, is adjusted
Environment temperature；Cryogenic temperature by adjusting cryogenic thermostat water-bath can adjust the temperature of refrigerating fluid in toroidal cryogenic sink, i.e.,
The temperature for adjusting ice cube ambient enviroment changes ice cube and test block friction velocity by adjusting the reciprocating engine speed of service, passes through adjusting
Counterbalance mass changes the contact pressure between ice cube and test block and the size with this regulating friction force, more accurately simulates not equality of temperature
The friction destruction of ice under degree, friction speed, different kinetic energy to concrete for hydraulic structure；Further, evaluation provided by the invention is mixed
The experimental rig and test method of solidifying soil anti-ice wear performance, rub by floating ice in practical projects for concrete during ice flood
Extent of the destruction provides effective data and supports.The ice cube speed control precision of friction concrete sample is high, meets item different in flow rate
Under part the case where ice friction test block.The test difference that concrete anti-ice wear performance experimental rig in the present invention can quantify is rubbed
Ice-concrete friction test under rate, different temperatures is wiped, the experimental rig parameter controllability is strong, and precision is high, test efficiency
Height saves labour, reduces the labor intensity of testing crew, while reducing the limitation of test site, tested convenient for interior,
So as to truer simulation water in cold regions work concrete by ice friction environment, flow at high speed ice is carried out to concrete and is rubbed
It wipes and tests, it is accurate to test concrete anti-ice wear performance.Friction rate, friction temperature, the fraction time of friction test can roots
Weather according to simulation area is accordingly arranged.The present invention is tested using 100mm*100mm*400mm standard specimen, can be with
The comparison assessment of other performance testing experiment.
In another specific embodiment of the present invention, as shown in Fig. 2, test block hold-down support 12 includes firm banking 17 and two
A fixed angles bracing members 18, each fixed angles bracing members 18 are fixedly connected on firm banking 17, and firm banking 17 is fixedly connected
In being equipped with a nut 19 on 1 surface of main body bottom plate, a fixed angles bracing members 18,19 internal screw thread of nut is connected with a press spiral shell
Bolt 20.When fixing concrete test block 14, concrete test block 14 is placed between two fixed angles bracing members 18, torsion press bolt
20 withstand concrete test block 14, continue torsion press bolt 20 until concrete test block 14 is fixed.
Specific examples are applied in the present invention, and principle and implementation of the present invention are described, above embodiments
Illustrate to be merely used to help understand method and its core concept of the invention；At the same time, for those skilled in the art, according to
According to thought of the invention, there will be changes in the specific implementation manner and application range.In conclusion the content of the present specification
It should not be construed as limiting the invention.
Claims (10)
1. a kind of concrete anti-ice wear performance experimental rig, it is characterised in that: including main body bottom plate and cryogenic thermostat water-bath:
Main body bottom plate is provided on the main body bottom plate
The fixed bracket of reciprocating engine, reciprocating engine speed-regulating switch, reciprocating engine, the reciprocating engine includes variable speed electric motors, particularly, eccentric rod, push-and-pull
Bar, reciprocating lever.The variable speed electric motors, particularly, motor speed-regulating switch, motor fixed rack are fixedly installed on the main body bottom plate, institute
It states variable speed electric motors, particularly end cap to be fixed on inside motor fixed rack preformed hole, the rotation axis of variable speed electric motors, particularly is sequentially connected across preformed hole
Eccentric rod, push-pull rod, reciprocating lever；Reciprocating lever is fixed on the fixed bracket of reciprocating engine by the fixed bracket slide of reciprocating lever；
Test block hold-down support, the test block hold-down support are fixedly installed on the main body bottom plate and try for fixing concrete
Temperature control plate is tiled to maintain concrete test block upper surface not freeze in block, told test block hold-down support surface；
Ice bank sliding support and toroidal cryogenic ice bank, told toroidal cryogenic ice bank is slidably fixed on ice bank sliding support and energy
Constrain ice cube sliding friction concrete test block；
Counterweight, the counterweight are placed on main body bottom plate, counterweight are placed in toroidal cryogenic ice bank above ice cube when test, are led to
Cross frictional force between change contact pressure size adjustment ice cube and concrete test block；
And
Cryogenic thermostat water-bath, the cryogenic thermostat water-bath are connected to the coolant liquid of toroidal cryogenic ice bank circulation interlayer to control
Temperature around ice cube.
2. concrete anti-ice wear performance experimental rig according to claim 1, it is characterised in that: the reciprocating engine is furnished with
Reciprocating engine speed-regulating switch is to test the anti-ice wear performance of concrete under differentiated friction speed.
3. concrete anti-ice wear performance experimental rig according to claim 2, it is characterised in that: the reciprocating engine uses
Variable speed electric motors, particularly adjusts motor rotation speed by reciprocating engine speed-regulating switch, that is, adjusts the speed of ice cube and concrete test block friction.
Degree of injury of the ice cube to concrete for hydraulic structure under test differentiated friction speed.
4. concrete anti-ice wear performance experimental rig according to claim 1, it is characterised in that: the variable speed electric motors, particularly axis
It holds and is fixedly connected with the eccentric rod, the eccentric rod is hinged with the push-pull rod, and the push-pull rod and the reciprocating lever are cut with scissors
Connection.
5. concrete anti-ice wear performance experimental rig according to claim 1, it is characterised in that: the ice bank sliding branch
Frame is auxiliarily fixed concrete test block while limiting the height and glide direction of annular Low-temperature Ice slot.The ice bank sliding support includes
Vertical bar and cross bar, vertical bar are welded on the main body bottom plate close to test block hold-down support two sides to play the work that test block is auxiliarily fixed
With cross bar is slideway, and limitation limits the height and glide direction of annular Low-temperature Ice slot.
6. concrete anti-ice wear performance experimental rig according to claim 1, it is characterised in that: the toroidal cryogenic water
Slot is made of outer tank body, inner tank body, is formed coolant liquid between interior outer tank body and is recycled interlayer, and toroidal cryogenic sink height is greater than ice cube
With the overlapping height of counterweight.The toroidal cryogenic sink is made of stainless steel to transmit low temperature.
7. concrete anti-ice wear performance experimental rig according to claim 1, it is characterised in that: the fixed branch of the test block
Seat includes firm banking and two fixed angles bracing members, and each fixed angles bracing members are fixedly connected in the body base
On, a nut is equipped on the fixed angles bracing members, the nut inner thread is connected with a press bolt.
8. concrete anti-ice wear performance experimental rig according to claim 1, it is characterised in that: the cryogenic thermostat water
Bathing lowest refrigerating temperature is subzero 30 degree, and control essence is reached for ± 0.1 degree, can be set according to the climatic condition in different simulation areas
Set temperature, strict control test temperature variable increases the accuracy of test result, while reducing test block temperature and rubbing
Wiping the thermal energy generated influences ice cube hardness bring.
9. concrete anti-ice wear performance experimental rig according to claim 1, it is characterised in that: the counterweight is by 25mm
Steel plate is made, and every piece of weight 1kg, device configuration has muti-piece counterweight.It can be into the toroidal cryogenic ice bank on ice cube when test
The contact pressure of different number of counterweight adjustment ice cube and test block is placed by side, big so as to adjust frictional force between ice cube and test block
It is small.
10. a kind of test using experimental rig according to any one of claims 1 to 9 test concrete anti-ice wear performance
Method, it is characterised in that: the following steps are included:
Step 1: after the concrete test block conserved is taken out, visual inspection is carried out, records concrete test block mass M1, and measure
Concrete test block moves thickness h1, super depth of field 3-D scanning is carried out to concrete test block and obtains image T1；
Step 2: concrete test block is fixed on the test block hold-down support, and by ice cube, counterweight is successively overlapped and is put into the ring
In shape low temperature ice bank and record ice cube G1, counterbalance mass G2；
Step 3 starts the motor speed-regulating switch and the cryogenic thermostat water-bath, is passed through into coolant liquid circulation interlayer
Coolant liquid, persistently being freezed using the cryogenic thermostat water-bath to coolant liquid keeps the coolant liquid in the coolant liquid circulation interlayer
Stable low-temperature condition；Ice cube moves back and forth on concrete test block under the drive of told reciprocating engine, friction；
Step 4: after reaching erosion path, closing told motor speed-regulating switch, terminate test, takes out concrete test block, and erasing is mixed
Solidifying soil test block surface moisture weighing record weight M2, and measure the thickness h of concrete test block2, concrete test block is surpassed again
Depth of field 3-D scanning obtains image T2；
Step 5: experimental data processing: mass loss rate Δ W=(M1-M2)/M1× 100%, relative thickness loss late Δ h=
(h1-h2) × 100%, any time frictional force F=μ (G1+G2), whereinH is that ice cube is high
Degree.Test block degree of impairment is analyzed according to relative thickness loss late Δ h, compares the super depth image T before and after erosion test1And T, it sees
Outer damage situation is examined, under identical frictional force F effect, mass loss rate Δ W is smaller, relative thickness loss late Δ h is smaller
The performance of concrete test block anti-ice abrasion is better.
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