CN109708992A - A kind of phase transformation asphalt ice-melt snow effect detection device and detection method - Google Patents
A kind of phase transformation asphalt ice-melt snow effect detection device and detection method Download PDFInfo
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- CN109708992A CN109708992A CN201811595467.XA CN201811595467A CN109708992A CN 109708992 A CN109708992 A CN 109708992A CN 201811595467 A CN201811595467 A CN 201811595467A CN 109708992 A CN109708992 A CN 109708992A
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Abstract
The invention discloses a kind of phase transformation asphalt ice-melt snow effect detection device and detection methods, pass through setting test box main body and the weighing unit being set in test box main body, it tests and is equipped with temperature control device and snow making apparatus in box main body, snow making apparatus snow output spot is set to upper end in test box main body and is located above weighing unit, it further include for placing the thermal-insulating body that the upper end of test specimen to be measured is opening, thermal-insulating body is placed on weighing unit, utilize the temperature control device and snow making apparatus being set in test box main body, true snowfall environment can be simulated, test specimen to be measured is placed in incubator, it can guarantee the true Thaw performance of test specimen to be measured, it is recorded in certain circumstances using weighing unit, the snow melt quality for being placed in the intracorporal test specimen to be measured of incubator is obtained within the set time, so as to obtain test specimen snow melt mass parameter to be measured, the present apparatus Structure is simple, easy to detect, can simulate to obtain under true different temperatures and snowfall environment, the Thaw performance parameter of test specimen to be measured.
Description
Technical field
The invention belongs to pitch detection devices, and in particular to a kind of phase transformation asphalt ice-melt snow effect detection device and
Detection method.
Background technique
In the 21st century, people are higher to the access and Functional Requirement of bituminous pavement, and China some areas belong to ice
Freeze area, some local accumulated snow times are up to 3~4 months, how to solve the problems, such as winter road table accumulated snow and " frost " to ensuring to drive a vehicle
Safety is most important.
Road deicing snow technology both domestic and external mainly has road surface exterior technology and road surface internal technology two major classes at present.Road surface
Exterior technology specifically includes that removing method, deicing salt except snow dust；Road surface internal technology specifically includes that heating power snow melt technology, elastic road
Face deicing technology.However, removing method low efficiency, costly, influence traffic and traffic safety and being unable to long working；And
When being avenged using mechanical deicing, the cohesive force between ice and road surface is larger, and exclusive use snow removal with machine effect is simultaneously bad, clear to ice face
Except being not thorough, the anti-slide performance on road surface cannot be fundamentally solved；Deicing salt can generate corrosion to road infrastructure except snow dust,
Very big destruction is brought to surrounding enviroment.The above snow-clearing technique belongs to passive deicing, has certain hysteresis quality.Thermal ice-melting
Snow technology, pavement construction is complicated, constructing operation process is stringent, the integral strength on road surface is unstable, and later period maintenance conserves
When need to excavate road surface, be affected to the traffic capacity；Elastic road surface snow removing technology is high-elastic due to ground surface material in construction
Property, road surface are not easy to be compacted, and cause pavement durability poor.
In recent years, domestic to start to begin one's study to the use of phase-change material in the road, phase-change material is to utilize phase transition process
The heat of middle absorption or release carries out the substance of hidden heat energy storage, has and stores heat in the form of latent heat in phase transition process
In itself or the performance for being released to environment, thermal energy storage can be carried out and temperature adjusts control, so that active control pitch mixes
High-temperature stability, low-temperature cracking-resistance, Cooling rate of material etc. targetedly solve or inhibit the drip under different status temperatures
Green road surface disease relevant to temperature generates.Compared with traditional snow melt technology, the bituminous pavement for adding phase-change material not only has
Have the advantages that actively, it is efficient, and continuous, lasting deicing or snow melting may be implemented, avoids a system caused by using a large amount of deicing salts
Column adverse effect.
But now there has been no the research of the asphalt ice-melt snow effect quantitatively to incorporation phase-change material, Chang An University has
A kind of indoor snowfall snow melt is invented by long-term, short-term Thaw performance research to salt self-dissolving snow road surface, Beijing University of Civil Engineering and Architecture
Test apparatus and evaluation method, but it is untrue by trash ice mode snowfall simulation effect, the cooling effect of environmental simulation from top to bottom
Real, road surface should also simulate cooling mode from top to bottom, and track plate side should have incubator to control temperature, and phase transformation pitch mixes
The ice-melt snow effect of material needs more accurate, lasting mensuration mode.Therefore, using true environment simulator and suitable survey
Determine method detection phase-change material ice-melt snow effect to be necessary.
Summary of the invention
The purpose of the present invention is to provide a kind of phase transformation asphalt ice-melts to avenge effect detection device and detection method, with
Overcome the deficiencies in the prior art.
In order to achieve the above objectives, the present invention adopts the following technical scheme:
A kind of phase transformation asphalt ice-melt snow effect detection device, including test box main body and be set to test box master
Intracorporal weighing unit, test box main body is interior to be equipped with temperature control device and snow making apparatus, and snow making apparatus snow output spot is set to test box master
Internal upper end is located above weighing unit, further includes for placing the thermal-insulating body that the upper end of test specimen to be measured is opening, thermal-insulating body
It is placed on weighing unit, test box body side is equipped with chamber door.
Further, thermal-insulating body bottom area is greater than weighing unit footprint.
Further, underfill has sand stone layer in thermal-insulating body, and sand stone layer upper end is for placing track plate test specimen to be measured.
Further, temperature control device include temperature controller and be set to test box main body in upper end evaporator and
The compressor and condenser being connect with evaporator by pipeline, compressor are connected with condenser, condenser and evaporator joint pipe
Road is equipped with expansion valve；Temperature controller is for controlling temperature in test box main body.
Further, snow making apparatus include snowmaker and be set to test box main body inner top artificial snow-making system spray head,
Artificial snow-making system spray head is connected to snowmaker by artificial snow-making system pipeline.
Further, test box body side is equipped with observation window, is equipped with lighting system in test box main body.
Further, it tests bottom in box main body and is fixed with multiple independent weighing units.
Further, thermal-insulating body one side wall is equipped with dismountable block plate.
It further, further include the master control panel being fixed on test box main body, master control panel is connected to temperature control device, makes
Avenge device and weighing unit.
A kind of phase transformation asphalt ice-melt snow effect detection method, comprising the following steps:
Track plate test specimen to be measured is put into thermal-insulating body by step 1), and connection thermal-insulating body is put into test box main body
On weighing unit；
Step 2), initialization weighing unit, setting keep temperature in test box main body to testing temperature, by temperature control system
It is constant；
Step 3) utilizes snow making apparatus artificial snow-making, real-time record weighing unit mass-change curve；
Step 4), after the completion of artificial snow-making, keep test box main body in temperature it is constant, using weighing unit record weighing unit on protect
The mass-change curve of incubator body, calculates Rateof snowmelt according to the following formula:
miGross mass on thermal-insulating body on expression i moment weighing unit.
Compared with prior art, the invention has the following beneficial technical effects:
Effect detection device is avenged in a kind of phase transformation asphalt ice-melt of the present invention, passes through setting test box main body and setting
Weighing unit in test box main body, test box main body is interior to be equipped with temperature control device and snow making apparatus, the setting of snow making apparatus snow output spot
It is located above weighing unit in upper end in test box main body, further includes for placing the incubator that the upper end of test specimen to be measured is opening
Body, thermal-insulating body are placed on weighing unit, and test box body side is equipped with chamber door, utilize the temperature control being set in test box main body
Device and snow making apparatus can simulate true snowfall environment, test specimen to be measured are placed in incubator, can guarantee test specimen to be measured
True Thaw performance is recorded in certain circumstances using weighing unit, obtain being placed within the set time incubator it is intracorporal to
The snow melt quality of test block, so as to obtain test specimen snow melt mass parameter to be measured, present apparatus structure is simple, easy to detect, energy
Enough simulations obtain under true different temperatures and snowfall environment, the Thaw performance parameter of test specimen to be measured.
Further, thermal-insulating body bottom area is greater than weighing unit footprint, prevents from falling snow on weighing unit, to be tested
Part snow melt quality impacts, and guarantees that the mass change on weighing unit is test specimen snow melt mass change value to be measured, it is ensured that measurement number
According to accuracy.
Further, underfill has a sand stone layer in thermal-insulating body, and track plate side is by preservation and controlling, more really
Simulate pavement structure temperature rate of change.
Further, the evaporator of temperature control system can variation side that more actually analog temperature from top to bottom changes
To, and environment when measurement under the speed simulation different temperatures variation of the autonomous set temperature of energy and temperature change, artificial snow-making system
Snowmaker has different artificial snow-making power, simulates different snowfall scales, and set axial flow blower in its pipe-line part, can manufacture
True snow out.
Further, it tests bottom in box main body and is fixed with multiple independent weighing units, it is to be measured multiple groups can be carried out simultaneously
The measurement of test specimen guarantees the accuracy of data.
A kind of phase transformation asphalt ice-melt snow effect detection method, passes through simulation interior in the test box main body of sealing and drops
Mild snowfall environment, using under the conditions of simulating real-world temperature snowfall, snow melt quality of the test specimen to be measured in specific time,
To obtain the snow melt efficiency curve of test specimen to be measured, the Thaw performance parameter of test specimen to be measured is obtained.Method is simple and fast, accuracy rate
It is high.
Detailed description of the invention
Fig. 1 is detection device axis of the present invention side schematic diagram.
Fig. 2 is detection device front-end view of the present invention.
Fig. 3 is detection device rear end of the present invention schematic diagram.
Wherein: 1-snowmaker；2-condensers；3-expansion valves；4-compressors；5-chamber doors；6-thermal-insulating bodies；7—
Weighing unit；9-master control panels；11-baffles；12- observation window；13-evaporators；14-headlamps；15-artificial snow-making system pipelines；
16-artificial snow-making system spray heads；17-track plate test specimens；18-test box main bodies.
Specific embodiment
The invention will be described in further detail with reference to the accompanying drawing:
As shown in Figure 1 to Figure 3, effect detection device, including test box main body 18 are avenged in a kind of phase transformation asphalt ice-melt
And it is set to the weighing unit 7 in test box main body 18, temperature control device and snow making apparatus, artificial snow-making dress are equipped in test box main body 18
It sets snow output spot and is set to upper end in test box main body 18 and be located above weighing unit 7, further include the upper end for placing test specimen to be measured
For the thermal-insulating body 6 of opening, tests 18 side of box main body and be equipped with chamber door 5；
6 bottom area of thermal-insulating body is greater than 7 footprint of weighing unit；
Underfill has sand stone layer in thermal-insulating body 6, and sand stone layer upper end is equipped with track plate test specimen 17；
Temperature control device include temperature controller and be set to test box main body 18 in upper end evaporator 13 and with steaming
The compressor 4 and condenser 2 that hair device 13 is connected by pipeline, compressor 4 and condenser 2 connect, and condenser 2 and evaporator 13 connect
Adapter tube road is equipped with expansion valve 3；Temperature controller is for controlling temperature in test box main body 18；
Snow making apparatus includes snowmaker 1 and the artificial snow-making system spray head 16 for being set to test 18 inner top of box main body, artificial snow-making
System spray head 16 is connected to snowmaker 1 by artificial snow-making system pipeline 15；
It tests 18 side of box main body and is equipped with observation window 12, observation window 12 uses tempering transparent glass, tests in box main body 18
Equipped with lighting system, lighting system is illuminated using headlamp, convenient for experimental status in observation test box main body 18；
Bottom is fixed with multiple weighing units 7 in test box main body 18, and the present embodiment uses four weighing units being uniformly arranged
7,
6 one side wall of thermal-insulating body is equipped with dismountable block plate 11；
It further include the master control panel being fixed on test box main body 18, master control panel 9 is connected to temperature control device, snow making apparatus
And weighing unit；
With reference to the accompanying drawing, effect detection device is avenged to phase transformation asphalt ice-melt of the present invention by embodiment
Operating method be described in detail, the scope of the present invention is not limited to the embodiment.
Phase transformation asphalt ice-melt snow effect measuring method includes the following steps:
(1) phase transformation asphalt track plate specimen molding and placement
Consider that practical making phase change asphalt pavement, phase-change material are mainly incorporated in superficial layer, surface layer thickness is generally in 4cm
Left and right, in order to which ability is avenged in the ice-melt of phase transformation bitumen mixture specimen actual response road surface layer as far as possible, the present invention uses room
Lubrication groove grinds molding board-like test specimen as subjects, and according to design requirement, the pitch for making 4 identical phase-change material volumes is mixed
It closes truck rut plate to store at least demould afterwards for 24 hours at normal temperature having a size of 50mm × 300mm × 300mm, it is mixed to obtain phase transformation pitch
Flitch formula test specimen is closed, track plate is respectively put into lower layer and has been inserted in 4 incubators of sandstone, incubator is respectively put into test
On four weighing units in box main body；
(2) the environmental preparation work of main tank is detected
The peeling of 4 weighing units is handled by master board, quality shows to be 0g at this time, puts trip the lights, selection
Cooling mode sets t DEG C of initial temperature, sets the rate of cooling；Until spin manifold temperature is shown when being down to set temperature, selection drop
Power is avenged, snowmaker is selectively closed by the snowfall that observation window observes track plate, operation panel weighing system is shown at this time
There are 4 different qualities；
(3) measurement of snow melt effect
After closing snowmaker, starts timing, detection main tank No.1 door is opened after 60min, writes down operation panel weighing system I
Number quality is m1, then after 60min, writing down No. II quality of operation panel weighing system is m2, similarly write down the matter on remaining weighing unit
Measure m3、m4；
(4) test result analysis
Snow melt quality-time graph is drawn, with Rateof snowmeltFor index,
React the speed of phase transformation asphalt ice-melt snow；With average Rateof snowmeltFor index, reacts the ice-melt of phase transformation asphalt and avenge ability
Size；At t DEG C of transformation temperature of setting, V (t) value is bigger to illustrate that test specimen can release big calorimetric within i-i-1 times, is
The period is avenged in main ice-melt,Value is bigger to illustrate test specimen in i-imaxSection time Internal melt snow ability is stronger.
Claims (10)
1. effect detection device is avenged in a kind of phase transformation asphalt ice-melt, which is characterized in that including test box main body (18) and
The weighing unit (7) being set in test box main body (18), test box main body (18) is interior to be equipped with temperature control device and snow making apparatus, artificial snow-making
Device snow output spot is set to test box main body (18) interior upper end and is located above weighing unit (7), further includes for placing test specimen to be measured
Upper end be opening thermal-insulating body (6), thermal-insulating body (6) is placed on weighing unit (7), and test box main body (18) side is equipped with
Chamber door (5).
2. effect detection device is avenged in a kind of phase transformation asphalt ice-melt according to claim 1, which is characterized in that heat preservation
Cabinet (6) bottom area is greater than weighing unit (7) footprint.
3. effect detection device is avenged in a kind of phase transformation asphalt ice-melt according to claim 1, which is characterized in that heat preservation
Cabinet (6) interior underfill has sand stone layer, and sand stone layer upper end is for placing track plate test specimen (17) to be measured.
4. effect detection device is avenged in a kind of phase transformation asphalt ice-melt according to claim 1, which is characterized in that temperature control
Device include temperature controller and be set to test box main body (18) interior upper end evaporator (13) and with evaporator (13)
The compressor (4) and condenser (2) connected by pipeline, compressor (4) and condenser (2) connection, condenser (2) and evaporator
(13) connecting pipe is equipped with expansion valve (3)；Temperature controller is for controlling test box main body (18) interior temperature.
5. effect detection device is avenged in a kind of phase transformation asphalt ice-melt according to claim 1, which is characterized in that artificial snow-making
Device includes snowmaker (1) and the artificial snow-making system spray head (16) for being set to test box main body (18) inner top, the spray of artificial snow-making system
Head (16) is connected to snowmaker (1) by artificial snow-making system pipeline (15).
6. effect detection device is avenged in a kind of phase transformation asphalt ice-melt according to claim 1, which is characterized in that test
Box main body (18) side is equipped with observation window, is equipped with lighting system in test box main body (18).
7. effect detection device is avenged in a kind of phase transformation asphalt ice-melt according to claim 1, which is characterized in that test
Box main body (18) interior bottom is fixed with multiple independent weighing units (7).
8. effect detection device is avenged in a kind of phase transformation asphalt ice-melt according to claim 1, which is characterized in that heat preservation
Cabinet (6) one side wall is equipped with dismountable block plate (11).
9. effect detection device is avenged in a kind of phase transformation asphalt ice-melt according to claim 1, which is characterized in that also wrap
The master control panel being fixed in test box main body (18) is included, master control panel (9) is connected to temperature control device, snow making apparatus and weighing
Platform.
10. a kind of phase transformation asphalt ice-melt snow effect detection method based on detection device described in claim 1, including with
Lower step:
Track plate test specimen to be measured is put into thermal-insulating body by step 1), and connection thermal-insulating body is put into the weighing in test box main body
On platform；
Step 2), initialization weighing unit, setting keep temperature in test box main body permanent to testing temperature, by temperature control system
It is fixed；
Step 3) utilizes snow making apparatus artificial snow-making, real-time record weighing unit mass-change curve；
Step 4), after the completion of artificial snow-making, keep test box main body in temperature it is constant, utilize weighing unit record weighing unit on incubator
The mass-change curve of body, calculates Rateof snowmelt according to the following formula:
miGross mass on thermal-insulating body on expression i moment weighing unit.
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| CN110850186A (en) * | 2019-12-10 | 2020-02-28 | 长安大学 | Device and method for measuring microwave ice melting efficiency |
| CN112782211A (en) * | 2020-12-28 | 2021-05-11 | 东北电力大学 | Water phase change detection method |
| CN111650073B (en) * | 2020-06-15 | 2024-02-13 | 河北工业大学 | Method for testing snow and ice melting capability of phase-change asphalt mixture |
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