CN108982823A - Speeding-up simulation device and method in a kind of Asphalt mix for open-graded friction course drainage performance decaying behavior room - Google Patents
Speeding-up simulation device and method in a kind of Asphalt mix for open-graded friction course drainage performance decaying behavior room Download PDFInfo
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Abstract
The invention discloses speeding-up simulation device and methods in a kind of Asphalt mix for open-graded friction course drainage performance decaying behavior room.Including rainwater preparation system, rainfall simulation system, testing stand, temperature control box.Install compact of the present invention and manipulation is simple, using effect is good, can indoors speeding-up simulation difference rainfall intensity, rainfall groups of contaminants at, road gradient, environment temperature and Asphalt mix for open-graded friction course drainage performance is decayed behavior when road surface drainage mode, and then mixture infiltration coefficient is tested according to " highway engineering pitch and Asphalt Mixture Experiment regulation " (JTG E20), drainage performance attenuation coefficient is calculated, the value is smaller to show that mixture drainage performance attenuation degree is higher.So as to provide reference for Asphalt mix for open-graded friction course mix-design from road surface drainage performance perspective is improved, it is that the use occasion of Asphalt mix for open-graded friction course and road maintenance programming propose guidance, effectively improves the using effect of Asphalt mix for open-graded friction course.
Description
Technical field
The invention belongs to road engineering technical field of test equipment, and in particular to a kind of Asphalt mix for open-graded friction course drainage
Speeding-up simulation device and method in energy attenuation chamber.
Background technique
With the continuous development of road construction, requirement of the people to bituminous pavement is not limited solely to Rut resistance, cracking resistance
The service performance of the road beds such as property, water stability, more stringent requirements are proposed for the functions such as road pavement safety, noise reduction.Big gap
Asphalt provides effective realization means for the solution of such requirement.
Superficial layer is done using Asphalt mix for open-graded friction course and forms drainage pavement, and rainwater when rainfall may be implemented can be in time along table
Layer internal voids are laterally discharged, and effectively reduce the formation of road table moisture film, reduce vehicle slip possibility, and after reducing tyre side
Square water mist provides better visibility for rear driver, hence it is evident that improves travel safety.Big gap structure can be shown simultaneously
Writing reduces noise.Studies have shown that porous asphalt pavement generally reduces wet traffic accident rate 76% than plain asphalt road surface, noise is reduced
3-8 decibels.Asphalt paving is different from drainage pavement, and surface layer and base all use big gap mixture, and rainwater can be from road table
Soil matrix is vertically penetrated into along big gap structure, not only effectively plays safety noise reduction effect, city can be slowed down with recharge of groundwater
Road table temperature is effectively reduced in waterlogging degree and tropical island effect.
However as using the time to increase, its in the solid materials such as particulate matter, tire wear object in air and rainwater
He is gathered in the gap in asphalt muddy object under gravity or rainwater effect.Although rainfall can wash away part,
Still have part will adherency, embedded squeezing the effects of under be deposited in gap, cause being gradually reduced for asphalt effective porosity,
To cause mixture drainage performance to decay.This brings new to Asphalt mix for open-graded friction course use occasion and road maintenance programming etc.
Problem, and restrict one of the principal element that big gap bituminous pavement is promoted.
Gap attenuation law is fully understood in the permeable asphalt mixture design stage to need to consider as highway layout person
The problem of.It is crucial for how carrying out the indoor speeding-up simulation of Asphalt mix for open-graded friction course drainage performance decaying.China is related at present
There is no the evaluation criterion of Asphalt mix for open-graded friction course drainage performance decaying behavior speeding-up simulation in specification, the country rarely has to big sky
Research in terms of gap bituminous pavement anti-blockage capability.In existing related ends can not the more true practical surface conditions of simulation,
As road gradient, drainage pattern, environment temperature, rainfall intensity, particle blocking and other effects, and equipment generally only be applicable in single type
Test specimen.
Summary of the invention
The object of the present invention is to provide speeding-up simulation dresses in a kind of Asphalt mix for open-graded friction course drainage performance decaying behavior room
Set and method, can simulate different rainfall intensities, rainfall groups of contaminants at, road gradient, environment temperature and road surface drainage side
The decaying behavior of Asphalt mix for open-graded friction course drainage performance under the conditions of formula.So as to go out from extension road surface drainage performance perspective
Hair, provides reference for Asphalt mix for open-graded friction course mix-design, is use occasion and the maintenance rule of Asphalt mix for open-graded friction course
It draws and proposes guidance, effectively improve the using effect of Asphalt mix for open-graded friction course.
The technical solution adopted by the present invention to solve the above technical problem is:
Speeding-up simulation device includes rainwater in a kind of Asphalt mix for open-graded friction course drainage performance decaying behavior room of the present invention
Preparation system, rainfall simulation system, testing stand, temperature control box.
The rainwater preparation system includes water butt (1), rainwater blender, water temperature display controller (6), certain pollutant
The rainwater solution of composition.Wherein rainwater blender includes helical-blade (4), shaft coupling (3), motor (2), and middle screw vane can carry out
Rotation stirring, four helical-blades in left and right can carry out revolution stirring, and entire blender can cover in entire water butt (1), it is ensured that
Contaminant particle object and suspended matter etc. are evenly dispersed, guarantee the uniformity of rainwater solution；Water temperature display controller (6) includes being set to
The heating water bath pipe of water butt (1) lower inside wall and set on lateral wall temperature controller form, temperature range be 20 DEG C-
60℃。
The rainfall simulation system includes variable frequency pump (5), flowmeter (9), spray head (11), water pipe (8).Wherein frequency conversion water
Pump (5) is located in water butt (1), by being set to electric machine controller (7) the control electric machine frequency of water pipe (8) lateral wall to change stream
Amount, cooperation flowmeter (9) monitor uninterrupted, the rainfall of analog varying strength in real time；Spray head (11) is located at temperature control box (22)
In, wherein water outlet plate is curved surface, the phenomenon for avoiding rainwater few around more than water outlet plate outflow intermediate region guarantees the uniform of rainfall
Property.
The testing stand includes support frame (18), test specimen supporting surface (17), piece fixture (13), protractor (19), screw
(15), adjustable nut (20).Wherein steel wire and the rubber that can extract of the intermediate position of test specimen supporting surface (17) by 450*450mm
Pad is constituted, and is suitble to all types of test specimens such as marshal piece, SGC test specimen and track plate test specimen, need to be if simulation drainage pavement form
Valve rubber is placed on test specimen supporting surface (17), guarantees that rainwater is only laterally therein discharged from test specimen, if simulation porous pavement form,
Valve rubber is extracted out, rainwater can be discharged vertical and side inside test specimen to comprehensive；Test specimen supporting surface (17) is located at support frame (18)
Above, it is connected using screw (15), the inclination angle of test specimen supporting surface (16) can be changed in the height for adjusting 1-4 adjustable nut (20)
Degree, that is, achieve the purpose that simulated roadway composite gradient；Piece fixture (13) is installed on two opposite side cross of test specimen supporting surface (17)
Bar top is made of front end rubber block, screw and hand handle, after test specimen is placed in test specimen supporting surface (17), is revolved by hand handle
Into screw, until front end rubber block contacts and fix test specimen, guarantee that test specimen is fixed during the test；Measuring angle (19) shares two
It is a, it is located at the edge of (17) two adjacent side cross bars of test specimen supporting surface, the horizontal and vertical gradient of test specimen can be read respectively, when two amounts
The pointer of angle device device is directed to indicate coupon level at 0 °.
The temperature control box (22), internal temperature are controlled by temperature display controller (10), wherein temperature display controller
(10) include the PTC air heater for being set to temperature control box (22) cabinet upper outside wall and temperature controller, temperature range are
20℃-60℃.Temperature display controller (10) is used cooperatively with water temperature display controller (6), and air bath and water-bath are controlled jointly
The temperature of test specimen processed is efficiently solved in previous equipment and is asked using the temperature lag of single air bath conduction heat temperature control method
Topic, influence of the analog varying environment temperature to pitch and particulate matter degree of adhesion；The front of temperature control box (22) is equipped with plug door
(16), plug door (16) are closed during test, reduces temperature control the temperature inside the box and scatters and disappears.
It is a kind of based on above-mentioned testing equipment Asphalt mix for open-graded friction course test specimen drainage performance decaying behavior room in accelerate mould
Quasi- method, comprising the following steps:
A) compound test specimen (14) are formed according to testing regulations, according to " highway engineering pitch and Asphalt Mixture Experiment regulation "
(JTG E20) measures bitumen mixture specimen infiltration coefficient, is denoted as C1。
B) plug door (16) are opened, adjusts adjustable nut (20) and two measuring angle (19) pointers is made to be directed to 0 °, guarantees test specimen
Supporting surface (17) initial level.
If c) simulating drainage pavement form, valve rubber need to be set on test specimen supporting surface (17), make rainwater only from test specimen private side
To discharge；If simulating porous pavement form, valve rubber is extracted out, rainwater can be discharged vertical and side out of test specimen to comprehensive.
D) test specimen (14) is put on test specimen supporting surface (17), and adjusts piece fixture (13) and is fixed；If simulation has vertical
The road surface of transverse slope, the pointer for adjusting 1-4 adjustable nut (20) certain altitude to two protractors (19) are directed toward required angle,
And close plug door (16).
E) particulate matter, muddy object and other materials composition for determining Simulated rainwater, are put into after preparing in proportion from water inlet (23)
In water butt, be configured to certain groups of contaminants at solution in water butt (1), guarantee rainwater enough and test in water surface elevation
Must not be lower than helical-blade (4) height, and rainwater whip switch is opened, helical-blade (4) operates the uniformity to keep rainwater；It beats
Boiled water temperature display controller (6), temperature display controller (10) adjust water temperature and temperature to test requirements document temperature.
F) variable frequency pump (5) switch is opened, and is adjusted to test requirements document flow, cooperates flowmeter (9) real-time monitoring, and start to count
When.Rainwater surplus in observation water butt (1) is paid attention to during test, configures the rainwater of specification concentration in time and from water inlet
(23) amount of rainfall is supplied.
G) it after the test requirements document time to be achieved, takes out test specimen (14), according to " highway engineering pitch and Asphalt Mixture Experiment are advised
Journey " (JTG E20) measurement bitumen mixture specimen infiltration coefficient, be denoted as C2, and calculation testing piece drainage performance declines according to the following formula
Subtract coefficient:The value is smaller show mixture drainage performance require rainfall intensity, rainfall groups of contaminants at, road surface slope
Attenuation degree is higher under the conditions of degree, environment temperature and road surface drainage mode.
In formula, C1--- test specimen infiltration coefficient before testing；C2--- test specimen infiltration coefficient after test；T --- test specimen drainage performance
Attenuation coefficient.
The invention has the beneficial effects that:
Testing equipment of the present invention can simulate the gap structure blocking of Asphalt mix for open-graded friction course and road surface is caused to be arranged
The relaxation phenomenon of aqueous energy.Temperature display controller is used cooperatively with water temperature display controller in this equipment, air bath and water
The temperature for bathing co- controlling test specimen efficiently solves in previous equipment using the temperature of single air bath conduction heat temperature control method
Lag issues, influence of the analog varying environment temperature to pitch and particulate matter degree of adhesion；Sewage stirrer can keep water storage
The uniformity of sewage solution inside case；The all types of examinations such as the applicable marshal piece of test platform, SGC test specimen and track plate test specimen
Part, analog difference road gradient, while analog porous pavement and the two different big gap road surface drainage shapes of drainage pavement
Formula；Rainfall simulation system can simulate the rainfall of varying strength.This equipment compensates for existing Asphalt mix for open-graded friction course drainage
The speeding-up simulation equipment in behavior room of capable of decaying can not analog temperature, not can guarantee sewage solution uniformity, be applicable in test specimen type
It is single, do not account for that road surface is permeable and the difference of draining and the defects of be unable to control rainfall intensity and uniformity, so as to from
Prolonging service life of pavement sets out for angle, provides reference for the design phase of Asphalt mix for open-graded friction course, to big gap pitch
The use occasion of mixture and road maintenance programming propose instruction, effectively improve the popularization of Asphalt mix for open-graded friction course at home.
Detailed description of the invention
Fig. 1 is testing equipment structural schematic diagram of the present invention.
Fig. 2 is water butt overlooking structure diagram in testing equipment of the present invention.
Fig. 3 is testing stand schematic view of the front view in testing equipment of the present invention.
Fig. 4 is testing stand left view structural representation in testing equipment of the present invention.
Fig. 5 is testing stand overlooking structure diagram in testing equipment of the present invention.
Overlooking structure diagram when Fig. 6 is testing stand selection marshal piece in testing equipment of the present invention.
Fig. 7 is measuring angle device schematic view of the front view in testing equipment of the present invention.
Fig. 8 is measuring angle device left view structural representation in testing equipment of the present invention.
Fig. 9 is spray head schematic view of the front view in testing equipment of the present invention.
Figure 10 is spray head overlooking structure diagram in testing equipment of the present invention.
In figure: 1. water butts, 2. motors, 3. shaft couplings, 4. helical-blades, 5. variable frequency pumps, 6. water temperature display controllers, 7.
Electric machine controller, 8. water pipes, 9. flowmeters, 10. temperature display controllers, 11. spray heads, 12. horizontal drawing door handles, 13. test specimens folder
Tool, 14. test specimens, 15. screws, 16. plug doors, 17. test specimen supporting surfaces, 18. support frames, 19. protractors, 20. adjustable nuts,
21. rubber ring, 22. temperature control boxs, 23. water inlets.
Specific embodiment
The specific embodiment of the invention is described in further detail with reference to the accompanying drawing.
Speeding-up simulation device includes: in a kind of Asphalt mix for open-graded friction course drainage performance decaying behavior room as shown in Figure 1
Rainwater preparation system, rainfall simulation system, testing stand, temperature control box.
The rainwater preparation system includes water butt (1), rainwater blender, water temperature display controller (6), certain pollutant
The rainwater solution of composition.Wherein rainwater blender includes helical-blade (4), shaft coupling (3), motor (2), and middle screw vane can carry out
Rotation stirring, four helical-blades in left and right can carry out revolution stirring, and entire blender can cover in entire water butt (1), it is ensured that
Contaminant particle object and suspended matter etc. are evenly dispersed, guarantee the uniformity of rainwater solution；Water temperature display controller (6) includes being set to
The heating water bath pipe of water butt (1) lower inside wall and set on lateral wall temperature controller form, temperature range be 20 DEG C-
60℃。
The rainfall simulation system includes variable frequency pump (5), flowmeter (9), spray head (11), water pipe (8).Wherein frequency conversion water
Pump (5) is located in water butt (1), by being set to electric machine controller (7) the control electric machine frequency of water pipe (8) lateral wall to change stream
Amount, cooperation flowmeter (9) monitor uninterrupted, the rainfall of analog varying strength in real time；Spray head (11) is located at temperature control box (22)
In, wherein water outlet plate is curved surface, the phenomenon for avoiding rainwater few around more than water outlet plate outflow intermediate region guarantees the uniform of rainfall
Property.
The testing stand includes support frame (18), test specimen supporting surface (17), piece fixture (13), protractor (19), screw
(15), adjustable nut (20).Wherein steel wire and the rubber that can extract of the intermediate position of test specimen supporting surface (17) by 450*450mm
Pad is constituted, and is suitble to all types of test specimens such as marshal piece, SGC test specimen and track plate test specimen, need to be if simulation drainage pavement form
Valve rubber is placed on test specimen supporting surface (17), guarantees that rainwater is only laterally therein discharged from test specimen, if simulation porous pavement form,
Valve rubber is extracted out, rainwater can be discharged vertical and side inside test specimen to comprehensive；Test specimen supporting surface (17) is located at support frame (18)
Above, it is connected using screw (15), the inclination angle of test specimen supporting surface (16) can be changed in the height for adjusting 1-4 adjustable nut (20)
Degree, that is, achieve the purpose that simulated roadway composite gradient；Piece fixture (13) is installed on two opposite side cross of test specimen supporting surface (17)
Bar top is made of front end rubber block, screw and hand handle, after test specimen is placed in test specimen supporting surface (17), is revolved by hand handle
Into screw, until front end rubber block contacts and fix test specimen, guarantee that test specimen is fixed during the test；Measuring angle (19) shares two
It is a, it is located at the edge of (17) two adjacent side cross bars of test specimen supporting surface, the horizontal and vertical gradient of test specimen can be read respectively, when two amounts
The pointer of angle device device is directed to indicate coupon level at 0 °.
The temperature control box (22), internal temperature are controlled by temperature display controller (10), wherein temperature display controller
(10) include the PTC air heater for being set to temperature control box (22) cabinet upper outside wall and temperature controller, temperature range are
20℃-60℃.Temperature display controller (10) is used cooperatively with water temperature display controller (6), and air bath and water-bath are controlled jointly
The temperature of test specimen processed is efficiently solved in previous equipment and is asked using the temperature lag of single air bath conduction heat temperature control method
Topic, influence of the analog varying environment temperature to pitch and particulate matter degree of adhesion；The front of temperature control box (22) is equipped with plug door
(16), plug door (16) are closed during test, reduces temperature control the temperature inside the box and scatters and disappears.
It is a kind of based on above-mentioned testing equipment Asphalt mix for open-graded friction course test specimen drainage performance decaying behavior room in accelerate mould
Quasi- method, comprising the following steps:
A) compound test specimen (14) are formed according to testing regulations, according to " highway engineering pitch and Asphalt Mixture Experiment regulation "
(JTG E20) measures bitumen mixture specimen infiltration coefficient, is denoted as C1。
B) plug door (16) are opened, adjusts adjustable nut (20) and two measuring angle (19) pointers is made to be directed to 0 °, guarantees test specimen
Supporting surface (17) initial level.
If c) simulating drainage pavement form, valve rubber need to be set on test specimen supporting surface (17), make rainwater only from test specimen private side
To discharge；If simulating porous pavement form, valve rubber is extracted out, rainwater can be discharged vertical and side out of test specimen to comprehensive.
D) test specimen (14) is put on test specimen supporting surface (17), and adjusts piece fixture (13) and is fixed；If simulation has vertical
The road surface of transverse slope, the pointer for adjusting 1-4 adjustable nut (20) certain altitude to two protractors (19) are directed toward required angle,
And close plug door (16).
E) particulate matter, muddy object and other materials composition for determining Simulated rainwater, are put into after preparing in proportion from water inlet (23)
In water butt, be configured to certain groups of contaminants at solution in water butt (1), guarantee rainwater enough and test in water surface elevation
Must not be lower than helical-blade (4) height, and rainwater whip switch is opened, helical-blade (4) operates the uniformity to keep rainwater；It beats
Boiled water temperature display controller (6), temperature display controller (10) adjust water temperature and temperature to test requirements document temperature.
F) variable frequency pump (5) switch is opened, and is adjusted to test requirements document flow, cooperates flowmeter (9) real-time monitoring, and start to count
When.Rainwater surplus in observation water butt (1) is paid attention to during test, configures the rainwater of specification concentration in time and from water inlet
(23) amount of rainfall is supplied.
G) it after the test requirements document time to be achieved, takes out test specimen (14), according to " highway engineering pitch and Asphalt Mixture Experiment are advised
Journey " (JTG E20) measurement bitumen mixture specimen infiltration coefficient, be denoted as C2, and calculation testing piece drainage performance declines according to the following formula
Subtract coefficient:The value is smaller show mixture drainage performance require rainfall intensity, rainfall groups of contaminants at, road surface slope
Attenuation degree is higher under the conditions of degree, environment temperature and road surface drainage mode.
In formula, C1--- test specimen infiltration coefficient before testing；C2--- test specimen infiltration coefficient after test；T --- test specimen drainage performance
Attenuation coefficient.
Claims (15)
1. speeding-up simulation device in a kind of Asphalt mix for open-graded friction course drainage performance decaying behavior room, it is characterised in that: including rain
Water preparation system, rainfall simulation system, testing stand, temperature control box.
2. speeding-up simulation device in a kind of Asphalt mix for open-graded friction course drainage performance decaying behavior room as described in claim 1,
It is characterized by: the rainwater preparation system includes water butt (1), rainwater blender, water temperature display controller (6), certain dirt
Contaminate the rainwater solution of object composition.
3. speeding-up simulation device in a kind of Asphalt mix for open-graded friction course drainage performance decaying behavior room as claimed in claim 2,
It is characterized by: the rainwater blender includes helical-blade (4), shaft coupling (3), motor (2), middle screw vane can carry out rotation
Stirring, four helical-blades in left and right can carry out revolution stirring, and entire blender can cover in entire water butt (1), it is ensured that pollution
Composition granule object and suspended matter etc. are evenly dispersed, guarantee the uniformity of rainwater solution.
4. speeding-up simulation device in a kind of Asphalt mix for open-graded friction course drainage performance decaying behavior room as claimed in claim 2,
It is characterized by: the water temperature display controller (6) includes being set to the heating water bath pipe of water butt (1) lower inside wall and being set to
The temperature controller of lateral wall forms, and temperature range is 20 DEG C -60 DEG C.
5. speeding-up simulation device in a kind of Asphalt mix for open-graded friction course drainage performance decaying behavior room as described in claim 1,
It is characterized by: the rainfall simulation system includes variable frequency pump (5), flowmeter (9), spray head (11), water pipe (8).
6. speeding-up simulation device in a kind of Asphalt mix for open-graded friction course drainage performance decaying behavior room as claimed in claim 5,
It is characterized by: the variable frequency pump (5) is located in water butt (1), by the electric machine controller (7) for being set to water pipe (8) lateral wall
For control electric machine frequency to change flow, cooperation flowmeter (9) monitors uninterrupted, the rainfall of analog varying strength in real time.
7. speeding-up simulation device in a kind of Asphalt mix for open-graded friction course drainage performance decaying behavior room as claimed in claim 5,
It is characterized by: the spray head (11) is located in temperature control box (22), wherein water outlet plate is curved surface, avoid rainwater from water outlet plate outflow
The intermediate region mostly few phenomenon of surrounding, guarantees the uniformity of rainfall.
8. speeding-up simulation device in a kind of Asphalt mix for open-graded friction course drainage performance decaying behavior room as described in claim 1,
It is characterized by: the testing stand includes support frame (18), test specimen supporting surface (17), piece fixture (13), protractor (19), spiral shell
Silk (15), adjustable nut (20).
9. speeding-up simulation device in a kind of Asphalt mix for open-graded friction course drainage performance decaying behavior room as claimed in claim 8,
It is characterized by: the intermediate position of the test specimen supporting surface (17) is made of the steel wire of 450*450mm and the valve rubber that can be extracted,
It is suitble to all types of test specimens such as marshal piece, SGC test specimen and track plate test specimen, it, need to be in test specimen branch if simulation drainage pavement form
Valve rubber is placed on support face (17), guarantees that rainwater is only laterally therein discharged from test specimen；If porous pavement form is simulated, by rubber
Pad extraction, rainwater can be discharged vertical and side inside test specimen to comprehensive.
10. speeding-up simulation dress in a kind of Asphalt mix for open-graded friction course drainage performance decaying behavior room as claimed in claim 8 or 9
It sets, it is characterised in that: the test specimen supporting surface (17) is located at support frame (18) above, is connected using screw (15), adjusts 1-4
The tilt angle of test specimen supporting surface (16) can be changed in the height of a adjustable nut (20), that is, reaches the mesh of simulated roadway composite gradient
's.
11. speeding-up simulation device in a kind of Asphalt mix for open-graded friction course drainage performance decaying behavior room as claimed in claim 8,
It is characterized by: the piece fixture (13) is installed on two opposite side cross bar tops of test specimen supporting surface (17), by front end rubber
Blob of viscose, screw and hand handle composition, after test specimen is placed in test specimen supporting surface (17), by hand handle precession screw, until front end rubber
Blob of viscose contacts and fixes test specimen, guarantees that test specimen is fixed during the test.
12. speeding-up simulation device in a kind of Asphalt mix for open-graded friction course drainage performance decaying behavior room as claimed in claim 8,
It is characterized by: being located at the edge of (17) two adjacent side cross bars of test specimen supporting surface, difference can there are two the measuring angle (19) is total
To read the horizontal and vertical gradient of test specimen, coupon level is indicated when the pointer of two protractor devices is directed to 0 °.
13. speeding-up simulation device in a kind of Asphalt mix for open-graded friction course drainage performance decaying behavior room as described in claim 1,
It is characterized by: the temperature control box (22), internal temperature is controlled by temperature display controller (10), wherein temperature display control
Device (10) includes the PTC air heater and temperature controller set on temperature control box (22) cabinet upper outside wall, temperature range
It is 20 DEG C -60 DEG C.Temperature display controller (10) is used cooperatively with water temperature display controller (6), and air bath and water-bath are common
The temperature for controlling test specimen is efficiently solved in previous equipment and is asked using the temperature lag of single air bath conduction heat temperature control method
Topic, influence of the analog varying environment temperature to pitch and particulate matter degree of adhesion.
14. speeding-up simulation device in a kind of Asphalt mix for open-graded friction course drainage performance decaying behavior room as described in claim 1,
It is characterized by: the front of the temperature control box (22) is equipped with plug door (16), plug door (16) are closed during test, reduce temperature
The temperature inside the box is controlled to scatter and disappear.
15. one kind is based on a kind of described in any item Asphalt mix for open-graded friction course drainage performance decaying behavior rooms claim 1-14
The method of molding Asphalt mix for open-graded friction course test specimen drainage performance decaying behavior, special in the measuring cell of interior speeding-up simulation device
Sign is to sequentially include the following steps:
A) compound test specimen (14) are formed according to testing regulations, according to " highway engineering pitch and Asphalt Mixture Experiment regulation "
(JTG E20) measures bitumen mixture specimen infiltration coefficient, is denoted as C1。
B) plug door (16) are opened, adjusts adjustable nut (20) and two measuring angle (19) pointers is made to be directed to 0 °, guarantees test specimen
Supporting surface (17) initial level.
If c) simulating drainage pavement form, valve rubber need to be set on test specimen supporting surface (17), make rainwater only from test specimen private side
To discharge；If simulating porous pavement form, valve rubber is extracted out, rainwater can be discharged vertical and side out of test specimen to comprehensive.
D) test specimen (14) is put on test specimen supporting surface (17), and adjusts piece fixture (13) and is fixed；If simulation has vertical
The road surface of transverse slope, the pointer for adjusting 1-4 adjustable nut (20) certain altitude to two protractors (19) are directed toward required angle,
And close plug door (16).
E) particulate matter, muddy object and other materials composition for determining Simulated rainwater, are put into after preparing in proportion from water inlet (23)
In water butt, be configured to certain groups of contaminants at solution in water butt (1), guarantee rainwater enough and test in water surface elevation
Must not be lower than helical-blade (4) height, and rainwater whip switch is opened, helical-blade (4) operates the uniformity to keep rainwater；It beats
Boiled water temperature display controller (6), temperature display controller (10) adjust water temperature and temperature to test requirements document temperature.
F) variable frequency pump (5) switch is opened, and is adjusted to test requirements document flow, cooperates flowmeter (9) real-time monitoring, and start to count
When.Rainwater surplus in observation water butt (1) is paid attention to during test, configures the rainwater of specification concentration in time and from water inlet
(23) amount of rainfall is supplied.
G) it after the test requirements document time to be achieved, takes out test specimen (14), according to " highway engineering pitch and Asphalt Mixture Experiment are advised
Journey " (JTG E20) measurement bitumen mixture specimen infiltration coefficient, be denoted as C2, and calculation testing piece drainage performance declines according to the following formula
Subtract coefficient:The value is smaller show mixture drainage performance require rainfall intensity, rainfall groups of contaminants at, road surface slope
Attenuation degree is higher under the conditions of degree, environment temperature and road surface drainage mode.
In formula, C1--- test specimen infiltration coefficient before testing；C2--- test specimen infiltration coefficient after test；T --- test specimen drainage performance declines
Subtract coefficient.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810920321.1A CN108982823A (en) | 2018-08-14 | 2018-08-14 | Speeding-up simulation device and method in a kind of Asphalt mix for open-graded friction course drainage performance decaying behavior room |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810920321.1A CN108982823A (en) | 2018-08-14 | 2018-08-14 | Speeding-up simulation device and method in a kind of Asphalt mix for open-graded friction course drainage performance decaying behavior room |
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| Publication Number | Publication Date |
|---|---|
| CN108982823A true CN108982823A (en) | 2018-12-11 |
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ID=64552902
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810920321.1A Pending CN108982823A (en) | 2018-08-14 | 2018-08-14 | Speeding-up simulation device and method in a kind of Asphalt mix for open-graded friction course drainage performance decaying behavior room |
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| CN (1) | CN108982823A (en) |
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| CN109448529A (en) * | 2018-12-12 | 2019-03-08 | 桂林理工大学 | Multi-state road surface accelerated loading teaching test instrument |
| CN110231267A (en) * | 2019-03-28 | 2019-09-13 | 广州珠江黄埔大桥建设有限公司 | A kind of device and method of indoor test drainage type asphalt drainage performance |
| CN110849791A (en) * | 2019-12-07 | 2020-02-28 | 郑州市交通规划勘察设计研究院 | Simple testing device for water seepage performance of asphalt test block |
| CN111983205A (en) * | 2020-07-24 | 2020-11-24 | 广西交投科技有限公司 | Castle rut test-based asphalt mixture rut-resistant design method |
| CN112730199A (en) * | 2021-02-01 | 2021-04-30 | 温州市市政工程建设开发公司 | Water permeability detection device and method for permeable asphalt concrete |
| CN113066357A (en) * | 2021-04-01 | 2021-07-02 | 宿迁学院 | Urban planning ground rainwater seepage simulation device |
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| CN111983205B (en) * | 2020-07-24 | 2022-07-01 | 广西交投科技有限公司 | Castle rut test-based asphalt mixture rut-resistant design method |
| CN112730199A (en) * | 2021-02-01 | 2021-04-30 | 温州市市政工程建设开发公司 | Water permeability detection device and method for permeable asphalt concrete |
| CN113066357A (en) * | 2021-04-01 | 2021-07-02 | 宿迁学院 | Urban planning ground rainwater seepage simulation device |
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Application publication date: 20181211 |