CN107421867B - A kind of porous asphalt concrete water permeability test device and its test method - Google Patents
A kind of porous asphalt concrete water permeability test device and its test method Download PDFInfo
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- CN107421867B CN107421867B CN201710532328.1A CN201710532328A CN107421867B CN 107421867 B CN107421867 B CN 107421867B CN 201710532328 A CN201710532328 A CN 201710532328A CN 107421867 B CN107421867 B CN 107421867B
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- 239000011384 asphalt concrete Substances 0.000 title claims abstract description 42
- 238000011041 water permeability test Methods 0.000 title claims abstract description 16
- 238000010998 test method Methods 0.000 title abstract description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 98
- 238000012360 testing method Methods 0.000 claims abstract description 90
- 238000003860 storage Methods 0.000 claims abstract description 25
- 239000007788 liquid Substances 0.000 claims abstract description 22
- 238000003756 stirring Methods 0.000 claims abstract description 22
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims abstract description 12
- 230000008595 infiltration Effects 0.000 claims abstract description 10
- 238000001764 infiltration Methods 0.000 claims abstract description 10
- 238000012544 monitoring process Methods 0.000 claims abstract description 6
- 239000011148 porous material Substances 0.000 claims abstract description 3
- 238000000034 method Methods 0.000 claims description 11
- 230000002706 hydrostatic effect Effects 0.000 claims description 6
- 230000008859 change Effects 0.000 claims description 4
- 238000005520 cutting process Methods 0.000 claims description 2
- 238000005553 drilling Methods 0.000 claims description 2
- 239000011521 glass Substances 0.000 claims description 2
- 239000005341 toughened glass Substances 0.000 claims description 2
- 239000002699 waste material Substances 0.000 claims description 2
- 230000035699 permeability Effects 0.000 abstract description 13
- 239000004567 concrete Substances 0.000 abstract description 7
- 239000004593 Epoxy Substances 0.000 description 4
- 239000010426 asphalt Substances 0.000 description 4
- 230000000903 blocking effect Effects 0.000 description 4
- 238000010276 construction Methods 0.000 description 3
- 238000009826 distribution Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 230000015271 coagulation Effects 0.000 description 2
- 238000005345 coagulation Methods 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000011156 evaluation Methods 0.000 description 2
- 238000005070 sampling Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 239000002352 surface water Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 239000005343 cylinder glass Substances 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
- 230000000116 mitigating effect Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 230000003204 osmotic effect Effects 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000009738 saturating Methods 0.000 description 1
- 239000013049 sediment Substances 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 238000011895 specific detection Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000011800 void material Substances 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
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
- G01N15/08—Investigating permeability, pore-volume, or surface area of porous materials
- G01N15/082—Investigating permeability by forcing a fluid through a sample
- G01N15/0826—Investigating permeability by forcing a fluid through a sample and measuring fluid flow rate, i.e. permeation rate or pressure change
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- Dispersion Chemistry (AREA)
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- Life Sciences & Earth Sciences (AREA)
- Fluid Mechanics (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
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- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
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Abstract
The invention discloses a kind of porous asphalt concrete water permeability test device and its test methods, the device has equipment supporter, which has been sequentially arranged slowspeed machine, porous stirring blade, water storage tank, the first aqueduct, the first valve, water container, overflow pipe, the second aqueduct, the second valve, turbine flowmeter, rotary nut, permeable fixed lid, test specimen from top to bottom and has placed container, high precision liquid level gauge, permeable pedestal, drainpipe and seeping container；Silt mixed liquor is pre-placed in water storage tank, it is uniformly mixed by slowspeed machine with porous stirring blade, water container is entered using the first valve controlling flow, with the infiltration flow of turbine flowmeter monitoring celluar concrete, and exudation flow is calculated using liquidometer, to reach permeable to celluar concrete and its Performance Decay monitoring.The present invention is tested for porous material water permeability, effectively has rated the water permeability of bituminous concrete.
Description
Fields
The present invention relates to a kind of porous asphalt concrete water permeability test device and its test methods, belong to pitch coagulation
The detection and assessment technique field of native pavement performance.
Background technique
The concept in " sponge city " be in April, 2012 " 2012 low carbon cities and regional development science and technology forum " for the first time
It proposes, and has obtained the highest attention of domestic scientific research mechanism and manufacturing enterprise.Sponge urban construction to realize to the maximum extent
Rainwater is target in the accumulation of urban area, infiltration and purification, and the road structure as urban transportation important infrastructure,
Huge area and extensive distribution are one of the key facilities for guaranteeing sponge municipal drainage, effectively promote the receipts of rainwater
Collection and outlet.Penetrated asphalt pavement structure has worldwide obtained more application, different types of porous drip
Green concrete also becomes the important guarantee of porous pavement construction.Correlative study shows as made of porous asphalt concrete making
Road structure can effectively exclude surface gathered water, increase the frictional force of wheel and pavement structure, reduce driving water mist and night
Between the road surface phenomenon reflective due to ponding, urban pavement driving safety is improved significantly, in addition, excluding ponding rapidly can also
The water for mitigating road surface damages class disease, extends the service life of pavement structure.
The water permeability of porous asphalt concrete is to ensure that the key point of sponge urban construction, this is just to its water permeability
Intensity and durability propose high requirement, and surface water on the one hand can be effectively excluded in severe Precipitation Process, on the other hand
Good water permeability need to be maintained in the long-term use.Porous asphalt coagulation is mainly evaluated using water creep appearance in existing specification
The water permeability of soil, but the equipment category varying head permeability apparatus, and its data needs artificial read, it is most important that Wu Fakao
Consider the influence that silt ponding decays to drainage performance.For the deficiency of existing bituminous concrete permeance property test device,
And lack the test equipment and technology of evaluation performance of anti-blockage, it is permeable with performance of anti-blockage tester to have invented sponge urban pavement
And its test method, pass through the decaying feelings of road surface water permeability under the conditions of the hybrid analog-digital simulation of subtle silt and water actual environment
Condition, and the real-time record of permeation data is realized, more effectively have evaluated water permeability and the hole of porous asphalt concrete
The development of gap blocking.
Summary of the invention
Technical problem: the object of the present invention is to provide a kind of porous asphalt concrete water permeability test device and its tests
Method, the device effectively have rated the permeance property of the performance of anti-blockage of pervious asphalt concrete, different periods, and different
The water permeability of bituminous concrete under environment solves the deficiency of previous water permeability test equipment, and it is saturating to provide assessment
The validity test method of water performance degradation.
Technical solution: the present invention provides a kind of porous asphalt concrete water permeability test device, which has
Equipment supporter, the equipment supporter be sequentially arranged from top to bottom slowspeed machine, porous stirring blade, water storage tank, the first aqueduct,
First valve, water container, the second aqueduct, the second valve, turbine flowmeter, rotary nut, permeable fixed lid, test specimen are placed and are held
Device, high precision liquid level gauge, permeable pedestal, drainpipe and seeping container；Wherein the top of equipment supporter, band is arranged in slowspeed machine
Porous stirring blade on dynamic slowspeed machine axis is in water storage tank inner rotation；The drain hole of the water storage trench bottom is led by first
Water pipe is communicated with water container, and the flow in the first valve control water storage tank bottom water drain hole is provided on the first aqueduct；It is described
The side wall of water container is equipped with overflow pipe, the water inlet phase that the bottom water drain hole of water container passes through the second aqueduct and permeable fixed lid
Even, the second aqueduct is disposed with the second valve, turbine flowmeter and rotary nut from top to bottom, and will by rotary nut
Second aqueduct is connected with the top water inlet of permeable fixed lid, and the permeable fixed lid is covered on test specimen and places on container
Side, and its structure is cone, top is water inlet, and lower part places container with test specimen and connects；The bottom that test specimen places container is set
It is equipped with permeable pedestal, for the lower infiltration for placing container by test specimen to be discharged；It places for collecting lower infiltration equipment supporter bottom
Seeping container, and equipment supporter lower part setting high precision liquid level gauge to measure the water in seeping container.
Wherein:
The revolving speed of the slowspeed machine is 20r/min~30r/min, the length of the slowspeed machine axis be 0.3m~
0.4m, and have a porous stirring blade along the direction equidistantly distributed of axis, porous stirring blade be equipped with multiple groups diameter be 1cm~
The circular hole of 1.5cm.
The direction equidistantly distributed along axis has porous stirring blade to specifically refer on slowspeed machine axis by spacing
0.1m~0.15m is welded with 2~3 groups of porous stirring blades of wide 2cm~2.5cm, long 0.12m~0.15m, and porous paddle
Piece mutually staggers setting according to 60 °~90 ° of angle.
The water storage tank and water container is hydrostatic column, and its bottom is the inverted conical shape bottom for being provided with drain hole
Plate.
The water storage tank is the hydrostatic column of diameter 0.3m~0.5m, height 0.4m~0.5m, and the water container is straight
The hydrostatic column of diameter 0.2m~0.3m, height 0.1m~0.2m, and the side wall of water container at the 0.02m~0.05m of top away from setting
There is overflow pipe.
The infiltration capacity data of the turbine flowmeter and computer linkage record silt mixed liquor, in the second aqueduct
Under silt mixed liquor full pipe condition, turbine flowmeter can measure amount of seepage in real time to consider shadow that silt blocks gap structure
It rings, the performance of anti-blockage of different porous asphalt concretes is assessed to reach.
It is described the second aqueduct is connected with the top water inlet of permeable fixed lid by rotary nut refer to, the
Two aqueduct lower end outsides and permeable fixation cover and are provided with screw thread on the outside of portion's water inlet, and rotary nut is by screw thread by the
Two aqueducts are connected with permeable fixed lid, and adjust moving up and down for permeable fixed lid by rotating rotary nut, thus solid
Determine and compress test specimen to place container；The outer diameter of the permeable fixed lid lower part is identical as the test specimen placement internal diameter of container, permeable solid
Lid lower edge circumference is determined equipped with rubber washer.
The permeable fixed lid is conical structure, and outer diameter is identical as the test specimen placement internal diameter of container, permeable fixed lid
Lower edge circumference is equipped with rubber washer.
The test specimen places the supreme bottom cylinder glass that container is high 0.10m~0.11m, internal diameter 0.10m~0.11m
Glass bucket wall, side wall surface uses the tempered glass of thickness 0.5cm~1.0cm, internally disposed to have and test specimen placement container size
Consistent cylinder pervious asphalt concrete test specimen, and ensure that test specimen places the closed of container with unsintered tape using waterproof rubber ring
State.
The filter screen that pore diameter range is 1mm~2mm is set between the interface of the water storage tank and the first aqueduct.
The turbine flowmeter is set to the second aqueduct lower part, and the infiltration capacity of real-time monitoring silt mixed liquor changes shape
Condition.
It is 0.3m~0.4m that diameter is placed below the equipment supporter, under the seeping container of high 0.4m~0.5m is for collecting
Waste liquid is seeped, using the liquid capacity in high precision liquid level gauge monitoring seeping container.
The present invention also provides a kind of method of the test of porous asphalt concrete water permeability test device, this method packets
Include following steps:
1) it prepares test specimen: preparing porous asphalt concrete test specimen, using core drilling machine and cutting machine by porous asphalt concrete
Test specimen, which is cut into, places container cylindrical pervious asphalt concrete test specimen of the same size with test specimen；
2) anti-clogging test prepares: test specimen surrounding to be measured wrapped up along test specimen short transverse to be measured using rubber sleeve, and to
The upper/lower terminal of test block is without package；The test specimen to be measured wrapped is put into test specimen to place in container, later to be tested
The upper/lower terminal of part places waterproof rubber gasket, and adjusting rotary nut makes permeable fixed lid that test specimen be placed appearance with permeable pedestal
Device and test specimen to be measured clamp；
3) performance of anti-blockage is tested: preconfigured silt mixed liquor being added in water receiver, and opens slowspeed machine
Power supply is stirred；The first valve is opened, so that silt mixed liquor fills water container and flows out by overflow pipe；Open the second valve
Door, while adjusting the first valve, it is ensured that silt mixed liquor is in full packages situation, and the mud in water container in the second aqueduct
Husky mixed liquor liquid level is remained to maintain an equal level with overflow pipe；Silt is recorded by turbine flowmeter and high precision liquid level gauge in real time later
The seepage discharge situation of change that mixed liquor passes through test specimen to be measured.
The utility model has the advantages that advantages of the present invention is embodied in compared with existing equipment and technology:
1) present invention effectively has rated the performance of anti-blockage of pervious asphalt concrete, is sponge urban water-through ground surface material
Mix-design provide optimum theory foundation；
2) present invention records water permeability attenuation using computer in real time, can be used for assessing pervious asphalt concrete not
With the permeance property of period；
3) present invention can configure the mixed liquor of different sediment contents according to the actual situation, be conducive to drip under evaluation varying environment
The water permeability of green concrete.
Detailed description of the invention
Fig. 1 is overall structure diagram of the invention；
Have in figure: slowspeed machine 1, porous stirring blade 2, water storage tank 3, equipment supporter 4, the first aqueduct 5, the first valve
6, water container 7, overflow pipe 8, the second aqueduct 9, the second valve 10, turbine flowmeter 11, rotary nut 12, permeable fixed lid
13, test specimen places container 14, high precision liquid level gauge 15, permeable pedestal 16, drainpipe 17 and seeping container 18.
Specific embodiment
The purpose of the present invention is described in further detail combined with specific embodiments below, which is only used for more clear
Illustrate to Chu technical solution of the present invention, and not intended to limit the protection scope of the present invention.
As shown in Figure 1, being a kind of porous asphalt concrete water permeability test device of the invention, which has
Equipment supporter 4, the equipment supporter 4 have been sequentially arranged slowspeed machine 1 from top to bottom, porous stirring blade 2, water storage tank 3, first have led
Water pipe 5, the first valve 6, water container 7, it is the second aqueduct 9, the second valve 10, turbine flowmeter 11, rotary nut 12, permeable
Fixed lid 13, test specimen place container 14, high precision liquid level gauge 15, permeable pedestal 16, drainpipe 17 and seeping container 18；
Wherein the top of equipment supporter 4 is provided with slowspeed machine 1, and the porous stirring blade 2 on 1 axis of slowspeed machine is driven to exist
3 inner rotation of water storage tank；The drain hole of 3 bottom of water storage tank is communicated by the first aqueduct 5 with water container 7, and first leads
The flow of the first valve 6 control drain hole is provided on water pipe 5；The side wall of the water container 7 is equipped with overflow pipe 8, water container 7
Bottom water drain hole is connected by the second aqueduct 9 with the water inlet of permeable fixed lid 13, and the second aqueduct 9 is distinguished from top to bottom
It is provided with the second valve 10, turbine flowmeter 11 and rotary nut 12；Rotary nut 12 is set to 9 bottom of the second aqueduct and can
It is freely rotated, rotary nut 12 is by realizing the upper and lower of permeable fixed lid 13 with being threadedly coupled for permeable fixed 13 upper interface of lid
It is mobile；The permeable fixed lid 13 is conical structure, and outer diameter is identical as the test specimen placement internal diameter of container 14, and test specimen, which is placed, to be held
The bottom of device 14 is provided with permeable pedestal 16, for the lower infiltration for placing container 14 by test specimen to be discharged；It puts 4 bottom of equipment supporter
The seeping container 18 for collecting lower infiltration is set, and high precision liquid level gauge 15 is set to measure ponding appearance in 4 lower part of equipment supporter
Water in device 18.
For water storage tank 3 using being made with a thickness of the stainless steel of 2mm~3mm, cylindrical portion height is 0.4m~0.5m, diameter
For 0.3m~0.5m, conical sections height is 0.1m~0.15m, and base diameter is identical as column part.Water storage tank 3 is welded in
4 top of equipment supporter, and placement slowspeed machine 1 is used to stir silt mixed liquor above it.2~3 groups of long 0.12m of setting~
The porous stirring blade of stainless steel of 0.15m, width 2cm~2.5cm are welded in porous stirring blade is organized according to 60 °~90 ° of angle
On motor shaft, every group of blade pitgh is set as 0.1m~0.15m, justifies on blade at a distance of 4cm~5cm drill straight diameter 1cm~1.5cm
Hole.To ensure that silt mixed liquor is uniformly mixed, Low speed electric motor set of frequency is 20r/min~30r/min.
The filter screen that aperture is 1mm~2mm is set between water storage tank 3 and the interface of the first aqueduct 5, prevents big partial size miscellaneous
Matter enters blocking pipeline, to impact to test result, controls lower seepage discharge by the first valve 6.Silt mixed liquor into
Enter water container 7, overflow pipe 8 is set thereon to ensure that the water in water container 7 is constant, to generate phase to porous asphalt concrete
Same osmotic pressure.
Second valve 10 is used to control the flowing of silt mixed liquor, but needs to guarantee silt mixed liquor in the second aqueduct 9
In be in full pipe condition, so that turbine flowmeter 11 more precisely test time seepage discharge.Turbine flowmeter 11 used herein
Precision need to reach 1ml/min, and by being connected to electronic computer, and the flow for recording silt mixed liquor in flow event in real time becomes
Change, to reflect the stopping state of porous asphalt concrete gap structure.
The up and down adjustment of permeable fixed lid 13 may be implemented by rotary nut 12.When upper rotation, permeable fixed lid 13 rises,
Test specimen can be taken out and place container 14, placed back in again after it is put into test test specimen, and backspin rotary nut 12, so that permeable
Fixed lid 13 is fixed and compresses porous test test specimen and test specimen placement container 14, and the lower edge circumference of permeable fixed lid 13 is equipped with rubber
Rubber gasket influences the accuracy of test result to prevent silt mixed liquor from exosmosing.
Seeping container 18 can be used by the silt mixed liquor after porous asphalt concrete test specimen to be collected, and use liquid
Water variation in the 15 pairs of seeping containers 18 of meter of position carries out implementing monitoring, to obtain blocking to the permeable energy of porous asphalt concrete
The influence of power decaying.
The method of the present invention is filled when carrying out performance of anti-blockage test to porous asphalt concrete test specimen using above-mentioned detection
It sets.The porous asphalt concrete test specimen of different gradation structure is prepared by rotary compactor SCG, core boring sampling is simultaneously cut into diameter
The cylinder test specimen to be measured of 100mm, height 100mm, every group of grade distribution structure at least prepare three test test specimens.For blocking test
Silt mixed liquor can be configured according to test specimen void condition, but it is anti-in the gap of comparison different type porous asphalt concrete
In plugging performance test, identical silt mixed liquor need to be used, following embodiments are using small particle macrovoid and big partial size macropore
Gap epoxy asphalt concrete compares the gap performance of anti-blockage of the two as test test specimen, and specific detection method combines following realities
Example is applied to be described below:
The match ratio of small particle macrovoid and big partial size macrovoid epoxy asphalt concrete is completed using marshall's method first
Design, gradation situation and bitumen aggregate ratio are listed in respectively shown in table 1.
The large and small partial size macrovoid epoxy asphalt concrete gradation of table 1
According to above-mentioned gradation and bitumen aggregate ratio, using rotary compactor molded test test specimen, every group of gradation at least forms 3 examinations
Part is tested.To test specimen core boring sampling after molding, it is cut into diameter 100mm, the cylinder specimen of height 100mm is in case survey
Examination.It takes the fine aggregate that maximum particle diameter is 0.075mm to configure silt mixed liquor, produces examination according to the mass ratio 1:10 of fine aggregate and water
It tests and uses silt mixed liquor, and pour into water storage tank 3.It keeps Low speed electric motor 1 to be persistently powered, silt mixed liquor is obtained
Even stirring, in this example, motor speed is set as 20r/min.
It takes out test specimen and places container 14, test specimen to be measured is put into wherein, and be put into outer diameter 100mm in test specimen upper and lower ends,
The waterproof rubber gasket of internal diameter 80mm.Adjusting rotary nut 12 makes permeable fixed lid 13 that test specimen be placed container with permeable pedestal 16
14 clamp.It is first turned on the first valve 6, so that silt mixed liquor fills water container 7, the second valve 10 is opened thereafter, adjusts simultaneously
Save the first valve 6, it is ensured that silt mixed liquor of the silt mixed liquor in the second aqueduct 9 in full packages situation and water container 7
Liquid level and overflow pipe 8 maintain an equal level.
Electronic computer is used to be separately connected turbine flowmeter 11 and high precision liquid level gauge 15 logical to record silt mixed liquor
The changes in flow rate situation before and after Multiple-Hole Specimen is crossed, as shown in table 2.
The test of the large and small partial size macrovoid epoxy asphalt concrete performance of anti-blockage of table 2
Accordingly, the water permeability attenuation of available different types of porous asphalt concrete, so as to basis
Real road environment and traffic condition, preferably suitable grade distribution structure, to reach the long-time service mesh on sponge urban water-through road surface
's.
Above-described embodiment is only the invention patent preferred embodiment, but the scope of protection of the patent of the present invention is not limited to
This.Anyone skilled in the art is in the range disclosed in the invention patent, according to the present invention the skill of patent
Art scheme and its inventive concept are subject to equivalent substitution or change, belong to the scope of protection of the patent of the present invention.
Claims (7)
1. a kind of porous asphalt concrete water permeability test device, it is characterised in that: the test device has equipment supporter
(4), which has been sequentially arranged slowspeed machine (1), porous stirring blade (2), water storage tank (3), first from top to bottom
Aqueduct (5), the first valve (6), water container (7), the second aqueduct (9), the second valve (10), turbine flowmeter (11), rotation
Turn nut (12), permeable fixed lid (13), test specimen placement container (14), high precision liquid level gauge (15), permeable pedestal (16), draining
Manage (17) and seeping container (18)；Wherein slowspeed machine (1) setting drives slowspeed machine (1) axis at the top of equipment supporter (4)
On porous stirring blade (2) in water storage tank (3) inner rotation；The drain hole of water storage tank (3) bottom passes through the first water guide
Pipe (5) is communicated with water container (7), and the first valve (6) control water storage tank (3) bottom water drain is provided on the first aqueduct (5)
The flow in hole；The side wall of the water container (7) is equipped with overflow pipe (8), and the bottom water drain hole of water container (7) passes through the second aqueduct
(9) it is connected with the top water inlet of permeable fixed lid (13), the second aqueduct (9) is disposed with the second valve from top to bottom
(10), turbine flowmeter (11) and rotary nut (12), and pass through rotary nut (12) for the second aqueduct (9) and permeable fixation
The top water inlet of lid (13) is connected, and the permeable fixed lid (13) is covered on test specimen and places above container (14), and it is tied
Structure is cone, and top is water inlet, and lower part places container (14) with test specimen and connects；Test specimen places the bottom setting of container (14)
There are permeable pedestal (16), for the lower infiltration for placing container (14) by test specimen to be discharged；It places for receiving equipment supporter (4) bottom
The lower seeping container (18) to seep water of collection, and in equipment supporter (4) lower part setting high precision liquid level gauge (15) to measure seeping container
(18) liquid capacity in；
Wherein the revolving speed of the slowspeed machine (1) is 20r/min~30r/min, and the length of slowspeed machine (1) axis is
0.3m~0.4m, and have porous stirring blade (2) along the direction equidistantly distributed of axis, and on the porous stirring blade (2)
Bore dia is 1cm~1.5cm；
The direction equidistantly distributed along axis has porous stirring blade (2) to specifically refer on slowspeed machine (1) axis by spacing
0.1m~0.15m is welded with 2~3 groups of porous stirring blades (2) of wide 2cm~2.5cm, long 0.12m~0.15m, and porous stirs
It mixes blade (2) and mutually staggers setting according to 60 °~90 ° of angle；
The water storage tank (3) and water container (7) is hydrostatic column, and its bottom is the inverted conical shape for being provided with drain hole
Bottom plate.
2. a kind of porous asphalt concrete water permeability test device as described in claim 1, it is characterised in that: the water storage
Slot (3) is the hydrostatic column of diameter 0.3m~0.5m, height 0.4m~0.5m；The water container (7) be diameter 0.2m~
The hydrostatic column of 0.3m, height 0.1m~0.2m, and the side wall of water container (7) away from the 0.02m~0.05m of top be equipped with overflow
It manages (8).
3. a kind of porous asphalt concrete water permeability test device as described in claim 1, it is characterised in that: described is logical
It crosses rotary nut (12) and the second aqueduct (9) is connected with the top water inlet of permeable fixed lid (13), refer to and led second
It is provided with screw thread on the outside of water pipe (9) lower end outside and permeable fixed lid (13) top water inlet, rotary nut (12) passes through
Second aqueduct (9) is connected by screw thread with permeable fixed lid (13), and adjusts permeable fixation by rotation rotary nut (12)
Lid (13) moves up and down, and places container (14) to fix and compress test specimen；The outer diameter of described permeable fixed lid (13) lower part
Identical as the test specimen placement internal diameter of container (14), permeable fixed lid (13) lower edge circumference is equipped with rubber washer.
4. a kind of porous asphalt concrete water permeability test device as described in claim 1, it is characterised in that: the examination
Part place container (14) be high 0.10m~0.11m, internal diameter 0.10m~0.11m it is supreme, bottom cylindrical glass bucket wall,
Side wall surface use thickness 0.5cm~1.0cm tempered glass, it is internally disposed have with test specimen place container (14) it is of the same size
Cylindrical pervious asphalt concrete test specimen, and ensure that test specimen places the sealed shape of container (14) using waterproof rubber ring and unsintered tape
State.
5. a kind of porous asphalt concrete water permeability test device as described in claim 1, it is characterised in that: the storage
The filter screen that pore diameter range is 1mm~2mm is set between sink (3) and the interface of the first aqueduct (5).
6. a kind of porous asphalt concrete water permeability test device as described in claim 1, it is characterised in that: the equipment
It is 0.3m~0.4m that diameter is placed below bracket (4), and the seeping container (18) of high 0.4m~0.5m is used to collect lower infiltration waste liquid, and
Using the liquid capacity in high precision liquid level gauge (15) monitoring seeping container (18).
7. a kind of method of the test using porous asphalt concrete water permeability test device as described in claim 1,
It is characterized in that: method includes the following steps:
1) it prepares test specimen: preparing porous asphalt concrete test specimen, using core drilling machine and cutting machine by porous asphalt concrete test specimen
It is cut into and places container (14) cylindrical pervious asphalt concrete test specimen of the same size with test specimen；
2) anti-clogging test prepares: being wrapped up test specimen surrounding to be measured along test specimen short transverse to be measured using rubber sleeve, and to be tested
The upper/lower terminal of part is without package；The test specimen to be measured wrapped is put into test specimen to place in container (14), later to be tested
The upper/lower terminal of part places waterproof rubber gasket, and adjusting rotary nut (12) makes permeable fixed lid (13) and permeable pedestal (16)
Test specimen is placed into container (14) and test specimen to be measured clamps；
3) performance of anti-blockage is tested: preconfigured silt mixed liquor being added in water storage tank (3), and opens slowspeed machine (1)
Power supply be stirred；The first valve (6) are opened, so that silt mixed liquor fills water container (7) and flows by overflow pipe (8)
Out；It opens the second valve (10), while adjusting the first valve (6), it is ensured that silt mixed liquor is in the second aqueduct (9) in full
Tubulose condition, and the silt mixed liquor liquid level in water container (7) remains and maintains an equal level with overflow pipe (8)；Pass through turbine flow later
Meter (11) and high precision liquid level gauge (15) record seepage discharge situation of change of the silt mixed liquor by test specimen to be measured in real time.
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| CN108732336B (en) * | 2018-05-25 | 2021-02-12 | 河海大学 | Water supply and drainage experimental device |
| CN109060628B (en) * | 2018-09-04 | 2023-10-27 | 三峡大学 | Variable head permeation experiment device capable of accurately and rapidly measuring permeability coefficient of soil engineering sample |
| CN110044794A (en) * | 2019-05-06 | 2019-07-23 | 宁夏大学 | Bituminous concrete block permeation permeability performance tester |
| CN112240862B (en) * | 2020-09-28 | 2022-06-17 | 广东冠粤路桥有限公司 | Detection device and detection method for detecting drainage coefficient of drainage asphalt pavement |
| CN113340786B (en) * | 2021-06-03 | 2024-05-10 | 中电建十一局工程有限公司 | Detection device and detection method for pervious concrete |
| CN113866061A (en) * | 2021-08-24 | 2021-12-31 | 广西交科集团有限公司 | Test device capable of testing blockage degree of pervious concrete under different rainfall conditions |
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