CN209513547U - A kind of portable pervious concrete pavement device for testing permeability coefficient - Google Patents
A kind of portable pervious concrete pavement device for testing permeability coefficient Download PDFInfo
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- CN209513547U CN209513547U CN201920223865.2U CN201920223865U CN209513547U CN 209513547 U CN209513547 U CN 209513547U CN 201920223865 U CN201920223865 U CN 201920223865U CN 209513547 U CN209513547 U CN 209513547U
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Abstract
The utility model discloses a kind of portable pervious concrete pavement device for testing permeability coefficient, belong to porous material permeance property detection field.The portable pervious concrete pavement device for testing permeability coefficient of the utility model, it drives injection ram cylinder using servo motor to carry out water filling simulation process of osmosis, the seepage discharge of certain time can be conversed according to the water filling revolving speed of servo motor, and osmotic pressure is detected using pressure sensor, all data in infiltration coefficient test process obtains more accurate and conveniently, improves the measuring accuracy of infiltration coefficient；It is controlled by revolving speed of the controller to servo motor, the discharge pressure of controlled injection piston cylinder, meets the penetration testing requirement of different chocking-up degree samples；And test device be not necessarily to large scale overflow cylinder, structure is simple, small in size, it is easy to carry, it can be achieved that pervious concrete pavement on-the-spot test.
Description
Technical field
The utility model relates to a kind of device for testing permeability coefficient of seepy material, more specifically to a kind of portable
Formula pervious concrete pavement device for testing permeability coefficient.
Background technique
With the fast development of urbanization, hard surface area is increased rapidly, and directly destroying soil can naturally osmotic rain
The function of water, rainwash increases when rainfall, causes a series of water, ecology, the environment such as urban heat land effect is obvious, waterlogging takes place frequently
Problem.In recent years, sponge urban construction is carried out in China energetically, and natural way is combined with artificial measures, is ensuring city row
Water is prevented waterlogging under the premise of safety, realizes that rainwater in the accumulation, infiltration and purification of urban area, promotes rainwater resource to the maximum extent
Utilization and ecological environmental protection.Pervious concrete as the important materials in sponge urban construction, have suitable resistance to compression and
Flexural strength, and preferable water penetration and durability.However, pervious concrete is in use, collected due to rainfall
Contain a large amount of dust particle in water flow on to road surface, in drainage procedure, these dust particles can constantly enter with water flow
Hole inside water coagulation soil, partial particulate can be trapped in pore channel, cause penetrability hole inside pervious concrete
Blocking causes its permeability to decay, reduced service life.Therefore, the permeance property that need to detect pervious concrete pavement in time is
The optimization design on road surface and the selection of maintenance measure provide foundation.
Mainly based on indoor test, process is complex for existing pervious concrete pavement material permeability coefficient test.It is existing
Field test device and method also have been reported that, such as China Patent No. ZL201510677350.6, authorized announcement date is in November, 2017
10 days, invention and created name are as follows: porous pavement system infiltration coefficient in-situ test instrument and test method, the in situ of this application are surveyed
Examination instrument includes Road System, basic pipe fitting, measurement pipe fitting and water system, wherein basic pipe fitting it is vertical be installed on Road System
Interior, the top of the bottom end and basic pipe fitting that measure pipe fitting is cooperatively connected；Water system includes the valve and stream being arranged on outlet pipe
Meter.This application solves the problems, such as the in-situ test of pervious concrete pavement infiltration coefficient to a certain extent, obtains to be measured
Infiltration coefficient change procedure data at point.But this device reserves sample to be tested by the setting of pipe fitting, hinders to be measured
The connection of sample and periphery material causes plugging particle that can not enter sample from horizontal direction, therefore simulation authenticity is poor, and
And the detection of pervious concrete stopping state is unsatisfactory.In addition, existing device for testing permeability coefficient is usually required using size
Higher overflow cylinder permeates pressurization to realize, causes the size of test device larger, not readily portable, more for on-the-spot test
It is inconvenient；And existing device for testing permeability coefficient needs more sensing element to detect the relevant parameter in test process, structure
It is complex with controlling.
Summary of the invention
1. utility model technical problems to be solved
The purpose of the utility model is to overcome existing pervious concrete infiltration coefficient testing scheme there are test condition with
Porous pavement real working condition differs larger and test device the deficiencies of structure is complicated, inconvenient to carry, provides a kind of portable
Water coagulation soil surface device for testing permeability coefficient drives injection to live using the technical solution of the utility model using servo motor
Plug cylinder simulates process of osmosis to carry out water filling, and the osmotic flow of certain time can be conversed according to the water filling revolving speed of servo motor
Amount, and detect osmotic pressure using pressure sensor, all data of infiltration coefficient test obtain more accurate and conveniently, improve
The measuring accuracy of infiltration coefficient；And test device is not necessarily to large scale overflow cylinder, and structure is simple, small in size, easy to carry, can
Realize the on-the-spot test of pervious concrete pavement.
2. technical solution
In order to achieve the above objectives, technical solution provided by the utility model are as follows:
A kind of portable pervious concrete pavement device for testing permeability coefficient of the utility model, including water supply device and infiltration
Saturating device, the water supply device include controller, servo motor, transmission mechanism, injection ram cylinder, pressure sensor, water tank
And water inlet pipe, the controller are electrically connected with the control signal input of servo motor, the drive shaft of the servo motor
It is sequentially connected by the movable end of transmission mechanism and injection ram cylinder, is lived for the rotary motion of servo motor to be converted to injection
The linear motion of plug cylinder movable end, the injection ram cylinder have a water-injecting cavity, which passes through the first shut-off valve all the way
It is connected with water inlet pipe, another way is connected by the second shut-off valve with water tank, and the pressure sensor is set to the branch of water inlet pipe
On, and pressure sensor is electrically connected with the controller；The water inlet pipe is connected with permeability apparatus.
Further, the permeability apparatus includes water inlet head, sealing clamp, latex film and specimen holder, described
Water inlet head is connected with water inlet pipe, and the diameter of water inlet head and the diameter of sample match, and the water inlet head bottom is logical
It crosses latex film and sample is wrapped to form one, and the head bottom that intakes passes through sealing clamp with latex film and encapsulates connection, the examination
On the outside of the sample of sample clamp installation after packaging.
Further, the water inlet head includes upper and bottom section, and the upper and bottom section is fixed to be connected
Connect, and form the cavity of sealing between upper and bottom section, the middle part of the upper part be equipped with connection water inlet pipe into
Water hole, the inlet opening are connected with cavity, and the bottom surface of the lower part is uniformly provided with the small through hole of several connection cavitys.
Further, the upper and bottom section is connected through a screw thread, the height of the cavity be 5mm~
10mm, the diameter of the small through hole are 2.5mm~5mm.
Further, the specimen holder is made of two semicircular cylinders in left and right, and the side of two semicircular cylinders in left and right is logical
Hinge connection is crossed, the other side is connected by tight locking button.
Further, rubber ring is additionally provided on the inner sidewall of the specimen holder.
Further, the transmission mechanism is screw nut driving mechanism.
3. beneficial effect
Using technical solution provided by the utility model, compared with existing well-known technique, there is following remarkable result:
(1) a kind of portable pervious concrete pavement device for testing permeability coefficient of the utility model utilizes servo electricity
Machine drives injection ram cylinder to carry out water filling simulation process of osmosis, can converse a timing according to the water filling revolving speed of servo motor
Between seepage discharge, and detect osmotic pressure using pressure sensor, all data in infiltration coefficient test process obtains more
Add accurate and conveniently, improves the measuring accuracy of infiltration coefficient；And test device is not necessarily to large scale overflow cylinder, structure is simple,
It is small in size, it is easy to carry, it can be achieved that pervious concrete pavement on-the-spot test；
(2) a kind of portable pervious concrete pavement device for testing permeability coefficient of the utility model, can pacify sample
It loaded in pervious concrete pavement preformed hole, and is fitted close between the two, is able to achieve effective circulation migration of plugging particle, leads to
It crosses and reserves sample to be tested in true porous pavement, improve the infiltration coefficient measuring accuracy of pervious concrete pavement；And single
After test, sample can be put back in pervious concrete pavement preformed hole, it is saturating convenient for obtaining different phase in order to the test of next time
The infiltration coefficient of water coagulation soil surface, to obtain the stopping state of pervious concrete pavement；
(3) a kind of portable pervious concrete pavement device for testing permeability coefficient of the utility model, passes through controller
The steering of servo motor is controlled, and cooperates the opening and closing of two groups of shut-off valve, realizes the inflow and outflow of injection ram cylinder；It is logical
It crosses controller to control the revolving speed of servo motor, the discharge pressure of controlled injection piston cylinder meets different chocking-up degrees
The penetration testing requirement of sample；The water yield of injection ram cylinder can be accurately calculated according to the revolving speed of servo motor simultaneously, also
It is the seepage discharge for flowing through sample, the simpler convenience of test process, testing efficiency and precision are higher；
(4) a kind of portable pervious concrete pavement device for testing permeability coefficient of the utility model, permeability apparatus
Head intake using fabricated structure, it can be achieved that water inlet, savings and the dispersion of water flow, penetrate into sample in which ensure that uniform fluid flow
Portion；
(5) a kind of portable pervious concrete pavement device for testing permeability coefficient of the utility model, permeability apparatus are adopted
It is wrapped to form one with will intake head and sample of latex film, and realizes the sealing on top using sealing clamp, while using sample
Sample after clamp encapsulation, effectively prevents water flow and reveals around sample, guarantees water flow from sample top to bottom
One-Dimensional flows；
(6) a kind of portable pervious concrete pavement device for testing permeability coefficient of the utility model, specimen holder by
The semicircular cylinder composition of left and right two, the side of two semicircular cylinders in left and right are connected by a hinge, and the other side is connected by tight locking button, sample
Clamping is simple and convenient；And it is additionally provided with rubber ring on the inner sidewall of specimen holder, further improves the leakproofness around sample.
Detailed description of the invention
Fig. 1 is a kind of structural representation of portable pervious concrete pavement device for testing permeability coefficient of the utility model
Figure；
Fig. 2 is the water inlet head in a kind of portable pervious concrete pavement device for testing permeability coefficient of the utility model
Structural schematic diagram；
Fig. 3 is the specimen enclosure in a kind of portable pervious concrete pavement device for testing permeability coefficient of the utility model
Structural schematic diagram；
Fig. 4 is the specimen holder in a kind of portable pervious concrete pavement device for testing permeability coefficient of the utility model
Structural schematic diagram.
Label declaration in schematic diagram:
1, controller；2, servo motor；3, transmission mechanism；4, injection ram cylinder；5, pressure sensor；6, water tank；7,
One shut-off valve；7 ', second shut-off valve；8, water inlet pipe；9, water inlet head；9-1, upper part；9-2, cavity；9-3, lower part；9-4,
Inlet opening；9-5, small through hole；10, sealing clamp；11, latex film；12, sample；13, specimen holder；13-1, hinge；13-2, lock
It links closely；14, rubber ring.
Specific embodiment
For the content for further appreciating that the utility model, the utility model is described in detail in conjunction with the accompanying drawings and embodiments.
Embodiment
As shown in connection with fig. 1, a kind of portable pervious concrete pavement device for testing permeability coefficient of the present embodiment, including supply
Water installations and permeability apparatus two parts, permeability apparatus are used for clamping sample 12, and water supply device is for the sample into permeability apparatus
12 water fillings are to simulate process of osmosis.Wherein, water supply device includes controller 1, servo motor 2, transmission mechanism 3, injection ram cylinder
4, pressure sensor 5, water tank 6 and water inlet pipe 8, controller 1 is electrically connected with the control signal input of servo motor 2, for controlling
The drive shaft of the steering of servo motor 2 processed and revolving speed, servo motor 2 is passed by the movable end of transmission mechanism 3 and injection ram cylinder 4
Dynamic connection, for the rotary motion of servo motor 2 to be converted to the linear motion of 4 movable end of injection ram cylinder, in the present embodiment
In, transmission mechanism 3 preferably uses screw nut driving mechanism, and stable transmission, transmission accuracy is higher；Certainly, transmission mechanism 3 can also
The transmission mechanism of linear motion, such as rack and pinion drive mechanism etc. can be converted rotational motion into using other.Injection is lived
Plug cylinder 4 has a water-injecting cavity, which passes through the first shut-off valve 7 all the way and be connected with water inlet pipe 8, and another way passes through the second cut-off
Valve 7 ' is connected with water tank 6,7 ' independent control of the first shut-off valve 7 and the second shut-off valve, both manually controllable switch, in this reality
It applies in example, 7 ' one open-one close of the first shut-off valve 7 and the second shut-off valve, note can be realized in the telescopic direction of cooperation injection ram cylinder 4
The water inlet or water outlet of water cavity, i.e., when the first shut-off valve 7 is closed, the second shut-off valve 7 ' is opened, and servo motor 2 passes through driver at this time
Structure 3 drives 4 movable end of injection ram cylinder to be moved to the left, and can suck the water in water tank 6 in water-injecting cavity, when the first shut-off valve 7
It opens, the second shut-off valve 7 ' is closed, and servo motor 2 drives 4 movable end of injection ram cylinder to move right by transmission mechanism 3 at this time
It is dynamic, the water in water-injecting cavity can be injected in water inlet pipe 8, water inlet pipe 8 is connected with permeability apparatus, can inject water into infiltration dress
It sets to simulate the process of osmosis of sample 12；Pressure sensor 5 is set to the branch road of water inlet pipe 8, and pressure sensor 5 and controller
1 electrical connection, pressure sensor 5 are used to detect the intake pressure (i.e. osmotic pressure) in water inlet pipe 8, and the pressure that will test
Information feeds back to controller 1.Since the water-injecting cavity sectional dimension of injection ram cylinder 4 is certain, moved right according to its movable end
Dynamic distance it can be learnt that sample 12 seepage discharge, and the movable end moving distance due to injection ram cylinder 4 and servo motor 2
Revolving speed it is related, therefore according to the revolving speed of servo motor 2 can calculate sometime in seepage discharge.Therefore, in use
The device for testing permeability coefficient stated, it is only necessary to record the osmotic pressure in interval of time and be calculated according to the revolving speed of servo motor
The seepage discharge in this time can calculate the infiltration coefficient of pervious concrete sample out.Above-mentioned water supply device passes through control
Device 1 processed controls the steering of servo motor 2, and cooperate two groups of shut-off valve opening and closing, realize injection ram cylinder 4 water inlet and
Water outlet；It is controlled, the discharge pressure of controlled injection piston cylinder 4, is met not by revolving speed of the controller 1 to servo motor 2
With the penetration testing requirement of chocking-up degree sample；Injection ram cylinder can be accurately calculated according to the revolving speed of servo motor 2 simultaneously
Water yield, that is, the seepage discharge of sample is flowed through, the simpler convenience of test process, testing efficiency and precision are higher.
In order to improve test accuracy, need to guarantee 12 side of sample in permeability apparatus without leak, for this purpose, such as Fig. 1 and
Shown in Fig. 3, the permeability apparatus in the present embodiment includes water inlet head 9, sealing clamp 10, latex film 11 and specimen holder 13, water inlet
First 9 are connected with water inlet pipe 8, and the diameter of the diameter and sample 12 of head 9 of intaking matches, and water inlet 9 bottom of head passes through latex film 11
Be wrapped to form one with sample 12, and intake 9 bottom of head and latex film 11 is connected by the encapsulation of sealing clamp 10, to avoid water from
The leakage of 11 upper end of latex film, the above-mentioned preferred diameter of latex film 11 are slightly less than the rubber finger sleeve of 12 outer diameter of sample, have good bullet
Property, convenient for connecting sample 12 with water inlet head package, and play the role of sealing 12 periphery of sample；Specimen holder 13 clamps
12 outside of sample of installation after packaging, is clamped the sample 12 for being enclosed with latex film 11 by specimen holder 13, avoids
Water is leaked from 12 surrounding of sample, guarantees One-Dimensional flows of the water flow from 12 top of sample to bottom.In addition, as shown in Fig. 2, at this
In embodiment, water inlet head 9 uses fabricated structure comprising upper part 9-1 and lower part 9-3, upper part 9-1 and lower part 9-
3 are fixedly connected, and are preferably connected through a screw thread, and the cavity 9-2 of sealing, the sky are formed between upper part 9-1 and lower part 9-3
The highly preferred of chamber 9-2 is 5mm~10mm, and the middle part of upper part 9-1 is equipped with the inlet opening 9-4 of connection water inlet pipe 8, the inlet opening
9-4 is connected with cavity 9-2, and the bottom surface of lower part 9-3 is uniformly provided with the small through hole 9-5 of several connection cavity 9-2, the small through hole
The diameter of 9-5 is preferably 2.5mm~5mm, combined type using the above structure water inlet head, it can be achieved that the water inlet of water flow, savings and
Dispersion, penetrates into inside sample in which ensure that uniform fluid flow.As shown in figure 4, for the ease of the clamping of sample 12, in the present embodiment
In, specimen holder 13 is made of two semicircular cylinders in left and right, and the side of two semicircular cylinders in left and right is connected by hinge 13-1, the other side
It is connected by tight locking button 13-2, tight locking button 13-2 can be fixedly clamped by bolt to realize.In use, by the sample after encapsulation
12 are placed between two halves fixture, and two halves fixture is closed and is locked, specimen clamping is simple and convenient.In addition, specimen holder 13
Inner sidewall on be additionally provided with rubber ring 14, rubber ring 14 it is neither too hard, nor too soft, further improve the leakproofness around sample.
A kind of portable pervious concrete pavement device for testing permeability coefficient of the present embodiment is driven using servo motor
Injection ram cylinder simulates process of osmosis to carry out water filling, and the infiltration of certain time can be conversed according to the water filling revolving speed of servo motor
Saturating flow, and osmotic pressure is detected using pressure sensor, all data in infiltration coefficient test process obtains more accurate
And conveniently, the measuring accuracy of infiltration coefficient is improved；And test device is not necessarily to large scale overflow cylinder, and structure is simple, small in size,
It is easy to carry, it can be achieved that pervious concrete pavement on-the-spot test.
A kind of test method of portable pervious concrete pavement device for testing permeability coefficient of the present embodiment, passes through confession
Water installations simulate the process of osmosis of sample 12 to the permeability apparatus water filling equipped with sample 12, control servo electricity using controller 1
Revolving speed of the machine 2 in water filling, and convert to obtain the seepage discharge in certain time interval according to the revolving speed, remembered using controller 1
The water filling water flow pressure obtained by pressure sensor 5 is recorded, the coefficient of permeability K of sample 12 is obtained by following calculation formula:
In formula, K is infiltration coefficient (mm/s)；Δ t is time interval (s)；Q is the seepage discharge in time interval Δ t
(m3)；L is specimen height (mm)；ρ is the density (kg/m of water3)；G is acceleration of gravity (N/kg)；P is pressure sensor record
Water flow pressure, i.e. osmotic pressure (Pa)；S is specimen cross sectional area (m2)。
It specifically includes step in detail below:
S1, the preformed hole that certain size is arranged on pervious concrete pavement at a certain distance are several, and using identical
The production of pervious concrete material is placed in preformed hole with the close-fitting sample 12 of preformed hole, while being compiled to each sample 12
Number；Specifically in the present embodiment, diameter is reserved on pervious concrete pavement every 50m to be 50mm, be highly the reserved of 100mm
3, hole；Compared with patent ZL201510677350.6, sample 12 is installed in pervious concrete pavement preformed hole, and the two it
Between be fitted close, be able to achieve plugging particle effective circulation migration, by true porous pavement reserve sample to be tested, improve
The infiltration coefficient measuring accuracy of pervious concrete pavement；
S2, sample to be tested 12 is taken out out of preformed hole, and sufficiently impregnated, missed in order to avoid being measured caused by absorbing water because of sample 12
Difference；And the sample 12 after immersion is packed into permeability apparatus；Specifically, clamping of the sample 12 in permeability apparatus uses is situated between above
The structure to continue, i.e., will sample 12 and water inlet head 9 splice after wrapped up using latex film 11, and with sealing clamp 10 on top by sample
Packaged sample 12, is then packed into specimen holder 13 and fixes to clamp by 12 encapsulation；
S3, the first shut-off valve 7 is closed, opens the second shut-off valve 7 ', the control rotation of servo motor 2 is so that injection ram cylinder 4
Movable end move backward, the water-injecting cavity on the right side of injection ram cylinder 4 is filled by water by water tank 6, while by water inlet pipe 8 and infiltration
Device connects；
S4, the first shut-off valve 7 is opened, closes the second shut-off valve 7 ', and controlled servo motor 2 and reversely rotate so that injection is lived
The movable end of plug cylinder 4 moves forward, the water filling simulation process of osmosis of sample 12 into permeability apparatus；
S5, the seepage discharge Q in certain time interval Δ t is calculated according to the water filling revolving speed of servo motor 2, and recorded
Pressure sensor 5 detects obtained osmotic pressure P, substitutes into the coefficient of permeability K that above-mentioned formula (1) calculates sample 12；
S6, step S2~S5 is repeated, each sample 12 is tested respectively using three different osmotic pressures, is averaged
Value is used as test result, to improve computational accuracy；Sample 12 is put back in former preformed hole after test, to be tested to next,
Convenient for obtaining the infiltration coefficient of different phase pervious concrete pavement, to obtain the stopping state of pervious concrete pavement.
A kind of portable pervious concrete pavement device for testing permeability coefficient of the utility model is driven using servo motor
Dynamic injection ram cylinder simulates process of osmosis to carry out water filling, can converse certain time according to the water filling revolving speed of servo motor
Seepage discharge, and osmotic pressure is detected using pressure sensor, all data in infiltration coefficient test process obtains more smart
Really and conveniently, the measuring accuracy of infiltration coefficient is improved；It is controlled by revolving speed of the controller to servo motor, can control note
The discharge pressure for penetrating piston cylinder meets the penetration testing requirement of different chocking-up degree samples；And test device is not necessarily to large scale
Overflow cylinder, structure is simple, small in size, it is easy to carry, it can be achieved that pervious concrete pavement on-the-spot test.
Schematically the utility model and embodiments thereof are described above, description is not limiting, attached drawing
Shown in be also one of the embodiments of the present invention, actual structure is not limited to this.So if this field
Those of ordinary skill enlightened by it, without deviating from the purpose of the present invention, without creatively designing
Frame mode similar with the technical solution and embodiment, all should belong to the protection range of the utility model.
Claims (7)
1. a kind of portable pervious concrete pavement device for testing permeability coefficient, including water supply device and permeability apparatus, feature
Be: the water supply device includes controller (1), servo motor (2), transmission mechanism (3), injection ram cylinder (4), pressure biography
Sensor (5), water tank (6) and water inlet pipe (8), the controller (1) and the control signal input of servo motor (2) are electrically connected
It connects, the drive shaft of the servo motor (2) is sequentially connected by the movable end of transmission mechanism (3) and injection ram cylinder (4), is used
In the linear motion that the rotary motion of servo motor (2) is converted to injection ram cylinder (4) movable end, the injection ram cylinder
(4) there is a water-injecting cavity, which passes through the first shut-off valve (7) all the way and be connected with water inlet pipe (8), and another way passes through second section
Only valve (7 ') is connected with water tank (6), and the pressure sensor (5) is set to the branch road of water inlet pipe (8), and pressure sensor
(5) it is electrically connected with controller (1)；The water inlet pipe (8) is connected with permeability apparatus.
2. a kind of portable pervious concrete pavement device for testing permeability coefficient according to claim 1, it is characterised in that:
The permeability apparatus includes water inlet head (9), sealing clamp (10), latex film (11) and specimen holder (13), the water inlet
Head (9) is connected with water inlet pipe (8), and the diameter of the diameter and sample (12) of the water inlet head (9) matches, the water inlet
Head (9) bottom is wrapped to form one by latex film (11) and sample (12), and head (9) bottom that intakes passes through with latex film (11)
Sealing clamp (10) encapsulation connection, the specimen holder (13) are clamped and installed on the outside of the sample (12) after encapsulation.
3. a kind of portable pervious concrete pavement device for testing permeability coefficient according to claim 2, it is characterised in that:
The water inlet head (9) includes upper part (9-1) and lower part (9-3), and the upper part (9-1) and lower part (9-3) are solid
It connects calmly, and forms the cavity (9-2) of sealing, the upper part (9-1) between upper part (9-1) and lower part (9-3)
Middle part be equipped with connection water inlet pipe (8) inlet opening (9-4), which is connected with cavity (9-2), under described
Partially the bottom surface of (9-3) is uniformly provided with the small through hole (9-5) of several connections cavity (9-2).
4. a kind of portable pervious concrete pavement device for testing permeability coefficient according to claim 3, it is characterised in that:
The upper part (9-1) and lower part (9-3) is connected through a screw thread, and the height of the cavity (9-2) is 5mm~10mm,
The diameter of the small through hole (9-5) is 2.5mm~5mm.
5. a kind of portable pervious concrete pavement device for testing permeability coefficient according to Claims 2 or 3 or 4, special
Sign is: the specimen holder (13) is made of two semicircular cylinders in left and right, and the side of two semicircular cylinders in left and right passes through hinge
(13-1) connection, the other side are connected by tight locking button (13-2).
6. a kind of portable pervious concrete pavement device for testing permeability coefficient according to claim 5, it is characterised in that:
Rubber ring (14) are additionally provided on the inner sidewall of the specimen holder (13).
7. a kind of portable pervious concrete pavement device for testing permeability coefficient according to claim 1, it is characterised in that:
The transmission mechanism (3) is screw nut driving mechanism.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920223865.2U CN209513547U (en) | 2019-02-22 | 2019-02-22 | A kind of portable pervious concrete pavement device for testing permeability coefficient |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920223865.2U CN209513547U (en) | 2019-02-22 | 2019-02-22 | A kind of portable pervious concrete pavement device for testing permeability coefficient |
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| CN209513547U true CN209513547U (en) | 2019-10-18 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109612910A (en) * | 2019-02-22 | 2019-04-12 | 常州工程职业技术学院 | A kind of portable pervious concrete pavement device for testing permeability coefficient and test method |
| CN114942213A (en) * | 2022-07-25 | 2022-08-26 | 东北大学 | Asphalt concrete permeability coefficient testing arrangement |
-
2019
- 2019-02-22 CN CN201920223865.2U patent/CN209513547U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109612910A (en) * | 2019-02-22 | 2019-04-12 | 常州工程职业技术学院 | A kind of portable pervious concrete pavement device for testing permeability coefficient and test method |
| CN114942213A (en) * | 2022-07-25 | 2022-08-26 | 东北大学 | Asphalt concrete permeability coefficient testing arrangement |
| CN114942213B (en) * | 2022-07-25 | 2022-10-25 | 东北大学 | Asphalt concrete permeability coefficient testing device |
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