CN107340216A - A kind of device and method for being used to test pervious concrete pavement coefficient of permeability - Google Patents
A kind of device and method for being used to test pervious concrete pavement coefficient of permeability Download PDFInfo
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- CN107340216A CN107340216A CN201611216732.XA CN201611216732A CN107340216A CN 107340216 A CN107340216 A CN 107340216A CN 201611216732 A CN201611216732 A CN 201611216732A CN 107340216 A CN107340216 A CN 107340216A
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- pervious concrete
- concrete pavement
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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
Abstract
The invention discloses a kind of device and method for being used to test pervious concrete pavement coefficient of permeability.Device of the present invention includes three test system, water system, water speed adjusting means parts：The test system is the entirety that scale plate, level meter and two cushion blocks are fixed into；The water system includes water tank, water pump and water pipe；The water speed adjusting means includes stop valve and flowmeter；Contain permeable hole on the scale plate；Permeable hole in the water system on one end and scale plate of water pipe connects, and is sequentially connected flowmeter, stop valve and water pump on water pipe, the other end of water pipe is placed in water tank；The scale plate is placed on two cushion blocks in left and right, and the level meter is placed on side on scale plate；The test system is placed on pervious concrete pavement.The present invention is simple in construction, is easy to carry, install, using, it is easy to maintenance, test process takes short, can directly test out the rainfall intensity grade that pervious concrete pavement can tackle.
Description
Technical field
The present invention relates to a kind of instrument for the coefficient of permeability for testing pervious concrete pavement, it is used for more particularly to one kind
Test the device and method of pervious concrete pavement coefficient of permeability.
Background technology
With the proposition of sponge city concept, pervious concrete pavement is more and more applied to urban road, square, public affairs
In garden, cell road, park construction, and coefficient of permeability is one of important indicator of pervious concrete pavement, is directly influenced
Its functional performance degree, therefore corresponding miscellaneous coefficient of permeability test device is developed successively.Permeable system
Several test Main Basiss CJJ/T-135《Water-permeable cement concrete pavement technique code》Constant head test philosophy with
DB11/T-775《Pervious concrete pavement technical regulation》Varying head test philosophy.
Mainly had based on permanent head test philosophy exploitation test equipment in CJJ/T-135：《CN201310218787.4- is saturating
Water cement concrete filtration coefficient test device and method》,《A kind of measurement pervious concretes of CN201320830426.0- are permeable
The experimental rig of coefficient》,《The test device of CN201420110237.0- permeation coefficient of permeable concrete》,
《A kind of concrete permeable factor detection devices of CN201610305628.1-》, and《CN201320425033.1- pervious concretes
Instrument for measuring permeability coefficient》.The device developed based on varying head test philosophy in DB11/T-775 is had《CN201120335375.5-
Water-transmitting coefficient testing instrument of water-transmitting concrete》.
Constant head method of testing test philosophy is clear, the coefficient of permeability Kt for the acquisition tested1Belong to pervious concrete
The build-in attribute on road surface, the rainfall intensity that now pervious concrete pavement can tackle is with coefficient of permeability Kt1And road surface thickness
It is relevant；The coefficient of permeability Kt for the acquisition that varying head method of testing is tested2Belong to the statistics parameter of pervious concrete pavement, do not have
There is very clear principle, corresponding physical index is nor will be apparent that.Directly simulated rainfall process of the invention, can be conveniently
The most heavy showers intensity that test pervious concrete pavement can tackle.
The content of the invention
In order to solve the problems, such as that pervious concrete pavement coefficient of permeability can not link directly with rainfall grade, the present invention discloses
A kind of portable unit for being used to test pervious concrete pavement coefficient of permeability, the device using water system and water speed regulation,
Test system provides the current of specific flow velocity, simulates the rainfall of varying strength；Utilize test system and test road surface visible level
Area (measurement liquid level diameter dx), the rainfall of much intensity can be tackled so as to converse the pervious concrete pavement.
The invention provides a kind of device for being used to test pervious concrete pavement coefficient of permeability, including test system, confession
Three water system, water speed adjusting means parts：The test system is one that scale plate, level meter and two cushion blocks are fixed into
It is overall；The water system includes water tank, water pump and water pipe；The water speed adjusting means includes stop valve and flowmeter；It is described
Contain permeable hole on scale plate
Permeable hole connection in the water system on one end and scale plate of water pipe, be sequentially connected on water pipe flowmeter,
Stop valve and water pump, the other end of water pipe are placed in water tank；
The scale plate is placed on two cushion blocks in left and right, and the level meter is placed on side on scale plate；
The test system is placed on pervious concrete pavement, and judging test system using level meter, whether level is put
Put.
Device of the present invention, described two cushion blocks may be selected the strip plastics that cross section is triangle, two cushion blocks it
Between spacing be at least 20cm, the height of cushion block is at least 1cm.
Device of the present invention, the power of the water pump is 100-1000w, range of flow 20-400L/min.
Device of the present invention, the flow velocity test scope 0-50L/min of the flowmeter, volume flow test scope 0-
10000L, measuring accuracy ＜ 0.05%.
Using a kind of method for testing pervious concrete pavement coefficient of permeability of said apparatus, following step is specifically included
Suddenly：
(1) scale plate containing permeable hole, level meter and cushion block are fixed into an entirety, place it in pervious concrete
On road surface；Permeable hole on one end and scale plate of water pipe is connected, flowmeter, stop valve and water pump are sequentially connected on water pipe,
The other end of water pipe is placed in water tank；
(2) coordinate flowmeter to provide the current of specific flow velocity using water pump, stop valve, simulate the rainfall of varying strength, remember
Record in certain time t by the flow Q of flowmeter 5；
(3) area of test system and test road surface visible level is utilized, the permeable system of pervious concrete pavement can be calculated
Number KT, calculation formula such as following formula：
In formula, KT--- the coefficient of permeability (mm/s) during water temperature T,
Q --- the water difference (ml) shown in special time period t on flowmeter,
The diameter (mm) of dx --- pervious concrete pavement visible level,
T --- the testing time (s),
Liquid level diameter dx is measured, the rainfall of much intensity can be tackled so as to converse the pervious concrete pavement.
The present invention is simple in construction, is easy to carry, install, using, it is easy to maintenance, test process takes short, can directly test
Go out the rainfall intensity grade that pervious concrete pavement can tackle.
Brief description of the drawings
Fig. 1 is the overall structure diagram of device of the present invention.
Fig. 2 is the partial schematic diagram of the scale plate of the present invention containing permeable hole.
Fig. 3 is Fig. 2 side view.
Specifically it is labeled as in Fig. 1~3：1 water tank, 2 water pumps, 3 water pipes, 4 stop valves, 5 flowmeters, 6 scale plates, 7 levels
Instrument, 8 cushion blocks, 9 pervious concrete pavements, 10 permeable holes.
Embodiment
The embodiment of the present invention is described in further detail below in conjunction with the accompanying drawings.
As shown in figure 1, a kind of device for being used to test pervious concrete pavement coefficient of permeability of the present invention, main bag
Include three water system, water speed adjusting means and test system parts：The water system includes water tank 1, water pump 2 and water pipe 3,
The water speed, which is adjusted, mainly includes stop valve 4 and flowmeter 5, and the test system then includes the scale plate 6 containing permeable hole, level
Instrument 7 and two cushion blocks 8.
Scale plate 6 containing permeable hole, level meter 7 and cushion block 8 are fixed into an entirety, referred to as test system, by it
Pervious concrete pavement 9 is placed on, judges whether test system is horizontal positioned using level meter 7；One end of water pipe 3 is connected to
Permeable hole on scale plate 6 containing permeable hole, is sequentially connected flowmeter 5, stop valve 4 and water pump 2 on water pipe 3, water pipe 3 it is another
End is placed in water tank 1.
Operation principle is to coordinate flowmeter 5 to provide the current of specific flow velocity using water pump 2, stop valve 4, simulate different strong
The rainfall of degree, pass through the flow Q of flowmeter 5 in record certain time t；Utilize the area of test system and test road surface visible level
(measurement liquid level diameter dx, the rainfall of much intensity can be tackled so as to converse the pervious concrete pavement.Bring formula into
(1) coefficient of permeability of pervious concrete pavement, can be calculated, calculation formula is as follows：
In formula, KT--- the coefficient of permeability (mm/s) during water temperature T；
Q --- the water difference (ml) shown in special time period t on flowmeter；
The diameter (mm) of dx --- pervious concrete pavement visible level.
T --- the testing time (s)；
The coefficient of permeability and the thickness of pervious concrete pavement calculated by formula (1) is not related, reflects a certain specific saturating
The peculiar coefficient of permeability of water coagulation soil surface, is directly multiplied by the time, can be converted into corresponding rainfall intensity, you can should with reflection
The most heavy showers grade that pervious concrete pavement can tackle.
Obviously, examples detailed above of the invention is just for the sake of clearly demonstrating example of the present invention, and it is pair to be not
The restriction of embodiments of the present invention.For those of ordinary skill in the field, may be used also on the basis of the above description
To make other changes in different forms.Here all embodiments can not be exhaustive.It is every to belong to this hair
Row of the obvious changes or variations that bright technical scheme is amplified out still in protection scope of the present invention.
Embodiment
Processed it is a kind of be used to testing the device of pervious concrete pavement coefficient of permeability, specific parameter and assembled
Journey is as follows：
It is described to be fixed into an entirety, left and right two containing permeable hole and scale plate 6, the level meter 7 and cushion block 8 of triangular-section
Spacing between individual cushion block 8 is 30cm, and the height of cushion block 8 is at least 1.5cm.Water pipe 3 is used directly as 12mm transparent rubber
Flexible pipe, one end are connected to the permeable hole on the scale plate 6 containing permeable hole, and are sequentially connected flowmeter 5, stop valve 4 and water pump 2,
The other end of water pipe 3 is placed in water tank 1.The power of water pump 2 is 200w, range of flow 200L/min.The flow of flowmeter 5 is surveyed
Try scope 0-50L/min, volume flow test scope 0-10000L, measuring accuracy ＜ 0.05%.
Test system is placed on pervious concrete pavement 9, judges whether test system is horizontal positioned using level meter 7；
The current of specific flow velocity are provided using water pump 2, the cooperation flowmeter 5 of stop valve 4, simulate the rainfall of varying strength；It is using test
The area (measurement liquid level diameter dx) of system test pavement visible level, so as to calculate the pervious concrete based on formula (2)
The coefficient of permeability on road surface, being multiplied by 24h can convert the peak rainfall intensity grade that the pervious concrete pavement can tackle.Calculate public
Formula is as follows：
In formula, KT--- the coefficient of permeability (mm/s) during water temperature T；
Q --- the water difference (ml) shown in special time period t on flowmeter；
The diameter (mm) of dx --- pervious concrete pavement visible level.
T --- the testing time (s)；
It is molded thick 10cm, long 80cm, wide 60cm pervious concrete plate respectively using the match ratio in table 1, simulation is permeable
Concrete road surface, the coefficient of permeability of each pervious concrete plate is quickly tested using involved portable unit in the present invention, is multiplied by 24h
The 24h maximum rainfalls that can be tackled can be conversed, specific data are as shown in table 2.
The match ratio of the pervious concrete of table 1
The coefficient of permeability of each pervious concrete plate of table 2 and the most heavy showers amount that 24h can be tackled
Understood using table 2, the coefficient of permeability of each pervious concrete plate quickly tested using heretofore described portable unit,
1#~3# coefficient of permeability is 0.01266mm/s, 0.00588mm/s and 0.00035mm/s respectively, and the 24h that can be tackled most drops by force
Rainfall H (mm) is 1094mm, 508mm and 30mm respectively, and the corresponding most heavy showers grade that can be tackled is extra torrential rain, extra torrential rain
With heavy rain.2#, 4#, 5# coefficient of permeability are 0.00588mm/s, 0.00741mm/s and 0.00481mm/s respectively, can be tackled
24h most heavy showers amount H (mm) are 508mm, 640mm and 416mm respectively, and the corresponding most heavy showers grade that can be tackled is especially big sudden and violent
Rain.
The coefficient of permeability of each pervious concrete plate can be quickly tested by the portable unit being related in the present invention as shown in Table 2,
And the 24h maximum rainfalls of reply can be directly conversed, and then can obtain and can tackle most heavy showers grade.
Claims (5)
- A kind of 1. device for being used to test pervious concrete pavement coefficient of permeability, it is characterised in that：Including test system, supply water system Three system, water speed adjusting means parts：The test system is scale plate（6）, level meter（7）With two cushion blocks（8）It is fixed into An entirety；The water system includes water tank（1）, water pump（2）With water pipe（3）；The water speed adjusting means includes cut-off Valve（4）And flowmeter（5）；The scale plate（6）On contain permeable hole（10）；Water pipe in the water system（3）One end and scale plate on permeable hole（10）Connection, water pipe（3）On be sequentially connected stream Gauge（5）, stop valve（4）With water pump（2）, water pipe（3）The other end be placed on water tank（1）In；The scale plate（6）It is placed in two cushion blocks in left and right（8）On, the level meter（7）It is placed on scale plate（6）Upper side；The test system is placed on pervious concrete pavement.
- A kind of 2. device for being used to test pervious concrete pavement coefficient of permeability according to claim 1, it is characterised in that Described two cushion blocks（8）The strip plastics that cross section is triangle may be selected, the spacing between two cushion blocks is at least 20cm, pads The height of block is at least 1cm.
- A kind of 3. device for being used to test pervious concrete pavement coefficient of permeability according to claim 1, it is characterised in that The water pump（2）Power be 100-1000w, range of flow 20-400L/min.
- A kind of 4. device for being used to test pervious concrete pavement coefficient of permeability according to claim 1, it is characterised in that The flowmeter（5）Flow velocity test scope 0-50 L/min, volume flow test scope 0-10000L, measuring accuracy ＜ 0.05%。
- 5. utilize a kind of side for being used to test pervious concrete pavement coefficient of permeability of any one of Claims 1-4 4 described device Method, it is characterised in that specifically comprise the following steps：（1）Scale plate containing permeable hole, level meter and cushion block are fixed into an entirety, place it in pervious concrete pavement On；Permeable hole on one end and scale plate of water pipe is connected, flowmeter, stop valve and water pump, water pipe are sequentially connected on water pipe The other end be placed in water tank；（2）Coordinate flowmeter to provide the current of specific flow velocity using water pump, stop valve, simulate the rainfall of varying strength, record one Fix time the interior flow Q by flowmeter 5 of t；（3）Using the area of test system and test road surface visible level, the coefficient of permeability K of pervious concrete pavement can be calculated T , Calculation formula such as following formula：,In formula, KT--- coefficient of permeability during water temperature T（mm/s）,Q --- the water difference shown in special time period t on flowmeter（ml）,dx--- the average diameter of pervious concrete pavement visible level（mm）,T --- the testing time（s）,Measure liquid level diameterdx, the rainfall of much intensity can be tackled so as to converse the pervious concrete pavement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611216732.XA CN107340216B (en) | 2016-12-26 | 2016-12-26 | Device and method for testing water permeability coefficient of pervious concrete pavement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611216732.XA CN107340216B (en) | 2016-12-26 | 2016-12-26 | Device and method for testing water permeability coefficient of pervious concrete pavement |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107340216A true CN107340216A (en) | 2017-11-10 |
| CN107340216B CN107340216B (en) | 2020-03-31 |
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| Application Number | Title | Priority Date | Filing Date |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU935752A2 (en) * | 1980-09-18 | 1982-06-15 | Всесоюзный Ордена Трудового Красного Знамени Научно-Исследовательский Институт Гидротехники И Мелиорации Им.А.Н.Костякова | Device for determination of building structure waterproofness |
| CN200993635Y (en) * | 2006-12-21 | 2007-12-19 | 北京市市政工程研究院 | Vacuum water penetrating block permeability coefficient detecting instrument |
| CN101738363A (en) * | 2009-12-28 | 2010-06-16 | 上海嘉洁环保工程有限公司 | Instrument and method for testing permeability coefficient |
| CN102095674A (en) * | 2011-01-24 | 2011-06-15 | 浙江工业大学 | Permeability testing method of water-permeable paving material, and special tester thereof |
| CN102192869A (en) * | 2010-03-11 | 2011-09-21 | 北京仁创科技集团有限公司 | Apparatus and method for detecting permeable performance of permeable material product |
| CN104596910A (en) * | 2015-02-03 | 2015-05-06 | 重庆大学 | In-situ nondestructive concrete permeability testing device and testing method thereof |
| CN104897546A (en) * | 2015-06-09 | 2015-09-09 | 沈阳建筑大学 | Seepage meter used for metering low water permeability coefficient |
| CN204964345U (en) * | 2015-10-16 | 2016-01-13 | 山东大学 | Osmotic coefficient in situ test of porous pavement system appearance |
-
2016
- 2016-12-26 CN CN201611216732.XA patent/CN107340216B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU935752A2 (en) * | 1980-09-18 | 1982-06-15 | Всесоюзный Ордена Трудового Красного Знамени Научно-Исследовательский Институт Гидротехники И Мелиорации Им.А.Н.Костякова | Device for determination of building structure waterproofness |
| CN200993635Y (en) * | 2006-12-21 | 2007-12-19 | 北京市市政工程研究院 | Vacuum water penetrating block permeability coefficient detecting instrument |
| CN101738363A (en) * | 2009-12-28 | 2010-06-16 | 上海嘉洁环保工程有限公司 | Instrument and method for testing permeability coefficient |
| CN102192869A (en) * | 2010-03-11 | 2011-09-21 | 北京仁创科技集团有限公司 | Apparatus and method for detecting permeable performance of permeable material product |
| CN102095674A (en) * | 2011-01-24 | 2011-06-15 | 浙江工业大学 | Permeability testing method of water-permeable paving material, and special tester thereof |
| CN104596910A (en) * | 2015-02-03 | 2015-05-06 | 重庆大学 | In-situ nondestructive concrete permeability testing device and testing method thereof |
| CN104897546A (en) * | 2015-06-09 | 2015-09-09 | 沈阳建筑大学 | Seepage meter used for metering low water permeability coefficient |
| CN204964345U (en) * | 2015-10-16 | 2016-01-13 | 山东大学 | Osmotic coefficient in situ test of porous pavement system appearance |
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| CN107340216B (en) | 2020-03-31 |
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