KR101523067B1 - Apparatus for measuring coefficient of permeability and permeability test method using thereof - Google Patents
Apparatus for measuring coefficient of permeability and permeability test method using thereof Download PDFInfo
- Publication number
- KR101523067B1 KR101523067B1 KR1020140174134A KR20140174134A KR101523067B1 KR 101523067 B1 KR101523067 B1 KR 101523067B1 KR 1020140174134 A KR1020140174134 A KR 1020140174134A KR 20140174134 A KR20140174134 A KR 20140174134A KR 101523067 B1 KR101523067 B1 KR 101523067B1
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- sample
- sample receiving
- permeability
- tube
- valve
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- 230000035699 permeability Effects 0.000 title claims abstract description 92
- 238000010998 test method Methods 0.000 title claims description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 51
- 238000012360 testing method Methods 0.000 claims abstract description 24
- 230000008878 coupling Effects 0.000 claims description 30
- 238000010168 coupling process Methods 0.000 claims description 30
- 238000005859 coupling reaction Methods 0.000 claims description 30
- 238000012856 packing Methods 0.000 claims description 25
- 238000005070 sampling Methods 0.000 claims description 14
- 238000000034 method Methods 0.000 claims description 9
- 238000007789 sealing Methods 0.000 claims description 7
- 238000007599 discharging Methods 0.000 claims 1
- 239000003673 groundwater Substances 0.000 abstract description 4
- 230000000694 effects Effects 0.000 abstract description 2
- 239000010426 asphalt Substances 0.000 description 9
- 238000005303 weighing Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 4
- 239000002689 soil Substances 0.000 description 3
- 238000011041 water permeability test Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 239000013049 sediment Substances 0.000 description 2
- 229920003002 synthetic resin Polymers 0.000 description 2
- 239000000057 synthetic resin Substances 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
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Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01G—WEIGHING
- G01G19/00—Weighing apparatus or methods adapted for special purposes not provided for in the preceding groups
-
- 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
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/38—Concrete; Lime; Mortar; Gypsum; Bricks; Ceramics; Glass
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/42—Road-making materials
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- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Health & Medical Sciences (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Pathology (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- Immunology (AREA)
- Engineering & Computer Science (AREA)
- Medicinal Chemistry (AREA)
- Food Science & Technology (AREA)
- Ceramic Engineering (AREA)
- Dispersion Chemistry (AREA)
- Sampling And Sample Adjustment (AREA)
Abstract
A permeability tester is disclosed. The water permeability tester of the present invention comprises: a burette member supplied with water from a water tank provided at an upper portion of a housing; A sample receiving member having an inlet valve and a drain valve, the sample receiving member being configured to receive a sample to be measured of permeability coefficient, the burette member and the inlet valve being connected by a hose or a pipe; A drain tank configured to receive water drained from the sample storage member and having an inlet connection valve connected to the drain valve via a hose or a pipe; And a controller for measuring the amount of water supplied from the burette member to the sample receiving member and the time taken for the water supplied from the burette member to pass through the sample receiving member to be displayed on the display unit in numeric data . According to the present invention, it is possible to test the permeability coefficient without disturbing the groundwater sample taken from the ground or the sea floor, and to measure the permeability coefficient automatically so that the permeability coefficient test can be performed accurately and easily Effect can be provided.
Description
The present invention relates to a permeability tester and a permeability testing method using the same, and more particularly, to a permeability tester capable of testing the permeability coefficient without disturbing the groundwater sample collected from the ground or the sea floor, And a permeability test method using the same.
Generally, when concrete or asphalt is packed on the road, a permeability test is carried out in order to ascertain the degree of permeability such as rainwater.
In the permeability test, in order to determine the permeability of the asphalt pavement, a permeability tester is placed at the packing site, the pavement and the tester are sealed, and then the water is poured to perform the permeability test on the variable. And there is a disadvantage that the permeability coefficient can not be obtained. Since only a certain amount of water is measured as the time passed, a permeability test is made mainly for relative comparison.
On the other hand, KSF 2494 (Indoor Pore Test Method for Mixed Asphalt Mixture) is specified for the permeability test for the drainage asphalt mixture.
Indoor permeability test method includes the variable permeability test to obtain the permeability coefficient by using the relationship between the descent of the water level and the elapsed time caused by penetrating the sample with a certain diameter and length, There is a pure water permeability test in which the permeability coefficient is obtained by measuring the flow rate penetrating within a predetermined time by the water permeability test.
The variable permeability test is suitable for the test of relatively low permeability of the clayey soil and the pure water permeability test is suitable for the test of the sample whose permeability coefficient is relatively large.
However, in the case of hardened concrete or asphalt, the watertightness is high, so there is a limit to the measurement of the permeability coefficient by the pressure due to the head difference in the permeability test or the variable permeability test. That is, since watertightness of concrete or asphalt is high, it takes a long time for water to pass through the water column difference. Therefore, the measurement time of the permeability coefficient is long and the amount of water passing through concrete or asphalt is small.
As a conventional technique, a permeability coefficient measuring apparatus is disclosed in Korean Patent No. 10-1421690 (publication date: 2014.07.22). The permeability coefficient measuring apparatus according to the prior art has the advantage of measuring the permeability coefficient by measuring the permeability coefficient by injecting pressure water into concrete or asphalt specimen having high watertightness and measuring the permeability coefficient of the watertightness. , It was difficult to measure the permeability coefficient of high fluidity samples and it was inconvenient to manually record and calculate the permeability coefficient data.
An object of the present invention is to provide a permeability coefficient tester capable of testing the permeability coefficient without disturbing the groundwater sample taken from the ground or the seabed and automatically measuring the permeability coefficient and providing a permeability test method using the same will be.
The present invention has been made to solve the above-mentioned problems, and it is an object of the present invention to at least partially solve the problems in the conventional arts. It can be understood.
According to the present invention, the above object can be accomplished by providing a burette comprising: a burette member supplied with water from a water tank provided at an upper portion of a housing; A sample receiving member having an inlet valve and a drain valve and configured to receive a sample to be measured of permeability coefficient so that the burette member and the inlet valve are connected to each other by a hose or a pipe and seated in the middle portion of the housing; And a weighing device for receiving the water drained from the sample receiving member and having an inlet connection valve connected to the drain valve by a hose or a pipe and measuring the amount of water passing through the sample receiving member, A drain tank located at a lower portion of the housing; And a controller for measuring the amount of water supplied from the burette member to the sample receiving member and the time taken for the water supplied from the burette member to pass through the sample receiving member to be displayed on the display unit in numerical data, The sample receiving member includes a sample receiving tube formed in a cylindrical shape to receive a sample, and having a sealing packing at an upper end and a lower end, respectively; A lower coupling member configured to be hermetically coupled to a lower end of the sample storage tube and provided with the drain valve; An upper coupling member configured to be hermetically coupled to an upper end of the sample receiving tube, the upper coupling member having the inlet valve; And a plurality of fastening bolts for fastening the upper and lower fastening members such that airtightness is maintained between the upper and lower fastening members and the sample receiving pipe while the sample receiving pipe is positioned between the upper and lower fastening members, Wherein the sealing packing is provided between the outer circumferential surface of the sample collection tube inserted into the sample storage tube and the airtightness between the inner circumferential surface of the sample storage tube and the outer circumferential surface of the sample collection tube is maintained Inner circumferential packing; And a cross-sectional packing provided between the lower end surface of the sample-receiving tube and the upper surface of the lower joining member, and between the upper end surface and the lower surface of the upper joining member to maintain airtightness between the sample receiving tube and the upper and lower joining members And a water permeability coefficient tester.
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And a vacuum generator for evacuating the interior of the sample storage member and the drain tank, wherein the vacuum generator comprises a vacuum generator; A vacuum degree indicator connected to the vacuum generator and configured to display a degree of vacuum and provided in the housing; And a vacuum hose having one end connected to the vacuum generator or the vacuum degree indicator and the other end selectively connected to a vacuum generation valve provided in the drain tank.
According to the present invention, there is provided a permeability testing method using a permeability tester, comprising the steps of: a) inserting a sample collection tube containing a sample collected from a land or sea floor into a sample collection tube, , Coupling the lower joining member to maintain airtightness; b) After the step a), the inlet valve and the burette member of the sample storage member are connected to each other by a hose or a pipe, and the drain valve of the sample storage member and the inlet connection valve of the drain tank are connected by a hose or a pipe, Connecting the vacuum hose of the generator to the vacuum generating valve of the drain tank; c) after the step b), closing the inlet valve and operating the vacuum generator to generate vacuum pressure inside the sample receiving member and inside the drain tank; And d) when vacuum pressure is generated in the interior of the sample storage member and the inside of the drain tank by the step c), the vacuum generating valve is closed and the inlet valve is opened, And a water permeability coefficient of the sample is tested by allowing the sample to be drained to the drain tank through the sample.
The method of claim 1, wherein the step a) includes inserting the sample collection tube into the sample collection tube so that disturbance does not occur in the sample, and a-1) contacting the lower collection member with the upper end of the sample collection tube containing the sample, Turning the sampling pipe and the lower joining member upside down so that the lower end of the sampling pipe faces upward; a-2) inserting the sample collecting tube into the sample receiving tube; And a-3) when the sample collecting tube is inserted into the sample receiving tube, the upper coupling member is closely attached to the upper end of the sample receiving tube, and then the upper and lower coupling members are coupled by a plurality of fastening bolts And the like.
In the step a-1), an inner circumferential surface packing is provided between the inner circumferential surface of the sample receiving tube and the outer circumferential surface of the sample sampling tube, and the upper surface and the upper surface of the lower connecting member, A cross-sectional packing can be provided between the bottom surfaces of the two side plates.
According to the present invention, it is possible to test the permeability coefficient without disturbing the groundwater sample taken from the ground or the sea floor, and to measure the permeability coefficient automatically so that the permeability coefficient test can be performed accurately and easily Effect can be provided.
1 is a perspective view showing a permeability tester according to the present invention.
Fig. 2 is a perspective view showing a sample receiving member of the permeability tester shown in Fig. 1. Fig.
3 is a sectional view showing the sample receiving member shown in Fig.
4 is a schematic block diagram for explaining a method of testing the permeability coefficient according to the present invention.
Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the following description of the present invention, the well-known functions or constructions are not described in order to simplify the gist of the present invention.
FIG. 1 is a perspective view showing a permeability tester according to the present invention, FIG. 2 is a front view showing a permeability tester shown in FIG. 1, and FIG. 3 is a cross- Fig. And FIG. 4 is a schematic block diagram for explaining a method of testing the permeability coefficient according to the present invention.
1 through 4, the
This will be described more specifically.
The burette member (40) is connected to the water tank (30) to receive water from the water tank (30). At this time, since the
The
At this time, the
The
The
The inner
The inner
On the other hand, disk-shaped synthetic resin materials are respectively installed on the surfaces of the upper and lower
The
A
The vacuum generator 90 includes a vacuum generator 92 and a vacuum generator 90. The vacuum generator 90 includes a vacuum generator 90 and a vacuum generator 90. The vacuum generator 90 is a vacuum pump, A vacuum degree indicator 94 provided at the
The
The
On the other hand, the
As shown in FIGS. 1 and 2, the number of
Hereinafter, a method of testing the permeability coefficient of a soil, a sediment, a concrete, and an asphalt of a land by using the
a) Step
In order to perform the permeability test using the
Subsequently, the
In this way, it is important to prevent the disturbance of the sample taken during the process of inserting the
a-1) Step
The
a-2) Step
When the
At this time, airtightness is maintained between the upper and lower outer circumferential surfaces of the
Step a-3)
When the
By this process, the sample in the
b) Step
The
c) Step
After the above step b), the
d) Step
When vacuum pressure is generated inside the
That is, when the
At this time, the
In this way, the permeability coefficient can be tested without disturbing the sediment samples collected from the soil or the sea floor, and the permeability coefficient can be measured automatically, so that the permeability test of the sample can be performed quickly, accurately and easily .
While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, It is obvious to those who have. Accordingly, it should be understood that such modifications or alterations should not be understood individually from the technical spirit and viewpoint of the present invention, and that modified embodiments fall within the scope of the claims of the present invention.
10: Permeability coefficient tester 20: Housing
30: water tank 40: burette member
50: sample housing member 51: upper coupling member
52: inlet valve 53: lower coupling member
54: Drain valve 55: Sample collection tube
56,62: Hose
59: Sampling pipe 60: Drain tank
64: Receiving connection valve 70: Sealing packing
72: inner circumferential packing 74: sectional packing
80: Weighing instrument 90: Vacuum generator
100: control unit 110: display unit
Claims (8)
A sample receiving member having an inlet valve and a drain valve, the sample receiving member being configured to receive a sample to be measured of permeability coefficient, the burette member and the inlet valve being connected by a hose or a pipe;
A drainage tank provided with a water measuring valve for measuring the amount of water having passed through the sample receiving member, the drainage tank having a drain connection valve connected to the drainage valve by a hose or a pipe and configured to receive water drained from the sample storage member; ; And
And a controller for measuring the amount of water supplied from the burette member to the sample receiving member and the time taken for the water supplied from the burette member to pass through the sample receiving member to be displayed on the display unit in numeric data,
The sample-
A sample receiving tube formed in a cylindrical shape to receive the sample and having a sealing packing at an upper end and a lower end, respectively;
A lower coupling member configured to be hermetically coupled to a lower end of the sample storage tube and provided with the drain valve;
An upper coupling member configured to be hermetically coupled to an upper end of the sample receiving tube, the upper coupling member having the inlet valve; And
And a plurality of fastening bolts for fastening the upper and lower coupling members so that airtightness is maintained between the upper and lower coupling members and the sample receiving pipe while the sample receiving pipe is positioned between the upper and lower coupling members, ≪ / RTI >
The sealing packing may include:
An inner circumferential surface packing provided between the inner circumferential surface of the sample receiving tube and the outer circumferential surface of the sample collecting tube inserted into the sample receiving tube so as to maintain airtightness between the inner circumferential surface of the sample receiving tube and the outer circumferential surface of the sample collecting tube; And
And a cross-sectional packing provided between the lower end surface of the sample receiving tube and the upper surface of the lower joining member, and between the upper end surface and the lower surface of the upper joining member to maintain airtightness between the sample receiving tube and the upper and lower joining members ≪ / RTI >
Permeability tester.
A vacuum generating device for evacuating the inside of the sample storage member and the drain tank is provided,
The vacuum generator comprises:
A vacuum generator;
A vacuum degree indicator connected to the vacuum generator and configured to display a degree of vacuum and provided in the housing; And
And a vacuum hose connected at one end to the vacuum generator or the vacuum degree indicator and at the other end to a vacuum generating valve provided at the drain tank.
Permeability tester.
a) inserting the sample collecting tube containing the sample collected from the land or the sea floor into a sample receiving tube of the sample receiving member, and then coupling the upper and lower coupling members to the upper and lower sides of the sample receiving tube so as to maintain airtightness ;
b) After the step a), the inlet valve and the burette member of the sample storage member are connected to each other by a hose or a pipe, and the drain valve of the sample storage member and the inlet connection valve of the drain tank are connected by a hose or a pipe, Connecting the vacuum hose of the generator to the vacuum generating valve of the drain tank;
c) after the step b), closing the inlet valve and operating the vacuum generator to generate vacuum pressure inside the sample receiving member and inside the drain tank; And
d) if vacuum pressure is generated inside the sample storage member and inside the drain tank by the step c), the vacuum generation valve is closed and the inlet valve is opened so that the water of the burette member Passing the sample through the drainage tank and discharging it to the drainage tank to test the permeability coefficient of the sample.
Permeability test method using permeability tester.
The step a)
The sample collecting tube is inserted into the sample receiving tube so that disturbance of the collected sample does not occur,
a-1) placing a lower joining member on the upper end of the sample-sampling tube in which the sample is housed, turning the sample-sampling tube and the lower joining member upside down so that the lower end of the sample-sampling tube faces upward;
a-2) inserting the sample collecting tube into the sample receiving tube; And
a-3) When the sample collecting tube is inserted into the sample receiving tube, the upper coupling member is closely attached to the upper end of the sample receiving tube, and then the upper and lower coupling members are coupled by a plurality of fastening bolts ≪ / RTI >
Permeability test method using permeability tester.
The step (a-1)
A packing for an inner circumferential surface is provided between the inner circumferential surface of the sample receiving tube and the outer circumferential surface of the sample collecting tube and a packing for a cross section is provided between the lower end surface of the sample receiving tube and the upper surface of the lower coupling member, Characterized in that,
Permeability test method using permeability tester.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020140174134A KR101523067B1 (en) | 2014-12-05 | 2014-12-05 | Apparatus for measuring coefficient of permeability and permeability test method using thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020140174134A KR101523067B1 (en) | 2014-12-05 | 2014-12-05 | Apparatus for measuring coefficient of permeability and permeability test method using thereof |
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| Publication Number | Publication Date |
|---|---|
| KR101523067B1 true KR101523067B1 (en) | 2015-05-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR1020140174134A KR101523067B1 (en) | 2014-12-05 | 2014-12-05 | Apparatus for measuring coefficient of permeability and permeability test method using thereof |
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| Country | Link |
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| KR (1) | KR101523067B1 (en) |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101734988B1 (en) | 2015-09-02 | 2017-05-24 | 부산대학교 산학협력단 | Equipment to Evaluate Infiltration and Evaporation Characteristics of Permeable Pavement Systems |
| KR101740709B1 (en) * | 2015-12-31 | 2017-06-09 | 건국대학교 산학협력단 | Apparatus for measuring coefficient of Interface Permeability AND Permeability test method using thereof |
| KR101796629B1 (en) | 2016-01-15 | 2017-12-01 | 부산대학교 산학협력단 | Equipment to Evaluate Clogging and Containments Filtering Performance of Permeable Pavement-Soil Systems |
| KR101804376B1 (en) * | 2016-03-11 | 2017-12-04 | 부경대학교 산학협력단 | Apparatus for concurrently determining hydraulic conductivity, dispersivity and effective porosity of soils, and method for determining hydraulic conductivity, dispersivity and effective porosity of soils using the same apparatus |
| KR101900704B1 (en) | 2017-08-10 | 2018-09-20 | 부산대학교 산학협력단 | Equipment to test non-linear permeability characteristics of permeable block system with large section considering clogging |
| KR101907608B1 (en) | 2017-05-08 | 2018-10-15 | 서울대학교산학협력단 | Apparatus and Method of Constant Head Permeability Test |
| KR101900706B1 (en) * | 2017-08-10 | 2018-11-05 | 부산대학교 산학협력단 | Equipment to test non-linear permeability characteristics of permeable pavement base materials considering clogging |
| CN109342293A (en) * | 2018-11-19 | 2019-02-15 | 北京林业大学 | A kind of easy device measuring saturated hydraulic conductivity |
| KR20200001079A (en) | 2018-06-26 | 2020-01-06 | 부산대학교 산학협력단 | Equipment and procedure to evaluate the coefficient of horizontal permeability of permeable pavements with varying hydraulic gradient |
| CN112179829A (en) * | 2020-10-30 | 2021-01-05 | 陕西地建土地工程技术研究院有限责任公司 | Improved soil saturation hydraulic conductivity detection method |
| KR102436913B1 (en) * | 2022-06-22 | 2022-08-25 | 한국시험연구원(주) | Undisturbed soil sample collecting and permeability testing method for in-situ permeability test |
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| KR200438330Y1 (en) * | 2007-02-13 | 2008-02-11 | 한국지질자원연구원 | Sample holder for permeability test |
| KR20130018017A (en) * | 2011-08-12 | 2013-02-20 | 한국지질자원연구원 | Apparatus for water permeability and consolidation test |
| KR101421690B1 (en) * | 2013-05-09 | 2014-07-22 | 명지대학교 산학협력단 | Apparatus for measuring coefficient of permeability |
-
2014
- 2014-12-05 KR KR1020140174134A patent/KR101523067B1/en active IP Right Grant
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR200438330Y1 (en) * | 2007-02-13 | 2008-02-11 | 한국지질자원연구원 | Sample holder for permeability test |
| KR20130018017A (en) * | 2011-08-12 | 2013-02-20 | 한국지질자원연구원 | Apparatus for water permeability and consolidation test |
| KR101421690B1 (en) * | 2013-05-09 | 2014-07-22 | 명지대학교 산학협력단 | Apparatus for measuring coefficient of permeability |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101734988B1 (en) | 2015-09-02 | 2017-05-24 | 부산대학교 산학협력단 | Equipment to Evaluate Infiltration and Evaporation Characteristics of Permeable Pavement Systems |
| KR101740709B1 (en) * | 2015-12-31 | 2017-06-09 | 건국대학교 산학협력단 | Apparatus for measuring coefficient of Interface Permeability AND Permeability test method using thereof |
| KR101796629B1 (en) | 2016-01-15 | 2017-12-01 | 부산대학교 산학협력단 | Equipment to Evaluate Clogging and Containments Filtering Performance of Permeable Pavement-Soil Systems |
| KR101804376B1 (en) * | 2016-03-11 | 2017-12-04 | 부경대학교 산학협력단 | Apparatus for concurrently determining hydraulic conductivity, dispersivity and effective porosity of soils, and method for determining hydraulic conductivity, dispersivity and effective porosity of soils using the same apparatus |
| KR101907608B1 (en) | 2017-05-08 | 2018-10-15 | 서울대학교산학협력단 | Apparatus and Method of Constant Head Permeability Test |
| KR101900704B1 (en) | 2017-08-10 | 2018-09-20 | 부산대학교 산학협력단 | Equipment to test non-linear permeability characteristics of permeable block system with large section considering clogging |
| KR101900706B1 (en) * | 2017-08-10 | 2018-11-05 | 부산대학교 산학협력단 | Equipment to test non-linear permeability characteristics of permeable pavement base materials considering clogging |
| KR20200001079A (en) | 2018-06-26 | 2020-01-06 | 부산대학교 산학협력단 | Equipment and procedure to evaluate the coefficient of horizontal permeability of permeable pavements with varying hydraulic gradient |
| CN109342293A (en) * | 2018-11-19 | 2019-02-15 | 北京林业大学 | A kind of easy device measuring saturated hydraulic conductivity |
| CN112179829A (en) * | 2020-10-30 | 2021-01-05 | 陕西地建土地工程技术研究院有限责任公司 | Improved soil saturation hydraulic conductivity detection method |
| CN112179829B (en) * | 2020-10-30 | 2024-04-05 | 陕西地建土地工程技术研究院有限责任公司 | Improved soil saturated water conductivity detection method |
| KR102436913B1 (en) * | 2022-06-22 | 2022-08-25 | 한국시험연구원(주) | Undisturbed soil sample collecting and permeability testing method for in-situ permeability test |
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