CN211718059U - Permeable coefficient testing device for permeable concrete standard test block - Google Patents
Permeable coefficient testing device for permeable concrete standard test block Download PDFInfo
- Publication number
- CN211718059U CN211718059U CN202020021483.4U CN202020021483U CN211718059U CN 211718059 U CN211718059 U CN 211718059U CN 202020021483 U CN202020021483 U CN 202020021483U CN 211718059 U CN211718059 U CN 211718059U
- Authority
- CN
- China
- Prior art keywords
- water
- test piece
- test block
- container
- placing container
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Landscapes
- Testing Resistance To Weather, Investigating Materials By Mechanical Methods (AREA)
Abstract
The utility model discloses a concrete standard test block coefficient of permeability testing arrangement permeates water, including the overflow tank, measure a section of thick bamboo, the container is placed to the test piece, overflow water storage container and supporting member, measure a section of thick bamboo setting and measure a section of thick bamboo play water end and test piece and place container intake end fluid turn-on connection directly over the container is placed to the test piece, the container setting is placed directly over the supporting member to the test piece, the test piece is placed the container and is set up respectively in the overflow tank and the test piece place the container upper end top and be located the below of overflow tank notch, be equipped with the outlet pipe on the overflow tank lateral wall. The utility model discloses utilize the supporting component to place container and overflow tank bottom separation with the test piece, reduce reverse rivers to the influence from the water of the concrete standard that permeates water top flow direction of permeating water concrete standard below, improve the accuracy of the concrete coefficient of permeating water survey that permeates water, be favorable to the researcher to select the better concrete formula that permeates water of a coefficient of permeating water and intensity matching degree.
Description
Technical Field
The utility model relates to a concrete test technical field permeates water. In particular to a permeable coefficient testing device for a permeable concrete standard test block.
Background
The pervious concrete is a mixed material with a certain porosity and is formed by mixing cement, water and reinforcing agent with high-quality aggregates with the same grain size or with discontinuous gradation. When the composite material is made into concrete pavements, revetments and products thereof, the composite material can achieve the effects of drainage, skid resistance, sound absorption, noise reduction and water seepage, can improve the ecological cycle of the earth surface, is beneficial to driving traffic safety, protects the living environment and solves the negative influence caused by large-scale modern city construction. Engineering practice proves that the water-permeable concrete is a novel multifunctional paving material. In view of the contradiction between the permeability coefficient of pervious concrete and its strength, i.e. the higher the permeability coefficient is, the lower the strength of pervious concrete will be, in order to obtain a better pervious concrete formulation on the premise of obtaining a better permeability coefficient and strength matching, it is usually necessary to test the permeability coefficient and strength of pervious concrete. However, in the test process, because the distance between the bottom of the container for placing the test piece and the bottom of the overflow tank is short, water flowing from the upper part of the pervious concrete standard piece to the lower part of the pervious concrete standard piece is influenced by reverse water flow, so that the permeability coefficient measured by the existing pervious concrete permeability coefficient test yellow paper is small, and a pervious concrete formula with better permeability coefficient and strength matching degree cannot be selected by researchers.
SUMMERY OF THE UTILITY MODEL
Therefore, the utility model aims to solve the technical problem that a concrete standard test block permeability coefficient testing arrangement permeates water is provided, utilize supporting member to place the container with the test piece and separate with the spillway tank bottom, reduce the influence of reverse rivers to the water from permeating water concrete standard top flow direction and permeating water concrete standard below, improve the accuracy of the concrete permeability coefficient survey of permeating water, be favorable to the researcher to select the better concrete formula of permeating water of a permeability coefficient and intensity matching degree.
In order to solve the technical problem, the utility model provides a following technical scheme:
the testing device for the water permeability coefficient of the pervious concrete standard test block comprises an overflow tank, a measuring cylinder, a test piece placing container, an overflow water storage container and a supporting member, wherein the measuring cylinder is arranged right above the test piece placing container, the water outlet end of the measuring cylinder is in fluid conduction connection with the water inlet end of the test piece placing container, the test piece placing container is arranged right above the supporting member, the test piece placing container and the supporting member are respectively arranged in the overflow tank, the top of the upper end of the test piece placing container is positioned below the notch of the overflow tank, the side wall of the overflow tank is provided with a water outlet pipe, the water outlet pipe is provided with a flowmeter for water outlet measurement, and the water outlet end of the water outlet pipe is in fluid conduction connection with the water inlet end of the overflow water storage container; an overflow pipe which is communicated and connected with fluid inside the measuring cylinder is arranged on the side wall of the measuring cylinder with scales, and a water stop valve is arranged on the overflow pipe; the water outlet end of the water inlet thermostatic controller is in fluid conduction connection with the water inlet end of the water inlet pipe, and the water outlet end of the water inlet pipe is in fluid conduction connection with the water inlet end of the measuring cylinder; a water stop valve and a flowmeter for water inlet measurement are arranged on the water inlet pipe; the supporting member is a perforated glass plate; an electronic thermometer is arranged in the measuring cylinder; a test piece sleeved with a rubber test piece sleeve is placed in the test piece placing container, and the outer side wall of the rubber test piece sleeve is in sealing contact with the inner wall of the test piece placing container; the measuring cylinder and the test piece placing container are detachably connected.
In the permeable coefficient testing device for the permeable concrete standard test block, the side wall of the measuring cylinder is provided with more than or equal to 2 overflow pipes along the axial direction of the measuring cylinder; the water outlet end of the water inlet pipe is arranged in the measuring cylinder, and water flowing out of the water outlet end of the water inlet pipe is in contact with the inner wall of the measuring cylinder.
According to the device for testing the water permeability coefficient of the permeable concrete standard test block, the upper end of the porous glass plate is provided with the four bolt holes, the lower end of the porous glass plate is provided with the water outlet hole, and the porous glass plate is connected with the outer side wall of the test piece placing container through the bolts.
According to the permeable coefficient testing device for the permeable concrete standard test block, the rubber test piece sleeve is a hollow prismatic test piece sleeve.
According to the permeable coefficient testing device for the permeable concrete standard test block, the shape of the inner space of the test piece placing container is matched with the shape of the rubber test piece sleeve.
According to the device for testing the water permeability coefficient of the standard test block of the pervious concrete, the side wall of the test block placing container is provided with the test block inlet and outlet, the side vertical wall of the test block placing container adjacent to the test block inlet and outlet is provided with the sealing door, and the sealing door is in sealing connection with the side wall of the test block placing container and seals the test block inlet and outlet.
According to the permeable coefficient testing device for the permeable concrete standard test block, the sealing door comprises a rubber sealing layer positioned on the outer side and a glass plate positioned on the inner side, and the rubber sealing layer is fixedly connected with the glass plate; and the rubber sealing layer and the rubber layer are connected with the sealing groove through the convex sealing parts.
According to the permeable coefficient testing device for the permeable concrete standard test block, the cuffs used for hooping the sealing door at the inlet and outlet of the test piece are respectively sleeved at the upper end, the middle part and the lower end of the test piece placing container.
According to the permeable coefficient testing device for the permeable concrete standard test block, the water inlet constant temperature controller is used for heating water and displaying the temperature of the output water.
The technical scheme of the utility model following profitable technological effect has been obtained:
1. the utility model discloses a whether the reading on the flowmeter for the measurement of intaking on the inlet tube and the outlet pipe is unanimous for the measurement of water flowmeter and whether the temperature of intaking in temperature and the graduated flask is unanimous determines whether can carry out the coefficient of permeability test of the concrete that permeates water, can reduce the human error in the coefficient of permeability test process, improve the measured scientificity and the degree of accuracy of coefficient of permeability, provide more reliable scientific foundation for selecting coefficient of permeability and intensity assorted concrete formula for the researcher.
2. The electronic thermometer can accurately measure the water temperature, so that the test can accurately control the water temperature, and the influence of the temperature on the water permeability coefficient is eliminated.
3. The test piece inlet and outlet and the sealing door on the test piece placing container are convenient for the test piece to be placed in and taken out, so that the measurement test is more rapid and convenient, and the technical problems of heavy loading mode and difficult sealing in the prior art from bottom to top are solved.
4. The water inlet adopts the form that the foraminiferous hose winds measuring cylinder inner wall, makes constant temperature distilled water leave along the inner wall, reduces the influence of gravity to the surface of water when traditional device rivers to reach the effect that reduces reading error and test result error.
5. The bottom adopts the water outlet mode of the perforated glass plate, the perforated glass plate can be locked with the sealing door by bolts, the integrity of the instrument is increased, the instrument is more convenient to disassemble and assemble, and the test process is simpler and more convenient.
Drawings
FIG. 1 is a schematic structural view of the permeable coefficient testing device for a permeable concrete standard test block of the present invention;
FIG. 2 is a schematic structural view of a specimen container in the permeable concrete standard test block permeability coefficient testing device of the present invention;
FIG. 3 is a schematic structural view of a sealing door in the permeable concrete standard test block permeability coefficient testing device of the present invention;
fig. 4 is a schematic structural diagram (suitable for a cuboid-shaped or square-shaped test piece) of the rubber test piece sleeve of the permeable concrete standard test block permeability coefficient testing device of the present invention;
fig. 5 is another schematic structural diagram (suitable for cylindrical test piece) of the rubber test piece sleeve of the permeable concrete standard test block permeability coefficient testing device of the utility model.
FIG. 6 is a schematic structural view of a porous glass plate in the permeable concrete standard test block permeability coefficient testing device of the present invention
The reference numbers in the figures denote: 1-an overflow tank; 2-a measuring cylinder; 3-a test piece placing container; 4-overflow water container; 5-a support member; 6-water outlet pipe; 7-flow meter for water outlet measurement; 8-water inlet pipe; 9-a water stop valve; 10-a flow meter for water intake metering; 11-an overflow pipe; 12-rubber seal layer, 13-cuff; 14-rubber test piece sleeve; 15-test piece inlet and outlet; 16-a sealing door; 17-a thermometer; 18-test piece; 19-a glass plate; 20-a protruding seal; 21-sealing the groove; 22-a rubber layer; 23-water intake thermostatic controller; 24-screw hole.
Detailed Description
As shown in fig. 1 and 2, the utility model discloses concrete standard test block permeability coefficient testing arrangement permeates water, place container 3, overflow water containing container 4 and supporting member 5 including overflow tank 1, a measuring section of thick bamboo 2, test piece. The device comprises a test piece placing container 3, a measuring cylinder 2, a supporting member 5, a water outlet end of the test piece placing container 3, a water outlet end of the measuring cylinder 2, a water inlet end of the test piece placing container 3, a water outlet end of the measuring cylinder 2, a water outlet end of the water outlet pipe 6, a water outlet metering flowmeter 7 and a water outlet end of the water outlet pipe 6, wherein the measuring cylinder 2 is arranged right above the test piece placing container 3, the test piece placing container 3 is arranged right above the supporting member 5, the test piece placing container 3 and the supporting member 5 are respectively arranged in an overflow tank 1; an overflow pipe 11 which is communicated and connected with fluid inside the measuring cylinder 2 is arranged on the side wall of the measuring cylinder 2 with scales, and a water stop valve 9 is arranged on the overflow pipe 11; the water outlet end of the water inlet thermostatic controller 23 is in fluid conduction connection with the water inlet end of the water inlet pipe 8, and the water outlet end of the water inlet pipe 8 is in fluid conduction connection with the water inlet end of the measuring cylinder 2; a water stop valve 9 and a water inlet metering flowmeter 10 are arranged on the water inlet pipe 8; the supporting member 5 is a perforated glass plate; an electronic thermometer 17 is arranged in the measuring cylinder 2; a test piece sleeved with a rubber test piece sleeve 14 is placed in the test piece placing container 3, and the outer side wall of the rubber test piece sleeve 14 is in sealing contact with the inner wall of the test piece placing container 3; the measuring cylinder 2 is detachably connected with the test piece placing container 3. In this embodiment, the rubber test piece sleeve 14 is a hollow prism-shaped test piece sleeve 14, so that the requirements of testing concrete test pieces in different shapes can be met, the shape of the inner space of the test piece placing container 3 is matched with the shape of the rubber test piece sleeve 14, good sealing between the outer surface of the rubber test piece sleeve 14 and the inner wall of the test piece placing container 3 is facilitated, and the accuracy of a test result is improved; the water inlet thermostatic controller 23 is used for heating water and displaying the temperature of the output water.
When the permeable concrete standard part is close to the bottom of the overflow tank 1, part of water in the measuring cylinder 2 flows reversely through the permeable concrete standard part in the process of flowing into the overflow tank 1, so that resistance is formed on water flowing from the upper part of the permeable concrete standard part to the lower part of the permeable concrete standard part, the accuracy of measuring the permeability coefficient of the permeable concrete standard part is influenced, and the test piece placing container 3 is separated from the bottom of the overflow tank 1 by using the supporting member 5, so that the problems can be solved.
In order to measure the permeability coefficient of the permeable concrete standard component under different water pressures, in the embodiment, 3 overflow pipes 11 are arranged on the side wall of the measuring cylinder 2 along the axial direction of the measuring cylinder 2; meanwhile, in order to reduce the impact of the water flowing out of the water outlet end of the water inlet pipe 8 on the existing water in the measuring cylinder 2 when the water is injected into the measuring pipe, and further reduce the influence of the impact on the measurement of the water permeability coefficient of the pervious concrete standard component, in this embodiment, the water outlet end of the water inlet pipe 8 is arranged in the measuring cylinder 2, and the water flowing out of the water outlet end of the water inlet pipe 8 is in contact with the inner wall of the measuring cylinder 2, so that the inner wall of the measuring cylinder 2 can buffer the water flow injected into the measuring cylinder 2, the water injected into the measuring cylinder 2 is prevented from directly falling into the measuring cylinder 2 from the pipe orifice of the water outlet end of the water inlet pipe 8, and the impact of the water flowing out of the water outlet end of the water inlet pipe 8 on the existing water in.
In order to facilitate the installation of the perforated glass plate below the test piece placing container 3 and the assembly of the perforated glass plate with the test piece placing container 3, in this embodiment, four bolt holes are formed in the upper end of the perforated glass plate, a water outlet hole is formed in the lower end of the perforated glass plate, and the perforated glass plate is connected with the outer side wall of the test piece placing container 3 through bolts.
In order to facilitate the placement of the pervious concrete standard component with the measured permeability coefficient into the test piece placement container 3 without moving the measuring cylinder 2, in this embodiment, a test piece inlet and outlet 15 is provided on a side wall of the test piece placement container 3, a sealing door 16 is provided on a side vertical wall of the test piece placement container 3 adjacent to the test piece inlet and outlet 15, and the sealing door 16 is connected with the side wall of the test piece placement container 3 in a sealing manner and seals the test piece inlet and outlet 15. The sealing door 16 comprises a rubber sealing layer 12 positioned on the outer side and a glass plate 19 positioned on the inner side, and the rubber sealing layer 12 and the glass plate 19 are bonded and connected through an adhesive; the upper edge inner side surface, the left edge inner side surface and the right edge inner side surface of the rubber sealing layer 12 are respectively provided with a convex sealing part 20, the rubber layer 22 coated on the test piece placing container 3 is provided with a sealing groove 21, the rubber sealing layer 12 and the rubber layer 22 are connected with the sealing groove 21 through the convex sealing part 20, and the upper end, the middle part and the lower end of the test piece placing container 3 are respectively sleeved with a hoop 13 used for hooping the sealing door 16 at the test piece inlet and outlet 15. Because the sealing door 16 is fixedly connected with the rubber layer 22 through the outer rubber sealing layer 12, the sealing door 16 can be very conveniently opened, so that the test piece 18 sleeved with the rubber test piece sleeve 14 is placed in the test piece placing container 3, and when the sealing door 16 is closed, the convex sealing part 20 is forcibly pressed into the sealing groove 21 so as to be in interference fit with the sealing groove 21, so that the test piece inlet and outlet 15 is closed; the ferrule 13 is sleeved outside the test piece placing container 3, so that the sealing door 16 is tightly pressed on the test piece inlet and outlet 15, and the test piece inlet and outlet 15 is sealed.
As shown in fig. 1, when in use, the rubber test piece sleeve 14 is firstly sleeved on a test piece, and then the test piece is placed into the test piece placing container 3 through the test piece inlet and outlet 15, if a certain leakage gap exists locally between the test piece and the rubber test piece sleeve 14, epoxy resin can be used for sealing, then the test piece inlet and outlet 15 is sealed by the sealing door 16, then the upper end and the lower end of the test piece placing container 3 are respectively sleeved with one hoop 13, the sealing door 16 is tightly hooped on the side wall of the test piece placing container 3 by the hoop 13 positioned below, then the water stop valve 9 is opened to inject water into the measuring cylinder 2, and when water flows out from the water outlet pipe 6, the water inflow is adjusted by the flow meter 10 for water inflow metering and/or the overflow pipe 11. When the reading of the flowmeter 7 for water outlet measurement is consistent with the reading of the flowmeter 10 for water inlet measurement within T seconds, the measurement is started, the reading of the flowmeter 7 for water outlet measurement within T seconds is read to be the water flow Q, the water head difference H between the inside of the measuring cylinder 2 and the inside of the overflow tank 1 is read, the H is accurate to 1mm, the water temperature T is strictly controlled by the thermometer 17 in the test, and then the operation is repeated for 3 times, and the water permeability coefficient is calculated for 3 times by the following formula:
in the formula:
kt-water permeability coefficient at water temperature T ℃, mm/s;
the water volume, ml, of the pervious concrete flowing through within the time Q-t;
l-thickness of the test piece, mm;
h-head difference, mm;
a-the cross-sectional area of the test piece;
t-time, s.
When the reading of the water inlet measuring flowmeter 10 is compared with the reading of the water outlet measuring flowmeter 7, and when the reading of the water inlet measuring flowmeter and the reading of the water outlet measuring flowmeter are the same, the flow rate of the water in the measuring cylinder 2 leaking downwards through the test piece is the same as the flow rate of the water in the measuring cylinder 2 injected by the water inlet pipe 8; the reading of the electronic thermometer 17 is compared with the reading of the water inlet thermostatic controller, so that the heating power and the water outlet temperature of the water immersion thermostatic controller can be determined, the water permeability coefficient of the permeable concrete standard part can be measured at a specific temperature, and the influence of the temperature on the water permeability coefficient is eliminated; meanwhile, the artificial error caused by the artificial judgment of whether the water flow of the water outlet pipe 6 and the water flow of the overflow pipe 11 are stable is eliminated, and the accuracy of the water permeability coefficient measurement is improved.
It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications are possible which remain within the scope of the appended claims.
Claims (9)
1. The permeable coefficient testing device for the standard test block of the permeable concrete is characterized by comprising an overflow tank (1), a measuring cylinder (2), a test block placing container (3), an overflow water containing container (4) and a supporting member (5), wherein the measuring cylinder (2) is arranged right above the test block placing container (3), the water outlet end of the measuring cylinder (2) is in fluid conduction connection with the water inlet end of the test block placing container (3), the test block placing container (3) is arranged right above the supporting member (5), the test block placing container (3) and the supporting member (5) are respectively arranged in the overflow tank (1), the top of the upper end of the test block placing container (3) is positioned below the notch of the overflow tank (1), a water outlet pipe (6) is arranged on the side wall of the overflow tank (1), and a flowmeter (7) for water outlet metering is arranged on the water outlet pipe (6), the water outlet end of the water outlet pipe (6) is in fluid conduction connection with the water inlet end of the overflow water containing container (4); an overflow pipe (11) which is communicated and connected with fluid inside the measuring cylinder (2) is arranged on the side wall of the measuring cylinder (2) provided with scales, and a water stop valve (9) is arranged on the overflow pipe (11); the water outlet end of the water inlet thermostatic controller (23) is in fluid conduction connection with the water inlet end of the water inlet pipe (8), and the water outlet end of the water inlet pipe (8) is in fluid conduction connection with the water inlet end of the measuring cylinder (2); a water stop valve (9) and a water inlet metering flowmeter (10) are arranged on the water inlet pipe (8); the supporting member (5) is a perforated glass plate; an electronic thermometer (17) is arranged in the measuring cylinder (2); a test piece sleeved with a rubber test piece sleeve (14) is placed in the test piece placing container (3), and the outer side wall of the rubber test piece sleeve (14) is in sealing contact with the inner wall of the test piece placing container (3); the measuring cylinder (2) is detachably connected with the test piece placing container (3).
2. The permeable concrete standard test block permeability coefficient testing device of claim 1, wherein the side wall of the measuring cylinder (2) is provided with more than or equal to 2 overflow pipes (11) along the axial direction of the measuring cylinder (2); the water outlet end of the water inlet pipe (8) is arranged in the measuring cylinder (2), and water flowing out of the water outlet end of the water inlet pipe (8) is in contact with the inner wall of the measuring cylinder (2).
3. The permeable concrete standard test block permeability coefficient testing device of claim 2, wherein the upper end of the perforated glass plate is provided with four bolt holes, the lower end of the perforated glass plate is provided with a water outlet hole, and the perforated glass plate is connected with the outer side wall of the test block placing container (3) through bolts.
4. The permeable concrete standard test block permeability coefficient testing device of claim 3, wherein the rubber test piece sleeve (14) is a hollow prism-shaped test piece sleeve.
5. The permeable concrete standard test block permeability coefficient testing device of claim 4, wherein the shape of the inner space of the test piece placing container (3) is matched with the shape of the rubber test piece sleeve (14).
6. The permeable concrete standard test block permeability coefficient testing device according to any one of claims 1 to 5, characterized in that a test block inlet and outlet (15) is arranged on the side wall of the test block placing container (3), a sealing door (16) is arranged on the side vertical wall of the test block placing container (3) adjacent to the test block inlet and outlet (15), and the sealing door (16) is in sealing connection with the side wall of the test block placing container (3) and seals the test block inlet and outlet (15).
7. The permeable concrete standard test block permeability coefficient testing device of claim 6, wherein the sealing door (16) comprises a rubber sealing layer (12) at the outer side and a glass plate (19) at the inner side, and the rubber sealing layer (12) and the glass plate (19) are fixedly connected; the test piece placing container is characterized in that protruding sealing parts (20) are respectively arranged on the inner side surface of the upper edge, the inner side surface of the left edge and the inner side surface of the right edge of the rubber sealing layer (12), a rubber layer (22) coated on the test piece placing container (3) is provided with a sealing groove (21), and the rubber sealing layer (12) and the rubber layer (22) are connected with the sealing groove (21) through the protruding sealing parts (20).
8. The permeable concrete standard test block permeability coefficient testing device of claim 7, wherein the upper end, the middle part and the lower end of the test block placing container (3) are respectively sleeved with a hoop (13) for hooping the sealing door (16) at the test block inlet and outlet (15).
9. The permeable concrete standard test block water permeability coefficient testing device of claim 8, wherein the water inlet thermostatic controller (23) is used for heating water and displaying the temperature of the output water.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020021483.4U CN211718059U (en) | 2020-01-06 | 2020-01-06 | Permeable coefficient testing device for permeable concrete standard test block |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020021483.4U CN211718059U (en) | 2020-01-06 | 2020-01-06 | Permeable coefficient testing device for permeable concrete standard test block |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211718059U true CN211718059U (en) | 2020-10-20 |
Family
ID=72820633
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020021483.4U Expired - Fee Related CN211718059U (en) | 2020-01-06 | 2020-01-06 | Permeable coefficient testing device for permeable concrete standard test block |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211718059U (en) |
-
2020
- 2020-01-06 CN CN202020021483.4U patent/CN211718059U/en not_active Expired - Fee Related
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105588796B (en) | A kind of device of accurate quick measure soil permeability coefficient | |
| CN206756653U (en) | Determine head and varying head soil permeability coefficient measure combination unit | |
| CN208206964U (en) | Simulate high-pressure slip-casting device under buried stratum river channels | |
| CN204228377U (en) | A kind of multifunction experiment apparatus of hydrogeological parameter synthesis measuring | |
| CN108645998A (en) | A kind of test method causing karst collapse for simulated groundwater | |
| CN206223619U (en) | A kind of permeability coefficient of cement soil tester | |
| CN105651677A (en) | Geotechnical parameter and property tester capable of simultaneously testing specific yield and osmotic coefficient | |
| CN107917863A (en) | A kind of circle pervious concrete test block device for testing permeability coefficient and its measuring method | |
| CN208043608U (en) | A kind of novel water permeable concrete permeable coefficient testing device | |
| CN104655468A (en) | Sample preparation device and sample preparation method for sand-soil contact surface test sample as well as osmotic coefficient determination method | |
| CN107677585A (en) | The device for determining permeation coefficient and measuring method of a kind of seepy material | |
| CN103033459B (en) | Device for testing horizontal permeability of cement-soil deep mixing column indoors and test method | |
| CN203101231U (en) | Fast testing device for seepage coefficient of macroporous concrete | |
| CN211718059U (en) | Permeable coefficient testing device for permeable concrete standard test block | |
| CN110296930A (en) | A kind of device and test method of on-site measurement porous pavement infiltration coefficient | |
| CN109827886A (en) | The impervious experimental method of cement concrete joint sealing material | |
| CN209624312U (en) | Cement concrete joint sealing material water creep appearance | |
| CN210465213U (en) | Geotechnical test permeameter convenient to measure | |
| CN108801874A (en) | A kind of pervious concrete pervasion test device and its test method | |
| CN205404360U (en) | But ground parameter nature apparatus of simultaneous determination feedwater degree and osmotic coefficient | |
| CN208255022U (en) | Directly measure the experimental rig of three-dimensional infiltration coefficient under bury difference consolidation pressure | |
| CN208091877U (en) | A kind of pervious concrete pervasion test device | |
| CN114923833B (en) | High osmotic concrete osmotic coefficient's survey device | |
| CN208091868U (en) | The circulation experiment device of porosity, specific yield and infiltration coefficient can be measured simultaneously | |
| CN207231968U (en) | Concrete permeable factor detection device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20201020 Termination date: 20220106 |