CN208187930U - The pervious concrete pervasion test device of level pressure gas-flow closure - Google Patents
The pervious concrete pervasion test device of level pressure gas-flow closure Download PDFInfo
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- CN208187930U CN208187930U CN201820726876.8U CN201820726876U CN208187930U CN 208187930 U CN208187930 U CN 208187930U CN 201820726876 U CN201820726876 U CN 201820726876U CN 208187930 U CN208187930 U CN 208187930U
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- cabinet
- sink
- level pressure
- pervious concrete
- pressure gas
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Abstract
The utility model relates to it is a kind of can level pressure gas-flow closure pervious concrete pervasion test device, device includes sink, and the one side wall of the sink is provided with lower part gap, installs lower part overflow pipe at the lower part gap, it is fixedly installed with water tank in the sink, top is to being connected to tap；The structure of water tank are as follows: be made up of the upper box body, middle part cabinet and lower part box that are from top to bottom fixedly connected sequentially；The side of upper box body is provided with top overflow pipe；The top of middle part cabinet is fixed with permeable cover board, bottom end is fixed with bearing plate, concrete test block is placed between permeable cover board and bearing plate, the surrounding of middle part cabinet wall is provided with inflating rubber bed course, seamless between inflating rubber bed course and concrete test block to be bonded；The lower part box is located in sink, and the communication port communicated with sink is provided on the two sidewalls of lower part box；The side wall that inflating rubber bed course can avoid concrete test block in test leaks the influence to experimental data.
Description
Technical field
The utility model relates to civil engineering material the field of test technology, the permeable of especially a kind of level pressure gas-flow closure is mixed
Solidifying soil pervasion test device.
Background technique
Permeable concrete is a kind of nothing made of the materials such as coarse aggregate, cement, water, additive with continuous hole
Sand concrete, the green application value with ecological, environmental protective.With the fast development and sponge city concept of urban road
The drawbacks of proposition, waterproof pavement, is more and more obvious, and each field is increasing to the demand of permeable concrete, especially in work
The application of journey construction field is more and more wider.
For pervious concrete as novel ecological concrete, water permeability is most important index, is needed to permeable coagulation
The infiltration coefficient of soil is tested, and is evaluated with the water permeability to concrete.
The concrete filtration coefficient test device spininess normal concrete closeer for hole in the prior art, for infiltration
Property biggish pervious concrete and be not suitable for, since pervious concrete surface is distributed a large amount of holes, hole is formed through open flows
Diameter is changed the direction of a stream of water to flow out from side wall, causes experimental data inaccurate.
Utility model content
The applicant provides a kind of pervious concrete of level pressure gas-flow closure for the disadvantage in above-mentioned existing production technology
Pervasion test device obtains accurately experiment so that the side wall of concrete test block effectively be avoided to leak the influence to experimental data
Data.
Technical solution used by the utility model is as follows:
A kind of pervious concrete pervasion test device of level pressure gas-flow closure, including sink, the one side wall of the sink are opened
There is lower part gap, lower part overflow pipe is installed at the lower part gap, water tank, top docking are fixedly installed in the sink
There is tap；
The structure of the water tank are as follows: pass through the upper box body, middle part cabinet and lower tank being from top to bottom fixedly connected sequentially
Body composition；
Wherein, the side of upper box body is provided with top overflow pipe；
Wherein, the top of middle part cabinet is fixed with permeable cover board, and bottom end is fixed with bearing plate, in permeable cover board and bearing plate
Between be placed with concrete test block, the surrounding of middle part cabinet wall is provided with inflating rubber bed course, inflating rubber bed course and coagulation
Seamless fitting between native test block；
Wherein, the lower part box is located in sink, and the communication port communicated with sink is provided on the two sidewalls of lower part box.
Its further technical solution is:
The side of the middle part cabinet is equipped with constant-pressure inflating device connector, and the constant-pressure inflating device connector will be external
Constant-pressure inflating device be attached with inflating rubber bed course, constant-pressure inflating device be hydraulic servo device with manograph or
Gas booster pump, the pressure limit of constant-pressure inflating device are 50-500kpa.
The wall thickness of the upper box body, middle part cabinet and lower part box is 5-10mm, height respectively 550mm,
250mm and 300mm, cross section are identical square annular, inner edge a length of 150mm or 200m of square annular.
It is all made of and is bolted between the upper box body and middle part cabinet, middle part cabinet and lower part box；Each cabinet is adopted
With transparent organic glass material.
The inflating rubber bed course is Nian Jie with the inner wall of the middle part cabinet.
The bearing plate is perforated steel plate.
Beaker with a scale is provided with below the lower part overflow pipe.
The beneficial effects of the utility model are as follows:
The utility model is compact-sized, reasonable, easy to operate, and the level pressure inflating rubber bed course of the utility model and outside are fixed
Air charging system connection is pressed, setting is bonded with pervious concrete test block tight, and pressure can be controlled by manograph, is avoided that survey
Avoiding pressurizeing to concrete sample while water flow side leakage during examination excessively causes test specimen to damage；Simultaneously by adjusting inflation
Amount, can test various sizes of pervious concrete test block, improve the practicability of experimental provision, optimize experimentation,
Improve the accuracy of experimental data.
The upper box body and middle part cabinet of the utility model water tank, are blocked between middle part cabinet and lower part box by bolt
It cuts, ease of assembly and disassembly, easy to carry and cleaning.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model.
Wherein: 1, tap；2, water tank；5, top overflow pipe；7, permeable cover board；8, constant-pressure inflating device connector；9,
Concrete test block；10, bearing plate；11, inflating rubber bed course；12, sink；13, communication port；14, lower part overflow pipe.
Specific embodiment
With reference to the accompanying drawing, illustrate specific embodiment of the present utility model.
As shown in Figure 1, the pervious concrete pervasion test device of the level pressure gas-flow closure of the present embodiment, including sink 12,
The one side wall of sink 12 is provided with lower part gap, installs lower part overflow pipe 14, the lower section of lower part overflow pipe 14 at the gap of lower part
It is provided with beaker with a scale, is fixedly installed with water tank 2 in sink 12, top is to being connected to tap 1；
The structure of water tank 2 are as follows: pass through the upper box body, middle part cabinet and lower part box group being from top to bottom fixedly connected sequentially
At；
Wherein, the side of upper box body is provided with top overflow pipe 5；
Wherein, the top of middle part cabinet is fixed with permeable cover board 7, and bottom end is fixed with bearing plate 10, permeable cover board 7 with hold
Concrete test block 9 is placed between weight plate 10, the surrounding of middle part cabinet wall is bonded with inflating rubber bed course 11, middle part cabinet
Side is equipped with constant-pressure inflating device connector 8, and constant-pressure inflating device connector 8 is by external constant-pressure inflating device and inflating rubber
Bed course 11 is attached, and inflating rubber bed course 11 expands after inflating, inflating rubber bed course 11 and different size concrete test blocks 9 it
Between realize seamless fitting, constant-pressure inflating device is hydraulic servo device or gas booster pump with manograph, level pressure inflation
The pressure limit of device is 50-500kpa；
Wherein, lower part box is located in sink 12, and the communication port communicated with sink 12 is provided on the two sidewalls of lower part box
13。
The wall thickness of upper box body, middle part cabinet and lower part box is 5-10mm, height be respectively 550mm, 250mm and
300mm, cross section are identical square annular, inner edge a length of 150mm or 200m of square annular.
It is all made of and is bolted between upper box body and middle part cabinet, middle part cabinet and lower part box；Each cabinet is using saturating
Bright organic glass material；Bearing plate 10 is perforated steel plate.
Embodiment one:
The test method of the pervious concrete pervasion test device of the level pressure gas-flow closure of the present embodiment, including walk as follows
It is rapid:
Step 1: 150mm × 150mm with age × 150mm cube concrete test specimen 9 is taken out, surface is dried
Vaseline or butter are smeared in side afterwards, and wraps up its side wall with plastic film；
Step 2: the concrete test block 9 for completing first step is mounted in the inflating rubber bed course 11 of middle part cabinet, and
Bearing plate 10 is installed in its bottom；
Step 3: fixing permeable cover board 7 above concrete test block 9, pass through pressure air charging system with constant-pressure inflating device
Connector 8 is inflated inflating rubber bed course 11, until constant pressure arrangement shows that pressure is 50kPa；
Step 4: by being fixed between upper box body and middle part cabinet, middle part cabinet and lower part box with bolt；
Step 5: opening tap 1, start slowly water filling, until water flow fills entire water tank 2, and top from bottom to top
Overflow pipe 5, lower part overflow pipe 14 start to stablize overflow；
Step 6: standing several minutes, start to test after waterflow stabilization and bubble empty；
Step 7: opening stopwatch, while time 30s, seepage flow water V are picked up at the overflow port of lower part with beaker, calculate single
The volume flow Q of water in the time of position, with the centre distance of ruler measurement top overflow pipe 5, lower part overflow pipe 14, i.e. head loss
Δh；Test 3 times is repeated, its average value is taken；
Infiltration coefficient is obtained step 8: calculate to above-mentioned each parameter.
Embodiment two:
The test method of the pervious concrete pervasion test device of the level pressure gas-flow closure of the present embodiment, including walk as follows
It is rapid:
Step 1: 100mm × 100mm with age × 150mm cube concrete test specimen 9 is taken out, surface is dried
Vaseline or butter are smeared in side afterwards, and wraps up its side wall with plastic film；
Step 2: the concrete test block 9 for completing first step is mounted in the inflating rubber bed course 11 of middle part cabinet, and
Bearing plate 10 is installed in its bottom；
Step 3: fixing permeable cover board 7 above concrete test block 9, pass through pressure air charging system with constant-pressure inflating device
Connector 8 is inflated inflating rubber bed course 11, until constant pressure arrangement shows that pressure is 100kPa；
Step 4: by being fixed between upper box body and middle part cabinet, middle part cabinet and lower part box with bolt；
Step 5: opening tap 1, start slowly water filling, until water flow fills entire water tank 2, and top from bottom to top
Overflow pipe 5, lower part overflow pipe 14 start to stablize overflow；
Step 6: standing several minutes, start to test after waterflow stabilization and bubble empty；
Step 7: opening stopwatch, while time 30s, seepage flow water V are picked up at the overflow port of lower part with beaker, calculate single
The volume flow Q of water in the time of position, with the centre distance of ruler measurement top overflow pipe 5, lower part overflow pipe 14, i.e. head loss
Δh；Test 3 times is repeated, its average value is taken；
Infiltration coefficient is obtained step 8: calculate to above-mentioned each parameter.
Embodiment three:
The test method of the pervious concrete pervasion test device of the level pressure gas-flow closure of the present embodiment, including walk as follows
It is rapid:
Step 1: the cube concrete test specimen of 200mm × 200mm with age × 150 9 is taken out, after drying surface
Vaseline or butter are smeared in side, and wraps up its side wall with plastic film；
Step 2: the concrete test block 9 for completing first step is mounted in the inflating rubber bed course 11 of middle part cabinet, and
Bearing plate 10 is installed in its bottom；
Step 3: fixing permeable cover board 7 above concrete test block 9, pass through pressure air charging system with constant-pressure inflating device
Connector 8 is inflated inflating rubber bed course 11, until constant pressure arrangement shows that pressure is 100kPa；
Step 4: by being fixed between upper box body and middle part cabinet, middle part cabinet and lower part box with bolt；
Step 5: opening tap 1, start slowly water filling, until water flow fills entire water tank 2, and top from bottom to top
Overflow pipe 5, lower part overflow pipe 14 start to stablize overflow；
Step 6: standing several minutes, start to test after waterflow stabilization and bubble empty；
Step 7: opening stopwatch, while time 30s, seepage flow water V are picked up at the overflow port of lower part with beaker, calculate single
The volume flow Q of water in the time of position, with the centre distance of ruler measurement top overflow pipe 5, lower part overflow pipe 14, i.e. head loss
Δh；Test 3 times is repeated, its average value is taken；
Infiltration coefficient is obtained step 8: calculate to above-mentioned each parameter.
In permeability test, infiltration water flow is divided into laminar flow and turbulent two kinds of fundamental types, the only slower laminar region of flow velocity,
Just meet Darcy law applicable elements, and water table gradient is smaller in pervious concrete permeability test, flow velocity is also small, so water
Darcy law is obeyed in flowing, its calculation formula is:
V=ki (1)
In formula: v is percolation flow velocity；K is infiltration coefficient；I=Δ h/L is water table gradient, and wherein Δ h is head loss, and L is
Piece lengths, head loss Δ h are the difference in height of two gap horizontal tubes.
The volume flow of water is Q in unit time, and the basal area of concrete test block is A, then flow velocity are as follows:
V=Q/A (2)
It can be obtained by formula (1) and formula (2):
K=Q/Ai (3)
By the test for the completion pervious concrete penetration testing that the above method can be convenient, concrete test block is effectively avoided
Side wall leak influence to experimental data, test result is accurate.
Head described in the utility model is: with the mechanical energy for the unit mass liquid that liquid-column height indicates, arbitrary cross-section
Locate the energy of Unit Weight water, is equal to than energy (energy of unit mass water) divided by acceleration of gravity.
Above description is the explanation to the utility model, is not the restriction to utility model, defined by the utility model
Range is within the protection scope of the utility model referring to claim, can make any type of modification.
Claims (7)
1. a kind of pervious concrete pervasion test device of level pressure gas-flow closure, it is characterised in that: including sink (12), the water
The one side wall of slot (12) is provided with lower part gap, installs lower part overflow pipe (14) at the lower part gap, the sink (12)
It is inside fixedly installed with water tank (2), top is to being connected to tap (1)；
The structure of the water tank (2) are as follows: pass through the upper box body, middle part cabinet and lower part box being from top to bottom fixedly connected sequentially
Composition；
Wherein, the side of upper box body is provided with top overflow pipe (5)；
Wherein, the top of middle part cabinet is fixed with permeable cover board (7), and bottom end is fixed with bearing plate (10), permeable cover board (7) with
It is placed between bearing plate (10) concrete test block (9), the surrounding of middle part cabinet wall is provided with inflating rubber bed course (11), fills
It is seamless between gas rubber spacer (11) and concrete test block (9) to be bonded；
Wherein, the lower part box is located in sink (12), and the company communicated with sink (12) is provided on the two sidewalls of lower part box
Port (13).
2. the pervious concrete pervasion test device of level pressure gas-flow closure as described in claim 1, it is characterised in that: in described
The side of portion's cabinet is equipped with constant-pressure inflating device connector (8), and the constant-pressure inflating device connector (8) fills external level pressure
Device of air is attached with inflating rubber bed course (11), and constant-pressure inflating device is hydraulic servo device or gas with manograph
Booster pump, the pressure limit of constant-pressure inflating device are 50-500kpa.
3. the pervious concrete pervasion test device of level pressure gas-flow closure as described in claim 1, it is characterised in that: on described
The wall thickness of portion's cabinet, middle part cabinet and lower part box is 5-10mm, and height is respectively 550mm, 250mm and 300mm, cross
Section is identical square annular, inner edge a length of 150mm or 200m of square annular.
4. the pervious concrete pervasion test device of level pressure gas-flow closure as described in claim 1, it is characterised in that: on described
It is all made of and is bolted between portion's cabinet and middle part cabinet, middle part cabinet and lower part box；Each cabinet uses transparent organic glass
Material.
5. the pervious concrete pervasion test device of level pressure gas-flow closure as described in claim 1, it is characterised in that: described to fill
Gas rubber spacer (11) is Nian Jie with the inner wall of the middle part cabinet.
6. the pervious concrete pervasion test device of level pressure gas-flow closure as described in claim 1, it is characterised in that: described to hold
Weight plate (10) is perforated steel plate.
7. the pervious concrete pervasion test device of level pressure gas-flow closure as described in claim 1, it is characterised in that: under described
Portion's overflow pipe is provided with beaker with a scale below (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820726876.8U CN208187930U (en) | 2018-05-15 | 2018-05-15 | The pervious concrete pervasion test device of level pressure gas-flow closure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820726876.8U CN208187930U (en) | 2018-05-15 | 2018-05-15 | The pervious concrete pervasion test device of level pressure gas-flow closure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208187930U true CN208187930U (en) | 2018-12-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820726876.8U Expired - Fee Related CN208187930U (en) | 2018-05-15 | 2018-05-15 | The pervious concrete pervasion test device of level pressure gas-flow closure |
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| CN (1) | CN208187930U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108507929A (en) * | 2018-05-15 | 2018-09-07 | 江南大学 | The pervious concrete pervasion test device and its test method of level pressure gas-flow closure |
-
2018
- 2018-05-15 CN CN201820726876.8U patent/CN208187930U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108507929A (en) * | 2018-05-15 | 2018-09-07 | 江南大学 | The pervious concrete pervasion test device and its test method of level pressure gas-flow closure |
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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: 20181204 Termination date: 20200515 |