CN207133164U - The test device of concrete permeable coefficient - Google Patents
The test device of concrete permeable coefficient Download PDFInfo
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- CN207133164U CN207133164U CN201621120766.4U CN201621120766U CN207133164U CN 207133164 U CN207133164 U CN 207133164U CN 201621120766 U CN201621120766 U CN 201621120766U CN 207133164 U CN207133164 U CN 207133164U
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Abstract
The utility model discloses the test device of concrete permeable coefficient, including tank, cushion block, indicate graduation mark and water-permeable pipe, plasticine and outlet pipe for accommodating concrete sample；Cushion block is on the bottom plate in tank；Water-permeable pipe is located in tank and on cushion block；The shape of plasticine and the inwall of water-permeable pipe are engaged, and are realized the gap sealing between concrete sample and permeable inside pipe wall；Outlet pipe connects tank.The utility model uses above structures and methods, and simple, easy making, easy to operate, calculating process is simple, can meet the testing requirement of permeability rate；Small volume, in light weight, the test for only needing people's can completion to test.Experimental provision manufacturing process is simple, and material requested is few, and experimentation is directly perceived.By being designed to certain size, using the formula after simplificationCoefficient of permeability can easily and efficiently be calculated.
Description
Technical field
It the utility model is related to civil engineering material technical field of measurement and test, and in particular to the test dress of concrete permeable coefficient
Put.
Background technology
Pervious concrete is the concrete for having continuous pore structure, has very strong water penetration compared to normal concrete,
The public places such as parking lot, pavement and park are widely used at present, it is smooth to efficiently solve road surface drainage, alleviates
Urban waterlogging, reduce " tropical island effect " in city, sqouynd absorption lowering noise, be the important materials for creating " sponge city ".Water coagulation soil exists
Coefficient of permeability this key index is determined during research and development, but lacks unified survey for the measure of concrete permeable coefficient at present
Trial assembly is put, each scientific research institution's self manufacture.Most of concrete permeable coefficient testing device construction is complicated, it is cumbersome to make, and calculates
It is related to that the parameter of measure is more, and test result does not possess comparability, very big inconvenience is generated to pervious concrete research.
Utility model content
The purpose of this utility model is the test device for disclosing concrete permeable coefficient, and it is saturating to solve existing concrete
The problem of water coefficient test device construction complexity, more parameter that making is cumbersome, calculating is related to measure.
To reach above-mentioned purpose, the utility model adopts the following technical scheme that：
The test device of concrete permeable coefficient, including tank, cushion block, indicate graduation mark and for accommodating concrete sample
Water-permeable pipe, plasticine and outlet pipe；Cushion block is on the bottom plate in tank；Water-permeable pipe is located in tank and on cushion block；
The shape of plasticine and the inwall of water-permeable pipe are engaged, and are realized the gap sealing between concrete sample and permeable inside pipe wall；
Outlet pipe connects tank.
Further, the height h3 of the cushion block is n × 20mm；The graduation mark includes the first graduation mark and the second scale
Line, the first graduation mark are n × 200mm away from the high h1 of the bottom plate, and the second graduation mark 32 is n × 100mm away from 11 high h2 of bottom plate, permeable
Volume between the first graduation mark and the second graduation mark of pipe 3 is n × 0.001m3, at the outlet pipe and the water-tank hole
Height h4 away from bottom plate is n × 120mm；N is the natural number more than 0.
Further, the cross section of the water-permeable pipe is that square or interior diameter of the inner edge length more than or equal to 102mm are more than
Or the circle equal to 102mm.
Further, the tank is bottom lock and open-topped structure, is made up of PVC material.
Further, the height of the tank 1 is 300mm, and the sidewall thickness and bottom thickness of tank are all 5mm, and floor space is
300mm×300mm。
Further, including 4 cushion blocks, 4 cushion blocks around the water-permeable pipe axis annular spread, for supporting
Water pipe.
Further, the cushion block is cube structure, and the length of cushion block is 20mm, width 20mm.
Further, penetrating above and below the water-permeable pipe, the graduation mark is marked in the inwall of water-permeable pipe, and water-permeable pipe is by PVC material
It is made.
Further, the height of the water-permeable pipe is 400mm, and the wall thickness of water-permeable pipe is 5mm.
Further, the bore of the outlet pipe is 20mm, and the wall thickness of outlet pipe is 2mm, and outlet pipe is included described in connection
The tilting section of the flat segments of tank and connection flat segments, the length of flat segments are 100mm, and the angle X of tilting section and horizontal plane is
30 degree, the length L2 of tilting section is 300mm, and tilting section 52 tilts to left down.The other structures of the present embodiment are referring to prior art.
Compared with prior art, the beneficial effects of the utility model：
The utility model uses above structure, and simple, easy making, easy to operate, calculating process is simple, can meet permeability rate
Testing requirement；Small volume, in light weight, the test for only needing people's can completion to test.Experimental provision manufacturing process is simple,
Material requested is few, and experimentation is directly perceived.By being designed to certain size, using the formula after simplificationCan be square
Just coefficient of permeability, is efficiently calculated.
Brief description of the drawings
, below will be to embodiment in order to illustrate more clearly of the utility model embodiment or technical scheme of the prior art
Or the required accompanying drawing used is briefly described in description of the prior art, it should be apparent that, drawings in the following description are only
It is some embodiments of the utility model, for those of ordinary skill in the art, before creative labor is not paid
Put, other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is the test device of concrete permeable coefficient described in the utility model, the structural representation of embodiment.
In figure, 1- tanks；11- bottom plates；2- cushion blocks；3- water-permeable pipes；The graduation marks of 31- first；The graduation marks of 32- second；4- rubbers
Skin mud；5- outlet pipes；51- flat segments；52- tilting sections；6- concrete samples.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the embodiment of the utility model is carried out
Clearly and completely describing, it is clear that described embodiment is only the utility model part of the embodiment, rather than whole
Embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are not under the premise of creative work is made
The every other embodiment obtained, belong to the scope of the utility model protection.
The test device of embodiment concrete permeable coefficient as shown in Figure 1, including tank 1, cushion block 2, indicate graduation mark and
For accommodating the water-permeable pipe 3, plasticine 4 and outlet pipe 5 of concrete sample 6.Cushion block 2 is on the bottom plate 11 in tank 1.It is permeable
Pipe 3 is located in tank 1 and on cushion block 2.The shape of plasticine 4 and the inwall of water-permeable pipe 3 are engaged, and are realized and are tried concrete
Gap sealing between part 6 and the inwall of water-permeable pipe 3, makes gap water-tight.Outlet pipe 5 connects tank 1.More than the present embodiment uses
Structure, it is simple in construction, easy to make, easily operated, calculate it is easy and accurate.
Tank 1 is bottom lock and open-topped structure, is made up of PVC material, and the height of tank 1 is 300mm, tank
Sidewall thickness and bottom thickness be all 5mm, floor space is 300mm × 300mm.
Cushion block 2 is cube structure, and the length of cushion block 2 is 20mm, width 20mm, height h3 are 20mm.The present embodiment
Axis annular spread including 4 cushion blocks, 2,4 cushion blocks 2 around water-permeable pipe 3, for supporting water-permeable pipe 3.
Water-permeable pipe is penetrating about 3, and graduation mark is marked in the inwall of water-permeable pipe, including the first graduation mark 31 and the second graduation mark
32, the first graduation mark 31 is 200mm away from 11 high h1 of bottom plate, and the second graduation mark 32 is 100mm away from 11 high h2 of bottom plate, water-permeable pipe 3
Volume between first graduation mark 31 and the second graduation mark 32 meets 0.001m3The measurement of water.Water-permeable pipe 3 is made up of PVC material.
The height of water-permeable pipe 3 is 400mm, and the wall thickness of water-permeable pipe 3 is 5mm.The cross section of water-permeable pipe can be a length of 102mm of inner edge just
Square or interior diameter is 102mm circle, to adapt to concrete sample 6.
Outlet pipe 5 and height h4 of the interface of tank 1 away from bottom plate 11 is 120mm.The bore of outlet pipe 5 is 20mm, is gone out
The wall thickness of water pipe 5 is 2mm.Outlet pipe 5 includes the flat segments 51 of connection water channel 1 and the tilting section 52 of connection flat segments 51, straight
The length of section 51 be 100mm, and the angle X of tilting section 52 and horizontal plane is 30 degree, and the length L2 of tilting section 52 is 300mm, inclination
Section 52 tilts to left down.
As the further explanation to the present embodiment, the present embodiment can carry out year-on-year according to the size of concrete sample 6
Example scaling, to adapt to the test of the concrete sample of different dimensions, the size of the concrete sample 6 coordinated with the present embodiment is
Long 100mm × wide 100mm × high 100mm square.When the length, width and height of concrete sample 6 amplify n times respectively, the height of cushion block
H3, the first graduation mark are spent away from the high h1 of bottom plate, the second graduation mark the first graduation mark and the second graduation mark away from the high h2 of bottom plate, water-permeable pipe
Between volume be, the height h4 away from bottom plate also amplifies n times respectively at outlet pipe and water-tank hole, n is natural number more than 0.
The size of concrete sample 6 can be 100mm × 100mm × 100mm, 150mm × 150mm × 150mm, 200mm × 200mm ×
200mm etc..
The other structures of the present embodiment are referring to prior art.
As the further explanation to the present embodiment, illustrate the permeable system that concrete sample is calculated using the present embodiment now
Several method of testings, including：
S1, concrete sample 6 is fitted into water-permeable pipe, concrete sample 6 is the square that the length of side is 100mm, concrete
The lower surface of test specimen 6 is concordant with the end face of water-permeable pipe bottom, and the upper surface of concrete sample 6 and the second graduation mark 32 are concordant, will
Gap plasticine 4 between concrete sample 6 and permeable inside pipe wall fills up, and makes gap water-tight.
S2, add water into tank 1, water level is reached outlet pipe 5 with the downside of the interface of tank 1 (i.e. if water level rises again
Height, water flow out from outlet pipe 5).During concrete operations, water can be injected into tank 1, until water overflows from outlet pipe 5, stop note
Water, standing certain time (such as 30s) treat that the water surface in tank 1 is stable.
After water surface stabilization in S3, tank 1, then it is filled at the first graduation mark 31 and (injects into water-permeable pipe 3
0.001m3Water), the distance of the water surface is head difference H in the water surface and tank 1 in water-permeable pipe 3, and head difference H is in embodiment two
100mm；Start timing, when the water surface drops to the upper surface of concrete sample 6 in water-permeable pipe 3, stop timing, detect permeable
The complete time difference △ t of current in pipe 3, passes through formulaCalculate coefficient of permeability K, in formula, K- coefficient of permeability mm/s,
△ t- time differences s.
As the further explanation to method of testing, illustrate its principle now：FormulaCalculated according to coefficient of permeability
FormulaDerive.
In formula, K- coefficients of permeability mm/s；
Q- passes through the water of concrete sample 6, unit mm3；The He of the first graduation mark 31 of permeable inside pipe wall in embodiment two
Volume between second graduation mark 32 meets 0.001m3The measurement of water, therefore Q=0.001m3=100mm × 100mm × 100mm.
The thickness of D- concrete samples 6, unit mm；In embodiment two, concrete sample is the pros that the length of side is 100mm
Body, D=100mm.
The cross-sectional area of A- concrete samples 6, unit mm2；In embodiment two, concrete sample is that the length of side is 100mm
Square when, therefore A=100mm × 100mm.
H- head differences, for the distance of the water surface in the water surface and tank 1 in water-permeable pipe 3, unit mm；Due to outlet pipe 5 and water
The interface of groove 1 is 120mm apart from the distance of tank inner bottom plating 11, and the height of cushion block 2 is 20mm, and the second graduation mark 32 is apart from saturating
The bottom 100mm of water pipe, therefore the water surface and the second graduation mark are concordant in tank, H=h1-h2=200mm-100mm=100mm.
△ t- time differences, unit s.
It can be drawn by the fixed dimension of the present embodimentFinally draw simplification
Coefficient of permeability formula afterwardsSo as to calculate coefficient of permeability K.100 cubic millimeters of water is injected to water-permeable pipe, then
The complete time △ t of current in water-permeable pipe is determined, passes through the coefficient of permeability formula after simplificationCalculate coefficient of permeability.
The utility model is not limited to above-mentioned embodiment, if various changes or modifications to the utility model do not take off
From spirit and scope of the present utility model, if these changes and modification belong to the claims and equivalents of the utility model
Within the scope of, then the utility model is also intended to comprising these changes and modification.
Claims (8)
1. the test device of concrete permeable coefficient, it is characterized in that：Including tank, cushion block, indicate graduation mark and for accommodate it is mixed
Coagulate water-permeable pipe, plasticine and the outlet pipe of native test specimen；Cushion block is on the bottom plate in tank；Water-permeable pipe is located in tank and is located at
On cushion block；The shape of plasticine and the inwall of water-permeable pipe are engaged, and are realized the seam between concrete sample and permeable inside pipe wall
Gap seals；Outlet pipe connects tank.
2. the test device of concrete permeable coefficient according to claim 1, it is characterised in that：The height h3 of the cushion block is
n×20mm；The graduation mark includes the first graduation mark and the second graduation mark, the first graduation mark away from the high h1 of the bottom plate be n ×
200mm, the second graduation mark 32 is n × 100mm away from 11 high h2 of bottom plate, between the first graduation mark and the second graduation mark of water-permeable pipe 3
Volume be n × 0.001m3, the outlet pipe is n × 120mm with the height h4 away from bottom plate at the water-tank hole；N be more than
0 natural number.
3. the test device of concrete permeable coefficient according to claim 2, it is characterised in that：The cross section of the water-permeable pipe
It is the circle that square or interior diameter of the inner edge length more than or equal to 102mm are more than or equal to 102mm.
4. according to the test device of concrete permeable coefficient described in claims 1 to 3 any one, it is characterised in that：The water
Groove is bottom lock and open-topped structure, is made up of PVC material.
5. according to the test device of concrete permeable coefficient described in claims 1 to 3 any one, it is characterised in that：The water
The height of groove is 300mm, and the sidewall thickness and bottom thickness of tank are all 5mm, and floor space is 300mm × 300mm.
6. according to the test device of concrete permeable coefficient described in any one of claim 1 or 3, it is characterised in that：The pad
Block is cube structure, and the length of cushion block is 20mm, width 20mm.
7. the test device of concrete permeable coefficient according to claim 2, it is characterised in that：The water-permeable pipe is logical up and down
Thoroughly, the graduation mark is marked in the inwall of water-permeable pipe, and water-permeable pipe is made up of PVC material；The height of water-permeable pipe is 400mm, water-permeable pipe
Wall thickness be 5mm.
8. the test device of concrete permeable coefficient according to claim 6, it is characterised in that：The bore of the outlet pipe
For 20mm, the wall thickness of outlet pipe is 2mm, and outlet pipe includes the tilting section for connecting the flat segments of the tank and connection flat segments,
The length of flat segments is 100mm, and the angle X of tilting section and horizontal plane is 30 degree, and the length L2 of tilting section is 300mm, tilting section
52 tilt to left down.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621120766.4U CN207133164U (en) | 2016-10-13 | 2016-10-13 | The test device of concrete permeable coefficient |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621120766.4U CN207133164U (en) | 2016-10-13 | 2016-10-13 | The test device of concrete permeable coefficient |
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| CN207133164U true CN207133164U (en) | 2018-03-23 |
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ID=61629875
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106644876A (en) * | 2016-10-13 | 2017-05-10 | 广州大学 | Test device and test method of water permeability coefficient of concrete |
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2016
- 2016-10-13 CN CN201621120766.4U patent/CN207133164U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106644876A (en) * | 2016-10-13 | 2017-05-10 | 广州大学 | Test device and test method of water permeability coefficient of concrete |
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