CN107643243A - The measure device and method of pervious concrete porosity distribution - Google Patents
The measure device and method of pervious concrete porosity distribution Download PDFInfo
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- CN107643243A CN107643243A CN201711042374.XA CN201711042374A CN107643243A CN 107643243 A CN107643243 A CN 107643243A CN 201711042374 A CN201711042374 A CN 201711042374A CN 107643243 A CN107643243 A CN 107643243A
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- stop screw
- vernier scale
- pervious concrete
- porosity
- measure device
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/60—Planning or developing urban green infrastructure
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Abstract
It is vertically-mounted on the base to have support shaft the invention discloses the measure device and method of pervious concrete porosity distribution, arrangement for adjusting height is installed on the support shaft, measurement apparatus is installed in the height regulation adjusting means.The arrangement for adjusting height includes vernier scale, and the vernier scale is slidably installed on the blade of top, and micromatic setting is provided with above vernier scale, is fixed with the side wall of vernier scale and hangs thing pawl.The measurement apparatus includes carrying apparatus, graduated cylinder and seeping container.This device uses electronic digital display and micromatic setting, the position of the accurate Control Assay of energy, the water discharged by determining a certain thickness sample skeleton both can obtain the ensemble average porosity of pervious concrete, the certain thickness porosity in optional position is can obtain again, and the porosity distribution of pervious concrete is can obtain with a certain thickness sequentially determining porosity.
Description
Technical field
The invention belongs to the technical field of measurement and test of porosity of porous medium, more particularly to a kind of pervious concrete porosity point
The measure device and method of cloth.
Background technology
The multi-pore structure of pervious concrete causes road surface to have good water permeability, and rainwater can quickly permeate the ground,
So as to effectively reduce or eliminate the flood of urban storm initiation, this sends out in being built in " the sponge city " that China is implementing
Wave important function.In order to be more nearly engineering reality, pervious concrete sample shaping when more using hydrostatic profile or vibration into
The modes such as type, porosity distribution and uneven after shaping, particularly on compacting direction, such as using the permeable of hydrostatic profile mode
The big phenomenon of the small bottom porosity of upper hole gap rate often occurs along compacting direction in concrete sample.
The property such as the intensity of pervious concrete and infiltration coefficient is all closely related with the porosity distribution of sample, such as permeable mixed
The infiltration coefficient for coagulating soil is often depending on the minimum controlling sections of area porosity, in addition, the porosity distribution of pervious concrete
Also its laws for plugging is influenceed, therefore, measure pervious concrete porosity distribution is significant to research pervious concrete.And have
The device and method of measure pervious concrete mostly mass method or vacuum sealing method based on buoyancy, and the hole of these methods measure
Gap rate is the mean porosities of whole sample, and is difficult to the measure of porosity distribution.
The content of the invention
The technical problems to be solved by the invention are to provide the measure device and method of pervious concrete porosity distribution, this
Device uses electronic digital display and micromatic setting, the position of the accurate Control Assay of energy, is discharged by determining a certain thickness sample skeleton
Water both can obtain the ensemble average porosity of pervious concrete, can obtain the certain thickness porosity in optional position again, and
The porosity distribution of pervious concrete is can obtain with a certain thickness sequentially determining porosity.
In order to solve the above-mentioned technical problem, the present invention proposes following technical scheme：The survey of pervious concrete porosity distribution
Determine device, it includes base, vertically-mounted on the base to have support shaft, and arrangement for adjusting height is provided with the support shaft,
Measurement apparatus is installed in the height regulation adjusting means.
The support shaft includes lower pole, middle part stop block is set with the lower pole, on the stop block of middle part
Part is top blade, and top stop block is fixed with the top of lower pole.
The arrangement for adjusting height includes vernier scale, and the vernier scale is slidably installed on the blade of top, in vernier
Micromatic setting is installed above chi, is fixed with the side wall of vernier scale and hangs thing pawl.
The measurement apparatus includes carrying apparatus, graduated cylinder and seeping container.
The bottom of the base is provided with multiple legs.
The top blade indicates scale and is provided with fixed grid, and the fixed grid is engaged structure with the moving grid being arranged on vernier scale
Into capacitor grid transducer.
The seeping container is provided with spillway hole and inlet opening, and inlet opening is provided with valve.
The carrying apparatus includes hanging wire, and one end of the hanging wire, which is connected to, to hang on thing pawl, and the other end is connected with bottom support
Disk, a large amount of holes are provided with the bottom tray.
The vernier scale is provided with electronic display and zero key.
The vernier scale is provided with the second stop screw with the position that top blade is engaged；The micromatic setting and top
The position that blade is engaged is provided with the first stop screw.
The base is provided with air level.
The measure device of any one pervious concrete porosity distribution carries out pervious concrete porosity distribution measure
Method, it is characterised in that comprise the following steps：
Step1：Regulation leg make it that the liquid pearl in air level is in an intermediate position；
Step 2：Unscrew the first stop screw and the second stop screw respectively, vernier scale is slid into the top of top blade
Portion, the second stop screw and the first stop screw are tightened respectively；
Step 3：Seeping container is placed on base, poured water from water inlet to seeping container has water spilling to spillway hole,
Close valve；
Step 4：By carrying apparatus carry on thing pawl is hung, sample is placed in the bottom tray of carrying apparatus；
Step 5：Unscrew the first stop screw and the second stop screw, slow slide downward vernier scale to sample bottom respectively
The first stop screw is tightened, regulation micromatic setting is concordant with spillway hole bottom to sample bottom, tightens close to spillway hole bottom in portion
Second stop screw, then press the zero key of vernier scale；
Step6：Graduated cylinder is placed on base, unscrews the first stop screw and the second stop screw respectively, slowly downwards
Vernier scale is slided to display screen reading close to m millimeters, tightens the first stop screw, regulation micromatic setting to display screen reading is m
Millimeter, tightens the second stop screw, writes down the reading V1 of graduated cylinder, the hole of sample m millimeters thicks and the cumulative volume of skeleton are V, then
The porosity of this m millimeters thick of sample is n1=(V-V1)/V；
Step 7：Complete sample is surveyed with m mm of thickness successively by Step 6, finally gives point of the porosity along height
Cloth.
The method have the advantages that：
1st, the present invention can both determine the ensemble average porosity of pervious concrete, and it is certain thickness can to determine optional position again
Porosity, and pervious concrete porosity distribution can obtain with a certain thickness sequentially determining porosity.
2nd, can the position of accurate Control Assay and the hole of the measure a certain thickness of sample using electronic digital display and micromatic setting
Rate.
3rd, pallet, seeping container, graduated cylinder are removable and change, beneficial to carrying and available for various sizes of sample.
4th, provided with air level and height-adjustable leg, the ground available for out-of-flatness.
5th, whole device is simple in construction, easy to operate.
Brief description of the drawings
The invention will be further described with reference to the accompanying drawings and examples.
Fig. 1 is the structural representation of the present invention.
Fig. 2 is distribution of the sample porosity along height in implementation 3.
In figure, base 1, leg 2, lower pole 3, middle part stop block 4, top blade 5, top stop block 6, air level 7, trip
Scale 8, micromatic setting 9, hang thing pawl 10, the first stop screw 11, the second stop screw 12, graduated cylinder 13, seeping container 14, spilling water
Hole 15, inlet opening 16, hanging wire 17, bottom tray 18.
Embodiment
Embodiments of the present invention are described further below in conjunction with the accompanying drawings.
Embodiment 1：
Such as Fig. 1, the measure device of pervious concrete porosity distribution, it includes base 1, vertically-mounted on the base 1
There is support shaft, arrangement for adjusting height is installed on the support shaft, measurement apparatus is installed in the height regulation adjusting means.
Further, the support shaft includes lower pole 3, middle part stop block 4 is set with the lower pole 3, at middle part
Part on stop block 4 is top blade 5, and top stop block 6 is fixed with the top of lower pole 3.The height regulation dress
Put and be slidably installed including vernier scale 8, the vernier scale 8 on top blade 5, fine setting is installed in the top of vernier scale 8
Device 9, it is fixed with the side wall of vernier scale 8 and hangs thing pawl 10.The measurement apparatus includes carrying apparatus, graduated cylinder 13 and ponding and held
Device 14.
Further, the bottom of the base 1 is provided with multiple legs 2.The height of the leg 2 can be adjusted,
And then the levelness of adjusting base 1.
Further, the top blade 5 indicates scale and is provided with fixed grid, and the fixed grid is with being arranged on vernier scale 8
Moving grid is engaged composition capacitor grid transducer.
Further, the seeping container 14 is provided with spillway hole 15 and inlet opening 16, and inlet opening 16 is provided with valve.
Further, the carrying apparatus includes hanging wire 17, and one end of the hanging wire 17, which is connected to, to hang on thing pawl 10, another
End is connected with bottom tray 18, and a large amount of holes are provided with the bottom tray 18.It ensure that progress is permeable by hole.
Further, the vernier scale 8 is provided with electronic display and zero key.Reading ensure that by electronic display
Convenience, facilitated and be zeroed by zero key.
Further, the vernier scale 8 is provided with the second stop screw 12 with the position that top blade 5 is engaged；It is described
Micromatic setting 9 is provided with the first stop screw 11 with the position that top blade 5 is engaged.Its position is conveniently adjusted by stop screw
Put.
Further, the base 1 is provided with air level 7.
Embodiment 2：
The measure device of any one pervious concrete porosity distribution carries out pervious concrete porosity distribution measure
Method, it is characterised in that comprise the following steps：
Step1：Adjust leg 2 and make it that the liquid pearl in air level is in an intermediate position；
Step2：Unscrew the first stop screw 11 and the second stop screw 12 respectively, vernier scale 8 is slid into top blade 5
Top, tighten the second stop screw 12 and the first stop screw 11 respectively；
Step 3：Seeping container 14 is placed on base 1, poured water from water inlet 16 to seeping container 14 to spillway hole 15
There is water spilling, close valve；
Step 4：By carrying apparatus carry on thing pawl 10 is hung, sample is placed in the bottom tray 18 of carrying apparatus；
Step 5：Unscrew the first stop screw 11 and the second stop screw 12, slow slide downward vernier scale 8 to examination respectively
The first stop screw 11, regulation micromatic setting 9 to sample bottom and the bottom of spillway hole 15 are tightened close to the bottom of spillway hole 15 in sample bottom
Portion is concordant, tightens the second stop screw 12, then presses the zero key of vernier scale 8；
Step 6：Graduated cylinder 13 is placed on base 1, unscrews the first stop screw 11 and the second stop screw 12 respectively,
Slow slide downward vernier scale 8 tightens the first stop screw 11 to display screen reading close to m millimeters, and regulation micromatic setting 9 is to aobvious
Display screen reading is m millimeters, tightens the second stop screw 12, writes down the reading V1 of graduated cylinder 13, the hole and skeleton of sample m millimeters thicks
Cumulative volume be V, then the porosity of this m millimeters thick of sample is n1=(V-V1)/V；
Step 7：Complete sample is surveyed with m mm of thickness successively by Step 6, finally gives point of the porosity along height
Cloth.
Embodiment 3：
Sample is that laboratory simulation Practical Project uses the obtained cylinder pervious concrete of hydrostatic profile mode, highly and
Diameter is respectively 120mm and 100mm, and the bottom of spillway hole 15 is 125mm away from the bottom of seeping container 14, and seeping container 14 is a diameter of
120mm, the range of vernier scale 8 and precision are respectively 150mm and 0.1mm.
Step 1：Adjust leg 2 and make it that the liquid pearl in air level 7 is in an intermediate position；
Step 2：Unscrew the first stop screw 11 and the second stop screw 12 respectively, vernier scale 8 is slid into top blade
5 top, the second stop screw 12 and the first stop screw 11 are tightened respectively；
Step 3：Seeping container 14 is placed on base 1, poured water from water inlet 16 to seeping container 14 to spillway hole 15
There is water spilling, close valve；
Step 4：By carrying apparatus carry on thing pawl 10 is hung, sample is placed in the bottom tray 18 of carrying apparatus,
Compaction plane is up；
Step 5：Unscrew the first stop screw 11 and the second stop screw 12, slow slide downward vernier scale 8 to examination respectively
The first stop screw 11, regulation micromatic setting 9 to sample bottom and the bottom of spillway hole 15 are tightened close to the bottom of spillway hole 15 in sample bottom
Portion is concordant, tightens the second stop screw 12, then presses the zero key of vernier scale 8；
Step 6：Graduated cylinder 13 is placed on base 1, unscrews the first stop screw 11 and the second stop screw 12 respectively,
Slow slide downward vernier scale 8 tightens the first stop screw 11 to display screen reading close to 10mm, and regulation micromatic setting 9 is to aobvious
Display screen reading is 10mm, tightens the second stop screw 12, writes down the reading V1 of graduated cylinder 13, hole thick sample 10mm and skeleton
Cumulative volume is V=10 × π × 502, then porosity thick this 10mm of sample is n1=(V-V1)/V；
Step 7：Complete sample is surveyed with 10mm thickness successively by Step 6, finally gives distribution of the porosity along height.
Result of the test is as shown in table 1 and Fig. 2：Table 1 is each layer porosity of sample；Fig. 2 is point of the sample porosity along height
Cloth.The ensemble average porosity of sample is 26.05%, but each layer porosity differs greatly, and sample is totally advised on compacting direction
Rule is that porosity small bottom porosity in top is big.
Each layer porosity of the sample of table 1
By above-mentioned description, those skilled in the art completely can be in the model without departing from this invention technological thought
In enclosing, various changes and amendments are carried out all within protection scope of the present invention.The unaccomplished matter of the present invention, belongs to ability
The common knowledge of field technique personnel.
Claims (9)
1. the measure device of pervious concrete porosity distribution, it is characterised in that：It includes base（1）, the base（1）It is upper perpendicular
Support shaft directly is installed, arrangement for adjusting height is installed on the support shaft, survey is installed in the height regulation adjusting means
Measure device；
The support shaft includes lower pole（3）, the lower pole（3）On be set with middle part stop block（4）, in middle part stop block
（4）On part be top blade（5）, in lower pole（3）Top be fixed with top stop block（6）；
The arrangement for adjusting height includes vernier scale（8）, the vernier scale（8）It is slidably installed in top blade（5）On,
Vernier scale（8）Top micromatic setting is installed（9）, in vernier scale（8）Side wall on be fixed with hang thing pawl（10）；
The measurement apparatus includes carrying apparatus, graduated cylinder（13）And seeping container（14）.
2. the measure device of pervious concrete porosity distribution according to claim 1, it is characterised in that：The base
（1）Bottom multiple legs are installed（2）.
3. the measure device of pervious concrete porosity distribution according to claim 1, it is characterised in that：The top chi
Body（5）Indicate scale and be provided with fixed grid, the fixed grid is with being arranged on vernier scale（8）On moving grid be engaged form capacitive grating sensing
Device.
4. the measure device of pervious concrete porosity distribution according to claim 1, it is characterised in that：The ponding holds
Device（14）Provided with spillway hole（15）And inlet opening（16）, inlet opening（16）Provided with valve.
5. the measure device of pervious concrete porosity distribution according to claim 1, it is characterised in that：The loading dress
Put including hanging wire（17）, the hanging wire（17）One end be connected to hang thing pawl（10）On, the other end is connected with bottom tray（18）,
The bottom tray（18）On be provided with a large amount of holes.
6. the measure device of pervious concrete porosity distribution according to claim 1, it is characterised in that：The vernier scale
（8）Provided with electronic display and zero key.
7. the measure device of pervious concrete porosity distribution according to claim 1, it is characterised in that：The vernier scale
（8）With top blade（5）The position being engaged is provided with the second stop screw（12）；The micromatic setting（9）With top blade
（5）The position being engaged is provided with the first stop screw（11）.
8. the measure device of pervious concrete porosity distribution according to claim 1, it is characterised in that：The base
（1）It is provided with air level（7）.
9. pervious concrete hole is carried out using the measure device of claim 1-8 any one pervious concrete porosity distributions
The method of rate measure of spread, it is characterised in that comprise the following steps：
Step1：Adjust leg（2）So that air level（7）In liquid pearl it is in an intermediate position；
Step 2：Unscrew the first stop screw respectively（11）With the second stop screw（12）, by vernier scale（8）Slide into top chi
Body（5）Top, tighten the second stop screw respectively（12）With the first stop screw（11）；
Step 3：By seeping container（14）It is placed on base（1）On, from water inlet（16）To seeping container（14）Pour water to spilling water
Hole（15）There is water spilling, close valve；
Step 4：Carrying apparatus carry is hung into thing pawl（10）On, sample is placed on to the bottom tray of carrying apparatus（18）On；
Step 5：Unscrew the first stop screw respectively（11）With the second stop screw（12）, slow slide downward vernier scale（8）Extremely
Sample bottom is close to spillway hole（15）Bottom, tighten the first stop screw（11）, adjust micromatic setting（9）To sample bottom with overflowing
Water hole（15）Bottom is concordant, tightens the second stop screw（12）, then press vernier scale（8）Zero key；
Step 6：By graduated cylinder（13）It is placed on base（1）On, unscrew the first stop screw respectively（11）With the second stop screw
（12）, slow slide downward vernier scale（8）To display screen reading close to m millimeters, the first stop screw is tightened（11）, regulation fine setting
Device（9）It is m millimeters to display screen reading, tightens the second stop screw（12）, write down graduated cylinder（13）Reading V1, sample m milli
The cumulative volume of the thick hole of rice and skeleton be V, then the porosity of this m millimeters thick of sample for n1=（V-V1）/V；
Step 7：Complete sample is surveyed with m mm of thickness successively by Step 6, finally gives distribution of the porosity along height.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711042374.XA CN107643243B (en) | 2017-10-30 | 2017-10-30 | Device and method for measuring porosity distribution of pervious concrete |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711042374.XA CN107643243B (en) | 2017-10-30 | 2017-10-30 | Device and method for measuring porosity distribution of pervious concrete |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107643243A true CN107643243A (en) | 2018-01-30 |
| CN107643243B CN107643243B (en) | 2023-05-02 |
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|---|---|---|---|
| CN201711042374.XA Active CN107643243B (en) | 2017-10-30 | 2017-10-30 | Device and method for measuring porosity distribution of pervious concrete |
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|---|---|
| CN107643243B (en) | 2023-05-02 |
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