CN110455693A - A kind of plastic concrete permeability coefficient in situ detection device - Google Patents
A kind of plastic concrete permeability coefficient in situ detection device Download PDFInfo
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- CN110455693A CN110455693A CN201810429457.2A CN201810429457A CN110455693A CN 110455693 A CN110455693 A CN 110455693A CN 201810429457 A CN201810429457 A CN 201810429457A CN 110455693 A CN110455693 A CN 110455693A
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- torus
- plastic concrete
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- cover board
- metal
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume, or surface-area of porous materials
- G01N15/08—Investigating permeability, pore-volume, or surface area of porous materials
- G01N15/082—Investigating permeability by forcing a fluid through a sample
Abstract
A kind of plastic concrete permeability coefficient in situ detection device, including the torus sample in plastic concrete side hole, the torus specimen surface successively lays sealing ring, metal cover board, counterforce device, the metal cover board is connect by pressure pipe with device for exerting, and the counterforce device is embedded in the end wall recesses of plastic concrete side hole by metal L shape stabilizer blade and torus sample, sealing ring and metal cover board are provide in it.The present invention seals torus sample inner ring body by sealing ring and metal cover board, metal cover board is compressed by counterforce device, it is conveyed in water to torus sample inner ring body by pressure pipe and device for exerting and applies constant water pressure in torus sample inner wall, until torus sample outer wall seeps water, and according to the water percolating capacity in the unit time, water temperature, infiltration height, area of section, computational plasticity concrete filtration coefficient, practical, detection is accurate.
Description
Technical field
The present invention relates to a kind of plastic concrete permeability coefficient in situ detection devices.
Background technique
Plastic concrete has the characteristics such as low-intensity, low-elasticity-modulus and big strain, can be very good mutually suitable with softer basis
It answers, while there is good barrier performance again, be widely applied in the engineerings such as reservoir dam, foundation pit enclosure.Wherein, it seeps
Saturating coefficient is an important Con trolling index of barrier performance, is directly related to the total quality of plastic concrete and uses function
Energy.Therefore, in situ detection plastic concrete permeability coefficient is a very important job.
In the prior art, the method for in situ detection plastic concrete permeability coefficient mainly has following three kinds: (1) fields water injection
Test.Drilling is isolated to the hole section of certain length with embolism, and presses water to the hole section, is determined according to pressure and the relationship of flow
Penetration Signature.The shortcoming of this method: there is potential structure to destroy possibility plastic concrete, therefore under normal circumstances not
Using, be particularly unsuitable for slim (thickness≤500mm) plastic concrete, influence detect practicability.(2) drilling hole and injecting water experiment.
By drilling to examination section water filling, to determine the test method of infiltration coefficient, drilling constant head water injection test and drilling drop can be divided into
Head water injection test.This method is suitable for thicker plastic concrete.The shortcoming of this method: for it is slim (thickness≤
500mm) plastic concrete easily penetrates into the soil layer other than plastic concrete in test period internal drilling water filling, makes to detect
As a result it is not necessarily the infiltration coefficient of plastic concrete itself, influences detection accuracy.(3) well water injection test is enclosed.It is mainly used for
Height spray wall anti-permeability performance detection builds the 3 abutment walls formation consistent with detected wall technology and encloses well, and bottom is enclosed in closing
And top, to form an only all around wall for well wall leakage.Then water injection test is done using cavity, or in enclosing well
Water injection test is done in the drilling of center portion position.The shortcoming of this method: detection labor intensity is big, influences to detect practicability.
Since there are above-mentioned shortcomings for existing detection method, therefore need to carry out innovation improvement.
Summary of the invention
The invention proposes a kind of practical, detections accurately, the reasonable plastic concrete permeability coefficient of design is examined in situ
Survey device.The detection device is able to solve accurate existing for existing various in situ detection thin type plastic concrete permeability coefficient methods
The problem of property and practicability.
The technical solution adopted by the present invention is that: a kind of plastic concrete permeability coefficient in situ detection device, including plasticity are mixed
Torus sample in solidifying earthwork hole, the torus specimen surface successively lay sealing ring, metal cover board, counterforce device, institute
It states metal cover board to connect by pressure pipe with device for exerting, the counterforce device is embedded at plasticity coagulation by metal L shape stabilizer blade
It is provide in it in the end wall recesses of earthwork hole and by torus sample, sealing ring and metal cover board.The present invention passes through sealing ring and gold
Belong to cover board and seal torus sample inner ring body, metal cover board is compressed by counterforce device, is conveyed by pressure pipe and device for exerting
In water to torus sample inner ring body and apply constant water pressure in torus sample inner wall, until torus sample outer wall seeps water,
And according to the water percolating capacity in the unit time, water temperature, infiltration height, area of section, computational plasticity concrete filtration coefficient.
Further, plastic concrete side hole is cuboid, is square and its center and torus in surface projection
Sample is overlapped in the surface projection center of circle, and the bottom surface plastic concrete Fang Keng is flushed with torus sample bottom surface, and end wall mill has and counter-force
The groove of matched with devices.
Further, torus sample bottom surface is connected with plastic concrete.
Further, the sealing ring is waterstop ring, and internal diameter and torus sample inner ring body are mating.
Further, the metal cover board is plectane, and centre of surface is connected with the pressure communicated with torus sample inner ring body
Pipe.
Further, the pressure pipe other end is connected with device for exerting.
Further, the device for exerting is to convey in water to torus sample inner ring body and make hydraulic pressure increase and energy perseverance
Determine the hydraulic structure of hydraulic pressure, hydraulic structure can be using various structures such as unidirectional Automatic-boosting water pumps, as long as water can be conveyed extremely
In torus sample inner ring body and make hydraulic pressure increase and energy constant water pressure.
Further, the device for exerting is equipped with the display screen for showing hydraulic pressure value, and the device for exerting is equipped with can
Apply the control element of constant water pressure.
Further, the counterforce device includes metal counter-force crossbeam, two is symmetrically disposed below metal counter-force crossbeam both ends
Back to metal L shape stabilizer blade.
Further, the metal counter-force crossbeam is rectangular slab, and center is drilled with poling circular hole matched with pressure pipe, with metal
A circle opposite position is uniformly drilled with multiple counter-force screw holes to cover board in the outer part, counter-force bolt can precession counter-force screw hole and tail portion can arrive
Up to metal cover board, both ends are each to be uniformly drilled with multiple connected circular holes for connecting metal L shape stabilizer blades, metal counter-force crossbeam bottom surface and metal
Cover board top surface distance should meet operation and require.
Further, it is stabilizer blade that the metal L shape stabilizer blade, which includes the overhanging cuboid in lower end, and stabilizer blade is mating with groove and insertion is deep
At least 10mm is spent, at 90o, upper end cuboid top surface is uniformly drilled with multiple connection metal counter-force crossbeams for upper end cuboid and stabilizer blade
Connecting screw hole corresponding with connected circular hole.
Beneficial effects of the present invention: (1) it during carrying out detection process, is sealed in torus sample by sealing ring and cover board
Ring body compresses metal cover board by counterforce device, is conveyed in water to torus sample inner ring body by pressure pipe and device for exerting
And apply constant water pressure in torus sample inner wall, until torus sample outer wall seeps water, and according to the infiltration in the unit time
Amount, water temperature, infiltration height, area of section, computational plasticity concrete filtration coefficient is practical, and detection is accurate.(2) with it is existing
Various in situ detection thin type plastic concrete permeability coefficient methods are compared, since seepage part occurs in torus sample outer wall,
It is unrelated with the soil layer other than plastic concrete, that is, the infiltration coefficient that resulting infiltration coefficient is exactly plastic concrete itself is detected,
Improve accuracy；Due to not needing enclose well work, labor intensity is greatly reduced, detection efficiency is improved, and is micro-
Damage testing enhances practicability.
Detailed description of the invention
Fig. 1 is structural representation front view of the invention.
Fig. 2 is structural representation side view of the invention.
Fig. 3 is use diagrammatic elevation view of the invention.
Fig. 4 is use diagrammatic side view of the invention.
Specific embodiment
Next combined with specific embodiments below invention is further explained, but does not limit the invention to these tools
Body embodiment.One skilled in the art would recognize that present invention encompasses may include in Claims scope
All alternatives, improvement project and equivalent scheme.
Referring to Fig.1-4, a kind of plastic concrete permeability coefficient in situ detection device, including in plastic concrete side hole 4
Sealing ring 8, metal cover board 14, counterforce device 7, the gold are successively laid in torus sample 11,11 surface of torus sample
Belong to cover board 14 to connect by pressure pipe 17 with device for exerting 19, the counterforce device 7 is embedded at plasticity by metal L shape stabilizer blade 5
It is provide in it in 4 end wall recesses 2 of concrete square hole and by torus sample 11, sealing ring 8 and metal cover board 14.The present invention passes through
Sealing ring 8 and metal cover board 14 seal 11 inner ring body of torus sample, compress metal cover board 14 by counterforce device 7, pass through pressure
Solenoid 17 and device for exerting 19 convey in water to 11 inner ring body of torus sample and apply constant water pressure in torus sample 11
Wall, until 11 outer wall of torus sample seep water, and according in the unit time water percolating capacity, water temperature, infiltration height, area of section,
13 infiltration coefficient of computational plasticity concrete.
The hole of plastic concrete side described in the present embodiment 4 is cuboid, is square and its center and annulus in surface projection
Body sample 11 is overlapped in the surface projection center of circle, side length 300mm, height 80mm；Cheat 4 bottom surfaces and torus sample in plastic concrete side
11 bottom surfaces flush, and end wall mill has groove 2 matched with counterforce device 7, groove 2 height 14mm, depth 12mm.
The bottom surface of torus sample 11 described in the present embodiment is connected with plastic concrete 13；The outer ring of torus sample 11 is straight
150 ㎜ of diameter, 30 ㎜ of annular diameters, 80 ㎜ of height.
The sealing ring 8 described in the present embodiment is waterstop ring, using rubber material, 40 ㎜ of internal diameter, 5 ㎜ of thickness.
Metal cover board 14 described in the present embodiment is round plate, 100 ㎜ of diameter, 10 ㎜ of thickness；Centre of surface is connected with and circle
The pressure pipe 17 that 11 inner ring body of ring body sample communicates；Pressure pipe 17 is using survey pressure flexible rubber hose, 5 ㎜ of outer diameter, 2 ㎜ of internal diameter.
17 other end of pressure pipe described in the present embodiment is connected with device for exerting 19.
Device for exerting 19 described in the present embodiment, be can convey in water to 11 inner ring body of torus sample and make hydraulic pressure increase and
The hydraulic structure of energy constant water pressure, using unidirectional Automatic-boosting water pump.
Device for exerting 19 described in the present embodiment is equipped with display screen 18 for showing hydraulic pressure value, 19 on the device for exerting
Equipped with the control element that can apply constant water pressure.
Counterforce device 7 described in the present embodiment includes that metal counter-force crossbeam 9, two is symmetrically disposed on 9 both ends of metal counter-force crossbeam
Lower section back to metal L shape stabilizer blade 5.
Metal counter-force crossbeam 9 described in the present embodiment is rectangular steel plates, length 300mm, width 100mm, thickness 24mm；Center
It is drilled with poling circular hole 16 matched with pressure pipe 17, aperture 12mm；A circle opposite position is uniform in the outer part with metal cover board 14
It is drilled with 4 counter-force screw holes 10, aperture 16mm；M16 counter-force bolt 12 can the reachable cover board 14 of precession counter-force screw hole 10 and tail portion；Two
Hold each connected circular hole 6 for being uniformly drilled with 2 connection metal L shape stabilizer blades 5, aperture 17mm；9 bottom surface of metal counter-force crossbeam and metal cover
Plate top surface distance 15mm.
Metal L shape stabilizer blade 5 described in the present embodiment includes that the overhanging cuboid in lower end is stabilizer blade, and thickness 12mm is parallel with end wall
Direction length 100mm is embedded in depth of groove 10mm；Upper end cuboid and stabilizer blade are at 90o, thickness 24mm, with end wall parallel direction
Length 100mm；Upper end cuboid top surface is uniformly drilled with the connection spiral shell corresponding with connected circular hole 6 of 2 connection metal counter-force crossbeams 9
Hole 1.
The present embodiment use process is as follows: (1) modify: 13 surface of plastic concrete with hand-held concrete sanding machine polish
It is smooth；(2) it marks: in the boundary line in 13 surface markers torus sample 11 of plastic concrete, plastic concrete side hole 4；(3) it bores
Hole sample preparation: using the thin diamond wall hollow boring bit of 150 ㎜ of internal diameter, 30 ㎜ of outer diameter, the drilling machine with depth measurement device is being moulded
Property 13 proper site of concrete drills torus sample 11.(4) system side hole is cut；Using concrete cutting machine and tool is cut, is cut
Plastic concrete side hole 4 processed, being polished using extension bar hand-held concrete sanding machine, it is smooth to cheat bottom.(5) portable mixed using extension bar
Solidifying soil notch grinder cooperates T shape sintered diamond bistrique, and bistrique top surface is away from 11 surface of torus sample, 60 ㎜, 15 ㎜ of bistrique height.
Extension bar is close to plastic concrete side and cheats the grinding of 4 side walls, and groove 2,12 ㎜ of depth of groove is made.(6) positioning is fixed: 2 metal L
The stabilizer blade of shape stabilizer blade 5 imbeds 2,4 connection bolts 3 of groove across 6 precession connecting screw hole 1 of connected circular hole, tightens；It is sequentially placed close
Seal 8,14,4 counter-force bolts of metal cover board, 12 precession counter-force screw hole 10, until 12 tail portion of counter-force bolt reaches metal cover board 14
Surface is tightened, and is compressed metal cover board 14, is sealed 11 inner ring body of torus sample.(7) it connects: 17 one end of pressure pipe and metal cover
Plate 14 is connected and fixed, and the other end passes through poling circular hole 16 and is connected and fixed with device for exerting 19.(8) it measures: starting device for exerting 19,
It according to setting constant water pressure is required, conveys in water to 11 inner ring body of torus sample, applies constant water pressure in torus sample 11
Inner wall, until 11 outer wall of torus sample seeps water.Prepare enough blotting paper according to water percolating capacity, weighing packs tightly blotting paper
11 outer wall of torus sample starts simultaneously at record time (be accurate to point).Blotting paper is taken out in interval 0.5h~1.5, weighs, front and back
Of poor quality twice is the water percolating capacity of the period.The water percolating capacity for recording continuous six periods, measures water temperature, and test can stop.
(9) calculate: plastic concrete permeability coefficient calculates according to the following formula:
kt=QL/AHt
kt-- infiltration coefficient when water temperature T DEG C, cm/s；
Amount of seepage in t seconds Q-- time, cm3；
L-- infiltration height, mm；Using (outer annular diameter-annular diameters)/2=(150-30)/2=60；
H-- constant water pressure, cm；
T-- interval time, s
A-- area of section, cm2；Using inner ring body surface area=3.14 × 3 × 8=7536.
Claims (11)
1. a kind of plastic concrete permeability coefficient in situ detection device, it is characterised in that: including the circle in plastic concrete side hole
Ring body sample, the torus specimen surface successively lay sealing ring, metal cover board, counterforce device, and the metal cover board passes through
Pressure pipe is connect with device for exerting, and the counterforce device is embedded at plastic concrete side by metal L shape stabilizer blade and cheats end wall recesses
It is interior and torus sample, sealing ring and metal cover board are provide in it.
2. a kind of plastic concrete permeability coefficient in situ detection device according to claim 1, it is characterised in that: the modeling
Property concrete square hole be cuboid, be square in surface projection and its center and torus sample be in surface projection center of circle weight
It closes, the bottom surface plastic concrete Fang Keng is flushed with torus sample bottom surface, and end wall mill has groove matched with counterforce device.
3. a kind of plastic concrete permeability coefficient in situ detection device according to claim 1, it is characterised in that: the circle
Ring body sample bottom surface is connected with plastic concrete.
4. a kind of plastic concrete permeability coefficient in situ detection device according to claim 1, it is characterised in that: described close
Seal is waterstop ring, and internal diameter and torus sample inner ring body are mating.
5. a kind of plastic concrete permeability coefficient in situ detection device according to claim 1, it is characterised in that: the gold
Category cover board is plectane, and centre of surface is connected with the pressure pipe communicated with torus sample inner ring body.
6. a kind of plastic concrete permeability coefficient in situ detection device according to claim 5, it is characterised in that: the pressure
The solenoid other end is connected with device for exerting.
7. a kind of plastic concrete permeability coefficient in situ detection device according to claim 6, it is characterised in that: described to apply
Pressure device is the hydraulic structure that can convey in water to torus sample inner ring body and make hydraulic pressure increase and energy constant water pressure, hydraulic
Structure can be using various structures such as unidirectional Automatic-boosting water pumps, as long as can convey in water to torus sample inner ring body and make
Hydraulic pressure increases and can constant water pressure.
8. according to claim 6, a kind of plastic concrete permeability coefficient in situ detection device as claimed in claim 7, feature
Be: the device for exerting is equipped with the display screen for showing hydraulic pressure value, and the device for exerting, which is equipped with, can apply constant water
The control element of pressure.
9. a kind of plastic concrete permeability coefficient in situ detection device according to claim 1, it is characterised in that: described anti-
Power device include metal counter-force crossbeam, two be symmetrically disposed below metal counter-force crossbeam both ends back to metal L shape stabilizer blade.
10. a kind of plastic concrete permeability coefficient in situ detection device according to claim 9, it is characterised in that: described
Metal counter-force crossbeam is rectangular slab, and center is drilled with poling circular hole matched with pressure pipe, and a circle is opposite in the outer part with metal cover board
Answer position to be uniformly drilled with multiple counter-force screw holes, counter-force bolt can precession counter-force screw hole and tail portion reach metal cover board, both ends are each
It is uniformly drilled with the connected circular hole of multiple connection metal L shape stabilizer blades, metal counter-force crossbeam bottom surface should expire with metal cover board top surface distance
Foot operation requires.
11. special according to claim 9, a kind of plastic concrete permeability coefficient in situ detection device described in any one of claim 10
Sign is: it is stabilizer blade that the metal L shape stabilizer blade, which includes the overhanging cuboid in lower end, stabilizer blade and groove is mating and insert depth at least
10mm, upper end cuboid and stabilizer blade at 90o, upper end cuboid top surface be uniformly drilled with it is multiple connection metal counter-force crossbeams with connection
The corresponding connecting screw hole of circular hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810429457.2A CN110455693A (en) | 2018-05-08 | 2018-05-08 | A kind of plastic concrete permeability coefficient in situ detection device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810429457.2A CN110455693A (en) | 2018-05-08 | 2018-05-08 | A kind of plastic concrete permeability coefficient in situ detection device |
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| CN110455693A true CN110455693A (en) | 2019-11-15 |
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| CN201810429457.2A Pending CN110455693A (en) | 2018-05-08 | 2018-05-08 | A kind of plastic concrete permeability coefficient in situ detection device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111337413A (en) * | 2020-04-17 | 2020-06-26 | 杭州固益强新材料科技有限公司 | A impervious capability test equipment for reinforced concrete structure |
| CN114563328A (en) * | 2022-04-02 | 2022-05-31 | 湖北昌耀新材料工程技术研究有限责任公司 | Testing device and method for permeability coefficient of shrinkable cementing material and testing method for permeation path of shrinkable cementing material |
-
2018
- 2018-05-08 CN CN201810429457.2A patent/CN110455693A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111337413A (en) * | 2020-04-17 | 2020-06-26 | 杭州固益强新材料科技有限公司 | A impervious capability test equipment for reinforced concrete structure |
| CN114563328A (en) * | 2022-04-02 | 2022-05-31 | 湖北昌耀新材料工程技术研究有限责任公司 | Testing device and method for permeability coefficient of shrinkable cementing material and testing method for permeation path of shrinkable cementing material |
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