CN107643244A - A kind of concrete impermeability test device - Google Patents
A kind of concrete impermeability test device Download PDFInfo
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- CN107643244A CN107643244A CN201711061895.XA CN201711061895A CN107643244A CN 107643244 A CN107643244 A CN 107643244A CN 201711061895 A CN201711061895 A CN 201711061895A CN 107643244 A CN107643244 A CN 107643244A
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- 238000012360 testing method Methods 0.000 title claims abstract description 47
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 42
- 239000004570 mortar (masonry) Substances 0.000 claims description 15
- ODINCKMPIJJUCX-UHFFFAOYSA-N Calcium oxide Chemical compound [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 claims description 12
- 235000012255 calcium oxide Nutrition 0.000 claims description 6
- 239000000292 calcium oxide Substances 0.000 claims description 6
- 230000004888 barrier function Effects 0.000 claims description 5
- 239000002689 soil Substances 0.000 claims description 3
- 230000015271 coagulation Effects 0.000 claims description 2
- 238000005345 coagulation Methods 0.000 claims description 2
- 238000002474 experimental method Methods 0.000 abstract description 12
- 230000000694 effects Effects 0.000 abstract description 5
- 230000008901 benefit Effects 0.000 abstract description 4
- 239000000463 material Substances 0.000 abstract description 4
- 229910001220 stainless steel Inorganic materials 0.000 description 4
- 239000010935 stainless steel Substances 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 238000005266 casting Methods 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 2
- 239000010931 gold Substances 0.000 description 2
- 229910052737 gold Inorganic materials 0.000 description 2
- 238000007689 inspection Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 238000009527 percussion Methods 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 210000004243 sweat Anatomy 0.000 description 1
Landscapes
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The invention belongs to testing equipment field, is related to a kind of concrete impermeability test device, including ball-type concrete sample and pre-buried pressure guiding pipe, and pre-buried pressure guiding pipe one end is integrally connected by pouring with concrete sample, and the other end is connected with water pipe.Invention under the premise of corresponding specification is met, is made test specimen quality mitigate 30% weight, 35kg is relieved to by 50.87kg using the special geometrical feature of spheroid test specimen；Reach simultaneously and be stripped simple, light weight, easy carrying, material saving, the effect for being easy to comprehensive observation seepage point, so as to improve the effect of experiment and economic benefit.
Description
Technical field
The invention belongs to testing equipment field, and in particular to a kind of ball-type concrete impermeability test device.
Background technology
Water-tight concrete is widely used in waterwork, underwater, water, underground and other architectural engineerings for having seepage resistance demand.
The structure and working principle of existing concrete Anti-leakage instrument：
The existing concrete impervious instrument of MTSH-8.0 types is to communicate therewith the pipe-line system of connection everywhere using sealing container
Pressure principle (head carelessness is disregarded), is pressed, and keep pressure within the limits prescribed by intelligent numerical control meter with water pump
Come the detection means tested.Mainly it is made up of frame die trial, separator, water pump, water tank and electrical control gear.
Frame die trial:What frame was welded using shaped steel, the thick steel plate pallets of 1.5mm are spread above, and M10 bolt will
Die trial receptacle disk is fixed in frame, using six die trials, is connected between die trial and die trial by M12 bolt, middle
" O " shape rubber ring seals, and specimen enclosure fastens among die trial, and with special allen wrench.
Separator：Separator is that valve and a backwater valve are concentrated and be placed in before instrument, mainly controls six
The logical or cut-off in sample water route, backwater valve is depressurizing.
Water pump：Water pump, by the two poles of the earth gear shift, drives eccentric shaft rotation, then led to again using 90W motor as power source
Cross guide pillar and connecting rod drives plunger is reciprocating to be operated.Due to the flow very little of water pump, therefore can approx think to supply
Hydraulic pressure to sample is static state.
Water tank：Water tank is the container of water storage, and plays the percussion that slows down of press water, will by water filling nozzle before detection
In water injection water tank, after experiment, water in tank is drained by the nozzle that discharges water.
Electrical control instrument：For controlling water pump to pressurize.
Concrete impermeability test device disclosed in Chinese invention patent CN201620299957.5, including mixed mud sample and
Pre-buried pressure guiding pipe, pre-buried pressure guiding pipe one end are connected by pouring connected mixed mud sample core, the other end with water pipe.By in water pipe
Press water is passed through, press water is entered in mixed mud sample by pre-buried pressure guiding pipe, tested.Above-mentioned patent solves concrete
The problem of difficult is sealed between concrete sample and frame die trial during impermeability test, improves the success rate of impermeability test and impervious
Practicality of the test instrument in engineering.But it still suffers from following point：
1st, concrete sample volume, weight mean to consume more materials greatly, and experimentation cost is high.MTSH-8.0 cylinders
Anti-leakage instrument is seeped water using enlarged footing from middle part, and it is 150mm that can not ensure creepage distance, and maximum distance is even up to
212.13mm, cause the hydraulic pressure value measured not accurate enough.Cylinder test specimen is placed on the table simultaneously, and its lower surface is hidden
Gear, if test specimen can not be observed from following table sweat.
2nd, concrete sample weight is larger, reaches 50.87kg, and test specimen is placed on Anti-leakage instrument table top together with frame die trial
When have larger difficulty.Because cylinder features of shape itself, it is not easy to find suitable stress point, by between hand and frame die trial
Frictional force, generally require 3 people while carry, reduce test efficiency；Potential safety hazard to a certain extent also be present；For volume
Bigger concrete test block, demoulding difficulty are larger.
The content of the invention
The purpose of the present invention is overcome the deficiencies in the prior art, there is provided a kind of ball-type concrete impermeability test device.
In order to achieve the above object, present invention employs following technical proposal：
A kind of concrete impermeability test device, including ball-type concrete sample and pre-buried pressure guiding pipe, pre-buried pressure guiding pipe one end
Integrally it is connected with concrete sample by pouring, the other end is connected with water pipe.
The present invention utilizes the special geometrical feature of spheroid test specimen, under the premise of corresponding specification is met, significantly mitigates test specimen
Weight, reach and be stripped simple, light weight, easily carry, the effect of material saving.Meanwhile can be whole compared to cylinder, spheroid
Surface observation experimental phenomena, so it is more conducive to the accuracy of result of the test.
Preferably, above-mentioned concrete impermeability test device also includes the workbench for placing concrete sample, the coagulation
Soil sample both sides are provided with intelligent alarm temperature measurer, and intelligent alarm temperature measurer is fixed on workbench top, and concrete sample surface is set
There is quick lime layer.
In experiment, contacted from the water that concrete sample infiltrates with quick lime layer, produced heat is detected by temperature measurer
Arrive, and prompt testing crew concrete sample experiment to complete, record hydraulic pressure.Make testing crew without in real time to concrete sample
Observed.
Further preferably, described pre-buried pressure guiding pipe one end is fixed on the core of concrete sample.Ensure that creepage distance is uniform,
Test result is accurate.
Still more preferably, it is additionally provided with catch basin between the workbench and concrete sample.Catch basin, which is used to collect, to be tried
The water come out when testing from concrete sample infiltration of ambient, workbench cleaning, clean and tidy and raising security can be kept.
Still more preferably, after the pre-buried pressure guiding pipe exit sequentially passes through downwards corresponding catch basin and workbench,
Exit top is connected by fastener and workbench, exit bottom connecting water pipe.Exit not only passes through direct and water pipe
It is connected and enters the passage of concrete sample core as press water, the preformed hole of work top can be passed through again, concrete is tried
Sample is connected with workbench, concrete sample is fixed on the operation on testing machine and is more succinctly more convenient, and concrete sample
Fixation does not have to frame die trial shell, reduces the cost of test apparatus, has saved experimentation cost.
Still more preferably, the end face that the pre-buried pressure guiding pipe is cast in concrete sample is provided with pre- pouring with mixing
Mortar confining bed of the solidifying soil sample with proportioning.
Still more preferably, one end that the pre-buried pressure guiding pipe is cast in concrete sample is in funnel-form, and funnel is open
Upper surface is provided with the pre- mortar confining bed pouring with concrete sample with proportioning.
The above-mentioned preferable structure of mortar confining bed is mixing confining bed, i.e., funnel opening upper surface is first provided with one layer of gold
Belong to net, pour the mortar barrier film with proportioning with concrete sample on wire netting in advance.Funnel opening can at utmost ensure pressure
Water can uniformly be spread after entering concrete sample core in concrete sample, ensure press water energy uniformly penetrating sample.
Still more preferably, the mortar confining bed replaces with mixing confining bed, including funnel opening upper surface is set
Wire netting and the mortar barrier film with concrete sample with proportioning on wire netting top.
Using closing Rotating fields, can avoid, when pre-buried pressure guiding pipe is fixed with one by pouring with concrete sample, pouring
The concrete water mud built is entered in pre-buried pressure guiding pipe by the embedment end (such as funnel is open) of pre-buried pressure guiding pipe, and obstruction endoporus leads to
Road.Increase wire netting mould, can avoid when pouring concrete mortar confining bed in advance, the concrete poured in advance enters pre-buried impulse
In pipe, pre-buried impulse pipe orifice is blocked.
The present invention has advantages below：
The present invention utilizes the special geometrical feature of spheroid test specimen, under the premise of corresponding specification is met, subtracts test specimen quality
Light 30% weight, 35kg is relieved to by 50.87kg；Reach simultaneously and be stripped simple, light weight, easy carrying, material saving, be easy to entirely
The effect of seepage point is observed in orientation, so as to improve the effect of experiment and economic benefit.
Brief description of the drawings
Fig. 1 is the structural representation of embodiment 1.
Fig. 2 is the structural representation that concrete sample uses that spherical die pours in Fig. 1.
Fig. 3 is the structural representation of combined cavity in Fig. 2.
Fig. 4 is Fig. 3 upward view.
Fig. 5 is the structural representation of embodiment 2.
Reference：1 concrete sample, 2 pre-buried pressure guiding pipes, 3 fasteners, 4 catch basins, 5 workbench, 6 first intelligence reports
Alert temperature measurer, 7 second intelligent alarm temperature measurers, 8 quick lime layers, 9 combined cavities, 10 cavity seats.
Embodiment
Below in conjunction with the accompanying drawings, the present invention is described in detail.
In order to make the purpose , technical scheme and advantage of the present invention be clearer, it is right below in conjunction with drawings and Examples
The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and
It is not used in the restriction present invention.
Embodiment 1：A kind of concrete impermeability test device as shown in Figure 1, including it is concrete sample 1 spherical in shape, pre-
Bury pressure guiding pipe 2, fastener 3, catch basin 4, workbench 5.Concrete sample 1 is installed on the top of workbench 5, concrete sample 1 with
Catch basin 4 is provided between workbench 5.The pre-buried upper end of pressure guiding pipe 2 is fixed on the core of concrete sample 1 by pouring；It is pre-buried to draw
The lower end of pressure pipe 2 is drawn from the bottom of concrete style 1, sequentially passes through connecting water pipe after catch basin 4 and workbench 5, and pass through fastening
Part 3 is connected with workbench 5, concrete sample 1 is fixed on workbench 5, can not move.To ensure concrete in casting process
Press water energy uniformly penetrating sample during the pre-buried tube wall of pressure guiding pipe 2, experiment will not be blocked, pre-buried pressure guiding pipe 2 uses following three
The design of kind scheme：
1st, the end face that pre-buried pressure guiding pipe 2 is cast in concrete sample 1 be provided with it is pre- it is pouring with concrete sample 1 with matching somebody with somebody
The mortar confining bed of ratio.
2nd, one end that pre-buried pressure guiding pipe 2 is cast in concrete sample 1 is in funnel-form, and funnel opening upper surface is provided with pre-
The mortar confining bed with concrete sample 1 with proportioning poured.
3rd, one end that pre-buried pressure guiding pipe 2 is cast in concrete sample 1 is in funnel-form, the gold that funnel opening upper surface is set
Belong to net and the mortar barrier film with concrete sample 1 with proportioning on wire netting top.
The following detailed description of the preparation method and testing inspection step of above-mentioned concrete impermeability test device.
1st, pre-buried pressure guiding pipe is prepared：
Pre-buried pressure guiding pipe overall length 155mm, one end are in funnel shaped, are made up of funnel opening with straight tube pipe, open and straight
Cylinder pipe is connected by connecting bolt or being directly welded to connect.The diameter 20mm of straight tube pipe, long 130mm, there are hole, aperture in centre
2-4mm, for guiding current, the outer wall at straight tube pipe lower end 20mm has 10mm polishing section, i.e., straight tube pipe is polished
It is flat, it is easy to the embedding clamping fixed or rotation of spanner to adjust.Funnel opening height 20mm, it is open as 40mm, is advantageous to expand permeable face
Product, shape can be taper or cylinder or square.During in order to prevent from preparing concrete sample, the concrete slurry poured leaks into leakage
Pre-buried impulse pipe orifice is blocked in bucket is open, layer of metal net is covered in funnel opening, then above with experiment with proportioning
Concrete pour one layer of 10mm mortar barrier film in advance, opening is closed after solidification.
2nd, spherical module is prepared：
Spherical die as shown in Figure 2 is the mould that concrete sample pours, mainly by 10 groups of combined cavity 9 and cavity seat
Into.The internal diameter of combined cavity 9 is 300mm, for the ease of the demoulding, is designed to spherical combined cavity, is made up of three parts, such as Fig. 3-4
It is shown.For the ease of casting concrete, opening, A/F 80mm are provided with the top of combined cavity 9.In order to fix pre-buried draw
Pressure pipe 2, the stainless steel tube that one root long degree is 90mm is set in the top open part of combined cavity 9.Spiral shell is drilled among stainless steel tube
Keyhole, it is easily installed pre-buried pressure guiding pipe 2；Bolt hole is drilled with stainless steel tube both sides, stainless steel tube is fixed on combined cavity 9
On.
3rd, the pre-buried pressure guiding pipe 2 prepared is inserted in combined cavity 9 as shown in Figure 2.The straight tube circle of pre-buried pressure guiding pipe 2
Pipe passes from the interstitial hole of the steel disc of finishing die upper end, and pre-buried depth is 150mm, is fixed with bolt.Make pre-buried pressure guiding pipe pre-
Nuzzle concrete when position it is accurate, and will not be moved when pouring.
4th, the concreting of experiment is being conserved 28 days into combined cavity 9, being then placed in standard curing pond, taken off
Mould.Pre-buried pressure guiding pipe 2 is integrally formed with experiment with concrete, and concrete sample is made.Three mixed muds are obtained by above step
Test specimen.
5th, 3 concrete samples 1 are upside down on the workbench 5 for being placed with catch basin 4, the exit of 3 pre-buried pressure guiding pipes 2
Catch basin 4 and workbench 5 are sequentially passed through downwards, concrete sample 1 and workbench 5 are respectively fixedly connected by fastener 3 for exit,
And difference connecting water pipe.
6th, the valve of 3 water pipes is opened, press water is entered in 3 concrete samples by pre-buried pressure guiding pipe respectively.
7th, finished by the experiment in 24 hours of new specification, such as：The pressurization of engine request sample 0.8MPa, lower limit set 0.6MPa
Constant pressure after 8 hours lower limit automatic boosting be 0.7MPa, then constant pressure 8 hours, lower limit automatic boosting is 0.8MPa, is finished after 8 hours.
8th, during experiment, observe around concrete sample, when there are two concrete samples to there is press water to penetrate
When coming, hydraulic pressure now is write down, the pressure value as tested.
Embodiment 2：A kind of concrete impermeability test device as shown in Figure 5, the first intelligence is added on the basis of implementing 1
Can be alarmed temperature measurer 6, the second intelligent alarm temperature measurer 7, and be provided with quick lime layer 8 on the surface of concrete sample 1.First intelligence
Temperature measurer 6, the second intelligent alarm temperature measurer 7 alarm located at the both sides of concrete sample 1, each measurement concrete sample 1 or so
The temperature change of two spheres.When the water that concrete sample 1 infiltrates contacts with quick lime layer 8, produced heat is by intelligence
Alarm temperature measurer detects, and prompts testing crew concrete sample experiment to complete, and records hydraulic pressure.
The preparation method and testing inspection step of above-mentioned concrete impermeability test device are the same as embodiment 1.
The invention is not limited in foregoing embodiment.The present invention, which expands to, any in this manual to be disclosed
New feature or any new combination, and disclose any new method or process the step of or any new combination.
Claims (8)
1. a kind of concrete impermeability test device, including concrete sample (1) and pre-buried pressure guiding pipe (2), pre-buried pressure guiding pipe (2) one
End is integrally connected by pouring with concrete sample (1), and the other end is connected with water pipe, it is characterised in that：The concrete sample
(1) it is ball-type.
A kind of 2. ball-type concrete impermeability test device according to claim 1, it is characterised in that：Also include placing coagulation
The workbench (5) of soil sample (1), concrete sample (1) both sides are provided with intelligent alarm temperature measurer (7,8), and intelligent alarm is surveyed
Wen Yi (7,8) is fixed on workbench (5) top, and concrete sample (1) surface is provided with quick lime layer (8).
A kind of 3. ball-type concrete impermeability test device according to claim 1 or 2, it is characterised in that：It is described pre-buried to draw
Pressure pipe (2) one end is fixed on the core of concrete sample (1).
A kind of 4. ball-type concrete impermeability test device according to claim 3, it is characterised in that：The workbench (5)
Catch basin (4) is additionally provided between concrete sample (1).
A kind of 5. ball-type concrete impermeability test device according to claim 4, it is characterised in that：The pre-buried pressure guiding pipe
(2) after exit sequentially passes through downwards corresponding catch basin (4) and workbench (5), exit top passes through fastener (3) and work
Make platform (5) to be connected, exit bottom connecting water pipe.
A kind of 6. ball-type concrete impermeability test device according to claim 5, it is characterised in that：The pre-buried pressure guiding pipe
(2) end face being cast in concrete sample (1) is provided with the pre- mortar closing pouring with concrete sample (1) with proportioning
Layer.
A kind of 7. ball-type concrete impermeability test device according to claim 6, it is characterised in that：The pre-buried pressure guiding pipe
(2) one end being cast in concrete sample (1) is in funnel-form, and funnel opening upper surface is provided with pre- pouring tried with concrete
Mortar confining bed of the sample (1) with proportioning.
A kind of 8. ball-type concrete impermeability test device according to claim 7, it is characterised in that：The mortar confining bed
Replace with mixing confining bed, including the wire netting that sets of funnel opening upper surface and wire netting top and concrete sample
(1) with the mortar barrier film of proportioning.
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