CN107101876A - Concrete slab corrosion deterioration test devices and methods therefor under complexing action - Google Patents
Concrete slab corrosion deterioration test devices and methods therefor under complexing action Download PDFInfo
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- CN107101876A CN107101876A CN201710478152.6A CN201710478152A CN107101876A CN 107101876 A CN107101876 A CN 107101876A CN 201710478152 A CN201710478152 A CN 201710478152A CN 107101876 A CN107101876 A CN 107101876A
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- 238000012360 testing method Methods 0.000 title claims abstract description 91
- 238000005260 corrosion Methods 0.000 title claims abstract description 64
- 230000007797 corrosion Effects 0.000 title claims abstract description 63
- 230000006866 deterioration Effects 0.000 title claims abstract description 29
- 230000000536 complexating effect Effects 0.000 title claims abstract description 21
- 238000000034 method Methods 0.000 title claims abstract description 12
- 238000002955 isolation Methods 0.000 claims abstract description 101
- 230000006835 compression Effects 0.000 claims abstract description 49
- 238000007906 compression Methods 0.000 claims abstract description 49
- 238000007789 sealing Methods 0.000 claims abstract description 24
- 229910000831 Steel Inorganic materials 0.000 claims description 138
- 239000010959 steel Substances 0.000 claims description 138
- 229920001971 elastomer Polymers 0.000 claims description 72
- 239000005060 rubber Substances 0.000 claims description 72
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 63
- 239000000243 solution Substances 0.000 claims description 59
- 239000004575 stone Substances 0.000 claims description 24
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims description 17
- 229910001209 Low-carbon steel Inorganic materials 0.000 claims description 16
- 238000007599 discharging Methods 0.000 claims description 11
- 230000005540 biological transmission Effects 0.000 claims description 9
- 239000003292 glue Substances 0.000 claims description 7
- CSNNHWWHGAXBCP-UHFFFAOYSA-L Magnesium sulfate Chemical compound [Mg+2].[O-][S+2]([O-])([O-])[O-] CSNNHWWHGAXBCP-UHFFFAOYSA-L 0.000 claims description 6
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 claims description 6
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 claims description 6
- TWRXJAOTZQYOKJ-UHFFFAOYSA-L Magnesium chloride Chemical compound [Mg+2].[Cl-].[Cl-] TWRXJAOTZQYOKJ-UHFFFAOYSA-L 0.000 claims description 4
- 239000004816 latex Substances 0.000 claims description 4
- 229920000126 latex Polymers 0.000 claims description 4
- 238000012544 monitoring process Methods 0.000 claims description 4
- 239000013589 supplement Substances 0.000 claims description 4
- 239000002352 surface water Substances 0.000 claims description 4
- 238000004364 calculation method Methods 0.000 claims description 3
- 238000002347 injection Methods 0.000 claims description 3
- 239000007924 injection Substances 0.000 claims description 3
- 229910052943 magnesium sulfate Inorganic materials 0.000 claims description 3
- 235000019341 magnesium sulphate Nutrition 0.000 claims description 3
- 238000003825 pressing Methods 0.000 claims description 3
- 239000011780 sodium chloride Substances 0.000 claims description 3
- 229910052938 sodium sulfate Inorganic materials 0.000 claims description 3
- 235000011152 sodium sulphate Nutrition 0.000 claims description 3
- 238000004026 adhesive bonding Methods 0.000 claims description 2
- 229910001629 magnesium chloride Inorganic materials 0.000 claims description 2
- 235000002639 sodium chloride Nutrition 0.000 claims description 2
- 238000009434 installation Methods 0.000 claims 2
- 235000011147 magnesium chloride Nutrition 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 17
- 230000007774 longterm Effects 0.000 abstract description 6
- 230000008595 infiltration Effects 0.000 abstract description 5
- 238000001764 infiltration Methods 0.000 abstract description 5
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 abstract description 3
- 230000008878 coupling Effects 0.000 description 8
- 238000010168 coupling process Methods 0.000 description 8
- 238000005859 coupling reaction Methods 0.000 description 8
- 230000003628 erosive effect Effects 0.000 description 7
- 239000000126 substance Substances 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 3
- 238000002474 experimental method Methods 0.000 description 3
- 238000010998 test method Methods 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 238000004088 simulation Methods 0.000 description 2
- 239000011800 void material Substances 0.000 description 2
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 1
- 241000370738 Chlorion Species 0.000 description 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- 240000002853 Nelumbo nucifera Species 0.000 description 1
- 235000006508 Nelumbo nucifera Nutrition 0.000 description 1
- 235000006510 Nelumbo pentapetala Nutrition 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000000460 chlorine Substances 0.000 description 1
- 229910052801 chlorine Inorganic materials 0.000 description 1
- 235000017168 chlorine Nutrition 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 230000007062 hydrolysis Effects 0.000 description 1
- 238000006460 hydrolysis reaction Methods 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000009738 saturating Methods 0.000 description 1
- -1 sulfate radical Chemical compound 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/02—Details
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N17/00—Investigating resistance of materials to the weather, to corrosion, or to light
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/022—Environment of the test
- G01N2203/0236—Other environments
- G01N2203/024—Corrosive
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- Life Sciences & Earth Sciences (AREA)
- Biochemistry (AREA)
- Analytical Chemistry (AREA)
- Pathology (AREA)
- Immunology (AREA)
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Chemical & Material Sciences (AREA)
- General Physics & Mathematics (AREA)
- General Health & Medical Sciences (AREA)
- Biodiversity & Conservation Biology (AREA)
- Ecology (AREA)
- Environmental Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Testing Resistance To Weather, Investigating Materials By Mechanical Methods (AREA)
Abstract
The invention discloses concrete slab corrosion deterioration test device and method under a kind of complexing action, the device applies constant drawing, compression by forward and reverse pretightning force counter plate test specimen, seal high pressure attack solution and apply high hydraulic pressure and the effect of high hydraulic gradient, and the frictional force that panel is born is provided using bed course rubbing device.The device is divided into seal box, isolation ward and corrosion room, and seal box sealing high pressure attack solution, shielded box is used for the counterforce device for protecting sensor, loading axis etc. to avoid solution from corroding and apply as tension, and corrosion room limits infiltration lane.Roller bearing makes the horizontal pressure force of load bar, and all the frictional force between bed course block and panel test specimen is balanced, and test specimen three-dimensional stress, bed course frictional force and attack solution pressure size monitored by pressure sensor and hydraulic pressure sensor, and screw the method with make-up solution by secondary and keep pretightning force, frictional force, solution pressure steady in a long-term.The one or more infiltration corrosion environment such as sulfate, villaumite can be provided in seal box.
Description
Technical field
The invention belongs to modelling technique field, concrete slab corrosion deterioration is tried under more particularly to a kind of complexing action
Experiment device and its method.
The present invention relates to concrete slab corrosion deterioration test method and its device under complexing action, especially a kind of mould
Intend concrete slab complex stress condition, bear the aggressivity such as sulfate, villaumite under the effect of bed course frictional force and high hydraulic gradient
The experimental rig and method of solution infiltration corrosion.
Background technology
Concrete for hydraulic structure is a kind of porous media material, and stress state and its void ratio are closely bound up.It is smaller in compression
When, the inside concrete closing of pores, when compression is larger, hole opens.When bearing pulling force effect, internal void can open, hole
Gap is than increase.Concrete slab is as leakage preventing structure in earth and rockfill dam, stone masonry dam, the seepage control system of RCCD and its reinforcing
It is widely used in engineering.Stress state is complicated, and the panel intermediate pressurised on usual high concrete panel dam, two ends are pressurized, and
By the effect of bed course frictional force.Concrete slab is acted on by ambient water for a long time, erosion carbon dioxide such as sulfate radical, chlorion etc. in water
Being reacted with hydrolysis product of cement makes it lose gelling and produces deterioration, causes concrete strength to reduce, panel bearing capacity
Decline, serious can also threaten dam safety.Therefore, research concrete slab is in drawing, compression-bed course friction-high hydraulic gradient
Dam safety is run the corrosion deterioration performance spent under coupling and panel durability evaluation is significant.
It is that concrete under the bent load-chemical erosion coupling of unidirectional tensile, compressive, bending is molten to carry out both at home and abroad relatively large number of
Deterioration test is lost, it is molten under drawing, compression, bed course friction and high hydraulic gradient coupling specifically designed for concrete slab
Erosion deterioration performance study is relatively fewer.How tension and compression stress, bed course frictional force and attack solution are applied to concrete slab test specimen
High hydraulic gradient effect is the emphasis and difficult point of indoor dissolved corrosion test.When being acted on to pressure bed course application level, how to make
Frictional force is balanced without being that can experiment enter by counter-force support and the permeable stone frictional influence of bed course bottom therewith between bed course and test specimen
Capable key.Also, conventional three-dimensional tension and compression load is loaded using jack hydraulic, but can not provide load steady in a long-term, is filled
It is set to high.Counterweight and spring loads can not reach the high stress level wanted, and device is heavy, it has not been convenient to.
The content of the invention
In order to realize simulation concrete panel oozing under the effect of pressure, bed course frictional force and high hydraulic gradient indoors
Saturating dissolved corrosion test, the present invention provides concrete slab corrosion deterioration test devices and methods therefor, the device under a kind of complexing action
And its method can provide the shadow of bed course friction steady in a long-term and three-dimensional stress Effect study attack solution to concrete slab performance
Ring.
To achieve the above object, the technical solution adopted by the present invention is：
Concrete slab corrosion deterioration test device under a kind of complexing action, including closed chamber, isolation ward and corrosion room, institute
State and isolation ward is provided with closed chamber, corrosion room is provided with isolation ward；
The corrosion room includes high elastic rubber pipe 2, the pedestal 8 that sets from bottom to top in high elastic rubber pipe 2, under it is permeable
Stone 9, steel ball track 11, stainless shot 10, bed course block 12, concrete slab test specimen 1 and upper dankness stone 15, pedestal 8 is installed on close
Seal on room bottom plate 19；
The relative side wall of the outer high elastic rubber pipe 2 two of concrete slab test specimen 1 is tension face, the concrete surface
Two other relative side wall of the outer high elastic rubber pipe 2 of plate test specimen 1 is compression face, and tension face is provided with tension steel plate 3 and pulling force
Bolt 22, described one end of stress bolt 22 props up concrete slab test specimen 1 through tension steel plate 3, the other end prop up tension side every
From room steel plate 16, pulling force sensor 24 is installed on the stress bolt 22, the compression face connects pressure by mild steel bed course 4
Steel plate 5, the pressure steel plate 5 is fixed on mild steel bed course 4 by compression bolts 6, and pressure biography is provided with the compression bolts 6
Sensor 7；
The isolation ward includes tension side isolation ward steel plate 16 and compression-side isolation ward steel plate 25, the tension side isolation ward
The bottom of steel plate 16 and compression-side isolation ward steel plate 25 is fixed on closed chamber bottom plate 19, and is located at tension face and compression face respectively
It is outer that the top of outside, tension side isolation ward steel plate 16 and compression-side isolation ward steel plate 25 connects the top of high elastic rubber pipe 2 respectively
Wall, confined space is formed between tension side isolation ward steel plate 16, compression-side isolation ward steel plate 25 and high elastic rubber pipe 2；
The closed chamber includes top and is provided with water inlet, hydraulic pressure sensor 29 and built-in axle pressure load bar sensor 36
Axle presses load bar 34,
Wherein：The top of upper dankness stone 15 is provided with pressurization lid, and position and the axle of the pressurization lid press the phase of load bar 34
Corrosion room drainpipe is provided with correspondence, the corresponding closed chamber bottom plate 19 in corrosion room, outdoor corresponding closed chamber bottom plate 19 is sealed
On be provided with seal box drainpipe.
Further, the closed chamber includes closed chamber side wall 21, the closed chamber side wall 21 and closed chamber top plate 35
Joint is provided with seal box water stop rubber 32, and the axle pressure load bar 34 stretches into closed chamber through closed chamber top plate 35, sealed
Axial load water stop rubber 38 is provided between ceiling plate 35 and axle pressure load bar 34, the axle presses the inserting end peripheral hardware of load bar 34
It is equipped with axial load containment vessel 37.
Further, the bed course block 12 is provided with frictional force loading axis 13, institute along the side that stainless shot 10 is moved
State and frictional force load bar sensor 33 is installed in frictional force loading axis 13, the frictional force loading axis 13 is by loading support 14
It is fixed on closed chamber bottom plate 19.
Further, the tension side isolation ward steel plate 16, compression-side isolation ward steel plate 25 respectively with high elastic rubber pipe 2
Top exterior walls connect, and the inside top of high elastic rubber pipe 2 is provided with a groove, is provided with steel plate for sealing water in the groove, recessed
Be provided with water stop rubber 27 inside and outside groove, the water stop rubber 27, high elastic rubber pipe 2 and steel plate for sealing water by screw 26 respectively with
Tension side isolation ward steel plate 16, compression-side isolation ward steel plate 25 are fixed.
Further, the outside top of the tension side isolation ward steel plate 16 connects closed chamber side wall by transmission rod 20
21, the tension side isolation ward steel plate 16, the bottom of compression-side isolation ward steel plate 25 are provided between closed chamber bottom plate 9 respectively
Bottom surface water stop rubber 17, and fixed by bottom surface bolt 18.
Further, it is provided with the water inlet on water inlet valve 28, corrosion room drainpipe and is provided with corrosion
Closed chamber water discharging valve 30 is provided with room water discharging valve 31, the closed chamber drainpipe.
Further, the junction of the stress bolt 22 and tension side isolation ward steel plate 16 is provided with roller bearing 23.
Further, the tension face of the high elastic rubber pipe is provided with preformed hole, the preformed hole and is provided with pulling force
Steel plate 3, the tension steel plate 3 and concrete slab test specimen 1 are bonded by structure glue, and the compression face of the high elastic rubber pipe leads to
Cross structure glue and bond mild steel bed course 4.
Further, attack solution is passed through by the water inlet of closed chamber, the attack solution be sodium sulphate, magnesium sulfate,
The mixed liquor of any one or a few solution in sodium chloride, magnesium chloride.
Concrete slab corrosion deterioration test method, comprises the following steps under a kind of complexing action：
The first step, attack solution calculation of pressure；
Second step, compression bolts and stress bolt intensity requirement are calculated；
3rd step, seals concrete sample, is coated first in the compression face for the concrete standard test specimen 1 for pouring and having conserved
Latex, and sealed using high elastic rubber pipe 2 in the outside of concrete standard test specimen 1；After sealing, in the high elastic rubber of tension face
Reserved opening, and smearing structure glue are cut on pipe 2, tension steel plate 3 is pasted onto on concrete slab test specimen 1, treats that it reaches bonding
After intensity, in the high elastic rubber pipe external pasting mild steel bed course 4 of compression face, the application pressing force steel plate 5 on mild steel bed course 4, in pressure
Equal prepared screw-bolt hole on power steel plate 5, tension steel plate 3；Limit seepage channel and flow to bottom from the top of concrete standard test specimen 1；
4th step, positive pretightning force applies：Using compression bolts 6 through the bolt hole in pressure steel plate 5, and screw pressure
Bolt 6 applies compression to concrete standard test specimen 1, and prestressing force size is monitored by pressure sensor 7, until specifying lotus
Carry；
5th step, assembles pedestal and installs concrete standard test specimen：Permeable stone 9, lower permeable stone 9 under being installed on pedestal 8
Upper install installs bed course block 12 on the steel ball track 11 that some rows are internally provided with stainless shot 10, stainless shot 10, and in pad
The side of layer block 12 is installed by frictional force loading axis 13 and the loading support 14 for supporting frictional force loading axis 13, concrete standard
Upper dankness stone 15 is installed at the top of test specimen 1, and pedestal 8 is installed on closed chamber bottom plate 19；
6th step, installs tension side isolation ward steel plate：Tension side isolation ward steel plate 16 is installed, and uses bottom surface water stop rubber
17 and bottom surface bolt 18 be fixed on closed chamber bottom plate 19, force transmission rack 20 is welded to tension side isolation ward steel plate 16 and close
Between joint sealing side wall 21；
7th step, applies reverse pretightning force and frictional force：One end is welded on the pulling force on tension side isolation ward steel plate 16
Bolt 22 screws stress bolt 22 and applies pulling force to tension steel plate 3 through the screwed hole on tension steel plate 3, applies reversely pre-
Clamp force is to designated value；Then, level is applied to the frictional force in vertical tension direction to designated value by frictional force loading axis 13, and
Frictional force size is monitored by pulling force sensor 24；
8th step, installs compression-side isolation ward steel plate and seals：Compression-side isolation ward steel plate 25 is installed, by concrete standard
Test specimen 1, pedestal and frictional force loading support 14 are enclosed in isolation ward, and fix high resiliency rubber at the top of isolation ward by bolt 26
Closed chamber inside sebific duct 2, steel plate for sealing water and water stop rubber 27, isolation ward with outside attack solution is isolated；
9th step, injects attack solution：Water inlet valve 28 at the top of opening closed chamber, injection testing attack solution, and
Solution pressure in pressurization, the monitoring closed chamber of hydraulic pressure sensor 29, until reaching the high hydraulic gradient of needs；
Tenth step, make-up solution pressure and pretightning force：When hydraulic pressure sensor 29 monitors that solution pressure is lost in closed chamber
More than setting value, then attack solution, make-up solution pressure, if isolation room pressure, pulling force spiral shell are injected by water inlet valve 28
The loss of bolt pretightning force exceedes setting value and opens seal box water discharging valve 30, releases attack solution, opens closed chamber, use torque wrench
Adjust pressure, stress bolt and supplement pretightning force to designated value, then seal, refill attack solution and continue dissolved corrosion test.
Compared with prior art, the invention has the advantages that：
1. a kind of drawing that the present invention is provided, compression-high hydraulic gradient coupling concrete slab corrosion deterioration test
Device, can be continuously applied pressure and bed course frictional force with counter plate, and high hydraulic gradient erosion environment can be provided again, can be facilitated
Carry out concrete slab corrosion deterioration test.
2. setting bed course block under panel test specimen, the contact condition and mutual rubbing action of simulated panel and bed course can
Reflect the corrosion of concrete slab under engineering virtual condition.
3. using press rods and support long term constant compression can be applied to bed course block, and pass through load bar containment vessel and close
Envelope room separates it with external corrosion solution, prevents because solution corrosion causes compression decay too fast, and passed by pressure
Sensor monitors frictional force attenuation, when beyond allowed band, carries out supplement frictional force.
4. stainless shot and two tracks are set between bed course block and permeable stone, for reducing bed course and bottom permeable stone
Between frictional force, make between concrete slab test specimen and bed course block rub balance press rods application horizontal force, increase experiment essence
Degree.
5. tension side isolation ward steel plate is both applied there is provided reverse pretightning force as reaction frame in high-strength bolt with counter plate test specimen
Plus pulling force, set roller bearing track not limit direction displacement again, the horizontal force for applying frictional force load bar is whole
Rub dynamic balance between bed course block and test specimen, improves test accuracy, it is ensured that frictional force is smoothly loaded.
5. the concrete slab that the present apparatus can be carried out under different three-dimensional pressures, frictional force and the effect of high hydraulic gradient is molten
Corrosion test, high-strength bolt pretightning force size can be adjusted as needed and axle presses size with the different stress shape of simulated panel test specimen
State, adjustment load bar pressure size is to apply different size of frictional force, by controlling solution pressure size to apply different water
Power gradient.
6. by providing different solutions in seal box, the present apparatus can realize three-dimensional pressure-bed course frictional force-Gao Shui
Power gradient-sulfate attack coupling, three-dimensional pressure-bed course frictional force-high hydraulic gradient-chloride erosion coupling, three-dimensional tension and compression
Power-bed course frictional force-high hydraulic gradient-corrosion coupling and three-dimensional pressure-bed course frictional force-high hydraulic gradient-a variety of chemistry
The lower concrete slab deterioration test of effect coupling.
So author designed is a kind of not only different pressures can be kept for a long time but also different hydraulic gradients and difference can be provided
The technical good and economic device of chemical erosion material effect.The device can provide simultaneously long term constant pressure effect,
High hydraulic gradient effect and chemical erosion effect, different directions stress intensity, stress level, frictional force can be also adjusted as needed
Size, hydraulic gradient and chemical action level.
Brief description of the drawings
The structural representation of Fig. 1 tension sides of the present invention；
Fig. 2 is the partial structurtes enlarged drawing in Fig. 1；
The structural representation of Fig. 3 compression-sides of the present invention；
Fig. 4 is the partial structurtes enlarged drawing in Fig. 3；
Wherein：1- concrete slab test specimens, 2- high elastic rubber pipes, 3- tension steel plates, 4- mild steel bed courses, 5- pressure steel
Permeable stone under plate, 6- compression bolts, 7- pressure sensors, 8- pedestals, 9-, 10- stainless shots, 11 steel ball tracks, 12- bed courses
Block, 13- frictional force loading axis, 14- loading supports, 15- upper dankness stones, 16- tension side isolation ward steel plates, 17- bottom surfaces sealing rubber
Skin, 18- bottom surfaces bolt, 19- closed chamber bottom plates, 20- transmission rods, 21- closed chamber side walls, 22- stress bolts, 23- roller bearings,
24- pulling force sensors, 25- compression-side isolation ward steel plates, 26- bolts, 27- water stop rubbers, 28- water inlet valves, 29- hydraulic pressure is passed
Sensor, 30- closed chamber water discharging valves, 31- corrosions room water discharging valve, 32- closed chamber water stop rubbers, 33- frictional force load bar is passed
Sensor, 34- axles pressure load bar, 35- closed chamber top plates, 36- axles pressure load bar sensor, 37- axial load containment vessels, 38- axle pressures
Bar water stop rubber.
Embodiment
The present invention is further described with reference to embodiment.
As Figure 1-4, concrete slab corrosion deterioration test device under a kind of complexing action, including closed chamber, isolation
It is provided with room and corrosion room, the closed chamber in isolation ward, isolation ward and is provided with corrosion room；
The corrosion room includes high elastic rubber pipe 2, the pedestal 8 that sets from bottom to top in high elastic rubber pipe 2, under it is permeable
Stone 9, steel ball track 11, stainless shot 10, bed course block 12, concrete slab test specimen 1 and upper dankness stone 15, pedestal 8 is installed on close
Seal on room bottom plate 19；
The relative side wall of the outer high elastic rubber pipe 2 two of concrete slab test specimen 1 is tension face, the concrete surface
Two other relative side wall of the outer high elastic rubber pipe 2 of plate test specimen 1 is compression face, and tension face is provided with tension steel plate 3 and pulling force
Bolt 22, described one end of stress bolt 22 props up concrete slab test specimen 1 through tension steel plate 3, the other end prop up tension side every
From room steel plate 16, pulling force sensor 24 is installed on the stress bolt 22, the compression face connects pressure by mild steel bed course 4
Steel plate 5, the pressure steel plate 5 is fixed on mild steel bed course 4 by compression bolts 6, and pressure biography is provided with the compression bolts 6
Sensor 7；
The isolation ward includes tension side isolation ward steel plate 16 and compression-side isolation ward steel plate 25, the tension side isolation ward
The bottom of steel plate 16 and compression-side isolation ward steel plate 25 is fixed on closed chamber bottom plate 19, and is located at tension face and compression face respectively
It is outer that the top of outside, tension side isolation ward steel plate 16 and compression-side isolation ward steel plate 25 connects the top of high elastic rubber pipe 2 respectively
Wall, confined space is formed between tension side isolation ward steel plate 16, compression-side isolation ward steel plate 25 and high elastic rubber pipe 2；
The closed chamber includes top and is provided with water inlet, hydraulic pressure sensor 29 and built-in axle pressure load bar sensor 36
Axle presses load bar 34,
Wherein：The top of upper dankness stone 15 is provided with pressurization lid, and position and the axle of the pressurization lid press the phase of load bar 34
Corrosion room drainpipe is provided with correspondence, the corresponding closed chamber bottom plate 19 in corrosion room, outdoor corresponding closed chamber bottom plate 19 is sealed
On be provided with seal box drainpipe.
The closed chamber includes closed chamber side wall 21, and the joint of the closed chamber side wall 21 and closed chamber top plate 35 is set
Have a seal box water stop rubber 32, the axle pressure load bar 34 stretches into closed chamber through closed chamber top plate 35, closed chamber top plate 35 and
It is provided between axle pressure load bar 34 outside axial load water stop rubber 38, the inserting end of the axle pressure load bar 34 and is provided with axial load
Containment vessel 37.
The bed course block 12 is provided with frictional force loading axis 13 along the side that stainless shot 10 is moved, and the frictional force adds
Carry and frictional force load bar sensor 33 is installed on axle 13, the frictional force loading axis 13 is fixed on sealing by loading support 14
On room bottom plate 19.
The tension side isolation ward steel plate 16, compression-side isolation ward steel plate 25 respectively with outside the top of high elastic rubber pipe 2
Wall connects, and the inside top of high elastic rubber pipe 2 is provided with a groove, the groove and is provided with peripheral hardware in steel plate for sealing water, groove
Be equipped with water stop rubber 27, the water stop rubber 27, high elastic rubber pipe 2 and steel plate for sealing water by screw 26 respectively with tension side every
Fixed from room steel plate 16, compression-side isolation ward steel plate 25, isolation ward is by water stop rubber 27 and steel plate for sealing water collective effect, to protect
Card attack solution does not enter isolation ward, so as to protect drawing, compression bolts and its corresponding sensor.
The outside top of the tension side isolation ward steel plate 16 connects closed chamber side wall 21, the tension by transmission rod 20
Side isolation ward steel plate 16, the bottom of compression-side isolation ward steel plate 25 are provided with bottom surface sealing rubber between closed chamber bottom plate 9 respectively
Skin 17, and fixed by bottom surface bolt 18.
It is provided with the water inlet on water inlet valve 28, corrosion room drainpipe and is provided with corrosion room water discharging valve
31, closed chamber water discharging valve 30 is provided with the closed chamber drainpipe.
The junction of the stress bolt 22 and tension side isolation ward steel plate 16 is provided with roller bearing 23.
The tension face of the high elastic rubber pipe is provided with preformed hole, the preformed hole and is provided with tension steel plate 3, described
Tension steel plate 3 and concrete slab test specimen 1 are bonded by structure glue, and the compression face of the high elastic rubber pipe is gluing by structure
Tie mild steel bed course 4.
Attack solution is passed through by the water inlet of closed chamber, the attack solution is sodium sulphate, magnesium sulfate, sodium chloride, chlorine
Change the mixed liquor of any one or a few solution in magnesium.
The present invention can carry out complex stress condition and high hydraulic gradient to simulation concrete panel test specimen actual working state
The lower corrosion deterioration test of effect, by forward and reverse pretightning force to concrete slab test specimen application drawing, pressure, bed course frictional force and
High pressure attack solution permeates corrosion..
After tension side isolation ward steel plate 16 is fixed in bottom, it is possible to provide counter-force, therefore it is referred to as to play reaction frame effect.By
Side isolation ward steel plate is drawn on the one hand to be used for separating attack solution, on the other hand as the reaction frame of reverse pretightning force, inside connection
Tension side high-strength bolt, external connection transmission rod, and using welding manner connection, increase tension side isolation ward steel plate rigidity, lead to
Reverse pretightning force self-balancing in seal box can be made by crossing both sides transmission rod, increase pressure panel dissolution systems rigidity.Tension side
Two panels sealing steel plate is mutually supported, and makes structure remained stable.
Roller bearing is provided with tension side isolation ward steel plate, roller bearing branch is set with reference to bed course block bottom and bed course block bottom
Seat, make test specimen in direction without constraint, can move freely, it is ensured that the horizontal force of frictional force load bar all by bed course block with
Frictional force is balanced between panel test specimen, it is ensured that effective application of bed course frictional force.
The invention discloses concrete slab corrosion deterioration test device and method under a kind of complexing action, the device passes through
Forward and reverse pretightning force counter plate test specimen applies constant drawing, compression, and sealing high pressure attack solution applies high hydraulic pressure and high waterpower
Gradient effect, and provide the frictional force that panel is born using bed course rubbing device.The device is divided into seal box, isolation ward and molten
Room is lost, seal box sealing high pressure attack solution, shielded box is used for protecting sensor, loading axis etc. to avoid solution from corroding and be used as drawing
The counterforce device that stress applies, corrosion room limits infiltration lane.Roller bearing makes the horizontal pressure force of load bar all by bed course block
Frictional force is to balance between panel test specimen, and is rubbed by pressure sensor and hydraulic pressure sensor monitoring test specimen three-dimensional stress, bed course
Wipe power and attack solution pressure size, and screw the method with make-up solution by secondary and keep pretightning force, frictional force, solution
Pressure is steady in a long-term.The one or more infiltration corrosion environment such as sulfate, villaumite can be provided in seal box.
Concrete slab corrosion deterioration test method, comprises the following steps under a kind of complexing action：
The first step, attack solution calculation of pressure：
It is assumed that required hydraulic gradient is 100, the concrete for hydraulic structure test specimen used in the present embodiment is standard specimen, chi
Very little is 150 × 150 × 150mm, thus can calculate head at the top of concrete sample and be：H=150 × 100 × 10-3=15m, test specimen
Top pressure is：P=15 × 1000 × 10=0.15MPa；
It follows that when hydraulic gradient is 100, solution pressure is 0.15MPa in closed chamber.
Second step, compression bolts and stress bolt intensity requirement are calculated：
It is assumed that required level is 1MPa to drawing, compression, then pressure is
F=σ A=1 × 106×150×150×10-6=22.5KN
There are four high-strength bolts, the then drawing that every pressure or stress bolt are born on every piece of tension steel plate and pressure steel plate
Power or pressure are 5.625KN, and therefore, required 8.8 stage pressures or pulling force high-strength bolt minimum diameter are：
Need that pressure drawing, force snesor are installed in view of pressure or stress bolt, therefore select 10mm8.8 grades of high-strength bolts of diameter
Pulling force, pressure steel plate level can be met to 1MPa pressure requirements, similarly, axle pressure load bar can be obtained high-strength from 10mm8.8 grades
Bolt can also meet requirement.
3rd step, seals concrete sample, is coated first in the compression face for the concrete standard test specimen 1 for pouring and having conserved
Latex, and sealed using high elastic rubber pipe 2 in the outside of concrete standard test specimen 1；After sealing, in the high elastic rubber of tension face
150 × 150mm square reserved opening, and smearing structure glue are cut on pipe 2, tension steel plate 3 is pasted onto concrete slab test specimen 1
On, after it reaches adhesion strength, mild steel bed course 4 is pasted using latex outside the high elastic rubber pipe of compression face, in mild steel pad
Application pressing force steel plate 5, the equal prepared screw-bolt hole on pressure steel plate 5, tension steel plate 3 on layer 4；Seepage channel is limited from concrete mark
The quasi- top of test specimen 1 flows to bottom；Each tension face is provided with four groups of stress bolts 22 up and down, and each compression face is provided with
The four groups of compression bolts 6 in lower left and right,
4th step, positive pretightning force applies：The bolt hole of pressure steel plate 5 is passed through using compression bolts 6, and screws pressure spiral shell
Bolt 6 applies compression to concrete standard test specimen 1, and prestressing force size is monitored by pressure sensor 7, until specifying load；
5th step, assembles pedestal and installs concrete standard test specimen：Permeable stone 9, lower permeable stone 9 under being installed on pedestal 8
Upper install installs bed course block 12 on the steel ball track 11 that two rows row is internally provided with stainless shot 10, stainless shot 10, and in pad
Frictional force loading axis 13 and the loading support 14 for supporting frictional force loading axis 13 are installed in the side of layer block 12, load support 14
Bottom is fixed on closed chamber bottom plate 19, and upper dankness stone 15 is installed at the top of concrete standard test specimen 1, and pedestal 8 is installed on closed chamber
On bottom plate 19；
6th step, installs tension side isolation ward steel plate：Tension side isolation ward steel plate 16 is installed, and uses bottom surface water stop rubber
17 and bottom surface bolt 18 be fixed on closed chamber bottom plate 19, force transmission rack 20 is welded to tension side isolation ward steel plate 16 and close
Between joint sealing side wall 21；
7th step, applies reverse pretightning force and frictional force：One end is welded on the pulling force on tension side isolation ward steel plate 16
Bolt 22 screws stress bolt 22 and applies pulling force to tension steel plate 3 through the screwed hole on tension steel plate 3, applies reversely pre-
Clamp force is to designated value；Then, level is applied to the frictional force in vertical tension direction to designated value by frictional force loading axis 13, and
Frictional force size is monitored by pulling force sensor 24；
8th step, installs compression-side isolation ward steel plate and seals：Compression-side isolation ward steel plate 25 is installed, by concrete standard
Test specimen 1, pedestal and frictional force loading support 14 are enclosed in isolation ward, and fix high resiliency rubber at the top of isolation ward by bolt 26
Closed chamber inside sebific duct 2, steel plate for sealing water and water stop rubber 27, isolation ward with outside attack solution is isolated, and prevents prestressing force spiral shell
Bolt corrodes and causes pretightning force loss and pressure, stress bolt and its internal drawing, pressure sensor failure；
9th step, injects attack solution：Water inlet valve 28 at the top of opening closed chamber, injection testing attack solution, and
Solution pressure in pressurization, the monitoring closed chamber of hydraulic pressure sensor 29, until reaching the high hydraulic gradient of needs；
Tenth step, make-up solution pressure and pretightning force：When hydraulic pressure sensor 29 monitors that solution pressure is lost in closed chamber
More than setting value, then attack solution, make-up solution pressure, if isolation room pressure, pulling force spiral shell are injected by water inlet valve 28
The loss of bolt pretightning force exceedes setting value and opens seal box water discharging valve 30, releases attack solution, opens closed chamber, use torque wrench
Adjust pressure, stress bolt and supplement pretightning force to designated value, then seal, refill attack solution and continue dissolved corrosion test.
Described above is only the preferred embodiment of the present invention, it should be pointed out that：For the ordinary skill people of the art
For member, under the premise without departing from the principles of the invention, some improvements and modifications can also be made, these improvements and modifications also should
It is considered as protection scope of the present invention.
Claims (10)
1. concrete slab corrosion deterioration test device under a kind of complexing action, it is characterised in that：
Including closed chamber, isolation ward and corrosion room, it is provided with the closed chamber in isolation ward, isolation ward and is provided with corrosion room；
The corrosion room includes high elastic rubber pipe（2）, high elastic rubber pipe（2）The pedestal inside set from bottom to top（8）, it is lower
Water stone（9）, steel ball track（11）, stainless shot（10）, bed course block（12）, concrete slab test specimen（1）And upper dankness stone（15）,
Pedestal（8）It is installed on closed chamber bottom plate（19）On；
The concrete slab test specimen（1）Outer high elastic rubber pipe（2）Two relative side walls are tension face, the concrete surface
Plate test specimen（1）Outer high elastic rubber pipe（2）Two other relative side wall is compression face, and tension face is provided with tension steel plate（3）
And stress bolt（22, the stress bolt（22）One end passes through tension steel plate（3）Prop up concrete slab test specimen（1）, the other end
Prop up tension side isolation ward steel plate（16）, the stress bolt（22）On pulling force sensor is installed（24）, the compression face lead to
Cross mild steel bed course（4）Connect pressure steel plate（5）, the pressure steel plate（5）Pass through compression bolts（6）It is fixed on mild steel bed course（4）
On, the compression bolts（6）On pressure sensor is installed（7）；
The isolation ward includes tension side isolation ward steel plate（16）With compression-side isolation ward steel plate（25）, the tension side isolation ward
Steel plate（16）With compression-side isolation ward steel plate（25）Bottom be fixed on closed chamber bottom plate（19）On, and respectively be located at tension face and
On the outside of compression face, tension side isolation ward steel plate（16）With compression-side isolation ward steel plate（25）Top connect high elastic rubber respectively
Pipe（2）Top exterior walls, tension side isolation ward steel plate（16）, compression-side isolation ward steel plate（25）With high elastic rubber pipe（2）Between
Form confined space；
The closed chamber is provided with water inlet, hydraulic pressure sensor including top（29）Load bar sensor is pressed with built-in axle（36）'s
Axle presses load bar（34）,
Wherein：The upper dankness stone（15）Top is provided with pressurization lid, and position and the axle of the pressurization lid press load bar（34）Phase
Correspondence, the corresponding closed chamber bottom plate in corrosion room（19）On be provided with corrosion room drainpipe, seal outdoor corresponding closed chamber bottom plate
（19）On be provided with seal box drainpipe.
2. concrete slab corrosion deterioration test device under complexing action according to claim 1, it is characterised in that：It is described
Closed chamber includes closed chamber side wall（21）, the closed chamber side wall（21）With closed chamber top plate（35）Joint be provided with sealing
Case water stop rubber（32）, the axle pressure load bar（34）Through closed chamber top plate（35）Stretch into closed chamber, closed chamber top plate（35）
Load bar is pressed with axle（34）Between be provided with axial load water stop rubber（38）, the axle pressure load bar（34）Inserting end outside set
There is axial load containment vessel（37）.
3. concrete slab corrosion deterioration test device under complexing action according to claim 1, it is characterised in that：It is described
Bed course block（12）Along stainless shot（10）The side of motion is provided with frictional force loading axis（13）, the frictional force loading axis
（13）On frictional force load bar sensor is installed（33）, the frictional force loading axis（13）By loading support（14）It is fixed on
Closed chamber bottom plate（19）On.
4. concrete slab corrosion deterioration test device under complexing action according to claim 1, it is characterised in that：It is described
Tension side isolation ward steel plate（16）, compression-side isolation ward steel plate（25）Respectively with high elastic rubber pipe（2）Top exterior walls connect,
And high elastic rubber pipe（2）Inside top is provided with to be provided with inside and outside steel plate for sealing water, groove in a groove, the groove and is provided with only
Water rubber（27）, the water stop rubber（27）, high elastic rubber pipe（2）Pass through screw with steel plate for sealing water（26）Respectively with tension side
Isolation ward steel plate（16）, compression-side isolation ward steel plate（25）It is fixed.
5. concrete slab corrosion deterioration test device under complexing action according to claim 1, it is characterised in that：It is described
Tension side isolation ward steel plate（16）Outside top pass through transmission rod（20）Connect closed chamber side wall（21）, the tension side isolation
Room steel plate（16）, compression-side isolation ward steel plate（25）Bottom respectively with closed chamber bottom plate（9）Between be provided with bottom surface sealing rubber
Skin（17）, and pass through bottom surface bolt（18）It is fixed.
6. concrete slab corrosion deterioration test device under complexing action according to claim 1, it is characterised in that：It is described
Water inlet valve is provided with water inlet（28）, corrosion room water discharging valve is provided with the drainpipe of the corrosion room（31）, it is described
Closed chamber water discharging valve is provided with closed chamber drainpipe（30）.
7. concrete slab corrosion deterioration test device under complexing action according to claim 1, it is characterised in that：It is described
Stress bolt（22）With tension side isolation ward steel plate（16）Junction be provided with roller bearing（23）.
8. concrete slab corrosion deterioration test device under complexing action according to claim 1, it is characterised in that：It is described
The tension face of high elastic rubber pipe is provided with preformed hole, the preformed hole and is provided with tension steel plate（3）, the tension steel plate
（3）With concrete slab test specimen（1）Bonded by structure glue, the high elastic rubber pipe（2）Compression face it is gluing by structure
Tie mild steel bed course（4）.
9. concrete slab corrosion deterioration test device under complexing action according to claim 1, it is characterised in that：Pass through
The water inlet of closed chamber is passed through attack solution, and the attack solution is any one in sodium sulphate, magnesium sulfate, sodium chloride, magnesium chloride
The mixed liquor of kind or several solns.
10. the side of concrete slab corrosion deterioration test device under a kind of any described complexing action based on claim 1-9
Method, it is characterised in that comprise the following steps：
The first step, attack solution calculation of pressure；
Second step, compression bolts and stress bolt intensity requirement are calculated；
3rd step, seals concrete sample, coats latex in the compression face for the concrete standard test specimen for pouring and having conserved first,
And sealed using high elastic rubber pipe outside concrete standard test specimen；After sealing, cut on the high elastic rubber pipe of tension face
Reserved opening, and smearing structure glue are opened, tension steel plate is pasted onto on concrete slab test specimen, after it reaches adhesion strength,
The high elastic rubber pipe external pasting mild steel bed course of compression face, the application pressing force steel plate on mild steel bed course, in pressure steel plate, pulling force steel
Equal prepared screw-bolt hole on plate；Limit seepage channel and flow to bottom from the top of concrete standard test specimen；
4th step, positive pretightning force applies：Using compression bolts through the bolt hole in pressure steel plate, and screw compression bolts to
Concrete standard test specimen applies compression, and prestressing force size is monitored by pressure sensor, until specifying load；
5th step, assembles pedestal and installs concrete standard test specimen：Permeable stone under being installed on pedestal, if being installed on lower permeable stone
Dry row is internally provided with installation bed course block on the steel ball track of stainless shot, stainless shot, and is rubbed in the side installation of bed course block
Wipe and upper dankness stone, base are installed at the top of power loading axis and the loading support for supporting frictional force loading axis, concrete standard test specimen
Seat is installed on closed chamber bottom plate；
6th step, installs tension side isolation ward steel plate：Tension side isolation ward steel plate is installed, and uses bottom surface water stop rubber and bottom surface
Bolt is fixed on closed chamber bottom plate, and force transmission rack is welded between tension side isolation ward steel plate and seal box side wall；
7th step, applies reverse pretightning force and frictional force：The stress bolt that one end is welded on tension side isolation ward steel plate is worn
The screwed hole crossed on tension steel plate, and screw stress bolt and apply pulling force to tension steel plate 3, applies reverse pretightning force to specified
Value；Then, level is applied to the frictional force in vertical tension direction to designated value by frictional force loading axis, and passes through pull sensing
Device monitors frictional force size；
8th step, installs compression-side isolation ward steel plate and seals：Install compression-side isolation ward steel plate, by concrete standard test specimen,
Pedestal and frictional force loading support are enclosed in isolation ward, and are bolted high elastic rubber pipe, sealing at the top of isolation ward
Closed chamber inside steel plate and water stop rubber, isolation ward with outside attack solution is isolated；
9th step, injects attack solution：Water inlet valve at the top of closed chamber, injection testing attack solution are opened, and is pressurizeed, water
Solution pressure in pressure sensor monitoring closed chamber, until reaching the high hydraulic gradient of needs；
Tenth step, make-up solution pressure and pretightning force：Set when hydraulic pressure sensor monitors in closed chamber that solution pressure loss exceedes
Definite value, then inject attack solution, make-up solution pressure, if isolation room pressure, stress bolt pretightning force by water inlet valve
Loss exceed setting value open seal box water discharging valve, release attack solution, open closed chamber, with torque wrench adjust pressure,
Stress bolt supplements pretightning force to designated value, then seals, and refills attack solution and continues dissolved corrosion test.
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