CN204165872U - Testing permeability of concrete chloride ions device under pressure effect - Google Patents
Testing permeability of concrete chloride ions device under pressure effect Download PDFInfo
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- CN204165872U CN204165872U CN201420659378.8U CN201420659378U CN204165872U CN 204165872 U CN204165872 U CN 204165872U CN 201420659378 U CN201420659378 U CN 201420659378U CN 204165872 U CN204165872 U CN 204165872U
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Abstract
The utility model discloses testing permeability of concrete chloride ions device under a kind of pressure effect, it is characterized in that: this bottom of device is the steel plate base that corner is respectively provided with hole, described steel plate base connects four stretching screw rods by each hex bolts in its top and bottom, described steel plate base center is welded with steel cushion block, steel cushion block is placed the concrete test block of water of satisfying through vacuum; Upper cover plate center is welded with steel cushion block equally, and concrete is clipped in the middle by upper cover plate cushion block and base plate cushion block; Place the elastic polyurethane onesize with cover plate and pressing plate successively again above upper cover plate, steel plate base, upper cover plate, elastic polyurethane and pressing plate are all serially connected with four stretching screw rods.The utility model has the advantage of: simple to operate, tight a bolt after pressing machine applies pressure and namely complete the applying of load.Apparatus structure is simple, volume is little, conveniently moving.3. cost is low, and device materials are less, and overall cost is lower.
Description
Technical field
The utility model relates to concrete durability experiment technical field, is specifically related to testing permeability of concrete chloride ions device under a kind of pressure effect, and this device is applicable to the chloride ion permeability Changing Pattern of research concrete under different pressuring stress level effect.
Background technology
Xoncrete structure is a kind of version applied widely, but due to its material self and the feature of environment for use, xoncrete structure is made to there is serious endurance issues, this brings huge economic loss and financial burden to various countries, and chlorion is the main factor causing steel bar corrosion.At present, existing a lot of experts and scholars study for permeability of concrete chloride ions, but mainly concentrating on concrete does not apply stress or prestress and unload and carry out permeability test; But the concrete in Practical Project is all bearing load effect, and mainly bears pressure effect; Imposed load can have an impact to the change of inside concrete hole and the generation of micro-crack and change of shape, therefore can produce certain impact to concrete permeability.If agent on crack resistance of concrete perviousness can be studied and can not react concrete chloride ion permeability in Practical Project under just carrying out pressure-less state; There is partial fracture healing and closing of pores phenomenon in the concrete sample after unloading, with carry out testing permeability result under bearing load state can be different, so prestress unloads and carries out permeability test and also can not react permeability of concrete chloride ions in Practical Project.Therefore, under carrying out pressure effect, permeability of concrete chloride ions experimental study has higher practical value; For the permeability test having pressure effect, concrete must be made to keep stress constant in permeability test process.Therefore, study that a kind of load is constant, simple operation and the low lotus device of holding of cost just has its necessity.
Summary of the invention
The purpose of this utility model is to provide testing permeability of concrete chloride ions device under a kind of pressure effect, can solve concrete by permeability values during different pressuring stress level effect.
The technical solution of the utility model is: testing permeability of concrete chloride ions device under a kind of pressure effect, this bottom of device is the steel plate base that corner is respectively provided with hole, described steel plate base connects four stretching screw rods by each hex bolts in its top and bottom, described steel plate base center is welded with steel cushion block, steel cushion block is placed the concrete test block of water of satisfying through vacuum; Upper cover plate center is welded with steel cushion block equally, and concrete is clipped in the middle by upper cover plate cushion block and base plate cushion block; Place the elastic polyurethane onesize with cover plate and pressing plate successively again above upper cover plate, steel plate base, upper cover plate, elastic polyurethane and pressing plate are all serially connected with four stretching screw rods.Described every root stretching screw rod is fixed in steel plate base by being positioned at each hex bolts of steel plate base upper and lower surface.The special test flume organic glass in concrete test block both sides is made, and described permeability test groove is close to concrete test block surface by the O-ring seal of protuberate.Upper cover plate, elastic polyurethane and pressing plate freely up and down can slide along stretching screw rod.Be provided with automatic leveling ball pivot between hydraulic dynamometer and pressing plate, by automatic leveling ball pivot, pressure put on pressing plate.
Testing permeability of concrete chloride ions device under a kind of compressive stress, described device steel plate base corner place is respectively provided with a hole, and four stretching screw rods are fixed on steel plate base by each hex bolts in steel plate base top and bottom through hole.Sealing is kept for the ease of concrete test block and test flume, one piece of 105mm × 50mm × 50mm steel cushion block is respectively welded at steel plate base upper surface center and upper cover plate lower surface center, pressurized concrete test block is placed between two steel cushion blocks, elastic polyurethane is placed on upper cover plate, there is a block plate above elastic polyurethane as pressing plate, pressing plate has four hex bolts restriction pressing plates slide.When to concrete test block precharge, automatic leveling ball pivot is placed on pressing plate, and described automatic leveling ball pivot can overcome the impact that surface of contact injustice causes concrete local compression; Special permeability test groove, because ensureing sealing, can realize square shaped test block and carry out permeability test.
Principle is as follows: concrete test block is placed between the steel cushion block of steel plate base center and upper cover plate center weld.Pressure is put on pressing plate by self-level(l)ing ball pivot by hydraulic dynamometer, pressing plate carries out elastic compression to elastic polyurethane, stop pressurization when reading reaches scheduled pressure value on pressure transducer display screen but do not unload, by tightening four hex bolts above pressing plate until on sensor display screen reading be zero only; Pressure is put on concrete test block by upper cover plate because needs recover elastic deformation by polyurethane elastomeric materials, so just makes concrete test block be in continuous compression state.
The utility model has the advantage of: 1. simple to operate, tight a bolt after pressing machine applies pressure and namely complete the applying of load.2. apparatus structure is simple, volume is little, conveniently moving.3. cost is low, and device materials are less, and overall cost is lower.
Accompanying drawing explanation
Fig. 1 is the one-piece construction schematic diagram of concrete test block testing permeability device;
Fig. 2 is Fig. 1 side view;
Fig. 3 is self-level(l)ing ball pivot planimetric map;
Fig. 4 is self-level(l)ing ball pivot elevation drawing;
Fig. 5 is chloride permeability system safety testing device structural representation in the utility model;
Fig. 6 is Fig. 5 test flume elevation drawing;
Fig. 7 is Fig. 5 test flume side elevational view.
Wherein: 1 is that automatic leveling ball pivot dome is foxy, 2 is the recessed round and smooth groove of automatic leveling ball pivot, 3 are limited superzapping plate hex bolts, 4 is pressing plate, 5 is elastic polyurethane, 6 is upper cover plate, 7 is upper cover plate cushion block, 8 is permeability test groove, 9 is concrete test block, 10 is steel plate base cushion block, 11 is steel plate base, 12 is stretching screw rod, 13 is plate upper surface hex bolts, 14 is base plate lower surface hex bolts, 15 is permeability test wire, 16 is permeability test groove screw hole, 17 is permeability test groove liquid injection hole, 18 is permeability test groove electrode hole, 19 is permeability test groove O-ring seal.
Embodiment
The utility model is made up of compressive stress stabilising arrangement, self-level(l)ing device and chloride permeability system safety testing device 3 part, sets forth the utility model all parts, connected mode and effect thereof below in conjunction with accompanying drawing:
See Fig. 1 and Fig. 2, this device comprises steel plate base 11, stiffness bearer 10 and 7, stretching screw rod 12, upper cover plate 6, elastic polyurethane 5, pressing plate 4, the hex bolts 3,13 and 14 in Ge Sheyi hole, corner.Steel plate base 11 lower surface respectively welds a hex bolts 14 supporting with stretching screw rod 12 at four hole places, steel plate base 11 4 hole respectively penetrates a stretching screw rod 12, then screws in the hex bolts 14 of steel plate base 11 lower surface welding; When the placed side out-of-flatness of device institute, adjust by the length regulating stretching screw rod 12 to screw in base 11 lower surface hex bolts 14; In order to strengthen the stability of stretching screw rod 12, avoiding producing inclination in operation, also screwing in a hex bolts 13 at steel plate base upper surface every root stretching screw rod 12.Consider that permeability test groove 8 size is greater than concrete test block 9 size, can be close to concrete test block 9 to make test flume 8, therefore respectively welding a 105mm × 50mm × 50mm stiffness bearer 7 and 10 in steel plate base 11 upper surface center and upper cover plate 6 lower surface center, it is wide and slightly longer than concrete test block 9 with concrete test block 9; Pressurized concrete test block 9 is sandwiched between two cushion blocks 7 and 10.Upper cover plate 6 places elastic polyurethane 5 and pressing plate 4 above successively.Compressed by pressing plate 4 pairs of elastic polyurethanes 5 when applying pressure; Then, four hex bolts 3 above pressing plate 4 recover distortion by restriction pressing plate 4 upward sliding restriction elastic polyurethane 5.
See Fig. 3 and Fig. 4, self-level(l)ing device is made up of with the recessed round and smooth groove 2 in bottom top dome foxy 1, is closely connected between dome slippery fellow 1 with recessed round and smooth groove 2; During use, in recessed circular groove, brush a small amount of lubricating oil can be free to slide in recessed round and smooth groove 2 to make dome slippery fellow 1; When there being surface of contact out-of-flatness, dome foxy 1 just slides to adjust the impact contacting out-of-flatness and bring in recessed round and smooth groove 2.
See Fig. 5, Fig. 6 and Fig. 7, chloride permeability system safety testing device is made up of permeability test groove 8, testing permeability of concrete chloride ions instrument; Concrete test block 9 carries out testing permeability test after being applied pressure by compressive stress stabilising arrangement, and two permeability test grooves 8 are close to the face of the 100mm × 100mm of concrete test block 9 respectively; See Fig. 7, in order to ensure the sealing between concrete test block 9 and permeability test groove 8, described permeability test groove 8 is that the O-ring seal 19 by protruding its surface is direct and concrete test block 9 surface contact; Tighten the Screw arbor with nut at both-ends of permeability test groove 8, inject distilled water inspection sealing at permeability test groove liquid injection hole, extract distilled water out after water-tight, the NaCl solution being 3% by the NaOH solution of 0.3mol/L and massfraction injects anode slot and cathode can respectively.Permeability test groove connects osmolarity tester to be tested.
A typical test operation process is as follows:
The first step, building and maintenance of concrete test block: concrete test block is shaping in the standard die trial of 100mm × 100mm × 100mm, maintenance to regulation the length of time after, with standard concrete test cutting machine concrete test cube is cut into two 100mm × 50mm × 50mm test block.
Second step, is placed in above the cushion block of steel plate base by the concrete test block of water treatment of satisfying through vacuum, and down, cushion block is placed in above concrete test block upper cover plate welding cushion block one side.Successively elastic polyurethane and pressing plate are placed in above upper cover plate.Above hand-tight make-up pressing plate, four hex bolts, now tighten and can not too exert oneself, and concrete test block be made to be in unstress state.
3rd step, is placed on pressure transducer by ready for second step compressive stress device, and the self-level(l)ing ball pivot of brushing lubricating oil is placed in above pressing plate, starts hydraulic dynamometer after being ready to.
4th step, is slowly forced into reading on pressure transducer and only reaches predetermined pressure, now stop pressurization but do not unload; Diagonal crossed is carried out for tightening to four hex bolts on pressing plate, until reading only reduces to zero on pressure transducer display screen.
5th step, shifts out the compressive stress device after tightening from hydraulic dynamometer, now carries out permeability test, and two organic glass permeability test grooves cover respectively on the surface of concrete test block two 100mm × 100mm; In order to the sealing of Concrete Structure test block and permeability test groove, the Screw arbor with nut at both-ends of permeability test groove needs alternately to tighten.
6th step, solution injects permeability test groove, connects osmolarity tester and permeability test groove with wire; Osmolarity tester is connected with computer by data line.
7th step, starts testing permeability software, starts test.
Claims (7)
1. testing permeability of concrete chloride ions device under a pressure effect, it is characterized in that: this bottom of device is the steel plate base that corner is respectively provided with hole, described steel plate base connects four stretching screw rods by each hex bolts in its top and bottom, described steel plate base center is welded with steel cushion block, steel cushion block is placed the concrete test block of water of satisfying through vacuum; Upper cover plate center is welded with steel cushion block equally, and concrete is clipped in the middle by upper cover plate cushion block and base plate cushion block; Place the elastic polyurethane onesize with cover plate and pressing plate successively again above upper cover plate, steel plate base, upper cover plate, elastic polyurethane and pressing plate are all serially connected with four stretching screw rods.
2. testing permeability of concrete chloride ions device under pressure effect according to claim 1, is characterized in that: described every root stretching screw rod is fixed in steel plate base by being positioned at each hex bolts of steel plate base upper and lower surface.
3. testing permeability of concrete chloride ions device under pressure effect according to claim 1, it is characterized in that: the special test flume organic glass in concrete test block both sides is made, described permeability test groove is close to concrete test block surface by the O-ring seal of protuberate.
4. testing permeability of concrete chloride ions device under pressure effect according to claim 1, is characterized in that: upper cover plate, elastic polyurethane and pressing plate freely up and down can slide along stretching screw rod.
5. testing permeability of concrete chloride ions device under pressure effect according to claim 1, be is characterized in that: be provided with automatic leveling ball pivot between hydraulic dynamometer and pressing plate, is put on pressing plate by pressure by automatic leveling ball pivot.
6. testing permeability of concrete chloride ions device under pressure effect according to claim 1, is characterized in that: steel cushion block is of a size of 105mm × 50mm × 50mm.
7. testing permeability of concrete chloride ions device under pressure effect according to claim 1, is characterized in that: concrete test block is of a size of 50mm × 100mm × 100mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420659378.8U CN204165872U (en) | 2014-11-06 | 2014-11-06 | Testing permeability of concrete chloride ions device under pressure effect |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420659378.8U CN204165872U (en) | 2014-11-06 | 2014-11-06 | Testing permeability of concrete chloride ions device under pressure effect |
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| CN204165872U true CN204165872U (en) | 2015-02-18 |
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| CN201420659378.8U Expired - Fee Related CN204165872U (en) | 2014-11-06 | 2014-11-06 | Testing permeability of concrete chloride ions device under pressure effect |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107322763A (en) * | 2017-08-25 | 2017-11-07 | 济南四建（集团）有限责任公司 | A kind of pervious concrete compression strength test shaped device and forming method |
| CN109632607A (en) * | 2019-01-16 | 2019-04-16 | 长沙理工大学 | Twin shaft continues the chlorine ion binding capacity experimental rig and measuring method of concrete under ballast |
| CN111366522A (en) * | 2020-04-20 | 2020-07-03 | 苏交科集团股份有限公司 | Test collection system of concrete gas permeability data |
| CN115078104A (en) * | 2022-05-19 | 2022-09-20 | 浙江工业大学 | Chloride ion permeation detection device and method capable of controlling tensile strain of engineering cement-based composite material |
-
2014
- 2014-11-06 CN CN201420659378.8U patent/CN204165872U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107322763A (en) * | 2017-08-25 | 2017-11-07 | 济南四建（集团）有限责任公司 | A kind of pervious concrete compression strength test shaped device and forming method |
| CN107322763B (en) * | 2017-08-25 | 2023-06-20 | 济南四建（集团）有限责任公司 | Permeable concrete compressive strength test piece forming device and forming method |
| CN109632607A (en) * | 2019-01-16 | 2019-04-16 | 长沙理工大学 | Twin shaft continues the chlorine ion binding capacity experimental rig and measuring method of concrete under ballast |
| CN111366522A (en) * | 2020-04-20 | 2020-07-03 | 苏交科集团股份有限公司 | Test collection system of concrete gas permeability data |
| CN111366522B (en) * | 2020-04-20 | 2020-10-30 | 苏交科集团股份有限公司 | Test collection system of concrete gas permeability data |
| CN115078104A (en) * | 2022-05-19 | 2022-09-20 | 浙江工业大学 | Chloride ion permeation detection device and method capable of controlling tensile strain of engineering cement-based composite material |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150218 Termination date: 20161106 |