CN203534877U - Mould for preparing test piece for tensile test of concrete - Google Patents
Mould for preparing test piece for tensile test of concrete Download PDFInfo
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- CN203534877U CN203534877U CN201320650816.XU CN201320650816U CN203534877U CN 203534877 U CN203534877 U CN 203534877U CN 201320650816 U CN201320650816 U CN 201320650816U CN 203534877 U CN203534877 U CN 203534877U
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Abstract
The utility model discloses a mould for preparing a test piece for a tensile test of concrete. The mould comprises a bottom plate which is a rectangular plate body, wherein side plates are arranged on the two sides of the bottom plate, the middle of each side plate is recessed to the inner side, the cross section of a recess is in an isosceles trapezoid structure without lower bottom, an isosceles trapezoid plate is arranged at the bottom end of the recess of the side plate and matched with the recess of the side plate in shape, the side plates are fixedly connected with the isosceles trapezoid plates through a plurality of triangular plates, and the side plates, the isosceles trapezoid plates and the triangular plates are perpendicular to one another in pairs; the bottom plate, the side plates on the two sides and baffles at the two ends define a wing-shaped cavity which is wide at two ends and narrow and long in the middle. The stress distribution is uniform when an axial tensile strength and ultimate tensile test of the concrete is performed after the test piece prepared by the mould provided by the utility model is clamped by a flexible clamping device, and an obtained result is accurate and reliable.
Description
Technical field
The utility model relates to concrete axle center tensile strength and ultimate elongation experimental technique field, is specially a kind of mould that can prepare wing termination test specimen.
Background technology
According to industry standard DL/T5150-2001 < < concrete for hydraulic structure testing regulations > > 4.4, require concrete to carry out concrete axle center tensile strength and ultimate elongation test, conventional test specimen method of clamping is respectively that prism test specimen buries bar connection clamping and the termination clamping of prism test specimen etc. at present.Adopt these several method of clamping that the fracture of test specimen termination often occurs in test findings, this is because concrete is a kind of hard brittle material, and it is concentrated and can not as metal material, by part, be produced compared with large distortion and be reduced stress localization effects for local stress.Once thereby certain on test specimen a bit produces stress and concentrate, will cause concrete at this cracking destruction.And existing these test methods are owing to not considering concrete this characteristic, making concrete sample is to concentrate and destroy due to local stress, and not the single tension that is only subject to of testing requirements is destroyed, and measured test result is not accurate enough.
Summary of the invention
Technical problem to be solved in the utility model is to provide a kind of mould of test specimen for Analysis of Concrete Tensile test of preparing, its wing test specimen termination of preparing is after employing flexible holding device clamps, while carrying out concrete axle center tensile strength and ultimate elongation experimental test, stress distribution is even, and acquired results accurately and reliably.
For solving the problems of the technologies described above, the technical scheme that the utility model adopts is: a kind of Analysis of Concrete Tensile of preparing is tested the mould with test specimen, comprise base plate, described base plate is rectangle plate body, the both sides of base plate are provided with side plate, cave in to the inside in the middle part of side plate, the cross section of recess is an isosceles trapezoidal structure of not going to the bottom, the recess bottom of side plate is provided with equicrural ladder plate, the shape of trapezoidal plate matches with the shape at depressed side board place, side plate is fixedly connected with by a plurality of set squares with equicrural ladder plate, its latus inframedium, equicrural ladder plate, set square is vertical between two, this mould surrounds wide, the middle long narrow wing cavity in two ends by the side plate of base plate, both sides and the baffle plate at two ends.
The two ends of described base plate, side plate are equipped with the draw-in groove matching with Weir Plate Thickness, and baffle plate is arranged on the two ends of base plate by draw-in groove.
Described side plate is connected to base plate by equicrural ladder plate, between equicrural ladder plate and base plate, is bolted.
Test specimen prepared by the mould that adopts the utility model to provide, coordinate again Analysis of Concrete Tensile test flexible holding device to clamp, when test specimen prepared by this mould clamps, at its two ends, flexible holding device is all installed, can make holding force be uniformly distributed at clamping surface, reduce the concentrated phenomenon of stress, improve the accuracy of test.Described flexible holding device comprises retained part and coupling part, is also provided with the wedged plate with test specimen laminating to be held within described retained part comprises holding tank for clamping test pieces, holding tank, between holding tank and wedged plate, is provided with cushion block; Described coupling part is connected on holding tank.Described wedged plate adopts spring steel material to make, and the effect of wedged plate is in tension test process, to rely on its distortion size to reduce gradually concrete suffered stress.Described cushion block adopts polytetrafluoroethylmaterial material to make.Because teflon soft or hard degree is suitable, in device, play elastic reaction, the elastic deformation of cushion block has reduced the suffered stress in concrete sample test specimen termination in tension test and has concentrated.
The wing concrete sample that the mould providing by the utility model is produced, then carry out concrete tensile strength and ultimate elongation test after coordinating flexible holding device clamping, can guarantee that the data that record are more accurate.
The test specimen that adopts the utility model to prepare, when carrying out tension test, concentrates because reduced stress, and position, termination just can not occur test specimen destroys, but failure position occurs in middle part, can effectively improve test efficiency, saving resource.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the utility model is described in further detail:
Fig. 1 is vertical view of the present utility model.
Fig. 2 is the utility model structure partial detail drawing base plate.
Fig. 3 is the utility model structure partial view side plate.
Fig. 4 is the utility model structure partial view baffle plate.
Embodiment
As Figure 1-Figure 4, the utility model comprises base plate 1, described base plate is rectangle plate body, the both sides of base plate 1 are provided with side plate 2, cave in to the inside in the middle part of side plate 2, and the cross section of recess is an isosceles trapezoidal structure of not going to the bottom, the recess bottom of side plate is provided with equicrural ladder plate 4, the shape of trapezoidal plate 4 matches with the shape at depressed side board place, and side plate 2 is fixedly connected with by a plurality of set squares 5 with equicrural ladder plate 4, and its latus inframedium 2, equicrural ladder plate 4, set square 5 are vertical between two; This mould surrounds wide, the middle long narrow wing cavity in two ends by the side plate 2 of base plate 1, both sides and the baffle plate 3 at two ends.
The two ends of described base plate 1, side plate 2 are equipped with the draw-in groove matching with baffle plate 3 thickness, and baffle plate 3 is arranged on the two ends of base plate by draw-in groove.
Described side plate is connected to base plate 1 by equicrural ladder plate 4, between equicrural ladder plate 4 and base plate 1, is bolted.
The device preparation providing by the utility model before carrying out tension test is applicable to the wing test specimen of flexible holding device, first side plate 2 and baffle plate 3 will be arranged on base plate 1 successively, and with bolt, trapezoidal plate 4 is fixing with base plate 1.The thin oil of one deck is smeared in two short wide, middle long narrow wing cavity inner wall and the bottoms that this device surrounded with machine oil.Wing cavity inner engine oil is closely knit with the Concrete Filled preparing after smearing evenly, be put into and under suitable environmental baseline, make its concrete setting maintenance, when concrete final set, with spanner, take off the side plate of this device and the bolt of base plate, take successively side plate and baffle plate apart, the wing concrete sample that takes out moulding, when wing concrete sample maintenance is to after date, carries out ultimate elongation test with flexible holding device to concrete sample.Thereby detect the concrete test findings of this preparation.
Claims (3)
1. prepare the mould of test specimen for Analysis of Concrete Tensile test for one kind, it is characterized in that: comprise base plate (1), described base plate is rectangle plate body, the both sides of base plate (1) are provided with side plate (2), cave in to the inside in the middle part of side plate (2), the cross section of recess is an isosceles trapezoidal structure of not going to the bottom, the recess bottom of side plate is provided with equicrural ladder plate (4), the shape of trapezoidal plate (4) matches with the shape at depressed side board place, side plate (2) is fixedly connected with by a plurality of set squares (5) with equicrural ladder plate (4), its latus inframedium (2), equicrural ladder plate (4), set square (5) is vertical between two, this mould surrounds wide, the middle long narrow wing cavity in two ends by the side plate (2) of base plate (1), both sides and the baffle plate (3) at two ends.
2. the Analysis of Concrete Tensile of preparing according to claim 1 is tested the mould with test specimen, it is characterized in that: the two ends of described base plate (1), side plate (2) are equipped with the draw-in groove matching with baffle plate (3) thickness, and baffle plate (3) is arranged on the two ends of base plate by draw-in groove.
3. the Analysis of Concrete Tensile of preparing according to claim 1 is tested the mould with test specimen, it is characterized in that: described side plate is connected to base plate (1) by equicrural ladder plate (4), between equicrural ladder plate (4) and base plate (1), is bolted.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320650816.XU CN203534877U (en) | 2013-10-22 | 2013-10-22 | Mould for preparing test piece for tensile test of concrete |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320650816.XU CN203534877U (en) | 2013-10-22 | 2013-10-22 | Mould for preparing test piece for tensile test of concrete |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203534877U true CN203534877U (en) | 2014-04-09 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320650816.XU Expired - Fee Related CN203534877U (en) | 2013-10-22 | 2013-10-22 | Mould for preparing test piece for tensile test of concrete |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203534877U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104006995A (en) * | 2014-05-29 | 2014-08-27 | 扬州大学 | Fiber neat paste test piece forming method for scanning microscope |
| CN104236964A (en) * | 2013-06-08 | 2014-12-24 | 青岛理工大学 | Mold for concrete axial tension test piece and rod piece pre-embedding method by using the mold |
| CN106018044A (en) * | 2016-08-12 | 2016-10-12 | 郑州大学 | Test piece of concrete direct tensile test, test piece forming die and integrated equipment |
| CN109632440A (en) * | 2018-12-10 | 2019-04-16 | 九牧厨卫股份有限公司 | A kind of test wet base of mud goes out green body, casting mold and the method for fragility energy |
-
2013
- 2013-10-22 CN CN201320650816.XU patent/CN203534877U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104236964A (en) * | 2013-06-08 | 2014-12-24 | 青岛理工大学 | Mold for concrete axial tension test piece and rod piece pre-embedding method by using the mold |
| CN104236964B (en) * | 2013-06-08 | 2016-08-17 | 青岛理工大学 | Concrete axial is to tensile test specimen mould and the rod member built-in process that uses this mould |
| CN104006995A (en) * | 2014-05-29 | 2014-08-27 | 扬州大学 | Fiber neat paste test piece forming method for scanning microscope |
| CN106018044A (en) * | 2016-08-12 | 2016-10-12 | 郑州大学 | Test piece of concrete direct tensile test, test piece forming die and integrated equipment |
| CN106018044B (en) * | 2016-08-12 | 2018-11-02 | 郑州大学 | Concrete direct tensile test test specimen, specimen molding mold and complexes |
| CN109632440A (en) * | 2018-12-10 | 2019-04-16 | 九牧厨卫股份有限公司 | A kind of test wet base of mud goes out green body, casting mold and the method for fragility energy |
| CN109632440B (en) * | 2018-12-10 | 2021-06-22 | 九牧厨卫股份有限公司 | Blank body, casting mold and method for testing wet slurry blank cracking performance |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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: 20140409 Termination date: 20171022 |