CN110530722A - High ductility cement-based material is uniaxially stretched mold and test specimen preparation method and test method - Google Patents
High ductility cement-based material is uniaxially stretched mold and test specimen preparation method and test method Download PDFInfo
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- CN110530722A CN110530722A CN201910976514.3A CN201910976514A CN110530722A CN 110530722 A CN110530722 A CN 110530722A CN 201910976514 A CN201910976514 A CN 201910976514A CN 110530722 A CN110530722 A CN 110530722A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/286—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q involving mechanical work, e.g. chopping, disintegrating, compacting, homogenising
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- 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
- G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
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- 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
- G01N2203/0001—Type of application of the stress
- G01N2203/0003—Steady
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- 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
- G01N2203/0014—Type of force applied
- G01N2203/0016—Tensile or compressive
- G01N2203/0017—Tensile
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- 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
- G01N2203/0058—Kind of property studied
- G01N2203/006—Crack, flaws, fracture or rupture
- G01N2203/0067—Fracture or rupture
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- 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
- G01N2203/026—Specifications of the specimen
- G01N2203/0262—Shape of the specimen
- G01N2203/0268—Dumb-bell specimens
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Abstract
The invention discloses high ductility cement-based materials to be uniaxially stretched mold and test specimen preparation method and test method, and the mold includes bottom plate, lower testing mould component, lower frame, pilot scale membrane module, upper frame, upper testing mould component, the first fiber and the second fiber；Structure is consistent after the lower testing mould component, pilot scale membrane module and upper testing mould parts assembling and internal cavities form multiple test specimen regions in dumbbell shaped, is fixed on bottom plate by screw；The lower frame and upper frame are fixed on bottom plate by screw；First fiber and the second fiber aspect are uniformly arranged on test specimen peak width narrow part；The test specimen preparation method includes casting and demoulding process, and the dumbbell shaped test specimen that the first fiber and the second fiber are encrypted at variable cross-section is made.Inventive die realizes multiple test specimens of disposably casting, and assembling and demoulding are convenient；The fiber being evenly arranged in length and breadth improves the tensile strength of test specimen to reinforcement at test specimen variable cross-section, is conducive to the strain-Temperature measurement for evaluating high ductility cement-based material.
Description
Technical field
The present invention relates to the Mechanics Performance Testing fields of high ductility cement-based material, and in particular to a kind of high ductility cement base
Material single shaft drawing die and test specimen production method and test method.
Background technique
High ductility cement-based material ECC is a kind of special high performance fiber reinforced cement based composites.ECC material is based on disconnected
It splits mechanics and Micromechanics theory is designed, using adjustment fiber, matrix and the means such as fiber and the interface performance of matrix
To promote the mechanical property of ECC.Under flecition, ECC material shows the deformability of superelevation, answering with metalloid
Change-Temperature measurement.
Strain-the Temperature measurement for studying ECC material, mostly uses uniaxial tensile test and bending test.It is uniaxially stretched
When test, concentrated since traditional thin plate tensile test specimen is easy to appear stress in the position close to collet, so that ECC test specimen is at this
There is destructive crack in advance in place, cannot show strain hardening characteristics and the multiple crack growth behavior of ECC material well.
For this purpose, many scholars carry out the uniaxial tensile test of ECC material using " dumbbell shape " or " dog bone shape " test specimen, " dumbbell shape " or
The width of " dog bone shape " test specimen has a gentle transition region, can avoid the occurrence of stress concentration well.
But as shown in Figure 1, at " dumbbell shape " or " dog bone shape " specimen width variation, due to interfacial area changes and
There are stress concentration phenomenon in drawing process, there is the cracking phenomena in advance for influencing test result, ECC material single shaft is easily caused to draw
It stretches stress and strain in test and is less than actual value, influence strain-Temperature measurement evaluation of ECC material.
Summary of the invention
Goal of the invention: the present invention proposes that a kind of high ductility cement-based material is uniaxially stretched mold, is able to solve high ductility water
Cement-based material is uniaxially stretched mechanics benchmark problem under state；
Second object of the present invention is to propose a kind of method based on above-mentioned Mold Making test specimen；
Third object of the present invention is to propose a kind of test method based on test specimen obtained by above-mentioned mold.
Technical solution: a kind of high ductility cement-based material of the invention is uniaxially stretched mold, including bottom plate, lower testing mould group
Part, lower frame, pilot scale membrane module, upper frame and upper testing mould component；The lower testing mould component, pilot scale membrane module and upper testing mould component
Structure is consistent after assembly and internal cavities form the identical test specimen region in dumbbell shaped of multiple shapes, and is fixed by screws in
On bottom plate；Four angles of the lower frame and upper frame are fixed by screws on bottom plate；First fiber and the second fiber
It is placed between lower testing mould component and pilot scale membrane module, pilot scale membrane module and upper testing mould component, and intersects and be uniformly arranged on test specimen
Peak width narrow part.
Wherein, first fiber is perpendicular at second change width in test specimen zone length direction and uniformly distributed.
Wherein, second fiber is vertically overlapped on the first fiber in test specimen region and uniformly distributed, length and
The laying of first fiber is of same size.
Wherein, the lower testing mould component includes flank lower module, middle part lower module and edge lower module, is connected by screw to
It is fixed；The pilot scale membrane module includes module in flank, module in module and edge in middle part, is connected by screw to fixation；Institute
Stating upper testing mould component includes flank upper module, middle part upper module and edge upper module, is connected by screw to fixation.
Wherein, the flank lower module, middle part lower module, edge lower module, module in flank, module, edge in middle part
Middle module, flank upper module, middle part upper module, edge upper module, lower frame are identical with the thickness of upper frame.
The method for being uniaxially stretched Mold Making test specimen using above-mentioned high ductility cement-based material, including casting process and demoulding
The dumbbell shape test specimen that the first fiber and the second fiber are encrypted at variable cross-section is made in process；
The casting process includes the following steps:
(a) assembled lower testing mould component is placed on bottom plate, by lower testing mould component screw hole and bottom plate screw hole to just；
(b) position that the first fiber and the second fiber are determined on lower frame, fixes the first fiber and the second fiber, the
The laying of two fibre lengths and the first fiber is of same size, then lower frame is placed on bottom plate, by lower frame screw hole and bottom plate spiral shell
Hole is to just；
(c) step (a) and (b) are repeated, successively assembled pilot scale membrane module, fix the first fiber and the second fiber in upper ledge
The position of frame and assembled upper testing mould component, then pilot scale membrane module, upper frame and upper testing mould component are placed sequentially on bottom plate, and
Bottom plate screw hole is to just；
(d) by the four of four angles and lower testing mould component, pilot scale membrane module and upper testing mould component of lower frame and upper frame
A angle is fixed by screws on bottom plate respectively；
(e) the test specimen area side of the dumbbell shaped formed after lower testing mould component, pilot scale membrane module and upper testing mould parts assembling
Wall and ground oiling pour into high ductility cement-based material in slot, mold are placed on plain bumper, and swing die makes high ductility water
Cement-based material is closely knit, concordant at the top of upper testing mould component at the top of high ductility cement-based material, completes test specimen and pours；
The demoulding process the following steps are included:
(f) by the test specimen cast together with mold specified humidity and at a temperature of maintenance after, release upper testing mould component, pilot scale
The attachment screw of membrane module, lower testing mould component and bottom plate；
(g) fixing screws for releasing upper testing mould component, remove upper testing mould component；
(h) the first fiber is cut along each test specimen side, the attachment screw of frame, lower frame and bottom plate in releasing, in dismounting
Frame；
(i) fixing screws for releasing pilot scale membrane module, remove pilot scale membrane module；
(g) the first fiber is cut along each test specimen side, removes lower frame；
(k) fixing screws for releasing lower testing mould component, remove lower testing mould component.
Wherein, assembled lower testing mould component is by flank lower module, middle part lower module and side in the casting process step (a)
Subordinate's module is connected by screw to fixation；In the casting process step (c) assembled pilot scale membrane module be by module in flank, in
Module is connected by screw to fixation in module and edge in portion；Assembled upper testing mould component is by flank upper module, middle part upper module
Fixation is connected by screw to edge upper module.
Wherein, upper testing mould component, pilot scale membrane module, lower testing mould component and bottom plate are released in the demoulding process step (f)
Attachment screw, be release flank upper module, in flank module and flank lower module and bottom plate attachment screw；The demoulding stream
The fixing screws that upper testing mould component is released in journey step (g) are to release flank upper module, middle part upper module and edge upper module
Fixing screws；The fixing screws that pilot scale membrane module is released in the demoulding process step (i) are to release module in flank, in middle part
The fixing screws of module in module and edge；The fixing screws that lower testing mould component is released in the demoulding process step (k) are solutions
Except the fixing screws of flank lower module, middle part lower module and edge lower module.
What test specimen obtained by the method for Mold Making test specimen was tested is uniaxially stretched to above-mentioned high ductility cement-based material
Dumbbell shape test specimen is placed in and is uniaxially stretched in fixture, penetrates screw rod by method, is bonded dumbbell shape test specimen tightly with fixture is uniaxially stretched
It is close, it is uniaxially stretched fixture and is fixedly clamped with test equipment collet；Start to load using displacement Loading Method, until dumbbell shape test specimen is disconnected
Bearing capacity is split or lost, test is completed.
Specifically, the method that high ductility cement-based material of the invention is uniaxially stretched test piece mould and makes test specimen uses
Flank module, intermediate module and edge module be assemblied to form multiple groups have upper, middle and lower structure die trial component, by with side
Uniformly distributed fiber realizes the local reinforcement of test specimen in length and breadth on two frames up and down of wing module equal thickness, is not likely to produce stress
Concentration phenomenon improves the tensile strength at test specimen variable cross-section, guarantees that test specimen is opened under the state that is uniaxially stretched from intermediate weak part
Split destruction.
The utility model has the advantages that the invention has the following advantages that (1) inventive die realizes multiple test specimens of disposably casting, mould
Tool assembling and demoulding are convenient；(2) present invention is improved using the fiber being evenly arranged in length and breadth to reinforcement is carried out at test specimen variable cross-section
The tensile strength of test specimen guarantees that test specimen, from intermediate weak part cracking destruction, is conducive to high ductility under the state that is uniaxially stretched
Strain-Temperature measurement of cement-based material is evaluated；(3) structure of the invention is simple, easy to operate.
Detailed description of the invention
Fig. 1 is the cracking form schematic diagram under test specimen is uniaxially stretched in the prior art；
Fig. 2 is schematic diagram before inventive die assembles；
Fig. 3 is schematic diagram after inventive die assembling；
Fig. 4 is test specimen schematic diagram of the present invention；
Fig. 5 is test specimen test process schematic diagram of the present invention.
Specific embodiment
Further description of the technical solution of the present invention with reference to the accompanying drawings and examples.
As shown in Figures 2 and 3, a kind of high ductility cement-based material is uniaxially stretched test piece mould, including bottom plate 1, lower testing mould
Component 2, lower frame 3, pilot scale membrane module 4, upper frame 5, upper testing mould component 6, the first fiber 11 and the second fiber 12；Lower testing mould group
Structure is consistent after part 2, pilot scale membrane module 4 and 6 assembly of upper testing mould component and internal cavities to form multiple shapes identical in dumbbell
The test specimen region of shape, and be fixed by screws on bottom plate 1；Four angles of lower frame 3 and upper frame 5 are fixed by screws in bottom
On plate 1；First fiber 11 and the second fiber 12 are placed in lower testing mould component 2 and pilot scale membrane module 4, pilot scale membrane module 4 and upper examination
Between membrane module 6, and it is uniformly arranged on the transition position to narrow among test specimen peak width in length and breadth.Wherein, lower testing mould component 2, in
Die trial component 4 and upper testing mould component 6 are formed by two flank modules, bicycle middle module, two edge module assembleds respectively, wherein in
The quantity of portion's module can determines according to actual conditions, and the bicycle middle module that the present embodiment uses is two.Flank module side, in
Portion module side and edge module are reserved with corresponding screw hole, are fixedly connected by eight screws.
Specifically, lower testing mould component 2 is by two flank lower modules, 21, two middle part lower modules 22 and two edge lower modules
23 assemble, and pilot scale membrane module 4 is by two flanks in the middle part of module 41, two 43 groups of module in module 42 and two edge
Fill, upper testing mould component 6 by two flank upper modules, 61, two middle part upper modules 62 and two assemblings of edge upper modules 63 and
At.Wherein, flank lower module 21, module 41 and 61 both ends of flank upper module are reserved with the corresponding screw hole of same bottom plate 1 in flank,
It is fixed by four screws and bottom plate 1；Four angles of lower frame 3 and upper frame 5 are reserved with screw hole corresponding with bottom plate 1, lead to
It crosses four screws and bottom plate 1 is fixed；Wherein flank lower module 21, middle part lower module 22, edge lower module 23, module in flank
41, module 42 in middle part, module 43, flank upper module 61, middle part upper module 62, edge upper module 63,3 and of lower frame in edge
The thickness of upper frame 5 is identical.First fiber 11 is perpendicular at second change width in test specimen zone length direction and uniform cloth
If the present embodiment is arranged 3；Second fiber 12 be vertically overlapped on it is on the first fiber 11 in test specimen region and uniformly distributed,
The laying of length and the first fiber 11 is of same size, and the present embodiment is arranged 3.
The method for being uniaxially stretched Mold Making test specimen using the high ductility cement-based material stated, including casting process and demoulding
The dumbbell shape test specimen 13 that the first fiber 11 and the second fiber 12 are encrypted at variable cross-section is made in process；The wherein casting process packet
Include following steps:
(a) flank lower module 21, middle part lower module 22 and edge lower module 23 are assembled into lower testing mould by screw fixation
Component 2 is placed on bottom plate 1, by 2 screw hole of lower testing mould component and 1 screw hole of bottom plate to just；
(b) the first fiber 11, is first pasted onto down by the position that the first fiber 11 and the second fiber 12 are determined on lower frame 3
On frame 3, then vertically overlap joint is pasted on the first fiber 11 by the second fiber 12, guarantee its length just with the first fiber 11
It lays of same size, then lower frame 3 is placed on bottom plate 1, by 3 screw hole of lower frame and 1 screw hole of bottom plate to just；
(c) step (a) and (b) are repeated, successively passes through module 43 in module 42 in module 41 in flank, middle part and edge
Screw fixation is assembled into pilot scale membrane module 4, and flank upper module 61, middle part upper module 62 and edge upper module 63 are consolidated by screw
Surely it is assembled into upper testing mould component 6, stickup fixes the first fiber 11 and the second fiber 12 in the position of upper frame 5, then by pilot scale
Membrane module 4, upper frame 5 and upper testing mould component 6 are placed sequentially on bottom plate 1 and 1 screw hole of bottom plate is to just；
(d) by four angles and lower testing mould component 2, pilot scale membrane module 4 and upper testing mould component of lower frame 3 and upper frame 5
6 four angles are fixed by screws in respectively on bottom plate 1；
(e) the test specimen region of the dumbbell shaped formed after 6 assembly of lower testing mould component 2, pilot scale membrane module 4 and upper testing mould component
Side wall and ground oiling pour into high ductility cement-based material in slot, mold are placed on plain bumper, and swing die makes high ductility
Cement-based material is closely knit, concordant with 6 top of upper testing mould component at the top of high ductility cement-based material, completes test specimen and pours；At this time
The part that one fiber 11 is not wrapped up by cement-based material is leaked outside test specimen, and the second fiber 12 is then wrapped up by cement-based material completely
In test specimen.
The demoulding process the following steps are included:
(f) by the test specimen cast together with mold specified humidity and at a temperature of maintenance after, release flank upper module 61, side
The attachment screw of module 41 and flank lower module 21 and bottom plate 1 in the wing, that is, release upper testing mould component 6, pilot scale membrane module 4,
The connection of lower testing mould component 2 and bottom plate 1；
(g) fixing screws for releasing flank upper module 61, middle part upper module 62 and edge upper module 63, remove upper testing mould group
Part 6；
(h) the first fiber 11 is cut along each test specimen side, the attachment screw of frame 5, lower frame 3 and bottom plate 1, tears open in releasing
Except upper frame 5；
(i) release module 41 in flank, in middle part in module 42 and edge module 43 fixing screws, die trial group in dismounting
Part 4；
(g) the first fiber 11 is cut along each test specimen side, removes lower frame 3；
(k) fixing screws for releasing flank lower module 21, middle part lower module 22 and edge lower module 23, remove lower testing mould group
Part 2.
This mold can design suitable sample dimensions according to actual needs, as shown in figure 4, examination prepared by the present embodiment
The size in part dimensions length direction is respectively both ends 85mm, length of transition zone is 40mm at variable cross-section, and most narrow director's degree is 80mm；
Width direction most width is 60mm, and most narrow is 30mm；With a thickness of 13mm.Test specimen obtained by the above method is tested, such as Fig. 5 institute
Show, dumbbell shape test specimen 13 is placed in and is uniaxially stretched in fixture 14, screw rod is penetrated, make dumbbell shape test specimen 13 and is uniaxially stretched fixture 14
Fitting is close, is uniaxially stretched fixture 14 and is fixedly clamped with test equipment collet 15；Start to load using displacement Loading Method, until mute
Bell type test specimen 13 is broken or loses bearing capacity, completes test.
Claims (8)
1. a kind of high ductility cement-based material is uniaxially stretched mold, it is characterised in that: including bottom plate (1), lower testing mould component (2),
Lower frame (3), pilot scale membrane module (4), upper frame (5), upper testing mould component (6), the first fiber (11) and the second fiber (12)；Institute
State lower testing mould component (2), pilot scale membrane module (4) and upper testing mould component (6) it is assembled after structure is consistent and internal cavities formed it is multiple
The identical test specimen region in dumbbell shaped of shape, and be fixed by screws on bottom plate (1)；The lower frame (3) and upper frame
(5) four angles are fixed by screws on bottom plate (1)；First fiber (11) and the second fiber (12) are placed in lower testing mould
Between component (2) and pilot scale membrane module (4), pilot scale membrane module (4) and upper testing mould component (6), and it is uniformly arranged on test specimen in length and breadth
Peak width narrow part.
2. a kind of high ductility cement-based material according to claim 1 is uniaxially stretched mold, it is characterised in that: described first
Fiber (11) is perpendicular at second change width in test specimen zone length direction and uniformly distributed.
3. a kind of high ductility cement-based material according to claim 1 is uniaxially stretched mold, it is characterised in that: described second
Fiber (12) be vertically overlapped on it is on the first fiber (11) in test specimen region and uniformly distributed, length and the first fiber (11)
It lays of same size.
4. a kind of high ductility cement-based material according to claim 1 is uniaxially stretched mold, it is characterised in that: the lower examination
Membrane module (2) includes flank lower module (21), middle part lower module (22) and edge lower module (23), is connected by screw to fixation；
The pilot scale membrane module (4) includes module in flank (41), module (43) in module (42) and edge in middle part, is connected by screw
Connect fixation；The upper testing mould component (6) includes flank upper module (61), middle part upper module (62) and edge upper module (63), is led to
Screw is crossed to be connected and fixed.
5. a kind of high ductility cement-based material according to claim 4 is uniaxially stretched mold, it is characterised in that: the flank
Lower module (21), middle part lower module (22), edge lower module (23), module (41) in flank, module (42) in middle part, in edge
Module (43), flank upper module (61), middle part upper module (62), edge upper module (63), lower frame (3) and upper frame (5)
Thickness is identical.
6. a kind of method for being uniaxially stretched Mold Making test specimen using high ductility cement-based material described in claim 1, special
Sign is: the dumbbell that the first fiber (11) and the second fiber (12) are encrypted at variable cross-section being made including casting process and demoulding process
Type test specimen (13)；
The casting process includes the following steps:
(a) assembled lower testing mould component (2) is placed on bottom plate (1), by lower testing mould component (2) screw hole and bottom plate (1) screw hole to just；
(b) on lower frame (3) determine the first fiber (11) and the second fiber (12) position, fix the first fiber (11) and
The laying of second fiber (12), the second fiber (12) length and the first fiber (11) is of same size, then lower frame (3) is placed in bottom
On plate (1), by lower frame (3) screw hole and bottom plate (1) screw hole to just；
(c) step (a) and (b) are repeated, successively assembled pilot scale membrane module (4), fix the first fiber (11) and the second fiber
(12) in the position of upper frame (5) and assembled upper testing mould component (6), then by pilot scale membrane module (4), upper frame (5) and upper testing mould
Component (6) is placed sequentially on bottom plate (1) and bottom plate (1) screw hole is to just；
(d) by lower frame (3) and four angles and lower testing mould component (2) of upper frame (5), pilot scale membrane module (4) and upper testing mould
Four angles of component (6) are fixed by screws in respectively on bottom plate (1)；
(e) the test specimen area of the dumbbell shaped formed after lower testing mould component (2), pilot scale membrane module (4) and upper testing mould component (6) are assembled
Domain side wall and ground oiling pour into high ductility cement-based material in slot, mold are placed on plain bumper, swing die makes Gao Yan
Property cement-based material it is closely knit, concordant at the top of upper testing mould component (6) at the top of high ductility cement-based material, completion test specimen pours；
The demoulding process the following steps are included:
(f) by the test specimen cast together with mold specified humidity and at a temperature of maintenance after, release upper testing mould component (6), pilot scale
The attachment screw of membrane module (4), lower testing mould component (2) and bottom plate (1)；
(g) fixing screws for releasing upper testing mould component (6), are removed upper testing mould component (6)；
(h) the first fiber (11) are cut along each test specimen side, the connection spiral shell of frame (5), lower frame (3) and bottom plate (1) in releasing
It follows closely, frame (5) in dismounting；
(i) fixing screws for releasing pilot scale membrane module (4), are removed pilot scale membrane module (4)；
(g) the first fiber (11) are cut along each test specimen side, removed lower frame (3)；
(k) fixing screws for releasing lower testing mould component (2), are removed lower testing mould component (2).
7. the method that high ductility cement-based material according to claim 6 is uniaxially stretched Mold Making test specimen, feature exist
In:
In the casting process step (a) assembled lower testing mould component (2) be by flank lower module (21), middle part lower module (22) and
Edge lower module (23) is connected by screw to fixation；
In the casting process step (c) assembled pilot scale membrane module (4) be by module (42) in module in flank (41), middle part and
Module (43) is connected by screw to fixation in edge；Assembled upper testing mould component (6) is by flank upper module (61), middle part upper module
(62) and edge upper module (63) is connected by screw to fixation.
Upper testing mould component (6), pilot scale membrane module (4), lower testing mould component (2) and bottom plate are released in the demoulding process step (f)
(1) attachment screw is to release flank upper module (61), module (41) and flank lower module (21) and bottom plate (1) in flank
Attachment screw；
The fixing screws that upper testing mould component (6) are released in the demoulding process step (g) are to release flank upper module (61), middle part
The fixing screws of upper module (62) and edge upper module (63)；
The fixing screws that pilot scale membrane module (4) are released in the demoulding process step (i) are to release module (41), middle part in flank
The fixing screws of module (43) in middle module (42) and edge；
The fixing screws that lower testing mould component (2) are released in the demoulding process step (k) are to release flank lower module (21), middle part
The fixing screws of lower module (22) and edge lower module (23).
8. a kind of high ductility cement-based material according to claim 6 is uniaxially stretched obtained by the method for Mold Making test specimen
The method that test specimen is tested, it is characterised in that: dumbbell shape test specimen (13) is placed in and is uniaxially stretched in fixture (14), spiral shell is penetrated
Bar is bonded dumbbell shape test specimen (13) closely with fixture (14) is uniaxially stretched, and is uniaxially stretched fixture (14) test equipment collet
(15) it is fixedly clamped；Start to load using displacement Loading Method, until dumbbell shape test specimen (13) are broken or lose bearing capacity, complete
Test.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111175114A (en) * | 2020-01-17 | 2020-05-19 | 长安大学 | Molding test mold and method for chopped fiber-cement-based material test piece |
| CN112268774A (en) * | 2020-11-11 | 2021-01-26 | 石家庄铁道大学 | Sample preparation device and process for mechanical test of frozen soil and concrete contact surface |
| CN114047060A (en) * | 2021-09-03 | 2022-02-15 | 北京理工大学 | A sample subassembly for explosive welding interface developments compression tensile mechanical properties test |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1119143A (en) * | 1994-03-03 | 1996-03-27 | 南非原子能有限公司 | Production of composites |
| US20130012625A1 (en) * | 2011-07-05 | 2013-01-10 | Li Victor C | Strain hardening brittle matrix composites with high strength and high tensile ductility |
| CN104006995A (en) * | 2014-05-29 | 2014-08-27 | 扬州大学 | Fiber neat paste test piece forming method for scanning microscope |
| CN206170279U (en) * | 2016-11-17 | 2017-05-17 | 中国建材检验认证集团厦门宏业有限公司 | A mould for fiber cement base combined material tensile experiment |
| CN206510176U (en) * | 2017-02-28 | 2017-09-22 | 吉林大学 | A kind of experiment making mould of fiber knitted net enhancing concrete |
| JP2018149747A (en) * | 2017-03-13 | 2018-09-27 | 三井化学株式会社 | Injection molded article and manufacturing method thereof |
| CN109406273A (en) * | 2018-10-26 | 2019-03-01 | 太原理工大学 | Adhesive type tests the dumbbell shape test piece mould and test method that concrete axial draws performance |
| CN109459310A (en) * | 2018-12-14 | 2019-03-12 | 海南大学 | Fibre reinforced concrete is uniaxially stretched performance test test specimen and its test method |
| CN109822724A (en) * | 2019-02-26 | 2019-05-31 | 东南大学 | Variable thickness single fiber pull-out cement base test piece mould and adjusting and test method |
-
2019
- 2019-10-15 CN CN201910976514.3A patent/CN110530722B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1119143A (en) * | 1994-03-03 | 1996-03-27 | 南非原子能有限公司 | Production of composites |
| US20130012625A1 (en) * | 2011-07-05 | 2013-01-10 | Li Victor C | Strain hardening brittle matrix composites with high strength and high tensile ductility |
| CN104006995A (en) * | 2014-05-29 | 2014-08-27 | 扬州大学 | Fiber neat paste test piece forming method for scanning microscope |
| CN206170279U (en) * | 2016-11-17 | 2017-05-17 | 中国建材检验认证集团厦门宏业有限公司 | A mould for fiber cement base combined material tensile experiment |
| CN206510176U (en) * | 2017-02-28 | 2017-09-22 | 吉林大学 | A kind of experiment making mould of fiber knitted net enhancing concrete |
| JP2018149747A (en) * | 2017-03-13 | 2018-09-27 | 三井化学株式会社 | Injection molded article and manufacturing method thereof |
| CN109406273A (en) * | 2018-10-26 | 2019-03-01 | 太原理工大学 | Adhesive type tests the dumbbell shape test piece mould and test method that concrete axial draws performance |
| CN109459310A (en) * | 2018-12-14 | 2019-03-12 | 海南大学 | Fibre reinforced concrete is uniaxially stretched performance test test specimen and its test method |
| CN109822724A (en) * | 2019-02-26 | 2019-05-31 | 东南大学 | Variable thickness single fiber pull-out cement base test piece mould and adjusting and test method |
Non-Patent Citations (2)
| Title |
|---|
| SUN-WOO KIM 等: "Tensile performance of fiber-reinforced cement composites with hybrid fibers", 《CONTEMPORARY ENGINEERING SCIENCES》 * |
| 尚世明 等: "混凝土双轴拉压动态强度及破坏准则试验", 《沈阳建筑大学学报》 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111175114A (en) * | 2020-01-17 | 2020-05-19 | 长安大学 | Molding test mold and method for chopped fiber-cement-based material test piece |
| CN112268774A (en) * | 2020-11-11 | 2021-01-26 | 石家庄铁道大学 | Sample preparation device and process for mechanical test of frozen soil and concrete contact surface |
| CN112268774B (en) * | 2020-11-11 | 2022-05-24 | 石家庄铁道大学 | Sample preparation device and process for mechanical test of frozen soil and concrete contact surface |
| CN114047060A (en) * | 2021-09-03 | 2022-02-15 | 北京理工大学 | A sample subassembly for explosive welding interface developments compression tensile mechanical properties test |
| CN114047060B (en) * | 2021-09-03 | 2023-11-03 | 北京理工大学 | Sample assembly for dynamic compression and stretching mechanical property test of explosive welding interface |
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Application publication date: 20191203 Assignee: Suzhou Lifuyuan New Material Technology Co.,Ltd. Assignor: HUAIYIN INSTITUTE OF TECHNOLOGY Contract record no.: X2023980042499 Denomination of invention: High ductility cement-based materials - Uniaxial tensile molds and specimen preparation and testing methods Granted publication date: 20220510 License type: Common License Record date: 20230926 |
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