CN107345877A - A kind of concrete axial breaks experiment test block mould - Google Patents
A kind of concrete axial breaks experiment test block mould Download PDFInfo
- Publication number
- CN107345877A CN107345877A CN201710550429.1A CN201710550429A CN107345877A CN 107345877 A CN107345877 A CN 107345877A CN 201710550429 A CN201710550429 A CN 201710550429A CN 107345877 A CN107345877 A CN 107345877A
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- China
- Prior art keywords
- plate
- bottom plate
- concrete
- test block
- block mould
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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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
- G01N3/10—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces generated by pneumatic or hydraulic pressure
-
- 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
-
- 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
-
- 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
- G01N2203/003—Generation of the force
- G01N2203/0042—Pneumatic or hydraulic means
- G01N2203/0048—Hydraulic means
-
- 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
- G01N2203/0069—Fatigue, creep, strain-stress relations or elastic constants
- G01N2203/0073—Fatigue
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- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The present invention relates to a kind of concrete axial to break experiment test block mould, belongs to concrete material technical field of performance test.The device includes：The mould includes：Bottom plate, two blocks of side plates and two end plates；There are some mounting holes on bottom plate, fixing hole is formed with side plate；Side plate can select different mounting holes, then the spacing between two blocks of side plates is different by being fixedly mounted on through the bolt of mounting hole and fixing hole on bottom plate；The top surface at bottom plate both ends is formed with groove, and end plate is in groove；The both ends of the surface of bottom plate have some screwed holes；The both ends of bottom plate also have the fixed plate that the bolt coordinated with screwed hole is fixedly mounted, and have the self-locking bolt for propping up end plate in fixed plate.Concrete axial provided by the invention breaks experiment test block mould, and the lateral dimension of test specimen can be adjusted by the transverse shifting of side plate, and the vertical height of test specimen can also be adjusted；Solve the problems, such as that axle draws test specimen can not precisely make the prefabricated crack test specimen of more sizes.
Description
Technical field
The present invention relates to a kind of concrete axial to break experiment test block mould, belongs to concrete material Performance Testing Technology neck
Domain.
Background technology
Concrete is one of most widely used construction material in Practical Project.Concrete has anti-pressure ability strong, durable
Property good, easy plasticity the advantages that, while there is the features such as abundant raw material, materials are easy, simple production process.But due to concrete
Tensile strength be much smaller than concrete compression strength so that in Practical Project, concrete often due to by tension and
Destroy, therefore, the research to concrete tensile property is particularly necessary.At present, the research of the mechanical behavior of concrete material is main
Establish on the basis of experimental study, uniaxial tensile test is the main method for obtaining concrete tensile property.According to SL352-
2006《Concrete for hydraulic structure testing regulations》The standard concrete tension test specimen provided, the tensile property of concrete can be determined.
At present the problem of is SL352-2006《Concrete for hydraulic structure testing regulations》There is provided be used for measure concrete tension
The standard specimen size of performance is unique, and this method only obtains the concrete tensile strength of single size, modulus of elasticity and this structure
Relation, the influence that size effectiveness is brought can not be considered, meanwhile, on realizing that the mechanical performance of concrete in axle drawstring crack studies state
It inside there is no detailed research.
The content of the invention
The invention solves technical problem to be：The shortcomings that overcoming above-mentioned technology, there is provided a kind of to manufacture sizes
Concrete axial breaks experiment test block mould.
In order to solve the above-mentioned technical problem, technical scheme proposed by the present invention is：A kind of concrete axial breaks experiment examination
Block mould, including：Bottom plate, two blocks of side plates and two end plates；There are some mounting holes on the bottom plate, be formed with the side plate solid
Determine hole；The side plate can be by being fixedly mounted on the bottom plate through the bolt of the mounting hole and fixing hole, and selection is not
The same mounting hole, then the spacing between two blocks of side plates is different；The top surface at the bottom plate both ends is formed with groove, the end
Plate is in the groove；The both ends of the surface of the bottom plate have some screwed holes；The both ends of the bottom plate also have and the spiral shell
The fixed plate that the bolt that pit coordinates is fixedly mounted, there is the self-locking bolt for propping up the end plate in the fixed plate；Also include
One fixture, the fixture are clamped on the biside plate, have steel bar on the fixture, and the steel bar is inserted into concrete
It is middle to make prefabricated crack.
Such scheme, which further improves, to be：The end plate for also including to be separately mounted on the end plate and side plate increases
High part increases part with side plate.
Such scheme, which further improves, to be：Also include that the taper filling member in the mounting hole can be filled in.
Such scheme, which further improves, to be：There is scale on the fixture.
Concrete axial provided by the invention breaks experiment test block mould, can adjust test specimen by the transverse shifting of side plate
Lateral dimension, the vertical height of test specimen can also be adjusted；Solve axle to draw test specimen can not precisely to make more sizes prefabricated
The problem of crack test specimen, available for the axle pulling force performance study with cracked concrete.This mould need not change excessive material,
The size of needs is set in advance, you can is realized and is reused existing equipment to obtain the concrete sample of sizes, greatly
The big usage amount for having saved steel.And form removal is convenient, flexible adjustment, the preparation efficiency of concrete sample is improved.
Brief description of the drawings
The invention will be further described below in conjunction with the accompanying drawings.
Fig. 1 is a preferred embodiment structural representation of the invention.
Fig. 2 is clamp structure schematic diagram in Fig. 1.
Embodiment
Embodiment
The concrete axial that the present embodiment provides, which breaks, tests test block mould, such as Fig. 1, including：1, two piece of and of side plate 3 of bottom plate
Two end plates 2；There are some mounting holes on bottom plate 1, fixing hole is formed with side plate 3；Side plate 3 is by through mounting hole and fixing hole
Bolt be fixedly mounted on bottom plate 1.As shown in FIG., mounting hole is spaced, by selecting different mounting holes, to adjust
Spacing between two blocks of side plates 3.The top surface at the both ends of bottom plate 1 is formed with groove, and end plate 2 is in groove；The both ends of the surface of bottom plate 1 have
Some screwed holes；The both ends of bottom plate 1 also have by the bolt coordinated with screwed hole come the fixed plate 4 being fixedly mounted, fixed plate 4
It is upper that there is the self-locking bolt 9 for propping up end plate 2.
The concrete axial that the present embodiment provides breaks experiment test block mould, in addition to a fixture 10, fixture 10 clamp
On biside plate 3.Such as Fig. 2, fixture 10 uses socket join structure, and its span is adjustable, has steel bar on fixture 10, and steel bar is inserted into
Prefabricated crack is made in concrete.Also there is scale on fixture 10.
In order to allow the height adjustable of mould, the present embodiment also provides the end plate that can be separately mounted on end plate 2 and side plate 3
Increase part 6 and increase part 5 with side plate.End plate increases part 6 and side plate increases part 5 and is arranged on end plate 2 and side plate 3 by bolt respectively
On, and end plate increases part 6, side plate increases part 5, the screwed hole on end plate 2 and side plate 3 is blind hole, so may insure mould
Inner surface is smooth.
When making the size in addition to the test specimen of minimum dimension, taper filling is filled in the mounting hole exposed in mould
Part.
End plate 2 has sizes, and for matching different size test specimens, the both sides of end plate 2 also have groove, so, can
So that the edge of side plate 3 is embedded in groove, increase overall rigidity.
It is as follows that the concrete axial that the present embodiment provides breaks experiment test block mould concrete operation step：
1. according to the size for the concrete sample to be poured, the mobile regulation of side plate 3 is to the size needed, with bolt and bottom plate 1
Fix, the mounting hole exposed in mould is filled up with coniform filling member.
2. fixed plate 4 is fixed by bolts into suitable position, supporting end plate 2 is then placed on what bottom plate 1 was reserved
In groove, while side plate 3 is embedded in the reserved groove of end plate 2, be can be manually rotated self-locking bolt 9, is fixed end plate 2.
3. as needed, choose whether that end plate increases part 6, side plate increases part 5 for increase.
4. side plate 3 is fixed at required size with fixture 10, and locking fixture 10.
By the above method, mould is integrally roll-outed, you can carries out pouring for concrete.Obtain band cracked concrete axle
Draw test specimen.
After obtaining test specimen, axle is carried out using microcomputer controlled electro-hydraulic servo low cycle fatigue test machine and draws experiment, with displacement of dehiscing
Meter measurement CMOD, tests by using power control or CMOD controls, can obtain P-CMOD curves, can be used for dividing according to experimental data
Analysis calculates the breaking mechanics parameters such as fracture toughness and the modulus of elasticity of concrete.Specific formula for calculation refers to Tada stress intensities
Cytokine Handbook.
；
；
In formula:For stress intensity factor, unit is MPa m1/2；A is the 1/2 of the length in the crack in crack, unit mm；b
For the 1/2 of specimen width, unit mm.
；
；
In formula：E is modulus of elasticity, unit MPa；For stress, unit Mpa, a are the half of fracture length, unit mm.
The present invention is not limited to the concrete technical scheme described in above-described embodiment, and in addition to the implementation, the present invention may be used also
To there is other embodiment.All technical schemes formed using equivalent substitution, it is the protection domain of application claims.
Claims (4)
1. a kind of concrete axial breaks experiment test block mould, it is characterised in that including：Bottom plate, two blocks of side plates and two end plates；
There are some mounting holes on the bottom plate, fixing hole is formed with the side plate；The side plate can be by through the mounting hole
It is fixedly mounted on the bolt of fixing hole on the bottom plate, selects the different mounting holes, then between two blocks of side plates
Spacing is different；The top surface at the bottom plate both ends is formed with groove, and the end plate is in the groove；The both ends mask of the bottom plate
There are some screwed holes；The both ends of the bottom plate also have by the bolt coordinated with the screwed hole the fixation that is fixedly mounted
Plate, there is the self-locking bolt for propping up the end plate in the fixed plate；Also include a fixture, the fixture is clamped in described two
On side plate, there is steel bar on the fixture, the steel bar is inserted into making prefabricated crack in concrete.
2. concrete axial according to claim 1 breaks experiment test block mould, it is characterised in that：Also include distinguishing
End plate on the end plate and side plate increases part and increases part with side plate.
3. concrete axial according to claim 1 breaks experiment test block mould, it is characterised in that：Also include filling in
Taper filling member in the mounting hole.
4. concrete axial according to claim 1 breaks experiment test block mould, it is characterised in that：Have on the fixture
Scale.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710550429.1A CN107345877A (en) | 2017-07-07 | 2017-07-07 | A kind of concrete axial breaks experiment test block mould |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710550429.1A CN107345877A (en) | 2017-07-07 | 2017-07-07 | A kind of concrete axial breaks experiment test block mould |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107345877A true CN107345877A (en) | 2017-11-14 |
Family
ID=60256758
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710550429.1A Pending CN107345877A (en) | 2017-07-07 | 2017-07-07 | A kind of concrete axial breaks experiment test block mould |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107345877A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111267207A (en) * | 2020-02-24 | 2020-06-12 | 重庆大学 | Device for manufacturing test piece section for detecting broken wire of Prestressed Concrete Cylinder Pipe (PCCP) |
| CN114486448A (en) * | 2022-02-17 | 2022-05-13 | 南京工程学院 | Method for manufacturing multi-angle V or U-shaped cracks of stretched soil sample |
| CN115718019A (en) * | 2022-09-27 | 2023-02-28 | 河海大学 | Concrete axial tension test piece fine die and working method thereof |
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| CN102519767A (en) * | 2011-12-16 | 2012-06-27 | 武汉大学 | Mould for manufacturing fissure surface of rock like test block |
| CN103411810A (en) * | 2013-08-14 | 2013-11-27 | 东华大学 | Portable adjustable sample-preparing apparatus and sample-preparing method for dumbbell-shaped biological flexible material sample |
| CN204094924U (en) * | 2013-11-26 | 2015-01-14 | 任丘市永基建筑安装工程有限公司 | A kind of adjustable multiplex prefabricated board die |
| CN105675368A (en) * | 2016-03-21 | 2016-06-15 | 中国石油大学(北京) | Size-variable prefabricating die for thin interbed simulation test |
| CN105699161A (en) * | 2016-01-14 | 2016-06-22 | 河海大学 | Size-adjustable mold adaptive to concrete samples in various sizes |
| CN205580844U (en) * | 2016-05-04 | 2016-09-14 | 青岛理工大学 | But reuse's reinforced concrete beam type test piece pouring die |
| CN206248416U (en) * | 2016-12-05 | 2017-06-13 | 山东科技大学 | Prepare the adjustable die of the sample of rocks containing crack |
| CN207066884U (en) * | 2017-07-07 | 2018-03-02 | 水利部交通运输部国家能源局南京水利科学研究院 | A kind of concrete axial breaks experiment test block mould |
-
2017
- 2017-07-07 CN CN201710550429.1A patent/CN107345877A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102519767A (en) * | 2011-12-16 | 2012-06-27 | 武汉大学 | Mould for manufacturing fissure surface of rock like test block |
| CN103411810A (en) * | 2013-08-14 | 2013-11-27 | 东华大学 | Portable adjustable sample-preparing apparatus and sample-preparing method for dumbbell-shaped biological flexible material sample |
| CN204094924U (en) * | 2013-11-26 | 2015-01-14 | 任丘市永基建筑安装工程有限公司 | A kind of adjustable multiplex prefabricated board die |
| CN105699161A (en) * | 2016-01-14 | 2016-06-22 | 河海大学 | Size-adjustable mold adaptive to concrete samples in various sizes |
| CN105675368A (en) * | 2016-03-21 | 2016-06-15 | 中国石油大学(北京) | Size-variable prefabricating die for thin interbed simulation test |
| CN205580844U (en) * | 2016-05-04 | 2016-09-14 | 青岛理工大学 | But reuse's reinforced concrete beam type test piece pouring die |
| CN206248416U (en) * | 2016-12-05 | 2017-06-13 | 山东科技大学 | Prepare the adjustable die of the sample of rocks containing crack |
| CN207066884U (en) * | 2017-07-07 | 2018-03-02 | 水利部交通运输部国家能源局南京水利科学研究院 | A kind of concrete axial breaks experiment test block mould |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111267207A (en) * | 2020-02-24 | 2020-06-12 | 重庆大学 | Device for manufacturing test piece section for detecting broken wire of Prestressed Concrete Cylinder Pipe (PCCP) |
| CN111267207B (en) * | 2020-02-24 | 2024-05-28 | 重庆大学 | Device for manufacturing Prestressed Concrete Cylinder Pipe (PCCP) broken wire detection test piece section |
| CN114486448A (en) * | 2022-02-17 | 2022-05-13 | 南京工程学院 | Method for manufacturing multi-angle V or U-shaped cracks of stretched soil sample |
| CN114486448B (en) * | 2022-02-17 | 2024-04-12 | 南京工程学院 | Manufacturing method of stretching soil sample multi-angle V or U-shaped crack |
| CN115718019A (en) * | 2022-09-27 | 2023-02-28 | 河海大学 | Concrete axial tension test piece fine die and working method thereof |
| CN115718019B (en) * | 2022-09-27 | 2023-08-22 | 河海大学 | Fine die for concrete axial-pulling test piece and working method thereof |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20171114 |
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| RJ01 | Rejection of invention patent application after publication |