CN106352808A - Device for measuring deformation of cement-based composite material sample in laboratory - Google Patents
Device for measuring deformation of cement-based composite material sample in laboratory Download PDFInfo
- Publication number
- CN106352808A CN106352808A CN201610850555.4A CN201610850555A CN106352808A CN 106352808 A CN106352808 A CN 106352808A CN 201610850555 A CN201610850555 A CN 201610850555A CN 106352808 A CN106352808 A CN 106352808A
- Authority
- CN
- China
- Prior art keywords
- test specimen
- cement
- composite material
- stainless steel
- base composite
- Prior art date
- 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.)
- Granted
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/16—Measuring arrangements characterised by the use of optical techniques for measuring the deformation in a solid, e.g. optical strain gauge
Abstract
The invention relates to a device for measuring deformation of a cement-based composite material sample in a laboratory. The device comprises a stainless steel drawing bar, fixing bolts, an annular fixator, a cement-based composite material sample, stainless steel discs, an annular clamping sheet, a scale pointer rod, a rectangular scale bar, a sample pouring test die and an optical fiber grating strain meter, wherein the stainless steel drawing rod has different diameters, represents for different constraint forces and can be replaced according to requirements. The device is simple to mount and convenient to use, can be arranged in a required environment along with the sample, is free of deformation and still exerts the effect, and is capable of visually obtaining stress and deformation of the sample expanded in different ages.
Description
Technical field
The present invention relates to one kind is used for measuring produced when cement-base composite material expands under external environment answering
Power, and the device of horizontal and vertical strain.
Background technology
Concrete and mortar are the present age main cement based civil engineering materials, are commonly utilized in house construction engineering, bridge
In engineering, also water conservancy and other engineering.But since recent decades, repeatedly occur both at home and abroad because of concrete structure durability not
Structure function premature failure that is sufficient and causing even destroys the accident of avalanche, gives people class and causes huge economic loss and life
Property safety problem.So many scholars put forth effort on research concrete or mortar occurs the reason destroy both at home and abroad, find it
In one important the reason be exactly: under the long term of external environment, concrete can crystallize, expands, ftracture, and gradually
Lose intensity.So many scholars are devoted to studying concrete or the reason mortar expands and produced consequence.
Cement-base composite material test specimen is placed in certain environment, observe its stress produced by the period of certain and
Deformation, then is combined with modern microscopic sdIBM-2+2q.p.approach technology, the reason can studying concrete and expand.But currently used for research
Mostly test is unstable for the instrument that cement-base composite material expands, or instrument this be deformed under corrosive environment and can not
Accurately measure deformation data.
Content of the invention
The purpose of the present invention is for deficiency of the prior art, provides a kind of research cement-base composite material to expand
When used device, restraining forceies can be adjusted by conditioning instrumentation, and swelling stress and strain produced by measuring, use
In the properties evaluating cement-base composite material.
For achieving the above object, the invention discloses following technical scheme:
A kind of test chamber measures the device that cement-base composite material test specimen is deformed, including stainless steel stretched bar, admittedly
Determine bolt, loop fasteners, cement-base composite material test specimen, stainless steel disk, annular intermediate plate, tuning drive gear bar, rectangle scale
Bar, pour test specimen die trial and fiber grating strain meter:
Stainless steel stretched bar is fixed together with two stainless steel disks by loop fasteners；Cement based composite wood
Material test specimen is clamped between two rustless steel steel disks by fixing bolt；Loop fasteners will set threaded stainless steel stretched
Bar is fixed in stainless steel disk；Stainless steel disk is provided with the screwed hole being easy to that fixing bolt passes through and fixes test specimen；Annular
Intermediate plate has elasticity, and there is gap centre, and annular intermediate plate is enclosed within outside test specimen, and opens with the expansion of test specimen, gap
Both sides are respectively fixed with tuning drive gear bar and rectangle scale strip；Pour the size of test specimen die trial and package unit matches, in
Between partly be hollow, pour and obtain cement-base composite material test specimen；Fiber grating strain meter is fixed on the table of stainless steel stretched bar
Face.
Further, described tuning drive gear bar is fixed on the edge of crack of annular intermediate plate, and the expansion with annular intermediate plate
And vertically move, show swell increment together with rectangle scale strip.
Further, described rectangle scale strip is fixed on the opposite side in the crack of annular intermediate plate, and with annular intermediate plate
Expand and vertically move, and have scale.
Further, described rectangle scale strip is provided with support section and the scale part perpendicular to support section, scale portion
Hollow out in the middle part of point, tuning drive gear bar is in hollow part.
Further, described fiber grating strain meter welding or the cementing surface in stainless steel stretched bar.
Further, described annular intermediate plate is made of copper.
Further, described stainless steel disk is provided with the draw-in groove for sticking into cement-base composite material test specimen.
A kind of test chamber disclosed by the invention measures the device that cement-base composite material test specimen is deformed, and has following
Beneficial effect:
1. the invention provides a kind of experiment when measurement cement-base composite material ess-strain device, easy for installation, behaviour
Make simple, the stretch of different-diameter can be changed to obtain different restraining forceies, longitudinal strain can be obtained by strain gauge,
Transversely deforming can be observed directly by pointer bar.
2. the device material therefor that the present invention provides can soak and not deform, so when being tested, test specimen
Can be placed in the environment of needs together with device, even acid or alkaline environment, thus facilitate and grind under varying environment
Study carefully the carrying out of experiment.
Brief description
Fig. 1 measures the cross-sectional view of concrete sample longitudinal strain device for the present invention.
Fig. 2 is stainless steel stretched bar used by apparatus of the present invention, is the stainless steel stretched bar structural representation of different-diameter.
Fig. 3 is the plane graph of stainless steel disk.
Fig. 4 is the structural representation including annular intermediate plate, tuning drive gear bar and rectangle scale strip.
Fig. 5 is to pour die trial used by test specimen.
Each reference is: 1, stainless steel stretched bar, 2, fixing bolt, 3, loop fasteners, 4, cement-base composite material
Test specimen, 5, stainless steel disk, 6, annular intermediate plate, 7, tuning drive gear bar, 8, rectangle scale strip, 9, die trial, 10, fiber grating strain
Meter.
Specific embodiment
With reference to embodiment, the invention will be further described.
Refer to Fig. 1-Fig. 5.The present invention is the profile of cement-base composite material swelling stress strain device, for examination
Part produces restraining forceies, and calculates, by the length change measuring stretch, the stress and strain producing.
Embodiment 1
A kind of test chamber measures the device that cement-base composite material test specimen is deformed, including stainless steel stretched bar 1, admittedly
Determine bolt 2, loop fasteners 3, cement-base composite material test specimen 4, stainless steel disk 5, annular intermediate plate 6, tuning drive gear bar 7, square
Shape scale strip 8, pour test specimen die trial 9 and fiber grating strain meter 10:
Stainless steel stretched bar 1 is fixed together with two stainless steel disks 5 by loop fasteners 3, and annular is fixing
The size of device 3 is supporting with stainless steel stretched bar 1 size, and the two ends of stainless steel stretched bar 1 are provided with screw thread, through stainless steel disk 5,
It is fixed together by loop fasteners 3；Cement-base composite material test specimen 4 is clamped at two rustless steel circles by fixing bolt 2
Between disk 5；Loop fasteners 3 will set threaded stainless steel stretched bar 1 and be fixed in stainless steel disk 5；In stainless steel disk 5
It is provided with the screwed hole being easy to that fixing bolt 2 passes through and fixes test specimen；Annular intermediate plate 6 has elasticity, and there is gap centre, annular intermediate plate
6 are enclosed within outside test specimen 4, and the expansion with test specimen 4 and open, the both sides in gap are respectively fixed with tuning drive gear bar 7 and square
Shape scale strip 8；Pour the size of test specimen die trial 9 and package unit matches, mid portion is hollow, pours and obtains cement based
Composite material test piece 4；Fiber grating strain meter 10 is fixed on the surface of stainless steel stretched bar 1.
Embodiment 2
In the present embodiment, described tuning drive gear bar 7 is fixed on the edge of crack of annular intermediate plate 6, and with annular intermediate plate 6
Expand and vertically move, show swell increment together with rectangle scale strip 8.Remaining technical scheme of the present embodiment and embodiment 1 one
Cause, and the technical scheme that the present embodiment is adopted is also applied for remaining embodiment.
Embodiment 3
In the present embodiment, described rectangle scale strip 8 is fixed on the opposite side in the crack of annular intermediate plate 6, and with marmon clamp
The expansion of piece 6 and vertically move, and have scale.Remaining technical scheme of the present embodiment is consistent with embodiment 2, and the present embodiment
The technical scheme being adopted is also applied for remaining embodiment.
Embodiment 4
In the present embodiment, described rectangle scale strip 8 is provided with support section and the scale part perpendicular to support section, scale
Part middle part hollow out, tuning drive gear bar 7 is in hollow part, and tuning drive gear bar 7 can move freely in rectangle scale strip 8,
Data is accurately pointed out when cement-base composite material test specimen 4 expands.Remaining technical scheme of the present embodiment and embodiment 3 one
Cause, and the technical scheme that the present embodiment is adopted is also applied for remaining embodiment.
Embodiment 5
In the present embodiment, described fiber grating strain meter 10 welds or the cementing surface in stainless steel stretched bar 1, can do length
Phase monitors.Remaining technical scheme of the present embodiment is consistent with embodiment 1, and the technical scheme that the present embodiment is adopted is also applied for
Remaining embodiment.
Embodiment 6
In the present embodiment, described annular intermediate plate 6 is made of copper, and existing certain shape has elasticity again, multiple in cement based
Can be with expanding together when condensation material test specimen 4 expands.Remaining technical scheme of the present embodiment is consistent with embodiment 1, and this
The technical scheme that embodiment is adopted is also applied for remaining embodiment.
Embodiment 7
In the present embodiment, described stainless steel disk 5 is provided with the draw-in groove for sticking into cement-base composite material test specimen 4.This
Remaining technical scheme of embodiment is consistent with embodiment 1, and the technical scheme that the present embodiment is adopted is also applied for remaining enforcement
Example.
Stainless steel stretched bar 1 elastic modelling quantity of heretofore described device it is known that and have the stretch of multiple different-diameters,
It is convenient for changing, different diameters represents different restraining forceies, the stress of generation is calculated by the strain of stretch.
Two stainless steel disks in this device are identical, have eight screwed holes, and have draw-in groove, the water of forming
Cement-based composite material test specimen 4 sticks in draw-in groove, and both sides have fixing bolt to pass through screwed hole, by cement-base composite material test specimen
4 firmly load between two disks.
The experimental principle of the present invention is as follows:
Cement-base composite material has certain intensity after hardened forming, but sulphate corrosion environment around
It may occur that different degrees of expansion under long term, and under different restraining forceies, the degree that expands or destroy
Different, as arranged, in inside concrete, the cracking that deformed bar will slow down concrete.The present invention can be by changing
Take the stretch of different-diameter, to feed water the different restraining forceies of cement-based composite material test specimen, by the change of fiber grating strain meter
Shape result, to determine the longitudinal strain of concrete, and by being calculated stress, by the scale of pointer bar on annular intermediate plate
To determine the transversely deforming of concrete sample, thus easily obtaining the strain in different larval instar concrete.
The present invention takes following steps when using:
The first step, required cement-base composite material is prepared and stirs, be injected in mould, mould inner wall scribbles uniformly
Oil, to facilitate the demoulding after molding, then according to related specifications mechanical pudding, sealing is left at 20 DEG C, after 24 hours, molding
Test specimen afterwards uses hydraulic press release.
Second step, test specimen 4 two ends after the demoulding are smooth with grinder grinding, and standard curing, to 28 day age, then takes out
Stand-by.
3rd step, stretch needed for selection, elastic produced by the application of 5kn testing machine by tensile load by measurement
Deformation, calibrates to stretch, and the stainless steel stretched bar 1 after calibration is qualified is stand-by.
4th step, by the stainless steel stretched bar 1 with fiber grating strain meter 10, through test specimen 4, and should by fiber grating
The tail optical fiber becoming meter 10 pulls out from two ends, then stainless steel disk 5 is stuck in test specimen 4 one end, then is stuck in test specimen 4 with another disk
The other end, test specimen is secured firmly between disk by stainless steel disk 5 with fixing bolt 2.
5th step, tail optical fiber is embedded in the groove of stretch, adds loop fasteners 3, by stainless steel stretched bar 1 and disk
Tightly pin, and sealing part is carried out dripping wax or oil sealing process it is ensured that the liquid in external environment cannot be introduced into inside.
Whether the 6th step, after test specimen is completely fixed in a device, check between tuning drive gear bar 7 and rectangle scale strip 8
Can arbitrarily slide, then annular intermediate plate 6 is enclosed within the centre position of test specimen.
7th step, package unit installs, and can be placed in the required environment of experiment device together with test specimen and carry out
Corrosion, can obtain the strain of longitudinal stretching in the time needing by fiber grating strain meter 10, and pointer on annular intermediate plate 6
Scale, thus obtaining expanding the strain producing, and by being calculated stress.
This apparatus structure is simple, good stability, easy for installation can save a large amount of manpowers it is easy to carry, material resources it is adaptable to
Experimentation and scientific research.
The above is only the preferred embodiment of the present invention, is not intended to limit；Although it should be pointed out that with reference to above-mentioned each
Embodiment has been described in detail to the present invention, it will be understood by those within the art that, it still can be to above-mentioned each
Technical scheme described in embodiment is modified, or carries out equivalent to wherein some or all of technical characteristic；And this
A little scopes changed and replace, do not make the essence disengaging various embodiments of the present invention technical scheme of corresponding technical scheme.
Claims (7)
1. the device that a kind of test chamber measurement cement-base composite material test specimen is deformed is it is characterised in that include rustless steel
Stretch, fixing bolt, loop fasteners, cement-base composite material test specimen, stainless steel disk, annular intermediate plate, tuning drive gear bar,
Rectangle scale strip, pour test specimen die trial and fiber grating strain meter:
Stainless steel stretched bar is fixed together with two stainless steel disks by loop fasteners；Cement-base composite material tries
Part is clamped between two rustless steel steel disks by fixing bolt；It is solid that loop fasteners will set threaded stainless steel stretched bar
It is scheduled in stainless steel disk；Stainless steel disk is provided with the screwed hole being easy to that fixing bolt passes through and fixes test specimen；Annular intermediate plate
There is elasticity, there is gap centre, annular intermediate plate is enclosed within outside test specimen, and opens with the expansion of test specimen, the both sides in gap
It is respectively fixed with tuning drive gear bar and rectangle scale strip；Pour the size of test specimen die trial and package unit matches, pars intermedia
It is divided into hollow, pour and obtain cement-base composite material test specimen；Fiber grating strain meter is fixed on the surface of stainless steel stretched bar.
2. a kind of test chamber according to claim 1 measures the device that cement-base composite material test specimen is deformed, its
Be characterised by, described tuning drive gear bar is fixed on the edge of crack of annular intermediate plate, and the expansion with annular intermediate plate and vertically move
Dynamic, show swell increment together with rectangle scale strip.
3. a kind of test chamber according to claim 2 measures the device that cement-base composite material test specimen is deformed, its
Be characterised by, described rectangle scale strip is fixed on the opposite side in the crack of annular intermediate plate, and the expansion with annular intermediate plate and hang down
Translation is moved, and has scale.
4. a kind of test chamber according to claim 3 measures the device that cement-base composite material test specimen is deformed, its
It is characterised by, described rectangle scale strip is provided with support section and the scale part perpendicular to support section, engraves in the middle part of scale part
Sky, tuning drive gear bar is in hollow part.
5. a kind of test chamber according to claim 1 measures the device that cement-base composite material test specimen is deformed, its
It is characterised by, described fiber grating strain meter welds or the cementing surface in stainless steel stretched bar.
6. a kind of test chamber according to claim 1 measures the device that cement-base composite material test specimen is deformed, its
It is characterised by, described annular intermediate plate is made of copper.
7. a kind of test chamber according to claim 1 measures the device that cement-base composite material test specimen is deformed, its
It is characterised by, described stainless steel disk is provided with the draw-in groove for sticking into cement-base composite material test specimen.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610850555.4A CN106352808B (en) | 2016-09-26 | 2016-09-26 | A kind of device that laboratory is deformed with measurement cement-base composite material test specimen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610850555.4A CN106352808B (en) | 2016-09-26 | 2016-09-26 | A kind of device that laboratory is deformed with measurement cement-base composite material test specimen |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106352808A true CN106352808A (en) | 2017-01-25 |
| CN106352808B CN106352808B (en) | 2019-09-24 |
Family
ID=57859462
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610850555.4A Expired - Fee Related CN106352808B (en) | 2016-09-26 | 2016-09-26 | A kind of device that laboratory is deformed with measurement cement-base composite material test specimen |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106352808B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109580346A (en) * | 2018-11-21 | 2019-04-05 | 三峡大学 | A kind of device and method of the compressive property using mgnetic observations expansion cement slurry |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101738459A (en) * | 2010-01-25 | 2010-06-16 | 江苏博特新材料有限公司 | Expansion/shrinkage stress testing device for cement-based material |
| CN102608150A (en) * | 2012-02-23 | 2012-07-25 | 江苏博特新材料有限公司 | Device and method for testing expansive properties of concrete |
| CN203908928U (en) * | 2014-07-01 | 2014-10-29 | 三峡大学 | Reinforced concrete bond stress and slippage measuring device |
| CN204008647U (en) * | 2014-07-15 | 2014-12-10 | 天津市金盛源特种建材有限公司 | A kind of concrete limited expansion rate confined expansion bar used of testing |
| CN204302160U (en) * | 2014-12-16 | 2015-04-29 | 天津市金盛源特种建材有限公司 | A kind of on-site concrete swelling agent device for fast detecting |
| CN205209870U (en) * | 2015-11-30 | 2016-05-04 | 青岛理工大学 | Concrete durability for research axle load load provide device |
| CN206095167U (en) * | 2016-09-26 | 2017-04-12 | 长安大学 | Laboratory produces device that warp with measuring engineered cementitious composites test piece |
-
2016
- 2016-09-26 CN CN201610850555.4A patent/CN106352808B/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101738459A (en) * | 2010-01-25 | 2010-06-16 | 江苏博特新材料有限公司 | Expansion/shrinkage stress testing device for cement-based material |
| CN102608150A (en) * | 2012-02-23 | 2012-07-25 | 江苏博特新材料有限公司 | Device and method for testing expansive properties of concrete |
| CN203908928U (en) * | 2014-07-01 | 2014-10-29 | 三峡大学 | Reinforced concrete bond stress and slippage measuring device |
| CN204008647U (en) * | 2014-07-15 | 2014-12-10 | 天津市金盛源特种建材有限公司 | A kind of concrete limited expansion rate confined expansion bar used of testing |
| CN204302160U (en) * | 2014-12-16 | 2015-04-29 | 天津市金盛源特种建材有限公司 | A kind of on-site concrete swelling agent device for fast detecting |
| CN205209870U (en) * | 2015-11-30 | 2016-05-04 | 青岛理工大学 | Concrete durability for research axle load load provide device |
| CN206095167U (en) * | 2016-09-26 | 2017-04-12 | 长安大学 | Laboratory produces device that warp with measuring engineered cementitious composites test piece |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109580346A (en) * | 2018-11-21 | 2019-04-05 | 三峡大学 | A kind of device and method of the compressive property using mgnetic observations expansion cement slurry |
| CN109580346B (en) * | 2018-11-21 | 2021-08-10 | 三峡大学 | Device and method for measuring compressive resistance of expanded cement slurry by using magnetic force |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106352808B (en) | 2019-09-24 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109163985B (en) | In-situ testing device and method for testing shear strength and long-term creep deformation of rock sample | |
| Wu et al. | Tensile strength of concrete under static and intermediate strain rates: Correlated results from different testing methods | |
| CN107449666B (en) | Tensile test method of fiber reinforced composite material for anchoring | |
| CN201464294U (en) | Device for measuring axial tensile strength of cement-based materials | |
| CN103837413A (en) | Concrete tensile creep testing device and concrete shrinkage stress creep testing method | |
| CN101387634A (en) | Uniaxial tension loading unit for testing concrete carbonizing performance under tensile stress and testing method | |
| CN113281190B (en) | Hydraulic asphalt concrete direct tensile test device and application method thereof | |
| CN207439813U (en) | A kind of vertical tensile test apparatus containing tencel cloth fixture | |
| CN103267682A (en) | Device and method for testing material creep under coupling action of tensile stress and environment | |
| CN104792611A (en) | Concrete compression breaking stress-strain total curve testing device | |
| CN101122596A (en) | Concrete cracking sensitivity test device and anti-crack ability evaluation method | |
| CN101650283A (en) | Mould for forming axial tensile-strength test piece of cement-based material and test method | |
| CN109946178B (en) | Equipment and method for evaluating fatigue damage self-repairing capability of asphalt mixture | |
| CN108645719B (en) | Test device for carrying out biaxial loading by utilizing shear apparatus and use method thereof | |
| CN101819135A (en) | Method for measuring bond strength between high-intensity glass fiber rib and concrete | |
| CN204718885U (en) | Material Micro Mechanical Properties is biaxial stretch-formed-fatigue test system | |
| CN101387597A (en) | Concrete hydroosmosis test device under tensile stress and test method | |
| CN105300796B (en) | A kind of sheet metal Instability wrinkling test and evaluation device of adjustable Normal Constraint | |
| CN206095167U (en) | Laboratory produces device that warp with measuring engineered cementitious composites test piece | |
| CN107831064A (en) | A kind of vertical tensile test apparatus containing tencel cloth fixture | |
| CN106352808A (en) | Device for measuring deformation of cement-based composite material sample in laboratory | |
| CN111272557A (en) | Metal material compression creep testing device and measuring method | |
| CN110118868B (en) | Grouting material expansion rate test device and test method thereof | |
| CN108692834B (en) | Be used for verifying concrete stress test device under internal load effect | |
| Zhang et al. | Numerical simulation and experimental study of crack propagation of polydimethylsiloxane |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190924 Termination date: 20210926 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |