CN110243268A - Volume of concrete linear deformation tester and test method - Google Patents
Volume of concrete linear deformation tester and test method Download PDFInfo
- Publication number
- CN110243268A CN110243268A CN201910494827.5A CN201910494827A CN110243268A CN 110243268 A CN110243268 A CN 110243268A CN 201910494827 A CN201910494827 A CN 201910494827A CN 110243268 A CN110243268 A CN 110243268A
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- concrete
- built
- fitting
- cylinder
- amesdial
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
- G01B5/30—Measuring arrangements characterised by the use of mechanical techniques for measuring the deformation in a solid, e.g. mechanical strain gauge
Abstract
The present invention provides a kind of volume of concrete linear deformation tester and test methods.Tester includes amesdial, built-in fitting, pedestal, cylinder, connecting rod, transmission lever and support rod；Pedestal is for fixing support rod and carrying cylinder；Cylinder is for containing concrete to be measured；Built-in fitting includes screw rod and the arch shaped trays that screw tip is arranged in, and for screw rod to be embedded in concrete to be measured from top, arch shaped trays are exposed to the top of concrete to be measured；Support rod is stood upright on pedestal；Connecting rod is to be socketed transmission lever；Amesdial is used to detect volume of concrete linear deformation amount by transmission lever and built-in fitting；Transmission lever is longitudinally disposed and is resisted against between the gauge rod of amesdial and the arch shaped trays of built-in fitting, and the length travel amount for generating built-in fitting with concrete to be measured is passed up to amesdial.The configuration of the present invention is simple, it is easy to operate, can the volume change situation of the whole process to concrete from initial set to final set in real time observed in real time.
Description
Technical field
The present invention relates to a kind of concrete NDT device, specifically a kind of volume of concrete linear deformation tester and
Test method.
Background technique
Concrete is one and is mingled with complicated physical change and chemical reaction process from initial set to final set.A large amount of test
Research shows that: the phenomenon that volume of concrete can be shunk in hardening process, contraction distortion degree is by cement fineness, admixture
The influence of the factors such as type, temperature humidity.
Initially form intensity after concrete initial set, initial set to volume change during final set will generate more microcosmic split
Seam, volume change accelerates the development of later period structural cracks after concrete final set.Structural cracks will affect entire construction quality and peace
The structure or there are the concrete works of waterproof requirement to split with greater need for it is controlled that Quan Xing, especially underground engineering, tension stress act on
The generation and development of seam.Magnesia swelling agent or calcareous swelling agent is often added in the generation in crack in order to prevent in concrete proportioning
Equal additives, to play the role of inhibiting concrete shrinkage or reach expansion.
Swelling agent incorporation when mix Design needs to be determined according to the deflection of concrete curing 28 days,
Concrete hardening overall process volume deformation amount also needs verification experimental verification after incorporation additive.Therefore easy to use, easy behaviour is needed
The instrument of work meets the test of construction site, concrete agitation station to concrete deformation quantity.
Summary of the invention
An object of the present invention is just to provide a kind of volume of concrete linear deformation tester, to solve in practical work
The linear deformation quantity of volume of the concrete from initial set to final set is difficult to the problem of measuring.
The second object of the present invention is just to provide a kind of test method of volume of concrete linear deformation, to obtain concrete
The linear inflection curves of volume during from initial set to final set.
An object of the present invention is achieved in that a kind of volume of concrete linear deformation tester, characterized in that packet
It includes:
Pedestal, for fixing support rod and carrying cylinder；
Cylinder is the barrel of upper opening, and lower end is fixed on the base, and the cylinder is for containing concrete to be measured；
Including screw rod and the arch shaped trays of screw tip are arranged in built-in fitting, and the screw rod is to be measured mixed from top embedment
In solidifying soil, the arch shaped trays are exposed to the top of concrete to be measured；
Support rod, uprightly on the base；
Connecting rod is connected laterally on the support rod, to be socketed transmission lever；
Amesdial, for detecting volume of concrete linear deformation amount by built-in fitting；And
Transmission lever, between gauge rod that is longitudinally disposed and being resisted against amesdial and the arch shaped trays of built-in fitting, for by built-in fitting with
The length travel amount that concrete to be measured generates is passed up to amesdial.
The transmission lever is straight-bar, and lower end is the ball being in contact for the interior disk with the arch shaped trays of the built-in fitting
Face body.
Be equipped with upward inside on the base and set threaded annular protrusion, the lower end of the cylinder by screw thread with
The annular protrusion links together, connected with the pedestal to realize.
In the threaded hole being screwed on the base that the lower end of the support rod passes through surface.
The second object of the present invention is to what is be achieved: a kind of test method of volume of concrete linear deformation, including with
Lower step:
A, it purchases the tester of the volume of concrete linear deformation；
B, release agent or machine oil are smeared on the inner wall of the cylinder and on the intracorporal seating plane of the cylinder；
C, concrete to be measured is uniformly filled into cylinder from the upper end opening of the cylinder；
D, the lower part screw rod of the built-in fitting is inserted into concrete to be measured from the upper end opening of the cylinder；
E, support rod is installed on the base, the transmission lever is set in the lantern ring on the support rod, and is made described
The lower end of transmission lever is resisted against the top of the built-in fitting；
F, amesdial is installed on the support rod, makes the gauge rod of the amesdial and the upper-end contact of the transmission lever, adjust
The pointer of the amesdial is to median location；
G, amesdial reading is periodically read, obtains the linear deformation curves of volume of concrete to be measured.
The configuration of the present invention is simple, it is easy to operate, it can be in real time and during accurate surveying concrete setting using the present apparatus
Cubic deformation situation.Built-in fitting upper end of the invention is arranged to arch shaped trays can be tangent with the spherical surface body of transmission lever lower end, real
Existing smooth contact, in a disguised form reduces the contact area of built-in fitting and transmission lever, prevents concrete setting deformation from unevenly causing pre-
Embedded part inclination, improves displacement transfer precision.Transmission lever is arranged in the present invention between built-in fitting and amesdial so that amesdial only by
The power in gauge rod direction avoids built-in fitting and contacts with the direct of amesdial, it is therefore prevented that the damage of amesdial.
Detailed description of the invention
Fig. 1 is structural schematic diagram of the invention.
Fig. 2 is the structural schematic diagram of built-in fitting of the invention.
In figure: 1, amesdial；2, transmission lever；3, cylinder；4, pedestal；5, support rod；6, built-in fitting；7, connector；8, spiral shell
Bar；9, arch shaped trays.
Specific embodiment
A kind of embodiment 1: test equipment of volume of concrete linear deformation.
As shown in Figure 1, the test equipment of volume of concrete linear deformation of the present invention include built-in fitting 6, pedestal 4, cylinder 3,
Support rod 5 and amesdial 1.Pedestal 4 is welded with 20mm high, internal diameter by being made with a thickness of the stainless-steel sheet of 10mm on pedestal 4
For 100mm, with a thickness of the stainless steel ring of 3mm, inner sidewall is equipped with screw thread, for being connected and fixed with cylinder 3.Cylinder 3 is circle
Tubular structure is made of stainless steel material, outer diameter 100mm, is highly 300mm, wall thickness 2.1mm.The lower end of cylinder 3
Barrel outer surface is machined with the screw thread that height is 20mm.The stainless steel ring on screw thread and pedestal 4 that cylinder 3 passes through lower end when use
It is threadedly coupled, realization pedestal 4 is connected and fixed with cylinder 3.Pedestal 4 and cylinder 3 are using after being threadedly coupled and being conducive to solidify
Concrete fast demoulding, so as to the reuse of the detection instrument.
Support rod 5 is straight-bar, and rear surface is equipped with screw thread, be provided with beside the stainless steel ring on pedestal 4 on support rod 5
The corresponding threaded hole of screw thread.Support rod 5 is vertically arranged the present invention with respect to pedestal 4 when in use, and the two is connected by screw thread.
Built-in fitting 6 includes screw rod 8 and the arch shaped trays 9 that 8 top of screw rod is arranged in, as shown in Fig. 2, arch shaped trays 9 are bottom
Opening up arc-shaped support is connected at the top of portion and screw rod 8.The present invention after populated concrete to be measured, incites somebody to action in cylinder 3
The screw rod 8 of 6 lower part of built-in fitting is inserted vertically into the concrete of cylinder 3 from the upper end opening of cylinder 3, the arc support of built-in fitting 6
Disk 9 is exposed outside concrete.Amesdial 1 includes dial plate and the gauge rod that connect with the dial plate, amesdial 1 by with support rod
5 connectors 7 being connected are mounted on the surface of the arch shaped trays 9 of built-in fitting 6, and the gauge rod of mounted amesdial 1 is set vertically
It sets, the setting height of amesdial 1 is adjusted by adjusting connector 7.
Transmission lever 2 is also equipped between built-in fitting 6 and the gauge rod of amesdial 1, transmission lever 2 is threaded through in lantern ring vertically, set
Ring links together further through lateral connecting rod with support rod.Transmission lever 2 can slide up and down in lantern ring, and lantern ring is to transmission lever
2 play the role of limit.Transmission lever 2 is straight-bar, and lower end is connected with the spherical surface body of ball-type.In the use of the present invention, transmission lever 2
Top be in contact with the end of the gauge rod of amesdial 1, the spherical surface body of transmission lever 2 is resisted against the interior of the arch shaped trays 9 of built-in fitting 6
On surface, the covert contact area reduced between built-in fitting 6 and transmission lever 2 of the design of the arch shaped trays 9 on built-in fitting 6.
By cambered surface smooth engagement between transmission lever 2 and built-in fitting 6 of the invention, it can make built-in fitting 6 that the deformation quantity of concrete is accurate
Transmission lever 2 is passed to, deformation quantity is passed to amesdial 1 again, the shape of concrete can have both been read by amesdial 1 by transmission lever 2
Variable.
The present invention mainly has following advantage:
1, using stainless steel material, it can be made full use of to be unlikely to deform under the influence of extraneous factor, surface compact easy mold release it is excellent
Point.
2, the built-in fitting 6 that upper end is equipped with arch shaped trays 9 can well be contacted with transmission lever 2, since the edge of arch shaped trays 9 is high
In concrete surface, when avoiding the concrete poured the case where pollution hemisphere inner surface.
3, transmission lever 2 only generates vertical displacement under the constraint of lantern ring, avoids amesdial 1 and concrete directly contacts
The case where leading to test error because of inhomogeneous deformation, increase test data accuracy.
4, the present apparatus can test the linear deformation during concrete initial set to final set, can continuously measure in curing cycle
Concrete deformation.The present invention is light, is easily portable and stores.
A kind of embodiment 2: test method of volume of concrete linear deformation.
Referring to Fig. 1, the test method of volume of concrete linear deformation of the invention the following steps are included:
A, the test equipment for implementing volume of concrete linear deformation described in 1 is purchased, no details will be provided herein for structure.
B, release agent or machine oil are smeared on the seating plane on the inner wall of cylinder 3 and in cylinder 3, to be conducive to testing
The concrete by the intracorporal solidification of cylinder smoothly takes out after the completion, so as to the reuse of test equipment.
C, the concrete of liquid is filled from the upper end opening of cylinder 3 to cylinder 3, in order to fill concrete uniformly,
It is constantly plugged and pounded with reinforcing bar in the filling process, after filling is completed, it is also necessary to strike off the laitance on surface, to ensure to test
Accuracy.
D, after the completion of Concrete Filled, the screw rod 8 of the lower part of built-in fitting 6 is inserted vertically into from the upper end opening of cylinder 3
In concrete in cylinder 3, the arch shaped trays 9 on top leak outside in concrete top.Built-in fitting 6 will be inserted in as far as possible in cylinder 3
Region is entreated, to guarantee the accuracy of experimental data.
E, support rod 5 is installed on pedestal 4, transmission lever 2 is set in the lantern ring on support rod 5, is made under transmission lever 2
End is resisted against in the arch shaped trays 9 of built-in fitting 6.
F, amesdial 1 is mounted on support rod 5 by connector 7, makes end and the transmission lever 2 of the gauge rod of amesdial 1
Top be in contact, adjusting the hand of dial on amesdial 1 makes the median location of its indication dial plate.
G, the dial reading for periodically reading amesdial 1, can obtain concrete from initial set to the body in final set whole process
Long-pending linear deformation curves.
Claims (5)
1. a kind of volume of concrete linear deformation tester, characterized in that include:
Pedestal, for fixing support rod and carrying cylinder；
Cylinder is the barrel of upper opening, and lower end is fixed on the base, and the cylinder is for containing concrete to be measured；
Including screw rod and the arch shaped trays of screw tip are arranged in built-in fitting, and the screw rod is to be measured mixed from top embedment
In solidifying soil, the arch shaped trays are exposed to the top of concrete to be measured；
Support rod, uprightly on the base；
Connecting rod is connected laterally on the support rod, to be socketed transmission lever；
Amesdial, for detecting volume of concrete linear deformation amount by built-in fitting；And
Transmission lever, between gauge rod that is longitudinally disposed and being resisted against amesdial and the arch shaped trays of built-in fitting, for by built-in fitting with
The length travel amount that concrete to be measured generates is passed up to amesdial.
2. the tester of volume of concrete linear deformation according to claim 1, characterized in that the transmission lever is straight
Bar, lower end are the spherical surface body being in contact for the interior disk with the arch shaped trays of the built-in fitting.
3. the tester of volume of concrete linear deformation according to claim 1, characterized in that be equipped on the base
Upward inside sets threaded annular protrusion, and the lower end of the cylinder is linked together by screw thread and the annular protrusion,
It is connected with the pedestal to realize.
4. the tester of volume of concrete linear deformation according to claim 1, characterized in that the lower end of the support rod
By in the threaded hole being screwed on the base on surface.
5. a kind of test method of volume of concrete linear deformation, characterized in that the following steps are included:
A, it purchases the tester of volume of concrete linear deformation described in claim 1；
B, release agent or machine oil are smeared on the inner wall of the cylinder and on the intracorporal seating plane of the cylinder；
C, concrete to be measured is uniformly filled into cylinder from the upper end opening of the cylinder；
D, the lower part screw rod of the built-in fitting is inserted into concrete to be measured from the upper end opening of the cylinder；
E, support rod is installed on the base, the transmission lever is set in the lantern ring on the support rod, and is made described
The lower end of transmission lever is resisted against the top of the built-in fitting；
F, amesdial is installed on the support rod, makes the gauge rod of the amesdial and the upper-end contact of the transmission lever, adjust
The pointer of the amesdial is to median location；
G, amesdial reading is periodically read, obtains the linear deformation curves of volume of concrete to be measured.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910494827.5A CN110243268B (en) | 2019-06-10 | 2019-06-10 | Concrete volume linear deformation tester and testing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910494827.5A CN110243268B (en) | 2019-06-10 | 2019-06-10 | Concrete volume linear deformation tester and testing method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110243268A true CN110243268A (en) | 2019-09-17 |
| CN110243268B CN110243268B (en) | 2021-06-04 |
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ID=67886221
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910494827.5A Active CN110243268B (en) | 2019-06-10 | 2019-06-10 | Concrete volume linear deformation tester and testing method |
Country Status (1)
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112485189A (en) * | 2020-11-23 | 2021-03-12 | 中建商品混凝土有限公司 | Device and method for testing volume compressibility of lightweight aggregate concrete mixture |
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| CN110243268B (en) | 2021-06-04 |
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