CN207214970U - A kind of concrete expansion, shrinkage test length measuring instrument - Google Patents
A kind of concrete expansion, shrinkage test length measuring instrument Download PDFInfo
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- CN207214970U CN207214970U CN201721268763.XU CN201721268763U CN207214970U CN 207214970 U CN207214970 U CN 207214970U CN 201721268763 U CN201721268763 U CN 201721268763U CN 207214970 U CN207214970 U CN 207214970U
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- dial holder
- length measuring
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Abstract
The utility model discloses a kind of concrete expansion, shrinkage test length measuring instrument, including full-length bar and base, two guide rails are fixed with base, the bottom that piece fixture and piece fixture are provided between guide rail is arranged on base, piece fixture is provided with test specimen fastener, the top of piece fixture is provided with locator and locator is fixed on base, the both ends of guide rail are mounted on the positioning vernier that can be slided on guide rail and slide dial holder and position vernier positioned at the inner side for sliding dial holder, slide dial holder and are provided with amesdial.The utility model goes for the precision measurement of length of different size concrete sample by changing piece fixture, without special length measuring apparatus, strong applicability, different tests, the length of different size concrete sample can be accurately measured on an instrument, the standardization of different size concrete sample LENGTH MEASUREMENT TEST can be ensured and unitized, it is ensured that the uniformity and accuracy of measurement data.
Description
Technical field
The utility model belongs to construction material detection device technical field, and in particular to a kind of concrete expansion, shrinks examination
Test length measuring instrument.
Background technology
In the experiment of concrete performance and its composition material performance, there are many experiments to be required for the length for determining test specimen to become
Change, such as：The shrinkage test of concrete is to judge experiment important in concrete long-term behaviour and endurance quality, sand, building stones
Basic active experiment is to judge sand, the important tests of stone quality, and limited expansion rate experiment is to judge the weight of cement expansive material performance
Test.These experiments are all the length changes by determining concrete sample, to judge whether its performance meets code requirement,
But because the sample diversified in specifications of concrete sample, the concrete sample of different size need to be surveyed by special length measuring apparatus
Determine the length of concrete sample, and the process of its measure is also relatively complicated.
Utility model content
The purpose of this utility model is to solve technical problem present in prior art, there is provided it is a kind of it is simple in construction,
Easy to operate, data are accurate and that the concrete of different size concrete sample length can be accurately measured on an instrument is swollen
Swollen, shrinkage test length measuring instrument.
In order to achieve the above object, the utility model uses following technical scheme：A kind of concrete expansion, shrinkage test length
Measuring instrument, including full-length bar and base are spent, two guide rails are fixed with the base, being provided with test specimen between the guide rail presss from both sides
The bottom of tool and piece fixture is arranged on base, and the piece fixture is provided with test specimen fastener, the piece fixture
Top is provided with locator and locator is fixed on base, and the both ends of the guide rail are mounted on the positioning that can be slided on guide rail
Vernier and slip dial holder and positioning vernier are located at the inner side for sliding dial holder, and the slip dial holder is provided with thousand points
Table.
Further, the positioning vernier is provided with positioning vernier fixed knob.
Further, the slip dial holder is provided with dial holder fixed knob.
Further, the test specimen fastener includes four adjustment knobs being arranged on piece fixture biside plate.
Further, the locator is laser locator.
The utility model has the advantages that compared with the prior art：Concrete expansion of the present utility model, shrink examination
Testing length measuring instrument mainly includes full-length bar, base, guide rail, piece fixture, test specimen fastener, locator, positioning trip
Mark, dial holder and amesdial are slided, it sets two amesdials in left and right on the slip dial holder at guide rail both ends, eliminates
The step of concrete sample end points is to zero, reduces the levelling of concrete sample position and require, accelerate the speed of measurement, and utilize
The distance between fixed two positioning vernier of full-length bar gauge, full-length bar are also to determine the amesdial reading zero of left and right two
Full-length correcting member, while pass through the position that locator and test specimen fastener adjust concrete sample center line, it is ensured that
The precision of measurement, it is easy to operate.In addition, the utility model goes for different size concrete by changing piece fixture
The precision measurement of length of test specimen, without special length measuring apparatus, strong applicability, can accurately it be measured on an instrument different
Experiment, the length of different size concrete sample, can ensure the standardization of different size concrete sample LENGTH MEASUREMENT TEST
With it is unitized, it is ensured that the uniformity and accuracy of measurement data.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model.
The utility model reference implication is as follows：1st, base；2nd, guide rail；3rd, dial holder is slided；4th, amesdial；5th, it is fixed
Position vernier；6th, full-length bar；7th, locator；8th, piece fixture；9th, concrete sample；301st, dial holder fixed knob；
501st, vernier fixed knob is positioned；801st, knob is adjusted.
Embodiment
The utility model is described in further detail with reference to the accompanying drawings and detailed description.
As described in Figure 1, a kind of concrete expansion, shrinkage test length measuring instrument, including full-length bar 6 and base 1, bottom
Two guide rails 2 are fixed with seat 1, the bottom that piece fixture 8 and piece fixture 8 are provided between guide rail 2 is arranged on base 1, examination
Part fixture 8 is provided with test specimen fastener, and test specimen fastener includes four adjustment rotations being arranged on the biside plate of piece fixture 8
Button 801, the top of piece fixture 8 is provided with locator 7 and locator 7 is fixed on base 1, and locator 7 is laser locator, swashs
Light-seeking device can provide a laser sight line perpendicular to base 1, can be by rotating adjustment knob 801 by concrete sample 9
The adjustment of center line and laser sight line overlap, the both ends of guide rail 2 are mounted on the He of positioning vernier 5 that can be slided on guide rail 2
Slide dial holder 3 and position vernier 5 positioned at the inner side for sliding dial holder 3, slip dial holder 3 is provided with amesdial 4, fixed
Position vernier 5 is provided with positioning vernier fixed knob 501, slides dial holder 3 and is provided with dial holder fixed knob 301, standard
Length rod 6 is used to provide the distance between two positioning verniers 5.
The concrete expansion, the measuring method of shrinkage test length measuring instrument comprise the following steps：
A, prepared by concrete sample：By concrete test code requirement, by the good concreting of mixing to corresponding examination
In mould, the concrete sample 9 of dimension is fabricated to., should be according to when needing to carry out concrete shrinkage experiment《Normal concrete
Long-term behaviour and endurance quality test method standard》（GB/T50082-2009）Requirement, manufactured size is 100mm × 100mm
× 515mm prism concrete sample 9, every group should be 3 concrete samples 9, and pre-buried by not at the both ends of concrete sample 9
Become rusty horizontal shrinkage test gauge head made of steel or other non-corrosive materials.When needing to carry out the basic active experiment of sand, stone aggregate,
Should be according to《Regular concrete sand, stone quality and test method standard》（JGJ52-2006）Requirement, manufactured size 25mm
× 25mm × 280mm prism concrete sample 9, every group should be 3 concrete samples 9, and pre- at the both ends of concrete sample 9
Bury the gauge head made of stainless steel material., should be according to when needing to carry out the experiment of cement expansive material limited expansion rate《Concrete
Swelling agent》（GB23439-2009）Requirement, make comprising limiter glue sand examination body, have 3 examination bodies for survey length, concrete
The total length of test specimen 9 is 158mm, and wherein glue sand portion size is 40mm × 40mm × 140mm.
B, piece fixture 8 is changed：Piece fixture 8 is selected according to the specification of concrete sample 9, and piece fixture 8 is installed
On base 1.
Amesdial is installed C,：Amesdial 4 is arranged on and slided on dial holder 3, it is firm to be fixedly clamped.
D, datum length is determined：
A, full-length bar 6 is installed in piece fixture 8, opens laser locator, rotation adjusts knob 801 by standard
The center line of length rod 6 and the laser sight line of laser locator are adjusted to overlapping.
B, while the dial holder fixed knob 301 and positioning vernier fixed knob 501 at the both ends of guide rail 2 are unscrewed, from guide rail 2
Dial holder 3 is slided in both ends to centre is mobile simultaneously, stops when being moved at the 1/2 of the range of amesdial 4, screws 2 liang of guide rail
The dial holder fixed knob 301 on dial holder 3 is slided at end, by positioning vernier 5 against dial holder 3 is slided, screws positioning
Vernier fixed knob 501, complete positioning vernier 5 and position.
C, dial holder fixed knob 301 is unscrewed, dial holder 3 will be slided close proximity to positioning vernier 5 and with amesdial 4
Full-length bar 6 is measured, the reading l of two amesdials 4 in record left and right0 is leftAnd l0 is right, electronic dial gauge such as is used, then
Reading can be reset, the reading l of the amesdial of left and right two 40 is leftAnd l0 is rightOr the distance between zero reading is full-length bar 6
Length L0。
E, the initial length of concrete sample 9 is measured：
A, unscrew adjustment knob 801 and remove full-length bar 6, concrete sample 9 is installed in piece fixture 8, beaten
Laser locator is driven, rotation adjustment knob 801 adjusts the laser sight line of the center line of concrete sample 9 and laser locator
To coincidence.
B, dial holder 3 will be slided close proximity to positioning vernier 5 and concrete sample 9 is measured with amesdial 4, remembered
The reading l of two amesdials 4 in record left and right1 is leftAnd l1 is right, calculate current reading l1With initial reading l0Between difference, current reading l1
Subtract initial reading l0For positive number when, illustrate the length of concrete sample 9 increase, current reading l1Subtract initial reading l0For negative when, illustrate mixed
The solidifying native length of test specimen 9 reduces, and the length of concrete sample 9 is：L1= L0+（l1 is left-l0 is left）+（l1 is right-l0 is right）.
F, concrete sample 9 is conserved and determines the length value of specific time interval：At the beginning of having measured concrete sample 9
Beginning length should be conserved again to concrete sample 9 on request immediately, according to different test requirements documents, by concrete sample 9
It is put into standard curing room or constant-temp. and-moisture maintenance is conserved, and according to the time point of regulation, from curing box or fog room
The length after measuring the deformation of its different larval instar is taken out, measuring method repeats E steps, the length of different time point and different conditions test specimens
For：Ln= L0+（lN is left-l0 is left）+（lN is right-l0 is right）.
G, test index is calculated：Length of the concrete sample 9 under different time points, different conditions is determined by above-mentioned steps,
The length measurements of concrete sample 9 under different time points, different conditions are obtained, according still further to corresponding experiment calculation method, are calculated
Go out the corresponding expansion rate of test specimen or shrinkage factor.
Claims (5)
1. a kind of concrete expansion, shrinkage test length measuring instrument, it is characterised in that：Including full-length bar（6）And base
（1）, the base（1）On be fixed with two guide rails（2）, the guide rail（2）Between be provided with piece fixture（8）And piece fixture
（8）Bottom be arranged on base（1）On, the piece fixture（8）It is provided with test specimen fastener, the piece fixture（8）'s
Top is provided with locator（7）And locator（7）It is fixed on base（1）On, the guide rail（2）Be mounted on can be in guide rail at both ends
（2）The positioning vernier of upper slip（5）With slip dial holder（3）And positioning vernier（5）Positioned at slip dial holder（3）It is interior
Side, the slip dial holder（3）It is provided with amesdial（4）.
2. a kind of concrete expansion according to claim 1, shrinkage test length measuring instrument, it is characterised in that：It is described fixed
Position vernier（5）It is provided with positioning vernier fixed knob（501）.
3. a kind of concrete expansion according to claim 1, shrinkage test length measuring instrument, it is characterised in that：The cunning
Dynamic dial holder（3）It is provided with dial holder fixed knob（301）.
4. a kind of concrete expansion according to claim 1, shrinkage test length measuring instrument, it is characterised in that：The examination
Part fastener includes being arranged on piece fixture（8）Four adjustment knobs on biside plate（801）.
5. a kind of concrete expansion according to claim 1, shrinkage test length measuring instrument, it is characterised in that：It is described fixed
Position device（7）For laser locator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721268763.XU CN207214970U (en) | 2017-09-29 | 2017-09-29 | A kind of concrete expansion, shrinkage test length measuring instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721268763.XU CN207214970U (en) | 2017-09-29 | 2017-09-29 | A kind of concrete expansion, shrinkage test length measuring instrument |
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| Publication Number | Publication Date |
|---|---|
| CN207214970U true CN207214970U (en) | 2018-04-10 |
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| CN201721268763.XU Active CN207214970U (en) | 2017-09-29 | 2017-09-29 | A kind of concrete expansion, shrinkage test length measuring instrument |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107514960A (en) * | 2017-09-29 | 2017-12-26 | 甘肃建科技术试验检测有限责任公司 | A kind of concrete expansion, shrinkage test length measuring instrument and measuring method |
| CN108535308A (en) * | 2018-04-14 | 2018-09-14 | 卢爱珠 | It is a kind of cold execution conditions under concrete shrinkage experimental rig |
-
2017
- 2017-09-29 CN CN201721268763.XU patent/CN207214970U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107514960A (en) * | 2017-09-29 | 2017-12-26 | 甘肃建科技术试验检测有限责任公司 | A kind of concrete expansion, shrinkage test length measuring instrument and measuring method |
| CN108535308A (en) * | 2018-04-14 | 2018-09-14 | 卢爱珠 | It is a kind of cold execution conditions under concrete shrinkage experimental rig |
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