CN204594987U - A kind of improved vertical contact method concrete shrinkage measuring instrument - Google Patents

A kind of improved vertical contact method concrete shrinkage measuring instrument Download PDF

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Publication number
CN204594987U
CN204594987U CN201520311095.9U CN201520311095U CN204594987U CN 204594987 U CN204594987 U CN 204594987U CN 201520311095 U CN201520311095 U CN 201520311095U CN 204594987 U CN204594987 U CN 204594987U
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CN
China
Prior art keywords
concrete shrinkage
mounting bracket
measuring instrument
vertical contact
improved vertical
Prior art date
Application number
CN201520311095.9U
Other languages
Chinese (zh)
Inventor
陈光耀
张细和
李勇
田小岩
王建琦
谭建军
杨金娣
Original Assignee
中国电建集团贵阳勘测设计研究院有限公司
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Priority to CN201520311095.9U priority Critical patent/CN204594987U/en
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Publication of CN204594987U publication Critical patent/CN204594987U/en

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Abstract

A kind of improved vertical contact method concrete shrinkage measuring instrument that the utility model provides, comprise base, studdle, mounting bracket, studdle is vertically fixed on base, mounting bracket is arranged on studdle by sliding sleeve, the upper and lower two ends of sliding sleeve are fixed by locking member, are fixed in the through hole of mounting bracket by clock gauge by lock-screw.The utility model can in an experiment fast, the changing value of Measurement accuracy concrete shrinkage test specimen, avoid concrete and carry the error brought.Do not need accuracy calibration.

Description

A kind of improved vertical contact method concrete shrinkage measuring instrument

Technical field

The utility model relates to a kind of concrete shrinkage measuring instrument, particularly relates to a kind of improved vertical contact method concrete shrinkage measuring instrument.

Background technology

The instrument of current measurement concrete shrinkage has three kinds, i.e. arc spiral dial gauge, comparator and horizontal concrete drying shrinkage instrument.Although these instruments have mechanical type or electronic type, metering system is all similar, is all by test specimen pendulum on instrument, then by the ferrule at instrument aligning concrete shrinkage test specimen two ends, carries out reading.

Because concrete shrinkage test is higher to environmental requirement, therefore directly can not measure in drying shrinkage room when testing.According to current existing measuring equipment, need test specimen to take out from constant temperature drying shrinkage room to be placed on reading on instrument when measuring concrete shrinkage.So just there will be some problem following, the degree of accuracy of measurement data can be affected.

1, because concrete shrinkage test specimen is comparatively large, every block is all at about 12KG, and therefore test specimen is heavier, and often group will have 3 pieces of test specimens in addition, so the workload of moving test specimen can be very heavy.

2, concrete shrinkage test specimen maximum length has 51.5cm, and therefore test specimen is comparatively large, and there will be the situation of colliding with unavoidably when moving test specimen, if broken by the metal probe at concrete sample two ends, then this test specimen will be scrapped, and greatly cause damage to test figure.Again because concrete shrinkage testing requirements precision higher (measuring accuracy is 0.01mm), even if so some small touchings distortion, the degree of accuracy of test findings all can be had influence on.

3, because the instrument measuring concrete shrinkage is at present all measure the probe at test specimen two ends, so need built-in metal to pop one's head in when shaping test piece.But in actual mechanical process, easily there is the phenomenon that pre-buried mistake is shallow or excessively dark in the more difficult control of the pre-buried degree of depth of probe.If cross shallow, then test specimen entire length is long, easily exceeds measurement range, and due to pre-buried excessively shallow, concrete parcel is insufficient, there will be the phenomenon of popping one's head in and coming off; If cross dark, probe all can be wrapped by concrete, and surveying instrument then cannot touch probe, thus cannot measure.

Utility model content

For solving the problems of the technologies described above, the utility model provides a kind of improved vertical contact method concrete shrinkage measuring instrument, this improved vertical contact method concrete shrinkage measuring instrument does not need built-in metal to pop one's head in, avoid the error brought when metal probe is installed, decrease former test apparatus in handling process, be out of shape the error brought, do not need accuracy calibration, measure test figure accurately.

The utility model is achieved by the following technical programs.

A kind of improved vertical contact method concrete shrinkage measuring instrument, it is characterized in that: comprise base, studdle, mounting bracket, studdle is vertically fixed on base, mounting bracket is arranged on studdle by sliding sleeve, the upper and lower two ends of sliding sleeve are fixed by locking member, are fixed in the through hole of mounting bracket by clock gauge by lock-screw.

Described mounting bracket is provided with the through hole for installing clock gauge.

Described mounting bracket has yi word pattern groove in the other direction along sliding sleeve, and yi word pattern groove is through through hole center.

On described mounting bracket, yi word pattern groove end adopts lock-screw to be locked by yi word pattern groove.

Described locking member is nut.

Corner, described base bottom is provided with leg.

The beneficial effects of the utility model are:

Compared with prior art, the vertical contact method concrete shrinkage measuring instrument that the utility model provides has a little following relative to traditional instrument:

1, because test specimen is directly to being placed on base plate, metal probe is not had, so measuring accuracy is higher.

2, because test specimen vertically stands up on base plate, under the effect of test specimen own wt, test piece end and base plate are against more abundant.

3, because test specimen is fixedly placed on base plate, therefore do not need to carry out accuracy calibration because of on probation for a long time.

Accompanying drawing explanation

Fig. 1 is the utility model front view.

Fig. 2 is vertical view of the present utility model.

Fig. 3 is the front view after the utility model loads onto concrete shrinkage test specimen.

In figure: 1-base plate, 2-studdle, 3-mounting bracket, 4-locking member, 5-lock-screw, 6-clock gauge, 7-leg, 8-yi word pattern groove, 9-through hole, 10-glass plate, 11-concrete shrinkage test specimen, 12-sliding sleeve.

Embodiment

Further describe the technical solution of the utility model below, but described in claimed scope is not limited to.

The improved vertical contact method concrete shrinkage measuring instrument that the utility model provides, comprise base 1, studdle 2, mounting bracket 3, it is characterized in that: studdle 2 is vertically fixed on base 1, mounting bracket 3 is arranged on studdle 2 by sliding sleeve 12, sliding sleeve about 12 two ends are fixed by locking member 4, are fixed in the through hole 9 of mounting bracket 3 by clock gauge 6 by lock-screw 5.The changing value of concrete sample is drawn by the reading of clock gauge.

Described mounting bracket is provided with the through hole 9 for installing clock gauge 6.Be convenient to the installation of clock gauge 6.

Described mounting bracket 3 has yi word pattern groove 8 in the other direction along sliding sleeve, and yi word pattern groove 8 is through through hole 9 center.Yi word pattern groove 8 end adopts lock-screw 5 to be locked by yi word pattern groove 8.Be convenient to the fixing of clock gauge 6.

In order to better adjust mounting bracket 3, described locking member 4 is nut.

Corner, described base 1 bottom is provided with leg 7.Measuring instrument is placed more steady, alleviate the weight of measuring instrument.

When carrying out concrete shrinkage test, first improved vertical contact method concrete shrinkage instrument support is placed in constant temperature drying shrinkage room, again concrete shrinkage test specimen is vertically stood on base 1, then glass sheet 10 is placed on test specimen 11, afterwards fixed knob 4 is modulated about 3CM place above glass sheet 10, subsequently clock gauge 6 is inserted from fixed knob 4, prop up glass sheet 10, fixed knob 4 is tightened, carrying out reading to observing clock gauge 6 during the length of time, the changing value of concrete shrinkage test specimen can be measured by reading accurately.

Claims (5)

1. an improved vertical contact method concrete shrinkage measuring instrument, comprise base (1), studdle (2), mounting bracket (3), it is characterized in that: studdle (2) is vertically fixed on base (1), mounting bracket (3) is arranged on studdle (2) by sliding sleeve (12), sliding sleeve (12) up and down two ends is fixed by locking member (4), is fixed in the through hole (9) of mounting bracket (3) by clock gauge (6) by lock-screw (5).
2. improved vertical contact method concrete shrinkage measuring instrument as claimed in claim 1, it is characterized in that: described mounting bracket (3) has yi word pattern groove (8) in the other direction along sliding sleeve, and yi word pattern groove (8) is through through hole (9) center.
3. improved vertical contact method concrete shrinkage measuring instrument as claimed in claim 1, is characterized in that: upper yi word pattern groove (8) end of described mounting bracket (3) adopts lock-screw (5) to be locked by yi word pattern groove (8).
4. improved vertical contact method concrete shrinkage measuring instrument as claimed in claim 1, is characterized in that: described locking member (4) is nut.
5. improved vertical contact method concrete shrinkage measuring instrument as claimed in claim 1, is characterized in that: described base (1) corner, bottom is provided with leg (7).
CN201520311095.9U 2015-05-14 2015-05-14 A kind of improved vertical contact method concrete shrinkage measuring instrument CN204594987U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201520311095.9U CN204594987U (en) 2015-05-14 2015-05-14 A kind of improved vertical contact method concrete shrinkage measuring instrument

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201520311095.9U CN204594987U (en) 2015-05-14 2015-05-14 A kind of improved vertical contact method concrete shrinkage measuring instrument

Publications (1)

Publication Number Publication Date
CN204594987U true CN204594987U (en) 2015-08-26

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CN201520311095.9U CN204594987U (en) 2015-05-14 2015-05-14 A kind of improved vertical contact method concrete shrinkage measuring instrument

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105180745A (en) * 2015-10-10 2015-12-23 中国电建集团贵阳勘测设计研究院有限公司 Sliding concrete prism test alkali activity micrometer
CN105717283A (en) * 2016-01-28 2016-06-29 山东大学 Cement mortar drying shrinkage testing frame and testing method
CN106969693A (en) * 2017-03-24 2017-07-21 北京科技大学 A kind of expansion filling body test block expansion rate determines device
CN107514963A (en) * 2017-08-25 2017-12-26 中国电建集团贵阳勘测设计研究院有限公司 A kind of concrete carbonization depth analyzer

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105180745A (en) * 2015-10-10 2015-12-23 中国电建集团贵阳勘测设计研究院有限公司 Sliding concrete prism test alkali activity micrometer
CN105717283A (en) * 2016-01-28 2016-06-29 山东大学 Cement mortar drying shrinkage testing frame and testing method
CN106969693A (en) * 2017-03-24 2017-07-21 北京科技大学 A kind of expansion filling body test block expansion rate determines device
CN106969693B (en) * 2017-03-24 2020-02-07 北京科技大学 Expansion rate measuring device for test block of expansion filling body
CN107514963A (en) * 2017-08-25 2017-12-26 中国电建集团贵阳勘测设计研究院有限公司 A kind of concrete carbonization depth analyzer

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