CN209148574U - A kind of test device of automatic measurement free swelling rate - Google Patents
A kind of test device of automatic measurement free swelling rate Download PDFInfo
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- CN209148574U CN209148574U CN201821597841.5U CN201821597841U CN209148574U CN 209148574 U CN209148574 U CN 209148574U CN 201821597841 U CN201821597841 U CN 201821597841U CN 209148574 U CN209148574 U CN 209148574U
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- groove
- swelling rate
- test device
- free swelling
- automatic measurement
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Abstract
The utility model discloses a kind of test device of automatic measurement free swelling rate, including pedestal, the pedestal is equipped with a plurality of parallel groove for being used to place test block, two laterally inboard faces of the groove and inner bottom surface are equipped with flexible/elastic protrusion, and being fixed on the groove on one side of the protrusion, another side and test block are inconsistent；The both ends of the groove are equipped with the baffle for fixing digital display dial gauge；The baffle side position opposite with the groove is equipped with to perforation, and the baffle upper surface is equipped with the threaded hole for being through to described pair of perforation；The table bar of the digital display dial gauge passes through described pair of perforation, and fastening bolt compatible with the threaded hole passes through the threaded hole and the digital display dial gauge is fixed on the baffle；The digital display dial gauge is connected by data line with data collection processor.The test device of the utility model can continuously conserve detection, guarantee that the free wxpansion to test sample is unrestricted, test accuracy is good, error is small and easy to operate.
Description
Technical field
The utility model belongs to experiment the field of test technology, and in particular to a kind of test dress of automatic measurement free swelling rate
It sets.
Background technique
Currently, anti-crack and anti-seepage has become the weight in each Construction of Engineering Projects with the large volume of concrete structures
Point work.High performance concrete is mixed into concrete enhances antimitotic agent, improves and excite the work of concrete Minerals admixture
Property, the microcrack between Behavior of Hardened Cement Paste and aggregate particle in transition region is reduced, concrete structure compactness is improved, reaches anti-crack and anti-seepage
Purpose.However, the cracking resistance of characterization high performance concrete enhancing antimitotic agent, key index is exactly its free swelling rate.
According to JC/T 313-2009 test free swelling rate during, find existing common test mode exist with
Lower disadvantage: first, test data is the time point data of each age, can not while maintenance while follow-on test；Second, it tests every time
In the process, it needs repeatedly to use standard rod suppressed zero, the stability of standard rod is affected to data；Third, multiple taking and placing examination
Block, manual operation is cumbersome, is easy the ailhead that collides with during taking and placing, and, clean-up performance more demanding to test block ailhead clean-up performance
Directly affect the accuracy of test；4th, in the case that test is placed in test block vertically, vertical extension is affected by gravity, nothing
Expansion character of the method accurate characterization test block under free maintenance state；Lead to test that continuity is poor, operation is more complex, test is quasi-
The problems such as really property is poor.
CN201420064287.X discloses a kind of concrete free swelling rate and shrinking percentage test device, including die trial,
Two pieces of end anchorage brackets and two displacement detectors, die trial are equipped with test trough, and two pieces of end anchorage brackets are placed in survey
In experimental tank, also there are two pieces of flexible boards, and two pieces of flexible boards are placed in test trough, and respectively with two laterally inboards of test trough
Face is close to, and two end faces of two pieces of end anchorage brackets offset with corresponding flexible board respectively, and two pieces of end anchorage brackets
Top is equipped with the detection end stretched in longitudinal direction, and two displacement detectors offset with corresponding detection end respectively.This is practical
Detect to new type of continuous the deformation performance of concrete, but apparatus structure is relative complex and to can not achieve synchronization multiple groups test block same
When test.
Summary of the invention
The purpose of this utility model is in view of the problems of the existing technology, to provide a kind of automatic measurement free swelling rate
Test device can continuously conserve detection, ensure the free wxpansion in glue sand test block each face in maintenance processes, and it is accurate to improve test
Property, reduce error and easy to operate.
In order to achieve the above purposes, the technical solution adopted by the utility model is:
A kind of test device of automatic measurement free swelling rate, including pedestal, the pedestal are equipped with a plurality of be arranged in parallel
And for placing the groove of test block, flexible/elastic protrusion is equipped on two laterally inboard faces of the groove and inner bottom surface,
It is described protrusion be fixed on the groove on one side, another side and test block it is inconsistent；The both ends of the groove are equipped with for fixing
The baffle of digital display dial gauge；The digital display dial gauge is fixed on the baffle by fastening bolt, and the digital display dial gauge is used
In the measurement for carrying out free swelling rate to the test block in the groove；The digital display dial gauge passes through at data line and data acquisition
Device is managed to be connected.
The baffle is fixed on the base by bolt or deck groove, and free swelling rate is tested test block demoulding
Afterwards, it is put into the groove, avoids the positional shift of test block during the test；The table bar of the digital display dial gauge is passed through described
The threaded hole is passed through to perforation, fastening bolt compatible with the threaded hole, so that the digital display dial gauge is fixed on
On the baffle, and the depth of described pair of perforation is inserted into adjust the digital display dial gauge by the table bar of the digital display dial gauge
Fixation position then will be described so that the detection end of the digital display dial gauge contacts with test block head surface and have reading
The reading zero setting of digital display dial gauge.During test block is conserved in the groove, the digital display dial gauge pair at test block both ends
The length variation of test block carries out real-time measurement, and the test data of any time is transferred to the data collection processor and is carried out
Storage and analysis；In this way, just realizing the continuous measurement to test block free swelling rate.The data collection processor is to measuring
Data generate continuous deformation figure after being handled, to monitor the free swelling rate change procedure of test block in real time；For test block
Abnormal conditions in maintenance processes can be seen by the data and curves shown on display in the data collection processor
It examines.The setting of the flexible/elastic protrusion ensures test block in the groove, and the free wxpansion step of test block side and bottom limits
System；And the protrusion holds up two transverse sides of test block and bottom surface, so that air is filled between test block and the groove, from
And increase the contact area of two horizontal sides of test block, bottom surface and air；When reduction test block and the groove directly contact, two
Heat exchange Q2 between the bottom surface and the groove of heat exchange Q1, test block between transverse side and the groove, with upper surface
Heat exchange Q3 gap between air is excessive, caused by test block in maintenance processes side, bottom surface expansion is different and causes
The ailhead and the detection end on the same line, do not influence the accuracy of test data.The baffle by bolt or
Deck groove is fixed on the base.
The test of the utility model free swelling rate suitable for JC/T 313-2009, test block are the test block of glue sand, test block rule
Lattice size is set.
Preferably, the pedestal is Filled Rectangle iron plate, length 340mm, width 200mm.
Preferably, the pedestal is equipped with three parallel grooves.
It is highly preferred that three grooves are equidistantly arranged in parallel.The setting of three grooves, can be in the same time
It is interior, three groups of test blocks of same glue sand sample are carried out while being tested, to reduce in retest because of factors such as environment temperature, humidity
Error caused by variation；It is higher compared to traditional primary only one test block of test, accuracy of test data.
Preferably, the width of the groove is 28mm, a height of 3mm.
Preferably, the diameter of described pair of perforation is 8mm, and the diameter of the fastening bolt is 5mm.
Preferably, the digital display dial gauge be stainless steel material, measurement range be 0~5mm, measurement accuracy 0.001mm,
The length for detecting end is 50mm.
Preferably, the pedestal is equipped with temperature sensor and humidity sensor, the temperature sensor, humidity sensor
It is connected with the data collection processor.
Preferably, the groove inner bottom surface is equipped with saw-toothed first protrusion, and the both ends of first protrusion are by rigid
Property material be made, it is described first protrusion centre be fabricated from a flexible material；The center in two laterally inboard faces of the groove is set
There is the second protrusion made of rigid material, second exterior is symmetrical arranged the third protrusion of elasticity.Described first is convex
The both ends risen are made to guarantee that enough support forces are arranged at the bottom of test block of rigid material, and first protrusion is intermediate by flexible material
Material, which is made, guarantees that the bottom of test block can be with free wxpansion；It is enough to guarantee that the side of test block has for second protrusion made of rigid material
Support force, and the third protrusion of elasticity then guarantees that the side of test block can be with free wxpansion.
It is highly preferred that the third protrusion is spring.
Compared with prior art, the utility model has the beneficial effects that
1, the utility model places test block using groove, and digital display dial gauge is arranged at the both ends of the groove, so that
Real-time measurement can be achieved during test block continuously conserves in the base groove, reduce traditional test and repeatedly pick and place examination in the process
Block measures bring error；
2, the utility model uses data collector, is analyzed in real time the data that digital display dial gauge measures, entire to survey
Examination process is more accurate and easy to operate, effectively reduces the error of manual operation and test data；
3, flexible/elastic protrusion is equipped in the groove of the utility model, it can increase test block side, bottom surface and air
Contact area is reduced on the contact surface that test block is directly contacted with groove, and the expansion of test block is swollen because of caused by the difference of heat transfer
Swollen rate is inconsistent；The free wxpansion that can also be reduced when test block is directly contacted with groove is limited, further increases data test
The accuracy of process.
Detailed description of the invention
Fig. 1 shows for a kind of structure of the test device of automatic measurement free swelling rate described in the utility model embodiment 1
It is intended to；
Fig. 2 is baffle in a kind of test device of automatic measurement free swelling rate described in the utility model embodiment 1
Cross section structure schematic diagram；
Fig. 3 is a kind of test device further groove of automatic measurement free swelling rate described in the utility model embodiment 1
Cross section structure schematic diagram；
In figure: 1, pedestal；2, groove；201, the first protrusion；202, the second protrusion；3, baffle；301, to perforation； 302,
Threaded hole；4, fastening bolt；5, digital display dial gauge；501, table bar；502, end is detected；6, data line；7, data acquisition process
Device；8, test block；801, ailhead.
Specific embodiment
Below in conjunction with the attached drawing in the utility model, the technical solution of the utility model is clearly and completely retouched
It states, it is clear that the described embodiments are only a part of the embodiments of the utility model, instead of all the embodiments.Based on this
Embodiment in utility model, those of ordinary skill in the art under the conditions of not making creative work it is obtained it is all its
Its embodiment, fall within the protection scope of the utility model.
Embodiment 1
A kind of test device of automatic measurement free swelling rate, is illustrated in conjunction with FIG. 1 to FIG. 3 described in the present embodiment,
Including pedestal 1, pedestal 1 is Filled Rectangle iron plate, length 340mm, width 200mm；Pedestal 1 is equipped with three and equidistantly puts down
Row setting is used to place test block 8 and fix the groove 2 of its position, and 2 width of groove is 28mm, a height of 3mm；The inner bottom surface of groove 2
It is equipped with jagged first protrusion 201, the both ends of the first protrusion are made of steel, and the first protrusion is intermediate to be made of rubber；It is recessed
The center in two laterally inboard faces of slot 2 is equipped with the second protrusion 202 made of steel, and the second raised 202 both sides are symmetrical arranged
The third protrusion of elasticity, the third protrusion is specially spring；The both ends of groove 2 are equipped with the gear for fixing digital display dial gauge 5
Plate 3；It is 8mm to perforation 301 that the side of baffle 3 position opposite with groove 2, which is equipped with diameter, and 3 upper surface of baffle, which is equipped with, to be run through
To the threaded hole 302 for being 5mm to the diameter of perforation 301；The table bar 501 of digital display dial gauge 5 is passed through to perforation 301, with threaded hole
302 compatible fastening bolts 4 pass through threaded hole 302 and digital display dial gauge 5 are fixed on baffle 3；Digital display dial gauge 5 passes through number
It is connected according to line 6 with data collection processor 7.
Digital display dial gauge 5 is stainless steel material, and measurement range is 0~5mm, and measurement accuracy 0.001mm detects end
Length 50mm.
When specific implementation:
1, it after free swelling rate being tested 8 demoulding of test block, is put into groove 2；
2, the table bar 501 of digital display dial gauge 5 is passed through and passes through threaded hole 302 to perforation 301, by fastening bolt 4, make total
The detection end 502 of aobvious amesdial 5 contacts and has reading with 801 surface of ailhead, then by the reading zero setting of digital display dial gauge 5；
3, during test block 8 is conserved in groove 2, the digital display dial gauge 5 at 8 both ends of test block changes the length of test block 8
Real-time measurement is carried out, and the test data of any time is transferred to data collection processor 7 and is stored and is analyzed, data are adopted
Set processor 7 generates continuous deformation figure after handling the data measured, to monitor the free swelling rate of test block 8 in real time
Change procedure.
Embodiment 2
The present embodiment is substantially the same manner as Example 1, the difference is that, pedestal 1 is equipped with temperature sensor and humidity passes
Sensor, the temperature sensor, humidity sensor are connected with data collection processor 7.
Specific implementation step is substantially the same manner as Example 1, the difference is that:
4, the temperature sensor, humidity sensor send the temperature and humidity implementation tested in environment to data acquisition process
Device 7, data collection processor 7 store the free swelling rate of the temperature of any time environment, humidity and test block 8, just
It is monitored in free swelling rate and the ambient environment variation to test block 8.
While there has been shown and described that the embodiments of the present invention, for the ordinary skill in the art,
It is understood that these embodiments can be carried out with a variety of variations in the case where not departing from the principles of the present invention and spirit, repaired
Change, replacement and variant, the scope of the utility model is defined by the appended claims and the equivalents thereof.
Claims (10)
1. a kind of test device of automatic measurement free swelling rate, which is characterized in that including pedestal, the pedestal is equipped with a plurality of
It is disposed in parallel and for placing the groove of test block, be all provided on two laterally inboard faces of the groove and inner bottom surface it is flexible/
Elastic bumps, it is described protrusion be fixed on the groove on one side, another side and test block it is inconsistent；The both ends of the groove are equipped with
For fixing the baffle of digital display dial gauge；The baffle side position opposite with the groove is equipped with to perforation, the baffle
Upper surface is equipped with the threaded hole for being through to described pair of perforation；The table bar of the digital display dial gauge passes through described pair of perforation, and described
The compatible fastening bolt of threaded hole passes through the threaded hole and the digital display dial gauge is fixed on the baffle；The digital display
Amesdial is connected by data line with data collection processor.
2. a kind of test device of automatic measurement free swelling rate according to claim 1, which is characterized in that the pedestal
For Filled Rectangle iron plate, length 340mm, width 200mm.
3. a kind of test device of automatic measurement free swelling rate according to claim 1, which is characterized in that the pedestal
It is equipped with three parallel grooves.
4. a kind of test device of automatic measurement free swelling rate according to claim 3, which is characterized in that described in three
Groove is equidistantly arranged in parallel.
5. a kind of test device of automatic measurement free swelling rate according to claim 1, which is characterized in that the groove
Width be 28mm, a height of 3mm.
6. a kind of test device of automatic measurement free swelling rate according to claim 1, which is characterized in that described pair is worn
The diameter in hole is 8mm, and the diameter of the fastening bolt is 5mm.
7. a kind of test device of automatic measurement free swelling rate according to claim 1, which is characterized in that the digital display
Amesdial is stainless steel material, and measurement range is 0~5mm, measurement accuracy 0.001mm, and the length for detecting end is 50mm.
8. a kind of test device of automatic measurement free swelling rate according to claim 1, which is characterized in that the pedestal
It is equipped with temperature sensor and humidity sensor, the temperature sensor, humidity sensor and the data collection processor phase
Even.
9. a kind of test device of automatic measurement free swelling rate according to claim 1, which is characterized in that the groove
Inner bottom surface is equipped with saw-toothed first protrusion, and the both ends of first protrusion are made of rigid material, first protrusion
Centre be fabricated from a flexible material；The center in two laterally inboard faces of the groove is equipped with second convex made of rigid material
It rises, second exterior is symmetrical arranged the third protrusion of elasticity.
10. a kind of test device of automatic measurement free swelling rate according to claim 9, which is characterized in that described
Three protrusions are spring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821597841.5U CN209148574U (en) | 2018-09-29 | 2018-09-29 | A kind of test device of automatic measurement free swelling rate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821597841.5U CN209148574U (en) | 2018-09-29 | 2018-09-29 | A kind of test device of automatic measurement free swelling rate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209148574U true CN209148574U (en) | 2019-07-23 |
Family
ID=67268449
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821597841.5U Active CN209148574U (en) | 2018-09-29 | 2018-09-29 | A kind of test device of automatic measurement free swelling rate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209148574U (en) |
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2018
- 2018-09-29 CN CN201821597841.5U patent/CN209148574U/en active Active
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