CN110455169A - The Material shrinkage deformation test method of beam specimen - Google Patents
The Material shrinkage deformation test method of beam specimen Download PDFInfo
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- CN110455169A CN110455169A CN201910722725.4A CN201910722725A CN110455169A CN 110455169 A CN110455169 A CN 110455169A CN 201910722725 A CN201910722725 A CN 201910722725A CN 110455169 A CN110455169 A CN 110455169A
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- 239000000463 material Substances 0.000 title claims abstract description 31
- 238000010998 test method Methods 0.000 title claims abstract description 21
- 238000012360 testing method Methods 0.000 claims abstract description 103
- 238000012956 testing procedure Methods 0.000 claims abstract description 19
- 230000008602 contraction Effects 0.000 claims abstract description 12
- 230000002093 peripheral effect Effects 0.000 claims abstract description 5
- 239000011230 binding agent Substances 0.000 claims description 10
- 230000000694 effects Effects 0.000 claims description 6
- 239000004568 cement Substances 0.000 claims description 3
- 239000003292 glue Substances 0.000 claims description 3
- 230000001360 synchronised effect Effects 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 5
- 230000008859 change Effects 0.000 abstract description 4
- 230000008569 process Effects 0.000 abstract description 4
- 238000002360 preparation method Methods 0.000 abstract description 2
- 239000000203 mixture Substances 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000006870 function Effects 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000003763 carbonization Methods 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
Classifications
-
- 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
- G01B5/0002—Arrangements for supporting, fixing or guiding the measuring instrument or the object to be measured
- G01B5/0004—Supports
-
- 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
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/42—Road-making materials
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Medicinal Chemistry (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
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- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
, preparation beam specimen in a rectangular parallelepiped shape the present invention relates to the technical fields of building castoff, disclose the Material shrinkage deformation test method of beam specimen, including following testing procedure: 1)；2), beam specimen is horizontal is placed on testing stand, and the both ends of the long axis direction of beam specimen are respectively provided with test end face, fixes test end plate respectively on two test end faces；3) gauge head of amesdial is pressed on test end plate, the reading of amesdial is adjusted to big numerical digit and is set, and records the initial reading of amesdial by, the fixed and arranged amesdial outside the test end face of beam specimen；4), within the time of test, the same day reading of amesdial is read, the contraction distortion amount of beam specimen is obtained；Amesdial is set by the test end face peripheral hardware in beam specimen, when beam specimen is shunk, gauge head bar can then be moved, so that the numerical value of amesdial can then change, obtain the Material shrinkage deflection of beam specimen, entire test operation is simple, and operating process is also brief.
Description
Technical field
The invention patent relates to the technical fields of building castoff, become in particular to the Material shrinkage of beam specimen
Shape test method.
Background technique
The road foundation filled with the building castoff roadbed mixture of stabilized with inorganic binder and the road filled with clay
Road roadbed is similar, when encountering the ambient environmental factors such as humidity and temperature and changing, for filling the mixed of road foundation
Certain contraction distortion can be occurred by closing material.When mixture shrinks deformation, road foundation can then generate crack, rainwater energy
Entered in road foundation along crack, also, on road driving vehicle cyclic load, finally then cause the road of road
Face structural damage.Therefore, it is necessary to the shrinkages of the building castoff roadbed mixture to stabilized with inorganic binder to grind
Study carefully, provides theoretical direction for Practical Project.
Currently, dry shrink is drawn since the building castoff roadbed mixture moisture content of stabilized with inorganic binder changes
The mixture volume risen is shunk.The dry basic principle shunk is because of capillary tension effect, mineral crystal or gel
Intermediary water effect, absorption water and hydrone between power effect, carbonization dehydration caused by volume change.Specific manifestation is such as
Under:
For the ease of studying the roadbed contraction distortion without the inorganic binder based on building castoff, preparation is needed to be based on
The beam specimen of the inorganic binder of building castoff guarantees in the contraction distortion performance of experiment desk research beam specimen
In subsequent Practical Project, the road foundation for avoiding the inorganic binder based on building castoff from filling will not be gone out due to contraction distortion
The problem of existing pavement structure damage.
In the prior art, when testing in laboratory the Material shrinkage deformation of beam specimen, test process is cumbersome,
It is troublesome in poeration.
Summary of the invention
The purpose of the present invention is to provide the Material shrinkage deformation test methods of beam specimen, it is intended to solve the prior art
In, the Material shrinkage deformation test of beam specimen there is a problem of cumbersome and trouble.
The invention is realized in this way the Material shrinkage deformation test method of beam specimen, including following testing procedure:
1) cement, is added using the inorganic binder based on building castoff, prepares beam specimen in a rectangular parallelepiped shape；
2), the beam specimen is horizontal is placed on horizontally disposed testing stand, and the long axis of the beam specimen is in
It is horizontally disposed；The both ends of the long axis direction of the beam specimen are respectively provided with test end face, and the test end face is in a vertical shape；In
It is fixed respectively on two test end faces of the beam specimen to test end plate, test end plate arrangement in a vertical shape, the survey
End plate is tried with the beam specimen synchronous；
3), the fixed and arranged amesdial outside the test end face of the beam specimen, the amesdial has gauge head bar, described
The end of gauge head bar has gauge head；The gauge head of the amesdial is pressed on the test end plate, the gauge head bar is along institute
The long axis direction for stating beam specimen extends, and the reading of the amesdial is adjusted to big numerical digit and is set, and records the amesdial
Initial reading；
4), within the time of test, the same day reading of the amesdial is read daily, according to same day reading and initially
Reading, obtains the contraction distortion amount of the beam specimen.
Further, horizontally disposed track groove is provided on the testing stand, the width of the track groove is greater than institute
The width of beam specimen is stated, the length of the track groove is greater than the length of the track groove；In the testing procedure 2) in, it is described
Beam specimen is placed in the track groove, and the two sides of the beam specimen have side interval between the side wall of track groove respectively,
The test end face of the beam specimen is placed in the inside of the track groove.
Further, the bottom of the track groove has ponding layer.
Further, be provided with elastic strip in the side interval, the elastic strip along the beam specimen long axis
Direction extends, and the side of the elastic strip is fixed on the side wall of the track groove, when the beam specimen is placed in the track
After in slot, the other side of the elastic strip abuts the side of the beam specimen.
Further, in the testing procedure 3) in, fixing seat is set in the test end face peripheral hardware of the beam specimen, it is described
Adjustment structure is provided in fixing seat, one end of the adjustment structure is fixedly connected on the fixing seat, the adjustment structure
The other end be provided with fixing head, the amesdial is fixed in the fixing head, and the gauge head bar activity pass through it is described solid
Determine head；By adjusting the adjustment structure, so that the gauge head bar of the amesdial prolongs along the long axis direction of the beam specimen
It stretches.
Further, the adjustment structure includes the first rod piece and the second rod piece, first rod piece and the second rod piece
Between be provided with locking head；One end of first rod piece is fixedly connected with the fixing seat, the other end of first rod piece
It is connected on the locking head, one end of second rod piece is connected with the fixing head, and the other end of second rod piece connects
It connects on the locking head；The other end of the other end of first rod piece and second rod piece is in dislocation arrangement；Described
Testing procedure 3) in, after the amesdial is connected in fixing head, swing the opposite position of first rod piece and the second rod piece
It sets, after the gauge head bar of the amesdial extends along the long axis direction of the beam specimen, passes through the fixed institute of the locking head
State the relative position between the first rod piece and the second rod piece.
Further, the shape of the test end plate is consistent with the test shape of end face of the beam specimen；The survey
Trying end plate has towards the binding face for testing end face；In the testing procedure 2) in, in the binding face of the test end plate
It applies glue respectively at heart position and four angles, the binding face of the test end plate is fitted on test end face；The survey
Examination end plate has away from the face that compresses of test end face arrangement, and the center for compressing face, which has, compresses position, when the survey
After examination end plate is fitted on the test end face, the gauge head of the gauge head bar is pressed on described compress on position.
Further, described compress is arranged fluted on position, and the groove is hemispherical, and the gauge head, which has, to be pressed on
End is compressed in groove, it is described to compress that end is flat, and the end that compresses is embedded in the groove.
Further, there is through-hole, in the testing procedure 3 in the fixing head) in, the through-hole is along the beam type
The long axis direction of test specimen extends, and the gauge head bar has to wear wears section in the through hole, and the gauge head bar is worn in section
It is arranged with loose collar, the loose collar abuts the inner surface of the outer surface for wearing section and the through-hole respectively.
Further, the outer surface for wearing section is provided with annular groove, and the annular groove, which is looped around, described wears section
Periphery arrangement, and the length of the annular groove is greater than the width of the loose collar；The loose collar abuts the annular groove
Bottom.
Compared with prior art, the Material shrinkage deformation test method of beam specimen provided by the invention, by beam type
The test end face peripheral hardware of test specimen sets amesdial, bears against the test on test end face using the gauge head of the gauge head bar of two amesdials
End plate, so that the numerical value of amesdial can then change, obtains beam type examination in this way, gauge head bar can then move when beam specimen is shunk
The Material shrinkage deflection of part, entire test operation is simple, and operating process is also brief.
Detailed description of the invention
Fig. 1 is the flow diagram of the Material shrinkage deformation test method of beam specimen provided by the invention；
Fig. 2 is the equipment stereoscopic schematic diagram of the Material shrinkage deformation test method of beam specimen provided by the invention；
Fig. 3 is the schematic top plan view of testing stand provided by the invention；
Fig. 4 is the schematic internal view for wearing section and fixing head cooperation of gauge head bar provided by the invention.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to the accompanying drawings and embodiments, right
The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and
It is not used in the restriction present invention.
Realization of the invention is described in detail below in conjunction with specific embodiment.
The same or similar label correspond to the same or similar components in the attached drawing of the present embodiment；In description of the invention
In, it is to be understood that if there is the orientation or positional relationship of the instructions such as term " on ", "lower", "left", "right" for based on attached drawing institute
The orientation or positional relationship shown, is merely for convenience of description of the present invention and simplification of the description, rather than the dress of indication or suggestion meaning
It sets or element must have a particular orientation, be constructed and operated in a specific orientation, therefore describe the use of positional relationship in attached drawing
Language only for illustration, should not be understood as the limitation to this patent, for the ordinary skill in the art, can be with
The concrete meaning of above-mentioned term is understood as the case may be.
- 4 show referring to Fig.1, are preferred embodiment provided by the invention.
Beam specimen 200 provided in this embodiment be the inorganic binder based on building castoff made of, certainly,
It can be adapted for the test for the beam specimen 200 that other need test material contraction distortion.
The Material shrinkage deformation test method of beam specimen, including following testing procedure:
1) cement, is added using the inorganic binder based on building castoff, prepares beam specimen in a rectangular parallelepiped shape
200；
2), beam specimen 200 is horizontal is placed on horizontally disposed testing stand 100, and the long axis of beam specimen 200 is in
It is horizontally disposed, that is to say, that the length side of beam specimen 200 is placed on testing stand 100；The long axis side of beam specimen 200
To both ends be respectively provided with test end face, test end face it is in a vertical shape；It is solid respectively on two test end faces of beam specimen 200
Surely end plate is tested, end plate arrangement in a vertical shape is tested, in this way, since the test end face of test end plate and beam specimen 200 is fixed
Arrangement, thus, end plate is tested with 200 synchronous of beam specimen；
3), the fixed and arranged amesdial 107 outside the test end face of beam specimen 200, amesdial 107 have gauge head bar 106,
The end of gauge head bar 106 has gauge head；The gauge head of amesdial 107 is pressed on test end plate, gauge head bar 106 is tried along beam type
The long axis direction of part 200 extends, and the reading of amesdial 107 is adjusted to big numerical digit and is set, and records the initial read of amesdial 107
Number；
4), within the time of test, daily read amesdial 107 the same day reading, according to the same day reading and initial reading,
Obtain the contraction distortion amount of beam specimen 200.
When beam specimen 200 is shunk, gauge head bar 106 is then with movement, and then the reading of amesdial 107 can then be sent out
Changing changes according to the reading of amesdial 107, then can movable beam specimen 200 Material shrinkage deflection.
The Material shrinkage deformation test method of the beam specimen of above-mentioned offer, by the test end face of beam specimen 200
Outer setting amesdial 107 bears against the test end plate on test end face using the gauge head of the gauge head bar 106 of two amesdials 107,
In this way, gauge head bar 106 can then move when beam specimen 200 is shunk, so that the numerical value of amesdial 107 can then change, beam is obtained
The Material shrinkage deflection of formula test specimen 200, entire test operation is simple, and operating process is also brief.
Horizontally disposed track groove 108 is provided on testing stand 100, the width of track groove 108 is greater than beam specimen 200
Width, the length of track groove 108 is greater than the length of track groove 108；In the testing procedure 2) in, beam specimen 200 is placed in
Track groove 108, in this way, avoiding during the test, the phenomenon that beam specimen 200 deflects；The two sides of beam specimen 200 point
There is side interval not between the side wall of track groove 108, thus, avoid the side wall of guide-track groove from causing to limit to beam specimen 200
System；The test end face of beam specimen 200 is placed in the inside of track groove 108, in the long axis direction of beam specimen 200, guarantees beam type
Test specimen 200 is entirely placed in guide-track groove.
In order to more preferably simulate environment of the beam specimen 200 in practice of construction, the bottom of track groove 108 has ponding layer,
In this way, the bottom of beam specimen 200 then touches water, and is connected to the bottom of guide-track groove, the material after the infiltration of simulated roadway roadbed
Expect contraction distortion.
Elastic strip 109 is provided in the interval of side, elastic strip 109 extends along the long axis direction of beam specimen 200, elasticity
The side of item 109 is fixed on the side wall of track groove 108.After beam specimen 200 is placed in track groove 108, elastic strip 109
The other side abuts the side of beam specimen 200, in this way, being limited by elasticity of the elastic strip 109 to the side of beam specimen 200
System, can simulate in the actual environment, Material shrinkage deformation of the road foundation in the case where side limits.Using elastic strip
109 structure avoids being rigidly connected, then can be more advantageous to the contraction distortion of beam specimen 200.
In testing procedure 3) in, fixing seat 101 is set in the test end face peripheral hardware of beam specimen 200, is arranged in fixing seat 101
There is adjustment structure, one end of adjustment structure is fixedly connected in fixing seat 101, and the other end of adjustment structure is provided with fixing head
105, amesdial 107 is fixed in fixing head 105, and 106 activity of gauge head bar passes through institute's fixing head 105；By adjusting knot
Structure, so that the gauge head bar 106 of amesdial 107 extends along the long axis direction of beam specimen 200.
When arranging amesdial 107, by adjustment structure, amesdial 107 can be preferably adjusted, so that amesdial
107 gauge head bar 106 extends along the long axis direction of beam specimen 200, easy to operate, in addition, gauge head bar 106 passes through fixing head
105, it can be to the mobile carry out guide-localization of gauge head bar 106 using fixing head 105.
Adjustment structure includes the first rod piece 103 and the second rod piece 104, is set between the first rod piece 103 and the second rod piece 104
It is equipped with locking head；One end of first rod piece 103 is fixedly connected with fixing seat 101, and the other end of the first rod piece 103 is connected to locking
On head, one end of the second rod piece 104 is connected with fixing head 105, and the other end of the second rod piece 104 is connected on locking head；First
The other end of the other end of rod piece 103 and the second rod piece 104 is in dislocation arrangement, in this way, carrying out the first rod piece 103 and the second bar
It when 104 relative position of part is adjusted, avoids interfering between the first rod piece 103 and the second rod piece 104, and is convenient for the first rod piece
103 and the second arrangement between rod piece 104.
In testing procedure 3) in, after amesdial 107 is connected in fixing head 105, swing the first rod piece 103 and the second bar
The relative position of part 104 passes through lock after the gauge head bar 106 of amesdial 107 extends along the long axis direction of beam specimen 200
Tight head fixes the relative position between the first rod piece 103 and the second rod piece 104.
The shape for testing end plate is consistent with the test shape of end face of beam specimen 200；Testing end plate has towards test
Test end plate is fitted on the test end face of beam specimen 200 by the binding face of end face using the binding face；In testing procedure
2) it in, applies glue respectively at the center and four angles of the binding face of test end plate, the binding face of end plate will be tested
It is fitted on test end face, is bonded in this way, entire binding face is avoided to be completely fixed with test end face, when the receipts of beam specimen 200
Compression deformation cause test end face it is irregular when, can effectively limit test end plate deformation cause to fall off show.
Test end plate, which has, compresses face away from test end face arrangement, and the center for compressing face, which has, compresses position, when
After test end plate is fitted on test end face, the gauge head of gauge head bar 106, which is pressed on, to be compressed on position.In this way, compressing position and patch
Conjunction face center alignment, avoids the gauge head of gauge head bar 106 from occurring the phenomenon that deviateing or being detached from during compressing.
Compress and be arranged fluted on position, groove is hemispherical, gauge head have compress in a groove compress end, compress end
It is flat, compress end insertion in a groove.In this way, after beam specimen 200 shrinks deformation, due to test end face
Deformation compresses after minor fluctuations dislocation occurs in end, since groove is hemispherical, it is flat to compress end, in this way, compressing end can be with
Automatic adjustment is still placed in groove so that compressing end, will not detach from groove, and gauge head bar 106 is kept to protect
Hold the long axis direction extension along beam specimen 200.
In fixing head 105 have through-hole, in testing procedure 3) in, through-hole along the beam specimen 200 long axis direction
Extend, gauge head bar 106 has to wear wears section 111 in through-holes, and wearing for gauge head bar 106 is arranged with loose collar in section 111
110, loose collar 110 abuts the inner surface of the outer surface and through-hole that wear section 111 respectively.In this way, when beam specimen 200 occurs
When contraction distortion, gauge head bar 106 is mobile, using loose collar 110 can guide-localization be played in movement in through-holes to gauge head bar 106
Function, avoid gauge head bar 106 deviate phenomena such as, and loose collar 110 can be rolled on gauge head bar 106, will not be to gauge head bar 106
Movement cause to interfere.
The outer surface for wearing section 111 is provided with annular groove 112, and annular groove 112 is looped around the periphery arrangement for wearing section 111,
And the length of annular groove 112 is greater than the width of loose collar 110；Loose collar 110 abuts the bottom of annular groove 112.In this way, guaranteeing
Loose collar 110 can roll in annular groove 112, play the function of guide-localization, and loose collar 110 is avoided to roll to wearing section
Outside 111.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Made any modifications, equivalent replacements, and improvements etc., should all be included in the protection scope of the present invention within mind and principle.
Claims (10)
1. the Material shrinkage deformation test method of beam specimen, which is characterized in that including following testing procedure:
1) cement, is added using the inorganic binder based on building castoff, prepares beam specimen in a rectangular parallelepiped shape；
2), the beam specimen is horizontal is placed on horizontally disposed testing stand, and the long axis of the beam specimen is in level
Arrangement；The both ends of the long axis direction of the beam specimen are respectively provided with test end face, and the test end face is in a vertical shape；Described
It is fixed respectively on two test end faces of beam specimen to test end plate, test end plate arrangement in a vertical shape, the test lead
Plate is with the beam specimen synchronous；
3), the fixed and arranged amesdial outside the test end face of the beam specimen, the amesdial have gauge head bar, the gauge head
The end of bar has gauge head；The gauge head of the amesdial is pressed on the test end plate, the gauge head bar is along the beam
The long axis direction of formula test specimen extends, and the reading of the amesdial is adjusted to big numerical digit and is set, and records the initial of the amesdial
Reading；
4), within the time of test, the same day reading of the amesdial is read daily, according to same day reading and initial read
Number, obtains the contraction distortion amount of the beam specimen.
2. the Material shrinkage deformation test method of beam specimen as described in claim 1, which is characterized in that on the testing stand
It is provided with horizontally disposed track groove, the width of the track groove is greater than the width of the beam specimen, the track groove
Length is greater than the length of the track groove；In the testing procedure 2) in, the beam specimen is placed in the track groove, the beam
The two sides of formula test specimen have side interval between the side wall of track groove respectively, and the test end face of the beam specimen is placed in described
The inside of track groove.
3. the Material shrinkage deformation test method of beam specimen as claimed in claim 2, which is characterized in that the track groove
Bottom has ponding layer.
4. the Material shrinkage deformation test method of beam specimen as claimed in claim 2, which is characterized in that the side interval
In be provided with elastic strip, the elastic strip extends along the long axis direction of the beam specimen, and the side of the elastic strip is fixed
On the side wall of the track groove, after the beam specimen is placed in the track groove, the other side of the elastic strip is abutted
The side of the beam specimen.
5. such as the Material shrinkage deformation test method of the described in any item beam specimens of Claims 1-4, which is characterized in that In
The testing procedure 3) in, fixing seat is set in the test end face peripheral hardware of the beam specimen, adjusting is provided in the fixing seat
Structure, one end of the adjustment structure are fixedly connected on the fixing seat, and the other end of the adjustment structure is provided with fixation
Head, the amesdial are fixed in the fixing head, and the gauge head bar activity passes through the fixing head；By adjusting the tune
Section structure, so that the gauge head bar of the amesdial extends along the long axis direction of the beam specimen.
6. the Material shrinkage deformation test method of beam specimen as claimed in claim 5, which is characterized in that the adjustment structure
Including the first rod piece and the second rod piece, locking head is provided between first rod piece and the second rod piece；First rod piece
One end be fixedly connected with the fixing seat, the other end of first rod piece is connected on the locking head, second bar
One end of part is connected with the fixing head, and the other end of second rod piece is connected on the locking head；First rod piece
The other end and second rod piece the other end in dislocation arrangement；In the testing procedure 3) in, when the amesdial connects
After in fixing head, the relative position of first rod piece and the second rod piece is swung, when the gauge head bar of the amesdial is along institute
After the long axis direction extension for stating beam specimen, by opposite between fixed first rod piece of the locking head and the second rod piece
Position.
7. such as the Material shrinkage deformation test method of the described in any item beam specimens of Claims 1-4, which is characterized in that institute
The shape for stating test end plate is consistent with the test shape of end face of the beam specimen；The test end plate has towards test lead
The binding face in face；In the testing procedure 2) in, it is punished in the center of the binding face of the test end plate and four angles
It does not apply glue, the binding face of the test end plate is fitted on test end face；The test end plate, which has, deviates from test lead
Face arrangement compresses face, and the center for compressing face, which has, compresses position, when the test end plate is fitted in the test
After on end face, the gauge head of the gauge head bar is pressed on described compress on position.
8. the Material shrinkage deformation test method of beam specimen as claimed in claim 7, which is characterized in that described to compress position
Upper setting is fluted, and the groove is hemispherical, and the gauge head has the end that compresses compressed in a groove, and the end that compresses is in flat
Whole shape, the end that compresses are embedded in the groove.
9. such as the Material shrinkage deformation test method of the described in any item beam specimens of Claims 1-4, which is characterized in that institute
Stating has through-hole in fixing head, in the testing procedure 3) in, the through-hole extends along the long axis direction of the beam specimen,
The gauge head bar has to wear wears section in the through hole, and wearing for the gauge head bar is arranged with loose collar in section, the work
Rotating ring abuts the inner surface of the outer surface for wearing section and the through-hole respectively.
10. the Material shrinkage deformation test method of beam specimen as claimed in claim 9, which is characterized in that described to wear section
Outer surface be provided with annular groove, the annular groove is looped around the periphery arrangement for wearing section, and the length of the annular groove
Greater than the width of the loose collar；The loose collar abuts the bottom of the annular groove.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910722725.4A CN110455169B (en) | 2019-08-06 | 2019-08-06 | Material shrinkage deformation testing method for beam type test piece |
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|---|---|---|---|
| CN201910722725.4A CN110455169B (en) | 2019-08-06 | 2019-08-06 | Material shrinkage deformation testing method for beam type test piece |
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| CN110455169B CN110455169B (en) | 2021-04-23 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113848120A (en) * | 2021-09-30 | 2021-12-28 | 浙江律通复合材料有限公司 | Composite material shrinkage rate test equipment |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101344371A (en) * | 2008-08-26 | 2009-01-14 | 河海大学 | Device and method for measuring early age period linear deformation of cement based material |
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| CN110455169B (en) | 2021-04-23 |
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