CN104764765B - Concrete contraction percentage tester - Google Patents
Concrete contraction percentage tester Download PDFInfo
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- CN104764765B CN104764765B CN201510127354.7A CN201510127354A CN104764765B CN 104764765 B CN104764765 B CN 104764765B CN 201510127354 A CN201510127354 A CN 201510127354A CN 104764765 B CN104764765 B CN 104764765B
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- concrete
- taper container
- contraction percentage
- graduated scale
- scale
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- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The present invention provides a kind of concrete contraction percentage tester, including a transparent taper container；Graduated scale is formed with the bus of the taper container；The mark length of each scale interval of the graduated scale is equal to the length that the scale interval is projected on the axis of the taper container.The tester is not only simple in structure, and is easy to operation.
Description
Technical field
It is to be related to a kind of concrete contraction percentage tester especially the present invention relates to concrete construction machines field.
Background technology
In engineering construction field, concrete is high due to cost performance, therefore is widely adopted；And concrete is in consolidation process
In, have one substantially the characteristics of be that its volume can produce contraction；Therefore, it is necessary to consider in more more specific engineerings
The shrinkage factor of concrete, to avoid induration from producing crack, such as cement road construction, bridge construction；Such as concrete contraction percentage
It is too high, then obviously cannot be used in compared with multiple-project；In this regard, it is necessary to be carried out to the shrinkage factor of concrete before construction
Detection, to ensure the concrete contraction percentage for using within prescribed limit.
At present in concrete contraction percentage test process, generally using box-like test device, there is hold-down gear etc. in it
Included compared with multimachine, structure is complex, and operated more inconvenient；Therefore, it is necessary to find a kind of simple structure, operation is more facilitated
Concrete contraction percentage test device, builds personnel and widely uses in order to common engineering construction.
The content of the invention
Regarding to the issue above, it is an object of the invention to provide a kind of concrete contraction percentage tester, the tester is not only
Simple structure, and it is easy to operation.
The technical solution adopted for the present invention to solve the technical problems is：The concrete contraction percentage tester includes one thoroughly
Bright taper container；Graduated scale is formed with the bus of the taper container；The mark of each scale interval of the graduated scale
Length is equal to the length that the scale interval is projected on the axis of the taper container.
Preferably, the Zero calibration of the graduated scale is the drift angle of the taper container, scale value extends along bus.
Preferably, the taper container drift angle is equal to 2arctan0.5；The circular cone is cut using any horizontal plane to hold
Cone obtained by device, its basal diameter is equal to height.
Preferably, the graduated scale is embedded in the chute extended along the bus of the taper container, can be along chute
Slide, and the zero point of the graduated scale is in the top.
Preferably, the concrete contraction percentage tester also includes a pedestal；The pedestal has one to downward
A piece screw rod of matching in the screw stretched, the screw, the screw rod is driven by cam mechanism, realizes moving back and forth up and down；It is described
The lower end of screw rod is connected to spiral cover in the ventilating cover lid on the taper container top.
The beneficial effects of the present invention are：The concrete contraction percentage tester when in use, only need to be by appropriate semisolid
Concrete is directly placed into the taper container, will be surface-treated thereon it is smooth, and read now concrete upper surface it is corresponding
Scale value；Then it is waited to consolidate, because concrete is each to uniform, shrinkage rates are consistent during consolidation, its circular cone top before and after consolidation
Angle is constant, so that in taper container, the space below concrete upper surface is filled all the time；Therefore, after consolidation is complete, then
Read the scale value corresponding to the concrete upper surface of consolidation；According to the change of front and rear scale value, you can easily obtain coagulation
The consolidation shrinkage factor of soil.
Brief description of the drawings
Fig. 1 is the schematic diagram of embodiment one of this concrete contraction percentage tester.
Fig. 2 is the schematic diagram of embodiment two of this concrete contraction percentage tester.
Fig. 3 is the schematic diagram of embodiment three of this concrete contraction percentage tester.
Specific embodiment
The present invention is further described with reference to the accompanying drawings and examples：
Implement one：
In the embodiment one shown in Fig. 1, the concrete contraction percentage tester includes a transparent taper container 1；Institute
Graduated scale 11 is formed with the bus for stating taper container 1.
The mark length of each scale interval of the graduated scale 11 is equal to axle of the scale interval in the taper container
The length projected on line.Such as：For a scale interval on the graduated scale 11, according to the mark of scale value, starting point scale
It is 20mm to be worth, and terminal scale value is 30mm, then the mark length of the scale interval is 30mm -20mm=10mm, and between the scale
The projected length being interposed between on the axis of taper container is just 10mm.It is, indicated by the graduated scale 11 being taper container 1
The height of the upper surface of interior concrete.
In embodiment one, the Zero calibration of the graduated scale 11 is the drift angle of the taper container 1, and scale value is along bus
Extend.
In addition, making the drift angle of the taper container 1 be equal to 2arctan0.5；The circular cone is cut using any horizontal plane to hold
Cone obtained by device 1, its basal diameter is equal to height.So, the inner concrete of taper container 1 maximum chi in the horizontal direction is made
It is very little equal with full-size on vertical direction, so that further ensure it during natural consolidation, each stress uniform
Cause.
Appropriate semisolid concrete when in use, need to be only directly placed into the circle by above-mentioned concrete contraction percentage tester
In cone container 1, will thereon be surface-treated smooth, and read the now corresponding scale value L0 in concrete upper surface；Then it is waited
Consolidation, because concrete is each to uniform, shrinkage rates are consistent during consolidation, and its circular cone drift angle is constant before and after consolidation, so that circular cone
In container, the space below concrete upper surface is filled all the time；Therefore, after consolidation is complete, then the concrete for reading consolidation
Scale value L1 corresponding to upper surface；According to the change of front and rear scale value, you can easily obtain the consolidation shrinkage factor of concrete.
Shrinkage factor derivation is as follows：The high shrinkage ratio of concrete circular cone is：L1/L0, because the concrete circular cone before and after contraction is several
What is similar, therefore is respectively L1/L0 to shrinkage ratio, and in three dimensions, volume contraction ratio is（L1/L0）3, cubical contraction is 1-
（L1/L0）3。
Embodiment two：
In the embodiment two shown in Fig. 2, the difference with embodiment one is：The graduated scale 11 is embedded at edge
In the chute that the bus of the taper container 1 extends, can be along slide, and the zero point of the graduated scale 11 is in and most goes up
Side.
By this embodiment, after injection concrete in taper container 1, the graduated scale 11 can be first slided, make its zero point
The upper surface of alignment concrete；After concrete is consolidated, then the scale value corresponding to the concrete upper surface checked after consolidation, i.e.,
The cubical contraction of concrete can be drawn；It can be seen that, by this embodiment after, without in test process, before being consolidated to concrete
Upper surface scale is noted down again,（Such as note down, more than 24 hours are generally needed due to consolidation time, it is likely that lose data）,
Therefore the convenience of test is further increased.
Embodiment three：
In the embodiment three shown in Fig. 3, the difference with embodiment one is：The concrete contraction percentage tester
Also include a pedestal 4；The pedestal 4 has a piece screw rod 3 of matching in a screw 30 for extending downwardly, the screw 30,
The screw rod 3 is driven by cam mechanism 41, realizes moving back and forth up and down；The lower end of the screw rod 3 is connected to spiral cover in the circle
The ventilating cover lid on cone container 1 top.By this embodiment three, because the screw thread between screw rod 3 and screw 30 is limited, screw rod 3 is upper
Under while move back and forth, rotated positive and negative repeatedly；Screw rod 3 moves up and down the longitudinal levelling for promoting semisolid concrete,
And the rotary motion of screw rod then promotes the horizontal levelling of semisolid concrete, in this way, the concrete in taper container 1 can be made
In consolidation process, property is consistent as much as possible everywhere, and concrete outside is sufficiently close fitted with the inwall of taper container 1.
In the present embodiment three, spring 42 is also additionally arranged between the cam structure 41 and screw rod 3, moreover it is possible to make mixed in taper container 1
Solidifying soil vibration is more soft, prevents rigid shock from causing concrete to be released with the inwall of taper container 1.
The foregoing is only presently preferred embodiments of the present invention, be not intended to limit the invention, it is all it is of the invention spirit and
Within principle, any modification, equivalent substitution and improvements made etc. should be included within the scope of the present invention.
Claims (5)
1. a kind of concrete contraction percentage tester, it is characterised in that：Including a transparent taper container（1）；The circular cone holds
Device（1）Bus on be formed with graduated scale（11）；The graduated scale（11）Each scale interval mark length equal to the quarter
Degree is spaced in the taper container（1）Axis on project length.
2. concrete contraction percentage tester according to claim 1, it is characterised in that：The graduated scale（11）Zero point
It is demarcated as the taper container（1）Drift angle, scale value along bus extend.
3. concrete contraction percentage tester according to claim 1, it is characterised in that：The taper container（1）Drift angle etc.
In 2arctan0.5；The cone for being cut obtained by the taper container using any horizontal plane, its basal diameter is equal to height.
4. concrete contraction percentage tester according to claim 1, it is characterised in that：The graduated scale（11）It is embedded at
Along the taper container（1）Bus extend chute in, can be along slide, and the graduated scale（11）Zero point be in
The top.
5. concrete contraction percentage tester according to claim 1, it is characterised in that：Also include a pedestal（4）；It is described
Pedestal（4）With a screw for extending downwardly（30）, the screw（30）A piece screw rod of interior matching（3）, the screw rod（3）Receive
Cam mechanism（41）Drive, realize moving back and forth up and down；The screw rod（3）Lower end be connected to spiral cover in the taper container
（1）The ventilating cover lid on top（2）.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510127354.7A CN104764765B (en) | 2015-03-23 | 2015-03-23 | Concrete contraction percentage tester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510127354.7A CN104764765B (en) | 2015-03-23 | 2015-03-23 | Concrete contraction percentage tester |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104764765A CN104764765A (en) | 2015-07-08 |
| CN104764765B true CN104764765B (en) | 2017-06-30 |
Family
ID=53646729
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510127354.7A Expired - Fee Related CN104764765B (en) | 2015-03-23 | 2015-03-23 | Concrete contraction percentage tester |
Country Status (1)
| Country | Link |
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| CN (1) | CN104764765B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109975531A (en) * | 2019-04-18 | 2019-07-05 | 清华大学 | Gelling solidifies the test device and test method of cubical contraction |
| CN110187084A (en) * | 2019-06-14 | 2019-08-30 | 舟山道隆科技有限公司 | Concrete early age shrinkage deformation characteristic measuring method |
Citations (5)
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|---|---|---|---|---|
| WO2001098763A2 (en) * | 2000-06-21 | 2001-12-27 | Texas A & M University System | Aggregate dilatometer device and methods of testing |
| CN2625893Y (en) * | 2003-05-27 | 2004-07-14 | 南京工业大学 | Measuring device for early shrinkage ratio of cement concrete material |
| CN202041529U (en) * | 2011-04-06 | 2011-11-16 | 同济大学 | Detection device for early autogenous shrinkage of cement mortar |
| CN202083688U (en) * | 2011-05-18 | 2011-12-21 | 长沙理工大学 | Cement concrete slump measuring device |
| CN102608150A (en) * | 2012-02-23 | 2012-07-25 | 江苏博特新材料有限公司 | Device and method for testing expansive properties of concrete |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20010103232A (en) * | 2000-05-08 | 2001-11-23 | 윤덕용 | Measurement Apparatus for Thermal Stresses of Concrete Structures and Method Thereof |
-
2015
- 2015-03-23 CN CN201510127354.7A patent/CN104764765B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2001098763A2 (en) * | 2000-06-21 | 2001-12-27 | Texas A & M University System | Aggregate dilatometer device and methods of testing |
| CN2625893Y (en) * | 2003-05-27 | 2004-07-14 | 南京工业大学 | Measuring device for early shrinkage ratio of cement concrete material |
| CN202041529U (en) * | 2011-04-06 | 2011-11-16 | 同济大学 | Detection device for early autogenous shrinkage of cement mortar |
| CN202083688U (en) * | 2011-05-18 | 2011-12-21 | 长沙理工大学 | Cement concrete slump measuring device |
| CN102608150A (en) * | 2012-02-23 | 2012-07-25 | 江苏博特新材料有限公司 | Device and method for testing expansive properties of concrete |
Non-Patent Citations (1)
| Title |
|---|
| 高性能混凝土的体积稳定性研究;张向军;《中国优秀博硕士学位论文全文数据库 (硕士) 工程科技Ⅱ辑 》;20040615(第2期);第C038-102页 * |
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| CN104764765A (en) | 2015-07-08 |
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| PB01 | Publication | ||
| EXSB | Decision made by sipo to initiate substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB03 | Change of inventor or designer information |
Inventor after: Ju Jie Inventor after: Yang Hao Inventor after: He Yuanwei Inventor after: Yang Fenggang Inventor after: Huang Minghao Inventor after: Feng Zuoyang Inventor after: Nan Yuntao Inventor after: Du Hai Inventor after: Xie Fei Inventor after: Zhao Yao Inventor after: Liu Zhiyong Inventor after: Zhao Erlong Inventor after: Wang Jianlei Inventor after: Hao Yuliang Inventor after: Fei Yang Inventor after: Liu Jianhui Inventor after: Wang Hui Inventor after: Wang Bin Inventor after: Yang Hui Inventor after: Ma Wenhua Inventor after: Liu Chuan Inventor after: Wei Qiaoyong Inventor after: Sun Xinge Inventor after: Wang Haichuan Inventor before: Ma Genchang |
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| CB03 | Change of inventor or designer information | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20170605 Address after: Xinmi Henan Zhengzhou City West Qin waterway 452370 No. 618 Zhengzhou city Career Academy Applicant after: Ju Jie Applicant after: Yang Hao Applicant after: He Yuanwei Applicant after: Yang Fenggang Applicant after: Huang Minghao Applicant after: Feng Zuoyang Applicant after: Nan Yuntao Applicant after: Du Hai Applicant after: Xie Fei Applicant after: Zhao Yao Applicant after: Liu Zhiyong Applicant after: Zhao Erlong Applicant after: Wang Jianlei Applicant after: Hao Yuliang Applicant after: Fei Yang Applicant after: Liu Jianhui Applicant after: Wang Hui Applicant after: Wang Bin Applicant after: Yang Hui Applicant after: Ma Wenhua Applicant after: Liu Chuan Applicant after: Wei Qiaoyong Applicant after: Sun Xinge Applicant after: Wang Haichuan Address before: 210000 Nanjing, Jiangsu Province, Yuhuatai District, software Avenue, No. 186 Applicant before: Ma Genchang |
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