CN202182880U - Concrete self-contraction determinator - Google Patents
Concrete self-contraction determinator Download PDFInfo
- Publication number
- CN202182880U CN202182880U CN 201120287654 CN201120287654U CN202182880U CN 202182880 U CN202182880 U CN 202182880U CN 201120287654 CN201120287654 CN 201120287654 CN 201120287654 U CN201120287654 U CN 201120287654U CN 202182880 U CN202182880 U CN 202182880U
- Authority
- CN
- China
- Prior art keywords
- concrete
- template
- side template
- mould
- base plate
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Images
Abstract
The utility model discloses a concrete self-contraction determinator. The determinator comprises a base plate, magnetic displacement sensors are arranged at the two ends of the base plate; a non-metal concrete template frame is arranged on the base plate between the two magnetic displacement sensors; the non-metal concrete template frame comprises a base template; two lateral templates are arranged at the two ends of the base template; two vertical plates are arranged between the two lateral templates; and displacement test holes are respectively formed on the two lateral templates. The utility model has the advantages that the concrete self-contraction determinator is interfered by less external factors, by utilizing a leveling instrument and an anti-slip strip at the bottom of a mould to eliminate the effect of the slippage of the concrete on a self-contraction transformation measurement result due to gravitation effect; constraint on the mould is small, the mould made of plexiglass has a smooth surface, the coefficient of the friction between the mould and a polrvinyl chloride film is small, and a concrete sample can freely contract in the mould; the mould is designed to be opened and closed leftwards and rightwards, and is fixed via a steel platform and bolts, the reduplicative utilization ratio is high, and the mounting/dismounting is easy, the concrete is easily separated from the mould, and the utilization ratio of the device is greatly improved.
Description
Technical field
The utility model belongs to concrete pick-up unit, is specifically related to a kind of pick-up unit that is used to not have the mensuration of early-age concrete self-constriction distortion under the restrained condition.
Background technology
Under constraint condition; Concrete shrinkage deformation causes its inner tension that produces; Concrete produces the crack when this tension surpasses the concrete ultimate tensile strength (UTS); Simultaneously because the effect that stress is concentrated, the crack that has taken place can cause the final structural failure of concrete durability decline causing much littler that situation extends below expansion than crack stress.Along with the concrete science and technology development; High-strength, high performance concrete is applied to engineering more and more, and low water binder ratio, high gel material content make its internal pore structure obtain refinement, and the effect of concrete self-desiccation strengthens; Cause concrete spontaneous contraction almost equal with dry contraction; Even greater than the drying contraction, self-constriction has occupied quite great proportion in concrete shrinkage deformation, and concrete self-constriction performance also causes the extensive attention of more and more Chinese scholars.The instrument that can accurately measure concrete self-constriction distortion is pair extremely important with the research of volume stability of concrete and Crack Control.The determinator that does not now still have simple concrete self-constriction.
Summary of the invention
The purpose of the utility model is to provide a kind of analyzer of simple concrete self-constriction, to address the above problem.
The technical scheme of the utility model is: concrete self-constriction analyzer; It comprises base plate, and the two ends, floor are provided with magnetic-type displacement transducer, and the base plate between the two magnetic-type displacement transducers is provided with nonmetallic concrete mould sheet frame; Said nonmetallic concrete mould sheet frame comprises end template; The end template two ends are provided with two side templates, are provided with two risers between two side templates, offer the displacement measurement hole on two side templates respectively.
Said end template comprises first end template and second end template; The two ends of first end template are provided with first side template and second side template; Be provided with first riser between first side template and second side template; The two ends of second end template are provided with the 3rd side template and the 4th side template; Be provided with second riser between the 3rd side template and the 4th side template; First side template and the 3rd side template are in same plane, and second side template and the 4th side template are in another plane; First end template, first side template and second side template, first riser constitute first nonmetallic concrete blinding half frame, and second end template, the 3rd side template and the 4th side template, second riser constitute second nonmetallic concrete blinding half frame; First nonmetallic concrete blinding half frame is connected with the base plate set bolt, second nonmetallic concrete blinding half frame be connected with the base plate set bolt.
End template is provided with balanced blend stop.
Be connected with horizontal adjustment bolt under the base plate.
Concrete self-constriction analyzer can begin to carry out overall process to the drawdown deformation value in any length of time from cast to concrete and accurately measure in real time.Concrete method of application is: in die trial, lay two layers of plastic thin films; Concrete mix is built in the die trial; Vibration moulding is floating, and installation testing is popped one's head in, and seals concrete sample with polyvinyl chloride plastic film; Tie water leveling ruler adjustment die bottom plate spiral shell button makes die location be in horizontality behind cast 4～6h.The digital displacement sensor being installed, being opened the deformation data acquisition software, is to measure concrete self-constriction deformation values under (20 ± 2) ℃ constant temperature in temperature.
Adopt magnetic-type displacement transducer, concrete is not had additonal pressure, the initial measurement time early can be installed the deformation test device behind the concrete initial set, the distortion that can the complete determination concrete produces because of self-constriction.
Measuring accuracy is high, uses the digital displacement sensor can gather concrete self-constriction deformation values continuously, accurately, and has avoided the mobile influence to test result of test specimen position among the manual testing.
Good seal performance utilizes plastic sheeting to seal concrete sample fully, can completely cut off the exchange of moisture of concrete and external environment.
Extraneous factor is disturbed little, utilizes surveyor's staff and mold bottom tread plate, prevents that because of action of gravity the concrete slippage is to self-constriction deformation measurement result's influence.
Mould constraint is little, and mould is processed by organic glass, smooth surface, and friction factor is little between polyvinyl chloride plastic film, and concrete sample is portion's free shrink within it.
Mould is designed to opening and closing left and right, utilizes steel platform and bolt, recycles the rate height, and mold attaching/detaching is simple, and concrete is prone to the demoulding, has improved the utilization factor of device greatly.
Description of drawings
Fig. 1 concrete self-constriction analyzer schematic top plan view.
Fig. 2 concrete self-constriction analyzer master looks synoptic diagram.
Synoptic diagram is looked on Fig. 3 concrete self-constriction analyzer left side.
Embodiment
As shown in Figure 2, base plate 4 adopts steel material, is connected with horizontal adjustment bolt 6 under it; The two ends of base plate 4 respectively are provided with sensor support base 5, are respectively equipped with magnetic-type displacement transducer 1 on the sensor support base 5.Base plate 4 between the two magnetic-type displacement transducers 1 is provided with nonmetallic concrete mould sheet frame 2.
Nonmetallic concrete mould sheet frame 2, promptly mould adopts organic glass to process smooth surface.Its structure is like Fig. 1,2, shown in 3, and it is made up of two and half frames in the present embodiment;
First nonmetallic concrete blinding half frame comprises between first side template 2.2 that first end template 2.1, first end template, 2.1 two ends are provided with respectively and second side template 2.3, first side template 2.2 and second side template 2.3 first riser 2.4 is set.
Second nonmetallic concrete blinding half frame comprises second riser 2.8 that is provided with between the 3rd side template 2.6 that second end template 2.5, second end template, 2.5 two ends are provided with respectively and the 4th side template 2.7, the 3rd side template 2.6 and the 4th side template 2.7.
Second side template 2.3 and the 4th side template 2.7 are in same plane.Offer semicircle orifice 7.1 and 7.2 at second side template 2.3 and the 4th side template 2.7 relative positions; After second side template 2.3 and 2.7 amalgamations of the 4th side template, two semicircle orifices 7.1 on it and 7.2 form the displacement measurement hole 7 of two magnetic-type displacement transducers 1.
First side template 2.2 and the 3rd side template 2.6 in same plane, two semicircle orifices on it and the displacement measurement hole that forms two magnetic-type displacement transducers 1.Not shown in the figures.
For another example Fig. 1, shown in 2, end template is provided with balanced blend stop, on first end template 2.1 and second end template 2.5, respectively is provided with balanced blend stop 3.
As shown in Figure 1 again, first nonmetallic concrete blinding half frame is connected with base plate set bolt 8, and second nonmetallic concrete blinding half frame is connected with base plate set bolt 9.
Claims (4)
1. concrete self-constriction analyzer; It comprises base plate, and the two ends, floor are provided with magnetic-type displacement transducer, it is characterized in that the base plate between the two magnetic-type displacement transducers is provided with nonmetallic concrete mould sheet frame; Said nonmetallic concrete mould sheet frame comprises end template; The end template two ends are provided with two side templates, are provided with two risers between two side templates, offer the displacement measurement hole on two side templates respectively.
2. concrete self-constriction analyzer according to claim 1 is characterized in that said end template comprises first end template and second end template; The two ends of first end template are provided with first side template and second side template; Be provided with first riser between first side template and second side template; The two ends of second end template are provided with the 3rd side template and the 4th side template; Be provided with second riser between the 3rd side template and the 4th side template; First side template and the 3rd side template are in same plane, and second side template and the 4th side template are in another plane; First end template, first side template and second side template, first riser constitute first nonmetallic concrete blinding half frame, and second end template, the 3rd side template and the 4th side template, second riser constitute second nonmetallic concrete blinding half frame; First nonmetallic concrete blinding half frame is connected with the base plate set bolt, and second nonmetallic concrete blinding half frame is connected with the base plate set bolt.
3. concrete self-constriction analyzer according to claim 1 or claim 2 is characterized in that end template is provided with balanced blend stop.
4. concrete self-constriction analyzer according to claim 1 is characterized in that being connected with horizontal adjustment bolt under the base plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120287654 CN202182880U (en) | 2011-08-09 | 2011-08-09 | Concrete self-contraction determinator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120287654 CN202182880U (en) | 2011-08-09 | 2011-08-09 | Concrete self-contraction determinator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202182880U true CN202182880U (en) | 2012-04-04 |
Family
ID=46175912
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201120287654 Expired - Lifetime CN202182880U (en) | 2011-08-09 | 2011-08-09 | Concrete self-contraction determinator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202182880U (en) |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103528494A (en) * | 2013-10-17 | 2014-01-22 | 集美大学 | Device for measuring creep deformation of eddy current |
| CN104297137B (en) * | 2014-10-09 | 2016-09-28 | 河海大学 | A kind of full-automatic water cement-based material convergent-divergent performance aircraft and control method thereof |
| CN106092714A (en) * | 2016-08-02 | 2016-11-09 | 中国科学院武汉岩土力学研究所 | A kind of rock-like materials cuboid sample sample preparation stage apparatus |
| CN106771097A (en) * | 2016-12-16 | 2017-05-31 | 中国建筑材料科学研究总院 | Concrete shrinkage and drying shrinkage pressure tester and test method |
| CN107014346A (en) * | 2017-05-31 | 2017-08-04 | 济南大学 | The device tested suitable for the deformation after to theing cement solidifies |
| CN107677798A (en) * | 2017-10-31 | 2018-02-09 | 江苏金贸科技发展有限公司 | A kind of architectural prefab concrete curing test mould |
| CN108181347A (en) * | 2018-02-02 | 2018-06-19 | 沈阳建筑大学 | A kind of chute type thermal expansion coefficient of concrete measuring device and measuring method |
| CN108226217A (en) * | 2018-01-12 | 2018-06-29 | 上海市城市建设设计研究总院（集团）有限公司 | The concrete humiture and deflection experimental rig and application method of addition swelling agent |
| CN109297869A (en) * | 2018-11-14 | 2019-02-01 | 西南交通大学 | For the experimental rig of degradation mechanism containing fissure rock and method under water-rock interaction |
| CN109856374A (en) * | 2018-12-26 | 2019-06-07 | 中国铁道科学研究院集团有限公司铁道建筑研究所 | A kind of concrete self-shrinkage test method |
| CN109946440A (en) * | 2019-03-25 | 2019-06-28 | 广东工业大学 | A kind of measuring device and method of self-compacting concrete self-constriction amount |
-
2011
- 2011-08-09 CN CN 201120287654 patent/CN202182880U/en not_active Expired - Lifetime
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103528494A (en) * | 2013-10-17 | 2014-01-22 | 集美大学 | Device for measuring creep deformation of eddy current |
| CN104297137B (en) * | 2014-10-09 | 2016-09-28 | 河海大学 | A kind of full-automatic water cement-based material convergent-divergent performance aircraft and control method thereof |
| CN106092714A (en) * | 2016-08-02 | 2016-11-09 | 中国科学院武汉岩土力学研究所 | A kind of rock-like materials cuboid sample sample preparation stage apparatus |
| CN106771097A (en) * | 2016-12-16 | 2017-05-31 | 中国建筑材料科学研究总院 | Concrete shrinkage and drying shrinkage pressure tester and test method |
| CN107014346B (en) * | 2017-05-31 | 2023-02-21 | 济南大学 | Device suitable for deformation after cement solidifies is tested |
| CN107014346A (en) * | 2017-05-31 | 2017-08-04 | 济南大学 | The device tested suitable for the deformation after to theing cement solidifies |
| CN107677798A (en) * | 2017-10-31 | 2018-02-09 | 江苏金贸科技发展有限公司 | A kind of architectural prefab concrete curing test mould |
| CN108226217A (en) * | 2018-01-12 | 2018-06-29 | 上海市城市建设设计研究总院（集团）有限公司 | The concrete humiture and deflection experimental rig and application method of addition swelling agent |
| CN108181347A (en) * | 2018-02-02 | 2018-06-19 | 沈阳建筑大学 | A kind of chute type thermal expansion coefficient of concrete measuring device and measuring method |
| CN109297869A (en) * | 2018-11-14 | 2019-02-01 | 西南交通大学 | For the experimental rig of degradation mechanism containing fissure rock and method under water-rock interaction |
| CN109856374A (en) * | 2018-12-26 | 2019-06-07 | 中国铁道科学研究院集团有限公司铁道建筑研究所 | A kind of concrete self-shrinkage test method |
| CN109856374B (en) * | 2018-12-26 | 2022-02-22 | 中国铁道科学研究院集团有限公司铁道建筑研究所 | Concrete self-shrinkage test method |
| CN109946440A (en) * | 2019-03-25 | 2019-06-28 | 广东工业大学 | A kind of measuring device and method of self-compacting concrete self-constriction amount |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202182880U (en) | Concrete self-contraction determinator | |
| CN103149094B (en) | The measuring method of tensile creep of early-age concrete | |
| CN202433284U (en) | Osmotic coefficient testing device for concrete | |
| CN101509865A (en) | Nonsaturated soil hydraulic parameter measuring device and measuring method | |
| CN101923024A (en) | Method for determining elastic modulus and flexural rigidity of reinforced concrete beam with crack | |
| CN202974813U (en) | Indoor testing device for seepage characteristics of jointed rock mass | |
| CN110542703B (en) | Device and method for monitoring thermal expansion stress and deformation of foam concrete in constraint state | |
| CN104880396A (en) | Soil body two-direction seepage model device under external load action and testing method | |
| CN204080618U (en) | A kind of dynamometry heightens curved surface steel support | |
| CN103983516A (en) | Device and method for measuring and calculating poisson ratio of soil body | |
| CN110595935A (en) | Method for determining water-gas motion parameters of road asphalt mixture | |
| CN206504989U (en) | A kind of experimental rig for measuring Coarse Saline deformation and infiltration | |
| CN204313848U (en) | A kind of plain type mold plate verticality somascope | |
| CN201628668U (en) | Testing device for measuring unsaturated soil water characteristic | |
| CN209798849U (en) | layered pile foundation testing device adopting double-pneumatic-membrane vertical loading | |
| CN102854302A (en) | Testing device and method for real-time measurement of cracking time and crack width of concrete at early age | |
| CN103033460B (en) | The determinator of soil body horizontal osmotic coefficient and method thereof | |
| CN106018760A (en) | Device and method for measuring internal humidity of concrete | |
| CN104807698B (en) | A kind of method of testing of continuous fiber reinforced composites Poisson's ratio | |
| CN109991121B (en) | Test method for testing gas permeability of concrete by using concrete pipe test piece | |
| CN208586595U (en) | A kind of soil lateral pressure monitoring device | |
| CN204165840U (en) | A kind of multi-functional unsaturated soil consolidometer | |
| CN110187084A (en) | Concrete early age shrinkage deformation characteristic measuring method | |
| CN104912123B (en) | Foundation pit heaving model experimental device and method | |
| CN204731237U (en) | A kind of road surface cement concrete temperature and humidity test mould |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120404 |