CN203572475U - Cement concrete air shrinkage and temperature shrinkage strain data acquisition device - Google Patents
Cement concrete air shrinkage and temperature shrinkage strain data acquisition device Download PDFInfo
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- CN203572475U CN203572475U CN201320754741.XU CN201320754741U CN203572475U CN 203572475 U CN203572475 U CN 203572475U CN 201320754741 U CN201320754741 U CN 201320754741U CN 203572475 U CN203572475 U CN 203572475U
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- cement concrete
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Abstract
The utility model discloses a cement concrete air shrinkage and temperature shrinkage strain data acquisition device. The device comprises a scanner, an original table of the scanner is equipped with a glass plate in parallel with the original table through a bracket, the glass plate is engraved with a square grid, a spring is vertically installed at each intersection of the square grid, one end of each spring is consolidated onto the glass plate, a sucker is consolidated onto the other end of each spring, and the bottom of each sucker is provided with an indicating piece. By the adoption of the device, deformation and cracking data of air shrinkage and temperature shrinkage of cement concrete can be scanned and acquired so that the quantity of deformation between two points on the plane can be precisely obtained, the obtained data is more precise and more detailed than data obtained by using an original device, and the problem that the deformation quantity can only be integrally calculated and the local deformation quantity cannot be accurately measured by the use of the existing experimental method is solved.
Description
Technical field
The utility model belongs to cement concrete experimental technique field, relates to a kind of use for laboratory cement concrete drying shrinkage, warm shrinkage strain data collector.
Background technology
The concrete drying shrinkage of water-setting, temperature contracting are the important indicators of cement concrete engineering construction, now widely used cement concrete drying shrinkage, normal instrument method and the strain gauge method of adopting of temperature contracting test.Wherein instrument method at the two ends of test specimen fixing clock gauge, read test specimen scalable data.And foil gauge rule is to calculate stroke by being fixed on the deformation quantity of the foil gauge on test specimen.In existing device, data collector can only gather the bulk deformation data on test specimen length direction, cannot gather the data that Width deformation data and local nonaffine deformation fracture exert an influence.Meanwhile, because the nonaffine deformation of test specimen and cracking have very large relation, therefore original test data acquisition device cannot accurate description cracking and deformation between relation, original device also exists the problems such as loss foil gauge, conventional efficient are low.
Summary of the invention
The purpose of this utility model is to provide a kind of cement concrete drying shrinkage, temperature contracting test unit, drying shrinkage, the temperature that can carry out in laboratory cement concrete test specimen contract while testing, the strain and the cracking situation that in the mode of flat scanning, record each observation station of test specimen different time points, make measurement result more accurate.
In order to realize above-mentioned task, the utility model by the following technical solutions:
A kind of cement concrete drying shrinkage, warm shrinkage strain data collector, comprise scanner, on the document board of scanner, by support, the glass plate parallel with document board is installed, on glass plate, be carved with square grid, on each point of crossing of square grid, spring is vertically installed, one end of spring is cemented on glass plate, and the other end of spring is consolidated with sucker, and the bottom of sucker is provided with indicating piece.
Further, described support is symmetricly set on the original copy edge of table of scanner.
Further, on described square grid, the specification of each grid is 2cm*2cm.
The utility model can be realized the distortion of cement concrete drying shrinkage, temperature contracting and cracking situation data are carried out to scanning collection, thereby can accurately obtain the deformation quantity between 2 in plane, the data that obtain than original device are more accurately with careful, solved in existing experimental technique and can only wholely calculate deformation, and cannot accurately measure the problem of local deformation.
Accompanying drawing explanation
Fig. 1 is one-piece construction schematic diagram of the present utility model;
Fig. 2 is the structural representation that spring is connected with sucker bottom;
Fig. 3 is the schematic diagram of indication;
Number in the figure representative: 1-support, 2-spring, 3-glass plate, 4-test specimen, 5-scanner, 6-sucker, 7-indicating piece;
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is elaborated.
Defer to technique scheme, as shown in Figure 1, a kind of cement concrete drying shrinkage, temperature contracting test data acquisition device, comprise scanner 5, on the document board of scanner 5, by support 1, the glass plate parallel with document board 3 is installed, on glass plate 3, be carved with square grid, on each point of crossing of square grid, spring 2 is vertically installed, one end of spring 2 is cemented on glass plate 3, and the other end of spring 2 is consolidated with sucker 6, and the bottom of sucker 6 is provided with indicating piece 7.
Support 1 is symmetricly set on the original copy edge of table of scanner 5, and the setting of support 1 is not exerted an influence to the result of scanning; In the square grid at the quarter on glass plate 3, the preferred size of each grid is 2cm*2cm, the strain grid that the coordinate that this specification forms monitors within the scope of 2cm can reach the requirement of reacting test specimen 4 strain datas, the excessive recorded information of grid is inaccurate, the too small impact that may form 6, adjacent sucker of grid, impact scanning.Glass plate 3 is divided into coordinate structure, is convenient to the location of each square grid point of crossing, the correspondence of these spot scan data.
Described indicating piece 7, preferably adopts circular piece, is provided with cruciform mark in circular piece, and the color of mark adopts the colors such as bright-coloured redness, green, yellow so that scanner 5 can be more accurately, scanning clearly.Indicating piece 7 is arranged on the centre position of sucker 6 bottoms, and the diameter of indicating piece 7 is less than the diameter of spring 2 center pits, and the center of indicating piece 7 is passed through in the axle center of spring 2, and scanner 5 can scan the indicating piece 7 of sucker 6 bottoms by the center pit of spring 2 like this.
The document board of scanner 5 is the workplace of scanner 5, and scanner 5 is by document board acquisition of image data information.During use, after cement concrete test specimen 4 one side is polished smooth, be adsorbed on the sucker 6 on spring 2 tops and fix, because the contracting of test specimen 4 becomes, the strain displacement that the indicating piece 7 of sucker 6 bottoms produces on in-planes.Scanner 5 not only can accurate recording test specimen 4 each points strain displacement situation, also can record distribution situation and the physical dimension in crack on test specimen 4 simultaneously.Scanner 5 will present each point displacement on test specimen 4 with planimetric coordinates form, can observe the impact of different directions deformation fracture.
This practicality gathers the drying shrinkage of cement concrete test specimen 4, the process of warm shrinkage strain data is as follows:
1, the cement concrete test specimen of maintenance moulding 4 one sides are polished smooth, be installed on sucker 6 fixing;
2, this device is positioned over together with test specimen 4 in drying shrinkage or temperature contracting experimental box, wherein opens scanner 5;
3, open chamber, according to requirement of experiment, at different time points, test specimen 4 bottoms are scanned, then scanner 5 passes to computing machine by usb protocol by the data of collection.
Claims (3)
1. a cement concrete drying shrinkage, warm shrinkage strain data collector, it is characterized in that, comprise scanner (5), on the document board of scanner (5), by support (1), the glass plate parallel with document board (3) is installed, glass plate is carved with square grid on (3), spring (2) is vertically installed on each point of crossing of square grid, one end of spring (2) is cemented on glass plate (3), the other end of spring (2) is consolidated with sucker (6), and the bottom of sucker (6) is provided with indicating piece (7).
2. cement concrete drying shrinkage as claimed in claim 1, warm shrinkage strain data collector, is characterized in that, described support (1) is symmetricly set on the original copy edge of table of scanner (5).
3. cement concrete drying shrinkage as claimed in claim 1, warm shrinkage strain data collector, is characterized in that, on described square grid, the specification of each grid is 2cm*2cm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320754741.XU CN203572475U (en) | 2013-11-22 | 2013-11-22 | Cement concrete air shrinkage and temperature shrinkage strain data acquisition device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320754741.XU CN203572475U (en) | 2013-11-22 | 2013-11-22 | Cement concrete air shrinkage and temperature shrinkage strain data acquisition device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203572475U true CN203572475U (en) | 2014-04-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320754741.XU Expired - Fee Related CN203572475U (en) | 2013-11-22 | 2013-11-22 | Cement concrete air shrinkage and temperature shrinkage strain data acquisition device |
Country Status (1)
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| CN (1) | CN203572475U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106226505A (en) * | 2016-07-14 | 2016-12-14 | 徐晟伟 | A kind of laying out apparatus detecting inside concrete humidity |
| CN108548512A (en) * | 2018-06-19 | 2018-09-18 | 山东省水利科学研究院 | A kind of underwater geomembrane monitoring method of regular hexagon monitor disk using fixed anchor |
| CN108801349A (en) * | 2018-06-19 | 2018-11-13 | 山东省水利科学研究院 | A kind of underwater geomembrane monitoring method using rectangular monitor disk |
| CN112326419A (en) * | 2020-11-06 | 2021-02-05 | 重庆大学 | Concrete elastic modulus measuring method based on capillary stress |
| CN113433301A (en) * | 2021-06-03 | 2021-09-24 | 中南大学 | Concrete shrinkage deformation testing device and method |
-
2013
- 2013-11-22 CN CN201320754741.XU patent/CN203572475U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106226505A (en) * | 2016-07-14 | 2016-12-14 | 徐晟伟 | A kind of laying out apparatus detecting inside concrete humidity |
| CN108548512A (en) * | 2018-06-19 | 2018-09-18 | 山东省水利科学研究院 | A kind of underwater geomembrane monitoring method of regular hexagon monitor disk using fixed anchor |
| CN108801349A (en) * | 2018-06-19 | 2018-11-13 | 山东省水利科学研究院 | A kind of underwater geomembrane monitoring method using rectangular monitor disk |
| CN108548512B (en) * | 2018-06-19 | 2023-04-25 | 山东省水利科学研究院 | Underwater geomembrane monitoring method adopting regular hexagon monitoring disc with fixed anchors |
| CN108801349B (en) * | 2018-06-19 | 2023-04-25 | 山东省水利科学研究院 | Underwater geomembrane monitoring method adopting square monitoring disc |
| CN112326419A (en) * | 2020-11-06 | 2021-02-05 | 重庆大学 | Concrete elastic modulus measuring method based on capillary stress |
| CN112326419B (en) * | 2020-11-06 | 2021-09-28 | 重庆大学 | Concrete elastic modulus measuring method based on capillary stress |
| CN113433301A (en) * | 2021-06-03 | 2021-09-24 | 中南大学 | Concrete shrinkage deformation testing device and method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140430 Termination date: 20141122 |
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| EXPY | Termination of patent right or utility model |