CN203688553U - Test measurer for dry shrinkage and thermal shrinkage of cement concrete - Google Patents
Test measurer for dry shrinkage and thermal shrinkage of cement concrete Download PDFInfo
- Publication number
- CN203688553U CN203688553U CN201320751588.5U CN201320751588U CN203688553U CN 203688553 U CN203688553 U CN 203688553U CN 201320751588 U CN201320751588 U CN 201320751588U CN 203688553 U CN203688553 U CN 203688553U
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- slide plate
- main shaft
- cement concrete
- main shafts
- sliding plate
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Abstract
The utility model discloses a test measurer for dry shrinkage and thermal shrinkage of cement concrete. The test measurer comprises main shafts, wherein the main shafts are arranged at the same height and are mutually parallel, and the main shafts are fixed through supports and are parallel with the horizontal panel; a sliding plate vertical to the main shafts is consolidated between the main shafts, a calibrated scale is arranged under the sliding plate, and the top surface of the sliding plate is provided with a displacement indicator which can slide on the top of the sliding plate along a direction vertical to the main shafts; two sides of the sliding plate are respectively provided with a secondary shaft, and each secondary shaft is movably sleeved onto each main shaft through circular rings consolidated on two ends of the secondary shaft. The test measurer can achieve the purpose that the deformation of dry shrinkage and thermal shrinkage of cement concrete is refined to limited test points, overcomes the defect that the original experimental method can only calculate the overall deformation, and solves the problem that the existing experimental apparatus can only calculate the overall deformation but cannot precisely measure the local deformation. The measurement result is more detailed and accurate than that of the original device.
Description
Technical field
The utility model belongs to cement concrete experimental technique field, relates to a kind of Novel cement concrete drying shrinkage, temperature contracting experimental measurement device.
Background technology
The concrete drying shrinkage of water-setting, temperature contracting are the important indicators of cement concrete engineering construction, and now widely used cement concrete drying shrinkage, temperature contracting experimental provision often adopt instrument method and strain gauge method.Wherein instrument method, at the fixing clock gauge in the two ends of test specimen, reads test specimen scalable data.And being deformation quantity by being fixed on the foil gauge on test specimen, foil gauge rule calculates stroke.Two kinds of methods are only measured the bulk deformation of test specimen.The nonaffine deformation of test specimen and cracking have a very large relation, original test unit cannot accurate description cracking and deformation between relation, original test unit 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 experimental measurement device, and on device, multiple displacement indicators will record the displacement situation of test specimen each point, thereby can analyze test specimen local deformation problem.
The utility model institute is by the following technical solutions:
A kind of cement concrete drying shrinkage, temperature contracting experimental measurement device, comprise the main shaft that is arranged on sustained height and is parallel to each other, and main shaft is fixed by support and be parallel with surface level; Between main shaft, be consolidated with the slide plate vertical with main shaft, slide plate below is provided with rule, and slide plate end face is provided with can be at slide plate top along the displacement indicator sliding perpendicular to major axes orientation; Slide plate both sides are respectively arranged with secondary axes, and each secondary axes are all by being cemented in movable being sleeved on main shaft of annulus at secondary axes two ends.
Further, described displacement indicator comprises slide block, and the end face of slide block is plane, and slide block bottom surface is dome-shaped, and slide block side is provided with the pointer vertical with slide block end face.
Further, described slide plate is rectangular slab, and the end face of slide plate is the semicircle cylindroid coordinating with slide block bottom surface.
The utility model can be realized the deformation of cement concrete drying shrinkage, temperature contracting is refine to limited testing site, avoid the deficiency that original experimental technique can only calculated population deformation, solve existing experimental provision and can only entirety calculate deformation, and cannot accurately measure the problem of local deformation, than original measurement device result more in detail, accurately.
Brief description of the drawings
Fig. 1 is one-piece construction schematic diagram of the present utility model;
Fig. 2 is the front elevation of displacement indicator;
Fig. 3 is displacement indicator side view;
Number in the figure representative: 1-slide plate, 2-main shaft, 3-secondary axes, 4-annulus, 5-displacement indicator, 51-slide block, 52-pointer, 6-rule, 7-support;
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 experimental measurement device, comprise the main shaft 2 that is arranged on sustained height and be parallel to each other, and main shaft 2 is fixing and parallel with surface level by support 7; Be consolidated with the slide plate vertical with main shaft 21 on 2, main shaft, slide plate 1 below is provided with rule 6, and slide plate 1 end face is provided with can be at slide plate 1 top along the displacement indicator 5 sliding perpendicular to main shaft 2 directions; Slide plate 1 both sides are respectively arranged with secondary axes 3, and each secondary axes 3 are all by being cemented in movable being sleeved on main shaft 2 of annulus 4 at secondary axes 3 two ends.
In the utility model, agent structure is main shaft 2, slide plate 1, rule 6 and secondary axes 3, and slide plate 1 is arranged on 2, main shaft, is rectangular slab, and slide plate 1 end face is processed as semicircle cylindroid.Be provided with displacement indicator 5 at slide plate 1 end face, as shown in Figures 2 and 3, the end face of displacement indicator 5 is plane, bottom surface is dome-shaped, the radius of this dome-shaped is identical with the radius of semicircle cylindroid, and displacement indicator 5 can be coordinated with slide plate 1 end face, slides at slide plate 1 end face.
Slide plate 1 below is provided with rule 6, and is provided with the pointer 52 vertical with slide block 51 end faces in slide block 51 sides, and pointer 52 points to the different scales on rule 6, can demarcate the position of this slide block 51.
In process of the test, displacement indicator 5 arranges multiple, and cement concrete test specimen is placed on the slide block 51 of displacement indicator 5, utilizes two secondary axes 3 to place stable test specimen.Test specimen is in process of the test, and nonaffine deformation and cracking, will cause the movement of test specimen bottom displacement indicator 5, by recording displacement indicator 5 displacements, can reflect the situation such as distortion and cracking of test specimen each several part in process of the test.
While utilizing this device to record cement concrete test specimen drying shrinkage, temperature contracting test, the course of work of the displacement situation of test specimen each point is as follows:
1. this device is placed in drying shrinkage, temperature contracting chamber;
2. at slide plate 1 end face, multiple displacement indicators 5 are set, according to testing requirements space certain distance, according to the pointer 52 of each displacement indicator 5 and rule 6, record the initial position of each displacement indicator 5;
3. test specimen is placed on the slide block 51 of displacement indicator 5, the bottom surface of test specimen is contacted with the end face of displacement indicator 5 slide blocks 51, the center line of test specimen be positioned at some displacement indicators 5 directly over, adjust the distance between two secondary axes 3 and slide plate 1, test specimen can be steadily placed on secondary axes 3 and slide block 51;
4. open chamber, carry out drying shrinkage, temperature contracting test, at regular intervals, record the position at each displacement indicator 5 places, by the contrast of multi-group data and displacement indicator 5 initial position data, can clearly reflect the situation of test specimen cracking, distortion.
Claims (3)
1. cement concrete drying shrinkage, a temperature contracting experimental measurement device, is characterized in that, comprise the main shaft (2) that is arranged on sustained height and be parallel to each other, main shaft (2) is fixing and parallel with surface level by support (7); Between main shaft (2), be consolidated with the slide plate (1) vertical with main shaft (2), slide plate (1) below is provided with rule (6), and slide plate (1) end face is provided with can be at slide plate (1) top along the displacement indicator (5) sliding perpendicular to main shaft (2) direction; Slide plate (1) both sides are respectively arranged with secondary axes (3), and each secondary axes (3) are all by being cemented in movable being sleeved on main shaft (2) of annulus (4) at secondary axes (3) two ends.
2. cement concrete drying shrinkage as claimed in claim 1, temperature contracting experimental measurement device, it is characterized in that, described displacement indicator (5) comprises slide block (51), the end face of slide block (51) is plane, slide block (51) bottom surface is dome-shaped, and slide block (51) side is provided with the pointer (52) vertical with slide block (51) end face.
3. cement concrete drying shrinkage as claimed in claim 1, temperature contracting experimental measurement device, is characterized in that, described slide plate (1) is rectangular slab, and the end face of slide plate (1) is the semicircle cylindroid coordinating with slide block (51) bottom surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320751588.5U CN203688553U (en) | 2013-11-22 | 2013-11-22 | Test measurer for dry shrinkage and thermal shrinkage of cement concrete |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320751588.5U CN203688553U (en) | 2013-11-22 | 2013-11-22 | Test measurer for dry shrinkage and thermal shrinkage of cement concrete |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203688553U true CN203688553U (en) | 2014-07-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320751588.5U Expired - Fee Related CN203688553U (en) | 2013-11-22 | 2013-11-22 | Test measurer for dry shrinkage and thermal shrinkage of cement concrete |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203688553U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104748653A (en) * | 2015-03-17 | 2015-07-01 | 中建海峡建设发展有限公司 | Detection device for cambered surface flatness |
-
2013
- 2013-11-22 CN CN201320751588.5U patent/CN203688553U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104748653A (en) * | 2015-03-17 | 2015-07-01 | 中建海峡建设发展有限公司 | Detection device for cambered surface flatness |
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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: 20140702 Termination date: 20141122 |
|
| EXPY | Termination of patent right or utility model |