CN202002594U - Concrete specimen length change tester - Google Patents
Concrete specimen length change tester Download PDFInfo
- Publication number
- CN202002594U CN202002594U CN2011200447888U CN201120044788U CN202002594U CN 202002594 U CN202002594 U CN 202002594U CN 2011200447888 U CN2011200447888 U CN 2011200447888U CN 201120044788 U CN201120044788 U CN 201120044788U CN 202002594 U CN202002594 U CN 202002594U
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- metal bar
- axis
- tester
- fixed head
- fixing head
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Abstract
A concrete specimen length change tester comprises a base provided with an inclined face, an upper fixing head is mounted at the upper end of the inclined face, a lower fixing head is mounted at the lower end of the inclined face, a length measuring meter is fixedly mounted on the upper fixing head, and a metal bar is arranged on the lower fixing head. An axis of the length measuring meter is parallel to the inclined face of the base. An end face of the metal bar is perpendicular to an axis of the lower fixing head, the axis of the metal bar coincides with the axis of the length measuring meter, the metal bar is made of a carbon bar, and the length measuring meter is a dial indicator or dial gauge. The concrete specimen length change tester guarantees uniformity of contact forces, affection of human factors is reduced, accuracy of test results is improved, test of length change of a prism specimen can be achieved through simple structure, and the concrete specimen length change tester is convenient in operation, low in cost, low in affection of human factors and correct in test results.
Description
Technical field
The utility model relates to a kind of construction material measurement mechanism, particularly a kind of concrete sample length variations tester.
Background technology
At present, the basic active of aggregate is measured the quick mortar bars methods that adopt more, and mortar bars is of a size of 25mm * 25mm * 285mm, and testing tool is a dial gauge.Glue sand method is measured the expansivity of swelling agent, comprises confined expansion agent and free swelling rate, and the size of glue sand test specimen mostly is 40mm * 40mm * 160mm, and survey instrument is clock gauge or universal comparator.The size of concrete shrinkage and the wet test specimen that rises mostly is 100mm * 100mm * 480mm, and survey instrument is clock gauge or universal comparator.When usually using dial gauge and clock gauge to measure adopt auxiliary the carrying out of simple structure frame, the test specimen position is inconsistent when existing each measurement more, and survey instrument and the inconsistent situation of test specimen contact force influence precision of test result.Universal comparator measuring accuracy height, but exist complicated operation, the shortcoming that the carriage holding capacity is limited.
Summary of the invention
The utility model provides a kind of concrete sample length variations tester, overcome the deficiency that exists in dial gauge in the prior art, clock gauge and the universal comparator test cement matrix length, be applicable to the length variations of test water cement-based material: measure the basic active of aggregate, expansivity, concrete shrinkage and the wet test of rising that glue sand method is measured swelling agent as quick mortar bars method.Structure is simple and direct, and is stable, convenient test, test result accuracy height, particularly suitable prism test specimen.
The purpose of this utility model is achieved in that a kind of concrete sample length variations tester, comprise pedestal, pedestal is provided with a dip plane, the upper end of dip plane is equipped with fixed head, the lower end of dip plane is equipped with lower fixed head, survey long table and be fixedly mounted on the fixed head, lower fixed head is provided with metal bar.
The axis of surveying long table is parallel with the dip plane of pedestal.
The end face of metal bar and the axis normal of lower fixed head.
The axis of metal bar and the dead in line of surveying long table.
Metal bar adopts rod iron.
Survey long table and adopt dial gauge or clock gauge.
A kind of concrete sample length variations of the utility model tester is because during each the measurement, the bottom surface of test specimen all is close on the dip plane of pedestal, by deadweight the center, upper surface of metal bar on its lower end and the lower fixed head is contacted, guaranteed the consistance of contact force, reduce artificial factor, improved precision of test result; Realized test to prism test specimen length variations by simple and direct structure, easy to operate, cost is low, and the human factor influence is little, and test result is accurate.
Description of drawings
The utility model is described in further detail below in conjunction with drawings and Examples:
Fig. 1 is the utility model apparatus structure synoptic diagram.
Embodiment
A kind of concrete sample length variations tester comprises pedestal 1, and pedestal 1 is provided with a dip plane, the upper end of dip plane is equipped with fixed head 3, the lower end of dip plane is equipped with lower fixed head 4, surveys long table 2 and is fixedly mounted on the fixed head 3, and lower fixed head 4 is provided with metal bar 5.The axis of surveying long table 2 is parallel with the dip plane of pedestal 1, the axis normal of the end face of metal bar 5 and lower fixed head 4, and the axis of metal bar 5 and the dead in line of surveying long table 2, metal bar 5 adopts rod iron, surveys long table 2 and adopts dial gauge or clock gauge.
The axis of metal bar 5 is identical apart from half of the distance of the dip plane of pedestal 1 and test specimen 5 thickness, and the rod iron upper surface is consistent with the length of test specimen 6 with distance between the gauge head of surveying long table 2.
As shown in Figure 1: pedestal 1 is a triangle frame, and its dip plane is a straight steel plate, and surface of steel plate is level and smooth.Because during each the measurement, the bottom surface of test specimen 6 all is close on the dip plane of pedestal 1, by deadweight the center, upper surface of rod iron on its lower end and the lower fixed head 4 is contacted, guaranteed the consistance of contact force.
During use, wiping test specimen 6 surfaces, especially bottom surface guarantee no particle adhesion.The dip plane of wiping pedestal 1.The bottom surface of test specimen 6 is close on the dip plane of pedestal 1, the center, upper surface of rod iron contacts on the metal embedded part that makes test specimen 6 lower ends and the lower fixed head 4, the metal embedded part of test specimen 6 upper ends is contacted with the gauge head of surveying long table 2, and adjust test specimen 6, make the axis of its axis and rod iron and the dead in line of surveying long table 2 as far as possible.Read the reading of surveying long table 2, the difference between calculating and the datum readings.
Claims (6)
1. concrete sample length variations tester, comprise pedestal (1), it is characterized in that: pedestal (1) is provided with a dip plane, the upper end of dip plane is equipped with fixed head (3), the lower end of dip plane is equipped with lower fixed head (4), survey long table (2) and be fixedly mounted on the fixed head (3), lower fixed head (4) is provided with metal bar (5).
2. according to the described a kind of concrete sample length variations tester of claim 1, it is characterized in that: the axis of surveying long table (2) is parallel with the dip plane of pedestal (1).
3. according to the described a kind of concrete sample length variations tester of claim 1, it is characterized in that: the axis normal of the end face of metal bar (5) and lower fixed head (4).
4. according to the described a kind of concrete sample length variations tester of claim 1, it is characterized in that: the axis of metal bar (5) and the dead in line of surveying long table (2).
5. according to claim 1 or 3 or 4 described a kind of concrete sample length variations testers, it is characterized in that: metal bar (5) adopts rod iron.
6. according to claim 1 or 2 described a kind of concrete sample length variations testers, it is characterized in that: survey long table (2) and adopt dial gauge or clock gauge.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200447888U CN202002594U (en) | 2011-02-23 | 2011-02-23 | Concrete specimen length change tester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200447888U CN202002594U (en) | 2011-02-23 | 2011-02-23 | Concrete specimen length change tester |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202002594U true CN202002594U (en) | 2011-10-05 |
Family
ID=44705331
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200447888U Expired - Fee Related CN202002594U (en) | 2011-02-23 | 2011-02-23 | Concrete specimen length change tester |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202002594U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104111015A (en) * | 2014-07-29 | 2014-10-22 | 山东建筑大学 | Gear reference circle rapidly-measuring device |
| CN109253680A (en) * | 2018-10-30 | 2019-01-22 | 广西玉柴机器股份有限公司 | A kind of bolt length variable quantity measuring device and its application method |
-
2011
- 2011-02-23 CN CN2011200447888U patent/CN202002594U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104111015A (en) * | 2014-07-29 | 2014-10-22 | 山东建筑大学 | Gear reference circle rapidly-measuring device |
| CN109253680A (en) * | 2018-10-30 | 2019-01-22 | 广西玉柴机器股份有限公司 | A kind of bolt length variable quantity measuring device and its application method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111005 Termination date: 20140223 |