CN205280718U - Device of precision measurement cement concrete dry shrinkage - Google Patents
Device of precision measurement cement concrete dry shrinkage Download PDFInfo
- Publication number
- CN205280718U CN205280718U CN201520789986.5U CN201520789986U CN205280718U CN 205280718 U CN205280718 U CN 205280718U CN 201520789986 U CN201520789986 U CN 201520789986U CN 205280718 U CN205280718 U CN 205280718U
- Authority
- CN
- China
- Prior art keywords
- dry shrinkage
- cement concrete
- concrete dry
- support
- water cement
- 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.)
- Active
Links
Landscapes
- Sampling And Sample Adjustment (AREA)
Abstract
The utility model discloses a device of precision measurement cement concrete dry shrinkage mainly includes electron screw micrometer and steel bottom plate, the last hand shape support that constitutes by altitude mixture control bucket composite structure that is equipped with of steel bottom plate, and the braced frame of electron screw micrometer passes through the hand shape support to be fixed on steel bottom plate, and the welding has the level(l)ing rod between the braced frame both ends, the circular horizontal spirit level of installation on the level(l)ing rod. The device passes through the length of electron screw micrometer dial plate direct readout concrete sample, through calculate must its shrink the size. The utility model discloses solved effectively that the concrete dry shrinkage measures that the discreteness is big, poor stability, problem that the accuracy is low, centering unsafe phenomenon takes place when having avoided screw micrometer to measure at every turn, has overcome the measuring error that artificial measurement caused, has improved measuring accuracy, precision and efficiency.
Description
Technical field
This utility model belongs to concrete drying shrinkage field of measuring technique, particularly relates to the device of a kind of measure water cement concrete dry shrinkage.
Background technology
Concrete dry shrinkage is the important indicator evaluating endurance performance of concrete. At present, the device measuring concrete drying shrinkage mainly has micrometer caliper and digital dial gauge. Wherein, micrometer caliper needs when measuring every time to be directed at pre-buried ailhead with gage button, and relies primarily on proficiency level and degree of registration when manual operation, causes that alignment error exceeds well over measurement error, and measurement result discreteness is big; And digital dial gauge is owing to being that Long Term Contact formula is measured, being affected especially vibration effect by indoor environment very big, final test result can not be satisfactory. Therefore, when measuring concrete drying shrinkage, all there is the problem that measurement error is big, measurement stability is low in existing two kinds of test devices.
Utility model content
The technical problems to be solved in the utility model is to provide that a kind of measurement error is little, accuracy is high, the device of the measure water cement concrete dry shrinkage of excellent in efficiency.
For solving above-mentioned technical problem, this utility model is by the following technical solutions: the device of measure water cement concrete dry shrinkage, mainly include electron helical micrometer and steel sole plate, steel sole plate is provided with hand support, the support framework of electron helical micrometer is fixed on steel sole plate by hand support, support and be welded with level(l)ing rod between framework two ends, level(l)ing rod is installed circular horizontal spirit level.
The support framework of electron helical micrometer is single ellipse arc steel pole, and the gage button tip of the micrometric screw of electron helical micrometer is cone.
Hand support one end and support framework adopt fixing nut to fix and interlock, and the other end is then welded on steel sole plate.
Hand support includes three hand cradle being distributed in steel sole plate triangular in shape, and each hand cradle is altitude mixture control bucket composite structure, and it is made up of cylinder jacket pipe and female thread bar, and cylinder jacket pipe and female thread bar location nut are attached.
Cylinder jacket pipe bottom is provided with rolling bearing, and corresponding location nut is provided with the groove of coupling.
Steel sole plate is processed by rectangle steel plate.
The device of above-mentioned measure water cement concrete dry shrinkage, also includes two sample support rods, and sample support rod is circular polishing low-carbon (LC) rod iron.
The device of above-mentioned measure water cement concrete dry shrinkage, also includes two location dishes, and location dish is rustless steel circular discs, and circular discs center is provided with a circular shrinkage hole.
For existing concrete dry shrinkage measurement apparatus Problems existing, inventor has designed and produced the device of a kind of measure water cement concrete dry shrinkage, mainly include electron helical micrometer and steel sole plate, steel sole plate is provided with hand support, the support framework of electron helical micrometer is fixed on steel sole plate by hand support, support and be welded with level(l)ing rod between framework two ends, level(l)ing rod is installed circular horizontal spirit level. This device directly reads the length of concrete sample by electron helical micrometer dial plate, is computed obtaining the size of its contraction. Wherein, circular horizontal spirit level ensure that the level of fialar micrometer when every time measuring, the point cantact of location dish and fialar micrometer screw rod ensure that each measurement and positioning is in same position, the level of the accurate and reference test bar of anchor point, efficiently reduce the discreteness of personal error and data, improve the accuracy of test; Polishing low-carbon (LC) rod iron, as sample support bar, can effectively reduce the impact that test is caused by the frictional resistance of system. Therefore, this utility model efficiently solves concrete drying shrinkage and measures the problem that discreteness is big, poor stability, degree of accuracy are low, avoid the inaccurate phenomenon of centering when fialar micrometer is measured every time to occur, overcome and artificially measure the measurement error caused, improve the accuracy of measurement, precision and efficiency.
Accompanying drawing explanation
Fig. 1 is the structural representation of the device of this utility model measure water cement concrete dry shrinkage.
Fig. 2 is the entirety assembling schematic diagram of the device of this utility model measure water cement concrete dry shrinkage.
In figure: 1 electron helical micrometer, 2 sample support rods, 3 level(l)ing rods, 4 steel sole plates, 5 hand supports, 6 rolling bearings, 7 altitude mixture control buckets, 8 circular horizontal spirit levels, 9 location nuts.
Detailed description of the invention
As illustrated in fig. 1 and 2, the device of measure water cement concrete dry shrinkage of the present utility model, mainly include electron helical micrometer and steel sole plate, also include two sample support rods, two location dishes. Wherein,
The support framework of electron helical micrometer is single ellipse arc steel pole, and the gage button tip of the micrometric screw of electron helical micrometer is cone.
Steel sole plate is processed by rectangle steel plate. Steel sole plate is provided with hand support and with fixed frame and regulates framework level, and the support framework of electron helical micrometer is fixed on steel sole plate by hand support, supports and is welded with level(l)ing rod between framework two ends, and level(l)ing rod is installed circular horizontal spirit level.
Hand support one end and support framework adopt fixing nut to fix and interlock ensure hand support and support being relatively fixed of framework, and the other end is then welded on steel sole plate. Hand support includes three hand cradle being distributed in steel sole plate triangular in shape, each hand cradle is altitude mixture control bucket composite structure, it is made up of cylinder jacket pipe (length 110mm, diameter 20mm), female thread bar and location nut, cylinder jacket pipe and female thread bar location nut are attached, and regulate the adjustable height of framework by installing location nut on female thread bar. Cylinder jacket pipe bottom is provided with rolling bearing to ensure the relative sliding of trocar sheath and location nut, and corresponding location nut is provided with the groove of coupling. Trocar sheath is embedded into during assembling ensure therebetween in the nut groove of location relatively stable, and the effect of leveling framework, in order to up-down adjustment, is played by this mechanism.
Sample support rod is in order to support sample in distance backplate surface certain altitude position, sample and steel plate bottom surface are not directly contacted with, sample support rod is (diameter 10mm) circular polishing low-carbon (LC) rod iron, effectively reduces, by polishing, the impact that concrete shrinkage is tested by the relative friction coefficient of rod iron and sample bottom surface.
Location dish is used for being pasted onto sample two and measures end axial location, and location dish is rustless steel circular discs, and circular discs center is provided with a circular shrinkage hole, it is ensured that during measurement, it contacts with the point of safes of electron helical micrometer gage button.
Using method
First support framework is fixed with fixing nut on hand support during test, then pass through the level of spiral micrometric screw when location nut makes spirit level horizontal center on level(l)ing rod indicate measurement that regulates; Measure end axial location at sample two and paste location dish; Sample is placed on the sample support bar of steel sole plate, and by the location dish concave hole heart and screw micrometer screw tip point cantact, electron helical micrometer dial plate can read the length of test sample, its contraction size can be obtained by calculating.
Claims (8)
1. the device of a measure water cement concrete dry shrinkage, it is characterized in that mainly including electron helical micrometer and steel sole plate, steel sole plate is provided with hand support, the support framework of electron helical micrometer is fixed on steel sole plate by hand support, support and be welded with level(l)ing rod between framework two ends, level(l)ing rod is installed circular horizontal spirit level.
2. the device of measure water cement concrete dry shrinkage according to claim 1, it is characterised in that: the support framework of described electron helical micrometer is single ellipse arc steel pole, and the gage button tip of the micrometric screw of electron helical micrometer is cone.
3. the device of measure water cement concrete dry shrinkage according to claim 1, it is characterised in that: described hand support one end and support framework adopt fixing nut to fix and interlock, and the other end is then welded on steel sole plate.
4. the device of measure water cement concrete dry shrinkage according to claim 2, it is characterized in that: described hand support includes three hand cradle being distributed in steel sole plate triangular in shape, each hand cradle is altitude mixture control bucket composite structure, it is made up of cylinder jacket pipe and female thread bar, and cylinder jacket pipe and female thread bar location nut are attached.
5. the device of measure water cement concrete dry shrinkage according to claim 4, it is characterised in that: described cylinder jacket pipe bottom is provided with rolling bearing, and corresponding location nut is provided with the groove of coupling.
6. the device of measure water cement concrete dry shrinkage according to claim 1, it is characterised in that: described steel sole plate is processed by rectangle steel plate.
7. the device of measure water cement concrete dry shrinkage according to claim 1, it is characterised in that also include two sample support rods, sample support rod is circular polishing low-carbon (LC) rod iron.
8. the device of measure water cement concrete dry shrinkage according to claim 1, it is characterised in that also including two location dishes, location dish is rustless steel circular discs, and circular discs center is provided with a circular shrinkage hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520789986.5U CN205280718U (en) | 2015-10-12 | 2015-10-12 | Device of precision measurement cement concrete dry shrinkage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520789986.5U CN205280718U (en) | 2015-10-12 | 2015-10-12 | Device of precision measurement cement concrete dry shrinkage |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205280718U true CN205280718U (en) | 2016-06-01 |
Family
ID=56065284
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520789986.5U Active CN205280718U (en) | 2015-10-12 | 2015-10-12 | Device of precision measurement cement concrete dry shrinkage |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205280718U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108490160A (en) * | 2018-03-08 | 2018-09-04 | 同济大学 | A kind of detection method of cement mortar early-age shrinkage |
-
2015
- 2015-10-12 CN CN201520789986.5U patent/CN205280718U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108490160A (en) * | 2018-03-08 | 2018-09-04 | 同济大学 | A kind of detection method of cement mortar early-age shrinkage |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204086263U (en) | A kind of can the concrete limited expansion rate analyzer of continuous-reading | |
| CN209371946U (en) | A kind of template measure and control device | |
| CN203455227U (en) | Point load test instrument | |
| CN205280718U (en) | Device of precision measurement cement concrete dry shrinkage | |
| CN204086264U (en) | A kind of full-automatic concrete limited expansion rate analyzer | |
| CN213688142U (en) | Positioning device for measuring steel bracket of evacuation platform | |
| CN105277097A (en) | Wall thickness unevenness detecting device of bellows | |
| CN211576868U (en) | Portable sleeve grouting material fluidity test device | |
| CN103234424A (en) | Measurer for outer diameters of valve seats | |
| CN204854603U (en) | Axiality inspection measuring tool | |
| CN206740105U (en) | A kind of double spherical end surface taper roller length detection instruments | |
| CN210775027U (en) | Large-bending-moment annular concrete pole tower mechanical experiment table | |
| CN205049127U (en) | Concrete thickness measurement device | |
| CN204269035U (en) | Prefabricated section gap detection clearance gauge | |
| CN211121216U (en) | Welding ball center positioning measuring instrument | |
| CN103983803A (en) | Five-hole-bulb probe support | |
| CN207280345U (en) | A kind of power takeoff cone bearing gap adjusts test measuring device | |
| CN209745190U (en) | Wire and cable detection measuring tool | |
| CN103398704A (en) | Method for measuring foundation frame at continuous-casting sector-shaped section | |
| CN201772828U (en) | Large curved plate measuring jig frame | |
| CN202719938U (en) | Measuring tool for measuring load loading center distance of test specimen in fatigue performance tests | |
| CN201778344U (en) | Single-pile bearing capacity detection datum line device | |
| CN210374931U (en) | Expansion degree testing device | |
| CN205228314U (en) | A percentage table for improving measurement accuracy | |
| CN214277340U (en) | Deflection measuring instrument support |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |