CN201417271Y - Concrete expansion and contraction measuring device - Google Patents
Concrete expansion and contraction measuring device Download PDFInfo
- Publication number
- CN201417271Y CN201417271Y CN2009200860750U CN200920086075U CN201417271Y CN 201417271 Y CN201417271 Y CN 201417271Y CN 2009200860750 U CN2009200860750 U CN 2009200860750U CN 200920086075 U CN200920086075 U CN 200920086075U CN 201417271 Y CN201417271 Y CN 201417271Y
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- meter
- jig arm
- concrete
- sliding sleeve
- cross bar
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Abstract
The utility model relates to a concrete expansion and contraction measuring device which comprises a support, a first meter and a second meter, the measuring head of the first meter is in contact withthe left test contact on the concrete sample, the first meter is fixed at the left end of the support, the measuring head of the second meter is contact with the right test contact on the concrete sample, and the second meter is fixed at the right end of the support. The concrete expansion and contraction measuring device is characterized in that the support is arranged on a clamp, and the clampis clamped on the concrete sample when in use. The concrete expansion and contraction measuring device has the advantages of accurate measurement and simple installation.
Description
Technical field
The utility model relates to a kind of measurement mechanism that concrete expands and shrinks that is used to measure.
Background technology
Cement concrete is the most widely used building materialss of modern times, also is the most large current artificial material, is the inherent characteristic of cement concrete but shrink, and concrete causes that because of contraction the phenomenon of cracking is of common occurrence.Concrete volume stability and cracking problem are the important indicators that concrete durability is estimated, it is the important parameter of xoncrete structure quality, therefore, volume stability of concrete furtherd investigate be of great immediate significance, the expand accuracy of shrinking test of concrete will directly influence the quality safety evaluation of construction work.
At present, mensuration concrete expansion commonly used is a SP540 type concrete shrinkage measuring instrument with shrinkage, and this contraction measuring instrument is made of base, support, three major parts of measurement bay, the instrument heaviness, complicated operation, the test poor repeatability, and dial gauge makes test accuracy lower.Chinese patent (patent No.: ZL 200720032091.2) discloses a kind of concrete shrinkage measuring instrument, by base, location side plate, locating end plate, reference column, base plate rolling steel ball, dial gauge, protect table baffle plate, dial gauge fixedly jackscrew form, after though this measuring instrument is once regulated, but follow-on test, still, its base designs, make the instrument heaviness, operation inconvenience, and, make test accuracy not high owing to adopt dial gauge to measure.Chinese patent (the patent No.: ZL200720045734.7) disclose a kind of vertical concrete material shrinkage factor measuring appliance, form by vertical comparator support, measuring head, dial gauge, sample mould, this measuring appliance can be measured concrete early-age shrinkage rate, but, because concrete test block is heavier, when uprightly placing, the lower end of concrete test block only contacts with measuring head, stress surface is little, poor stability, the accuracy of influence test.
Summary of the invention
The purpose of this utility model provide a kind of measurement accurately, the easy-to-install concrete expands and shrinks measurement mechanism.
To achieve these goals, the technical solution of the utility model is: concrete expands and shrinks measurement mechanism, it comprises support, first meter, second meter, the measuring head of first meter contacts with left test contact on the concrete sample, first meter is fixed on the left end of support, the measuring head of second meter contacts with right test contact on the concrete sample, and second meter is fixed on the right-hand member of support; It is characterized in that: support is arranged on the anchor clamps, and anchor clamps are clipped on the concrete sample during use.
Compared with prior art, the utility model has been obtained following technique effect:
1, measurement is accurate, precision is high, and the precision of clock gauge can be to 0.001mm;
2, test apparatus is easy for installation, simple;
But the concrete expansion of 3 continuous monitorings is shunk.
Description of drawings
Fig. 1 is a structural representation of the present utility model;
Fig. 2 is the sectional view of the A-A of Fig. 1;
Among the figure: 1-concrete sample, 2-left side test contact, the right test contact of 3-, 4-first meter, 5-second meter, 6-left side hanging stick, the right hanging stick of 7-, 8-left side sliding lock, 9-cross bar, 10-ring, jig arm before the 11-, the 12-front pad, the right sliding lock of 13-, 14-elastic component, jig arm behind the 15-, pad behind the 16-.
Embodiment
The utility model will be further described below in conjunction with drawings and Examples.
Embodiment 1:
As shown in Figure 1 and Figure 2, concrete expands and shrinks measurement mechanism, be used to measure concrete sample 1, it comprises support, first meter 4, second meter 5, anchor clamps, the measuring head of first meter 4 contacts with left test contact 2 on the concrete sample 1, first meter 4 be fixed on support left end [left side of Fig. 1 for a left side, the right is right, before towards the onlooker being, in the paper for the back (be among Fig. 2 the left side for the back)], the measuring head of second meter 5 contacts with right test contact 3 on the concrete sample 1, and second meter 5 is fixed on the right-hand member of support; Support is arranged on the anchor clamps, and anchor clamps are clipped on the concrete sample 1 during use.
Described support is made up of left hanging stick 6, right hanging stick 7, left sliding lock 8, cross bar 9, right sliding lock 13, fixedlys connected with first meter 4 in the lower end of left hanging stick 6, and the upper end of left hanging stick 6 is linked to each other with the left part of cross bar 9 by left sliding lock 8; The ring of the preceding jig arm, back that cross bar 9 passes anchor clamps on the jig arm (jig arm promptly, back jig arm are hinged by cross bar 9, and preceding jig arm, back jig arm can be rotated around cross bar 9); Fixedly connected with second meter 5 in the lower end of right hanging stick 7, the upper end of right hanging stick 7 is linked to each other with the right part of cross bar 9 by right sliding lock 13.
Described left sliding lock 8 is made up of first sliding sleeve, first screw rod, second sliding sleeve, second screw rod, first sliding sleeve vertical mutually with second sliding sleeve and be fixed together (as welding), first sliding sleeve is provided with first screw hole, and cross bar 9 passes first sliding sleeve, and first screw rod screws in first screw hole; Second sliding sleeve is provided with second screw hole, and second sliding sleeve is passed in the upper end of left hanging stick 6, and second screw rod screws in second screw hole.First screw rod screws out, and the first sliding sleeve band left hanging stick 6 along cross bar 9 move left and right, and first screw rod screws in, first sliding sleeve location.Second screw rod screws out, and left hanging stick 6 can move up and down with respect to cross bar 9, and second screw rod screws in, second sliding sleeve location.
Right sliding lock 13 is identical with the structure of left sliding lock 8.
Described anchor clamps comprise preceding jig arm 11, front pad 12, elastic component 14, back jig arm 15, back pad 16, and the upper end of preceding jig arm 11, back jig arm 15 is respectively equipped with ring 10, and the upper end of preceding jig arm 11, back jig arm 15 is hinged by ring 10, cross bar 9; Be provided with elastic component 14 between preceding jig arm 11 and the back jig arm 15, elastic component 14 is spring (present embodiment adopts 2 springs, also can be 1), and an end of spring is fixedlyed connected with preceding jig arm 11, and the other end of spring is fixedlyed connected with back jig arm 15.The lower end of preceding jig arm 11 is contacted with concrete sample 1 by front pad 12, and the lower end of back jig arm 15 is contacted with concrete sample 1 by back pad 16.Front pad 12, back pad 16 can make anchor clamps being positioned on the concrete sample of firm stable more, also can alleviate simultaneously and the local pressure that disperses jig arm that concrete sample is produced.Spring also can adopt other device that folder power can be provided to replace.
Described first meter 4, second meter 5 are respectively clock gauge.Meter also can be other length testing equipment.
Embodiment 2: substantially the same manner as Example 1, difference is: anchor clamps are 2, can increase the stability of cross bar 9.
If use the electronics clock gauge, clock gauge can be connected with computer, continuous acquisition test figure, realization real-time continuous are monitored concrete expansion and are shunk.
The utility model generally comprises following use step in the test concrete expands the process of shrinking:
1, concrete sample cast molding, the demoulding after 1 day;
2, concrete sample to be measured is placed on the smooth testing table, measure its initial length L0 with ruler;
3, press Fig. 1, with concrete expand to shrink measurement mechanism be fixed in concrete sample directly over;
4, regulate the position of two hanging sticks, the measuring head of meter and the test contact of concrete sample are offseted, fixing left sliding lock, right sliding lock;
5, the reading of two meters of record is respectively L
A left side 0, L
Right 0
6, concrete sample expands together with concrete and shrinks the measurement mechanism maintenance after t days, writes down reading again, is respectively L
Left side t, L
Right t
The shrinkage factor ε of this concrete in the time of t days then
t=(L
A left side 0+ L
Right 0-L
Left side t-L
Right t)/L
0
Work as ε
t＞0 o'clock, the cubic deformation of expression concrete in the time of t days was for shrinking; Work as ε
t＜0 o'clock, the cubic deformation of expression concrete in the time of t days was for expanding.
Described protection domain of the present utility model is not limited to the above embodiments, and other technical scheme identical with the utility model essence all belongs to the scope of the utility model protection.
Claims (6)
1. concrete expands and shrinks measurement mechanism, it comprises support, first meter (4), second meter (5), the measuring head of first meter (4) contacts with left test contact (2) on the concrete sample (1), first meter (4) is fixed on the left end of support, the measuring head of second meter (5) contacts with right test contact (3) on the concrete sample (1), and second meter (5) is fixed on the right-hand member of support; It is characterized in that: support is arranged on the anchor clamps, and anchor clamps are clipped on the concrete sample (1) during use.
2. concrete according to claim 1 expands and shrinks measurement mechanism, it is characterized in that: described support is made up of left hanging stick (6), right hanging stick (7), left sliding lock (8), cross bar (9), right sliding lock (13), fixedly connected with first meter (4) in the lower end of left side hanging stick (6), the upper end of left hanging stick (6) is linked to each other by the left part of left sliding lock (8) with cross bar (9); Cross bar (9) passes the preceding jig arm of anchor clamps, the ring on the jig arm of back; Fixedly connected with second meter (5) in the lower end of right hanging stick (7), the upper end of right hanging stick (7) is linked to each other by the right part of right sliding lock (13) with cross bar (9).
3. concrete according to claim 2 expands and shrinks measurement mechanism, it is characterized in that: described left sliding lock (8) is made up of first sliding sleeve, first screw rod, second sliding sleeve, second screw rod, first sliding sleeve and second sliding sleeve are vertical mutually and be fixed together, first sliding sleeve is provided with first screw hole, cross bar (9) passes first sliding sleeve, and first screw rod screws in first screw hole; Second sliding sleeve is provided with second screw hole, and second sliding sleeve is passed in the upper end of left hanging stick (6), and second screw rod screws in second screw hole.
4. concrete according to claim 1 expands and shrinks measurement mechanism, it is characterized in that: described anchor clamps comprise preceding jig arm (11), front pad (12), elastic component (14), back jig arm (15), back pad (16), the upper end of preceding jig arm (11), back jig arm (15) is respectively equipped with ring (10), and the upper end of preceding jig arm (11), back jig arm (15) is hinged by ring (10), cross bar (9); Be provided with elastic component (14) between preceding jig arm (11) and the back jig arm (15); The lower end of preceding jig arm (11) is contacted with concrete sample (1) by front pad (12), and the lower end of back jig arm (15) is contacted with concrete sample (1) by back pad (16).
5. concrete according to claim 4 expands and shrinks measurement mechanism, and it is characterized in that: elastic component (14) is a spring, and an end of spring is fixedlyed connected with preceding jig arm (11), and the other end of spring is fixedlyed connected with back jig arm (15).
6. concrete according to claim 1 expands and shrinks measurement mechanism, and it is characterized in that: described first meter (4), second meter (5) are respectively clock gauge.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200860750U CN201417271Y (en) | 2009-05-31 | 2009-05-31 | Concrete expansion and contraction measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200860750U CN201417271Y (en) | 2009-05-31 | 2009-05-31 | Concrete expansion and contraction measuring device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201417271Y true CN201417271Y (en) | 2010-03-03 |
Family
ID=41793695
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009200860750U Expired - Lifetime CN201417271Y (en) | 2009-05-31 | 2009-05-31 | Concrete expansion and contraction measuring device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201417271Y (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102269556A (en) * | 2011-05-09 | 2011-12-07 | 西安建筑科技大学 | Double-precision-control contraction measuring instrument for regenerated concrete |
| CN103293179A (en) * | 2013-05-20 | 2013-09-11 | 江家嘉 | Device and method for testing early thermal expansion coefficient of concrete based on suspension method |
| CN104391106A (en) * | 2014-12-09 | 2015-03-04 | 中国建筑材料科学研究总院 | Instrument for measuring restrained expansion rate and initial setting time of expansive concrete |
| CN103162604B (en) * | 2013-02-04 | 2016-07-06 | 长沙理工大学 | Real-time testing device and method for volume deformation of cement-based composite material after hardening |
| CN106526147A (en) * | 2016-11-30 | 2017-03-22 | 东南大学 | Device and method for measuring expansion performance of mortar or concrete under vertical semi-submerged condition |
| CN107514960A (en) * | 2017-09-29 | 2017-12-26 | 甘肃建科技术试验检测有限责任公司 | A kind of concrete expansion, shrinkage test length measuring instrument and measuring method |
| CN108955453A (en) * | 2018-06-19 | 2018-12-07 | 天津城建大学 | A kind of instrument installing structure for concrete prism test |
| CN110375628A (en) * | 2019-06-10 | 2019-10-25 | 李健 | A kind of concrete work distortion measurement convergent-divergent instrument |
| CN110455169A (en) * | 2019-08-06 | 2019-11-15 | 深圳市市政工程总公司 | The Material shrinkage deformation test method of beam specimen |
| CN114646753A (en) * | 2021-12-24 | 2022-06-21 | 中铁二十四局集团有限公司 | Concrete expansion and shrinkage deformation testing system in curing period |
-
2009
- 2009-05-31 CN CN2009200860750U patent/CN201417271Y/en not_active Expired - Lifetime
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102269556B (en) * | 2011-05-09 | 2012-12-19 | 西安建筑科技大学 | Double-precision-control contraction measuring instrument for regenerated concrete |
| CN102269556A (en) * | 2011-05-09 | 2011-12-07 | 西安建筑科技大学 | Double-precision-control contraction measuring instrument for regenerated concrete |
| CN103162604B (en) * | 2013-02-04 | 2016-07-06 | 长沙理工大学 | Real-time testing device and method for volume deformation of cement-based composite material after hardening |
| CN103293179A (en) * | 2013-05-20 | 2013-09-11 | 江家嘉 | Device and method for testing early thermal expansion coefficient of concrete based on suspension method |
| CN103293179B (en) * | 2013-05-20 | 2015-08-12 | 福建同利建材科技有限公司 | The early stage thermal expansion coefficient testing device of concrete based on suspension method and method of testing |
| CN104391106A (en) * | 2014-12-09 | 2015-03-04 | 中国建筑材料科学研究总院 | Instrument for measuring restrained expansion rate and initial setting time of expansive concrete |
| CN104391106B (en) * | 2014-12-09 | 2016-01-20 | 中国建筑材料科学研究总院 | A kind of expansive concrete limited expansion rate and presetting period analyzer |
| CN106526147A (en) * | 2016-11-30 | 2017-03-22 | 东南大学 | Device and method for measuring expansion performance of mortar or concrete under vertical semi-submerged condition |
| CN106526147B (en) * | 2016-11-30 | 2019-06-25 | 东南大学 | A kind of device and method that the expansion character measuring mortar or concrete under the conditions of vertical half soaks measures |
| CN107514960A (en) * | 2017-09-29 | 2017-12-26 | 甘肃建科技术试验检测有限责任公司 | A kind of concrete expansion, shrinkage test length measuring instrument and measuring method |
| CN108955453A (en) * | 2018-06-19 | 2018-12-07 | 天津城建大学 | A kind of instrument installing structure for concrete prism test |
| CN110375628A (en) * | 2019-06-10 | 2019-10-25 | 李健 | A kind of concrete work distortion measurement convergent-divergent instrument |
| CN110455169A (en) * | 2019-08-06 | 2019-11-15 | 深圳市市政工程总公司 | The Material shrinkage deformation test method of beam specimen |
| CN114646753A (en) * | 2021-12-24 | 2022-06-21 | 中铁二十四局集团有限公司 | Concrete expansion and shrinkage deformation testing system in curing period |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Free format text: FORMER OWNER: CHINA CONSTRUCTION THIRD ENGINEERING BUREAU CO., LTD. Effective date: 20120706 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20120706 Address after: 430074 Hubei province Wuhan city East Lake high tech Zone Huaguang Road No. 18 hi tech building 13 floor Patentee after: China Construction Commercial Concrete Co., Ltd. Address before: 430074 Hubei province Wuhan city East Lake high tech Zone Huaguang Road No. 18 hi tech building 13 floor Co-patentee before: China Construction Third Engineering Bureau Co., Ltd. Patentee before: China Construction Commercial Concrete Co., Ltd. |
|
| CX01 | Expiry of patent term |
Granted publication date: 20100303 |
|
| CX01 | Expiry of patent term |