CN2566269Y - Sensitive concrete sensing element - Google Patents
Sensitive concrete sensing element Download PDFInfo
- Publication number
- CN2566269Y CN2566269Y CN 02275179 CN02275179U CN2566269Y CN 2566269 Y CN2566269 Y CN 2566269Y CN 02275179 CN02275179 CN 02275179 CN 02275179 U CN02275179 U CN 02275179U CN 2566269 Y CN2566269 Y CN 2566269Y
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- concrete
- test block
- utility
- electrode
- model
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- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The utility model provides a sensitive concrete sensing element. Short cut or continuous carbon fibers are evenly distributed in a test block taking concrete, alite or mortar as a base material, and the test block is provided with 1-2 pairs of electrodes. The utility model buried in a concrete, an alite or a mortar structure can conveniently monitor ambient concrete stress via the sensor. The utility model has the advantages of low cost, high sensitivity, simple installation, good compatibility with the concrete, good durability, etc.
Description
(1) technical field
The utility model relates to a kind of sensor, specifically a kind of sensor that is used to monitor civil structure.
(2) background technology
Foil gauge commonly used is monitored the situation of concrete, cement stone or mortar member compression chord, tension in civil structure.It is higher that this foil gauge exists cost, and the mounting process complexity is poor with concrete, cement stone, mortar compatibility, shortcomings such as poor durability.Can't reach long term monitoring to the civil structure life-cycle.
(3) summary of the invention
The purpose of this utility model is to provide a kind of and can imbeds easily in concrete, cement stone, the mortar, and cost is low, and is highly sensitive, and mounting process is simple, the clever concrete sensor component of, good endurance good with concrete, cement stone, mortar compatibility.The purpose of this utility model is achieved in that and is evenly distributed with short cutting or continuous carbon fiber that in concrete, cement stone or mortar are the test block of base-material test block is provided with 1-2 to electrode.The utility model can also comprise following architectural feature: 1, electrode has 1-2 right, and electrode is embedded in the test block.2, electrode has 1 pair, and electrode is embedded in the test block.3, electrode has 1 pair, and attachment of electrodes is in the both sides of test block.Cut or continuous carbon fiber is evenly distributed in cement stone, mortar or the concrete short, then pour into shape and be the test block about 50 * 50 * 50mm, simultaneously electrode equidistantly is inserted in the test block and is solidifying or test block is made device of the present utility model with attachment of electrodes in the both sides of test block after solidifying again.With device of the present utility model imbed in concrete, cement stone, the mortar member can be more easily stress by the concrete around this sensing element of monitoring, cement stone, mortar.Because the Main Ingredients and Appearance of device of the present utility model is that cement stone, mortar or concrete so its permanance are fine.And the coarse aggregate in its volume and the concrete is more approaching, with concrete, cement stone, mortar reasonable compatibility is arranged also.Can directly device of the present utility model be embedded in the concrete during use, mounting process is simple.Compare its manufacturing cost with foil gauge lower.What Fig. 6 provided is at the relation curve between its stress and the resistivity under the effect of compressive stress.Therefrom the relation between resistivity and the compressive stress can be divided into three phases as can be seen: 1, AB section, and this moment, pressure was less, and resistivity reduces with the increase of compressive stress; 2, BC section, resistivity do not have to change substantially; 3, CD section, resistivity increases rapidly.Above three phases corresponds respectively to elastic range, plastic range and the damage envelope of carbon fiber stress strain gauge.What Fig. 7 provided is at the relation curve between its stress and the resistivity under the effect of tension.Therefrom the relation between resistivity and the compressive stress also can be divided into three phases as can be seen: 1, A ' B ' section, and this moment, tension was less, and resistivity increases with the increase of tension; 2, B ' C ' section, resistivity does not have to change substantially; 3, C ' D ' section, resistivity increases rapidly.Above three phases corresponds respectively to elastic range, plastic range and the damage envelope of carbon fiber stress strain gauge.
(4) description of drawings
Fig. 1 is the structural representation of first kind of embodiment of the present utility model;
Fig. 2 is the A-A cut-open view of Fig. 1;
Fig. 3 is the structural representation of second kind of embodiment of the present utility model;
Fig. 4 is the B-B cut-open view of Fig. 3;
Fig. 5 is the structural representation of the third embodiment of the present utility model;
Fig. 6 is in the relation between its stress and the resistivity under the effect of compressive stress;
Fig. 7 is in the relation between its stress and the resistivity under the effect of tension.
(5) specific embodiments
For a more detailed description to the utility model for example below in conjunction with accompanying drawing:
In conjunction with Fig. 1 and Fig. 2.The composition of clever concrete sensor component comprises that being evenly distributed on cement stone, mortar or concrete is that weak point in the test block 1 that constitutes of base-material is cut or continuous carbon fiber 2, and test block is provided with 1 pair of electrode 3,4.Electrode is embedded in the test block.
In conjunction with Fig. 3 and Fig. 4.The composition of clever concrete sensor component comprises that being evenly distributed on cement stone, mortar or concrete is that weak point in the test block 1 that constitutes of base-material is cut or continuous carbon fiber 2, and test block is provided with 1 pair of electrode 3,4.Attachment of electrodes is in the both sides of test block.
In conjunction with Fig. 5.The composition of clever concrete sensor component comprises that being evenly distributed on cement stone, mortar or concrete is that weak point in the test block 1 that constitutes of base-material is cut or continuous carbon fiber 2, and test block is provided with 2 pairs of electrodes 3,4,5,6.Electrode equidistantly is embedded in the test block.
Claims (4)
1, a kind of clever concrete sensor component is characterized in that: be evenly distributed with short cutting or continuous carbon fiber in concrete, cement stone or mortar are the test block of base-material, test block is provided with 1-2 to electrode.
2, clever concrete sensor component according to claim 1 is characterized in that: electrode has 1 pair, and electrode is embedded in the test block.
3, clever concrete sensor component according to claim 1 is characterized in that: electrode has 2 pairs, and electrode is embedded in the test block.
4, clever concrete sensor component according to claim 1 is characterized in that: electrode has 1 pair, and attachment of electrodes is in the both sides of test block.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02275179 CN2566269Y (en) | 2002-09-06 | 2002-09-06 | Sensitive concrete sensing element |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02275179 CN2566269Y (en) | 2002-09-06 | 2002-09-06 | Sensitive concrete sensing element |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2566269Y true CN2566269Y (en) | 2003-08-13 |
Family
ID=33739289
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02275179 Expired - Fee Related CN2566269Y (en) | 2002-09-06 | 2002-09-06 | Sensitive concrete sensing element |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2566269Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103274646A (en) * | 2013-06-13 | 2013-09-04 | 大连海事大学 | Stress sensor made of graphene oxide cement-based composite material |
| CN104864995A (en) * | 2015-05-22 | 2015-08-26 | 西安近代化学研究所 | Carbon fiber concrete sensing element capable of perceiving impact load |
| CN108362738A (en) * | 2018-02-02 | 2018-08-03 | 山西省交通科学研究院 | Asphalt pavement structure damage alarm method based on the quick characteristic of power-motor |
| CN112697584A (en) * | 2020-12-07 | 2021-04-23 | 北京建筑大学 | Stress self-sensing cement-based material tension sensitivity performance testing method |
-
2002
- 2002-09-06 CN CN 02275179 patent/CN2566269Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103274646A (en) * | 2013-06-13 | 2013-09-04 | 大连海事大学 | Stress sensor made of graphene oxide cement-based composite material |
| CN104864995A (en) * | 2015-05-22 | 2015-08-26 | 西安近代化学研究所 | Carbon fiber concrete sensing element capable of perceiving impact load |
| CN108362738A (en) * | 2018-02-02 | 2018-08-03 | 山西省交通科学研究院 | Asphalt pavement structure damage alarm method based on the quick characteristic of power-motor |
| CN112697584A (en) * | 2020-12-07 | 2021-04-23 | 北京建筑大学 | Stress self-sensing cement-based material tension sensitivity performance testing method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |