CN1484027A - Clever concrete sensor component - Google Patents
Clever concrete sensor component Download PDFInfo
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- CN1484027A CN1484027A CNA021329672A CN02132967A CN1484027A CN 1484027 A CN1484027 A CN 1484027A CN A021329672 A CNA021329672 A CN A021329672A CN 02132967 A CN02132967 A CN 02132967A CN 1484027 A CN1484027 A CN 1484027A
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- cement
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- concrete
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Abstract
The invention provides sensitive concrete-sensing component, including a test block which is set with 1-2 pairs of electrodes and whose material consists of carbon fiber 0.01%-15%, and basic material 75%-99.99%, easy buried in the concrete, low-cost, high-sensitivity, and simply installed.
Description
(1) technical field
What the present invention relates to is 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 compression chord of concrete component, the situation of tension in civil structure.Shortcomings such as foil gauge exists that cost is higher, mounting process is complicated,, poor durability poor with the concrete compatibility.Can't reach long term monitoring to the civil structure life-cycle.
(3) summary of the invention
The object of the present invention is to provide a kind ofly can imbed in the concrete easily, cost is low, highly sensitive, mounting process simple, the clever concrete sensor component of, good endurance good with the concrete compatibility.The object of the present invention is achieved like this: it comprises test block, and test block is provided with 1-2 to electrode, and the basic composition of test block material (quality) is a carbon fiber 0.01%～15%, base-material 75～99.99%.The present invention can also comprise following architectural feature: 1, described electrode has 1-2 right, and electrode is embedded in the test block; 2, described electrode has 1 pair, and attachment of electrodes is in the both sides of test block; 3, described base-material is a cement stone, and its composition (quality) is a cement 55～67%, water 23～45%; 4, described base-material is a mortar, and its composition (quality) is cement 10～67%, water 12～55%, sand 1～70%; 5, described base-material is a concrete, and its composition (quality) is cement 8～67%, water 5～20%, sand 1～40%, stone 1～55%; 6, described carbon fiber is a chopped carbon fiber.7, adding is suitable for cement or concrete additive or admixture in the base-material, and its addition accounts for 0.1%～2% of cement consumption; 8, add an amount of super fine powder additives in base-material, its addition accounts for 0.1%～10% of cement consumption.After base-material prepared in proportion, carbon fiber is admixed in the base-material equably, then pours into shape and be the test block about 50 * 50 * 50mm, electrode is inserted in to solidify again in the test block simultaneously and makes sensor; Or again attachment of electrodes is made sensor in the both sides of test block after the test block curing.Device of the present invention is imbedded in the concrete, can be more easily by the concrete stress around the monitoring sensor.Because the Main Ingredients and Appearance of apparatus of the present invention is potpourris of cement, sand, stone, so its permanance is fine.And the coarse aggregate in its volume and the concrete is more approaching, with concrete reasonable compatibility is arranged also.Can directly device of the present invention be embedded in the concrete during use, mounting process is simple.Compare its manufacturing cost with foil gauge lower.What Fig. 7 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. 8 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 invention;
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 invention;
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 invention;
Fig. 6 is the C-C cut-open view of Fig. 5;
Fig. 7 is in the relation between its stress and the resistivity under the effect of compressive stress;
Fig. 8 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 present invention for example below in conjunction with accompanying drawing:
1, in conjunction with Fig. 1,2, get the ratio of carbon fiber 0.01-15%, base-material 75～99.99% ready raw material, base-material is a cement stone, its composition (quality) is a cement 55～67%, water 23～45%.Earlier cement, water are mixed in proportion, make cement stone, chopped carbon fiber is evenly distributed in the cement stone, then pour into shape and be the test block 1 about 50 * 50 * 50mm, electrode 2,3 is inserted in to solidify again in the test block simultaneously and makes sensor.
2, get the ratio of carbon fiber 1%, base-material 99% ready raw material, base-material is a cement stone, and its composition (quality) is a cement 60%, water 40%.Earlier cement, water are mixed in proportion, make cement stone, chopped carbon fiber is evenly distributed in the cement stone, then pour into shape and be the test block 1 about 50 * 50 * 50mm, electrode 2,3 is inserted in to solidify again in the test block simultaneously and makes sensor.
3, get the ratio of carbon fiber 10%, base-material 90% ready raw material, base-material is a cement stone, and its composition (quality) is a cement 65%, water 35%.Earlier cement, water are mixed in proportion, make cement stone, chopped carbon fiber is evenly distributed in the cement stone, then pour into shape and be the test block 1 about 50 * 50 * 50mm, electrode 2,3 is inserted in to solidify again in the test block simultaneously and makes sensor.
4, get the ratio of carbon fiber 0.01-15%, base-material 75～99.99% ready raw material, base-material is a mortar, and its composition (quality) is cement 10～67%, water 12～55%, sand 1～70%.Earlier cement, sand, water are mixed in proportion, make mortar, chopped carbon fiber is evenly distributed in the mortar, then pour into shape and be the test block 1 about 50 * 50 * 50mm, electrode 2,3 is inserted in to solidify again in the test block simultaneously and makes sensor.
5, get the ratio of carbon fiber 2%, base-material 98% ready raw material, base-material is a mortar, and its composition (quality) is cement 50%, water 35%, sand 15%.Earlier cement, sand, water are mixed in proportion, make mortar, chopped carbon fiber is evenly distributed in the mortar, then pour into shape and be the test block 1 about 50 * 50 * 50mm, electrode 2,3 is inserted in to solidify again in the test block simultaneously and makes sensor.
6, get the ratio of carbon fiber 0.5%, base-material 99.5% ready raw material, base-material is a mortar, and its composition (quality) is cement 50%, water 40%, sand 10%.Earlier cement, sand, water are mixed in proportion, make mortar, chopped carbon fiber is evenly distributed in the mortar, then pour into shape and be the test block 1 about 50 * 50 * 50mm, electrode 2,3 is inserted in to solidify again in the test block simultaneously and makes sensor.
7, get the ratio of carbon fiber 0.01-15%, base-material 75～99.99% ready raw material, base-material is a concrete, and its composition (quality) is cement 8～67%, water 5～20%, sand 1～40%, stone 1～55%.Earlier cement, sand, stone, water are mixed in proportion, make concrete, chopped carbon fiber is evenly distributed in the concrete, then pours into shape and be the test block 1 about 50 * 50 * 50mm, electrode 2,3 is inserted in to solidify again in the test block simultaneously and makes sensor.
8, get the ratio of carbon fiber 12%, base-material 88% ready raw material, base-material is a concrete, and its composition (quality) is cement 13%, water 8.5%, sand 26.4%, stone 51.8%.Earlier cement, sand, stone, water are mixed in proportion, make concrete, chopped carbon fiber is evenly distributed in the concrete, then pours into shape and be the test block 1 about 50 * 50 * 50mm, electrode 2,3 is inserted in to solidify again in the test block simultaneously and makes sensor.
9, in conjunction with Fig. 5,6, on the basis of above-mentioned 8 embodiment, electrode comprises two pairs, and promptly electrode is made up of electrode 3,4,5,6.
10, in conjunction with Fig. 3,4, on the basis of embodiment 1-8, after the test block moulding by casting, solidify earlier, after the curing with the both sides of attachment of electrodes in test block.
11, on the basis of above-mentioned 10 embodiment, in the test block base-material, add and be suitable for cement or concrete additive or admixture, its addition accounts for 0.1～2%% of base-material total amount, and its additive or dopant can be water reducer (lignosulfonate and derivants thereof, higher polyol, hydroxycarboxylic acid and salt thereof, naphthalenesulfonate formaldehyde condensation compound, polyoxyethylene ether and derivant thereof, the polyvalent alcohol complex, the polycyclic aromatic hydrocarbon sulfonate formaldehyde condensation products, the melamine sulfonate and formaldehyde condensed polymer, polyacrylate and multipolymer thereof), air entraining agent (calcium lignosulfonate, modified lignin mahogany sulfonate and derivant thereof, the modified naphthalene sulfonate formaldehyde condensation products, carboxylate and polycarboxylate), defoamer (tributyl phosphate, dibutylphosphoric acid ester), early strength agent (chloride, bromide, fluoride, carbonate, nitrate, thiosulfate, aluminate, alkaline hydrated oxide, triethanolamine, calcium formate, calcium acetate, calcium propionate, fixed sour calcium, urea, oxalic acid, amine and formaldehyde condensation products), grouting additive (gel starch, methylcellulose, bentonitic clay) in any one or several.
12, on the basis of the various embodiments described above, in base-material, add an amount of nanometer and micron-sized super fine powder additives.Its addition accounts for 0.1～10% of cement total amount, and ultra-fine admixture can be any in silicon dioxide, titania, di-iron trioxide, silicon ash, ground slag, fine-ground fly-ash, the levigate siliceous shale.
13, on the basis of embodiment 11,12, in base-material, add an amount of conduction super fine powder additives.Its addition accounts for 0.1～10% of cement total amount, and the conduction super fine powder additives can be any in silicon dioxide, titania, di-iron trioxide, copper powder, nano-metal-oxide, graphite, the carbonyl iron particles.
Claims (9)
1, a kind of clever concrete sensor component, it is characterized in that: it comprises test block, and test block is provided with 1-2 to electrode, and the basic composition of test block material (quality) is a carbon fiber 0.01%～15%, base-material 75～99.99%.
2, clever concrete sensor component according to claim 1 is characterized in that: described electrode has 1-2 right, and electrode is embedded in the test block.
3, clever concrete sensor component according to claim 1 is characterized in that: described electrode has 1 pair, and attachment of electrodes is in the both sides of test block.
4, according to claim 1,2 or 3 described clever concrete sensor components, it is characterized in that: described base-material is a cement stone, and its composition (quality) is a cement 55～67%, water 23～45%.
5, according to claim 1,2 or 3 described clever concrete sensor components, it is characterized in that: described base-material is a mortar, and its composition (quality) is cement 10～67%, water 12～55%, sand 1～70%.
6, according to claim 1,2 or 3 described clever concrete sensor components, it is characterized in that: described base-material is a concrete, and its composition (quality) is cement 8～67%, water 5～20%, sand 1～40%, stone 1～55%.
7, according to claim 1,2 or 3 described clever concrete sensor components, it is characterized in that: described carbon fiber is a chopped carbon fiber.
8, clever concrete sensor component according to claim 4 is characterized in that: described carbon fiber is a chopped carbon fiber.
9, clever concrete sensor component according to claim 5 is characterized in that: described carbon fiber is a chopped carbon fiber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02132967 CN1227530C (en) | 2002-09-16 | 2002-09-16 | Clever concrete sensor component |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02132967 CN1227530C (en) | 2002-09-16 | 2002-09-16 | Clever concrete sensor component |
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| CN1484027A true CN1484027A (en) | 2004-03-24 |
| CN1227530C CN1227530C (en) | 2005-11-16 |
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| CN 02132967 Expired - Fee Related CN1227530C (en) | 2002-09-16 | 2002-09-16 | Clever concrete sensor component |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100336766C (en) * | 2005-08-17 | 2007-09-12 | 重庆大学 | Sensitive concrete |
| CN100367022C (en) * | 2005-03-09 | 2008-02-06 | 湖南科技大学 | Intelligent concrete test block and its producing and use |
| CN101915629A (en) * | 2010-07-09 | 2010-12-15 | 济南大学 | Freezing resistant cement based stress sensor element |
| CN102102328A (en) * | 2010-12-22 | 2011-06-22 | 哈尔滨工业大学 | Self-sensing pavement structure of road or bridge |
| CN102506692A (en) * | 2011-10-19 | 2012-06-20 | 西安建筑科技大学 | Cement-based intelligent composite material strain sensor and preparation method thereof |
| CN103232204A (en) * | 2013-05-03 | 2013-08-07 | 河海大学 | Sensing material, preparation method and application thereof |
| CN104446176A (en) * | 2014-08-25 | 2015-03-25 | 北京建筑大学 | Cement-based composite material and pressure sensor made of same |
| CN105891268A (en) * | 2016-05-24 | 2016-08-24 | 上海市建筑科学研究院 | Device and method for detecting stressed damage of graphene-based aggregate type concrete |
| CN105953821A (en) * | 2016-06-24 | 2016-09-21 | 青岛理工大学 | Piezoresistive/piezoelectric interlayer material, interlayer type sensor and preparation and use methods |
| CN107576436A (en) * | 2017-09-12 | 2018-01-12 | 中国水利水电科学研究院 | Concrete stress monitoring device and method |
| CN112160240A (en) * | 2020-10-23 | 2021-01-01 | 同济大学 | Stress damage self-induction concrete bridge deck and manufacturing method |
-
2002
- 2002-09-16 CN CN 02132967 patent/CN1227530C/en not_active Expired - Fee Related
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100367022C (en) * | 2005-03-09 | 2008-02-06 | 湖南科技大学 | Intelligent concrete test block and its producing and use |
| CN100336766C (en) * | 2005-08-17 | 2007-09-12 | 重庆大学 | Sensitive concrete |
| CN101915629A (en) * | 2010-07-09 | 2010-12-15 | 济南大学 | Freezing resistant cement based stress sensor element |
| CN102102328A (en) * | 2010-12-22 | 2011-06-22 | 哈尔滨工业大学 | Self-sensing pavement structure of road or bridge |
| CN102506692A (en) * | 2011-10-19 | 2012-06-20 | 西安建筑科技大学 | Cement-based intelligent composite material strain sensor and preparation method thereof |
| CN103232204B (en) * | 2013-05-03 | 2015-02-04 | 河海大学 | Sensing material, preparation method and application thereof |
| CN103232204A (en) * | 2013-05-03 | 2013-08-07 | 河海大学 | Sensing material, preparation method and application thereof |
| CN104446176A (en) * | 2014-08-25 | 2015-03-25 | 北京建筑大学 | Cement-based composite material and pressure sensor made of same |
| CN104446176B (en) * | 2014-08-25 | 2016-06-15 | 北京建筑大学 | A kind of cement-base composite material and voltage sensitive sensor thereof |
| CN105891268A (en) * | 2016-05-24 | 2016-08-24 | 上海市建筑科学研究院 | Device and method for detecting stressed damage of graphene-based aggregate type concrete |
| CN105953821A (en) * | 2016-06-24 | 2016-09-21 | 青岛理工大学 | Piezoresistive/piezoelectric interlayer material, interlayer type sensor and preparation and use methods |
| CN105953821B (en) * | 2016-06-24 | 2018-11-23 | 青岛理工大学 | Preparation method of piezoresistive/piezoelectric interlayer material |
| CN107576436A (en) * | 2017-09-12 | 2018-01-12 | 中国水利水电科学研究院 | Concrete stress monitoring device and method |
| CN112160240A (en) * | 2020-10-23 | 2021-01-01 | 同济大学 | Stress damage self-induction concrete bridge deck and manufacturing method |
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| Publication number | Publication date |
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| CN1227530C (en) | 2005-11-16 |
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