CN108818882B - Concrete intelligent aggregate and preparation method thereof - Google Patents
Concrete intelligent aggregate and preparation method thereof Download PDFInfo
- Publication number
- CN108818882B CN108818882B CN201810183431.4A CN201810183431A CN108818882B CN 108818882 B CN108818882 B CN 108818882B CN 201810183431 A CN201810183431 A CN 201810183431A CN 108818882 B CN108818882 B CN 108818882B
- Authority
- CN
- China
- Prior art keywords
- aggregate
- module
- matrix
- concrete
- humidity sensor
- 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
- 238000002360 preparation method Methods 0.000 title claims abstract description 13
- 239000011159 matrix material Substances 0.000 claims abstract description 40
- 239000000835 fiber Substances 0.000 claims abstract description 26
- 239000000919 ceramic Substances 0.000 claims abstract description 21
- 238000012544 monitoring process Methods 0.000 claims abstract description 14
- 238000003466 welding Methods 0.000 claims abstract description 10
- 230000006698 induction Effects 0.000 claims abstract description 8
- 238000005266 casting Methods 0.000 claims description 16
- 239000002184 metal Substances 0.000 claims description 16
- 229910052751 metal Inorganic materials 0.000 claims description 16
- 239000007788 liquid Substances 0.000 claims description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 11
- 229920000049 Carbon (fiber) Polymers 0.000 claims description 9
- 239000004917 carbon fiber Substances 0.000 claims description 9
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 8
- 238000001514 detection method Methods 0.000 claims description 6
- 238000011282 treatment Methods 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 4
- 238000012360 testing method Methods 0.000 claims description 4
- 238000011418 maintenance treatment Methods 0.000 claims description 3
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 3
- 238000000465 moulding Methods 0.000 claims description 3
- 238000002791 soaking Methods 0.000 claims description 3
- 230000004044 response Effects 0.000 abstract description 6
- 230000006870 function Effects 0.000 abstract description 4
- 230000008447 perception Effects 0.000 abstract description 3
- 230000002349 favourable effect Effects 0.000 abstract description 2
- 230000008859 change Effects 0.000 description 6
- 239000000203 mixture Substances 0.000 description 6
- 239000011083 cement mortar Substances 0.000 description 5
- 229910052802 copper Inorganic materials 0.000 description 5
- 239000010949 copper Substances 0.000 description 5
- 230000006872 improvement Effects 0.000 description 5
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 4
- 239000004576 sand Substances 0.000 description 4
- 239000004568 cement Substances 0.000 description 3
- 239000011347 resin Substances 0.000 description 3
- 229920005989 resin Polymers 0.000 description 3
- 229920003088 hydroxypropyl methyl cellulose Polymers 0.000 description 2
- 235000010979 hydroxypropyl methyl cellulose Nutrition 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- RTZKZFJDLAIYFH-UHFFFAOYSA-N ether Substances CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 239000001866 hydroxypropyl methyl cellulose Substances 0.000 description 1
- UFVKGYZPFZQRLF-UHFFFAOYSA-N hydroxypropyl methyl cellulose Chemical compound OC1C(O)C(OC)OC(CO)C1OC1C(O)C(O)C(OC2C(C(O)C(OC3C(C(O)C(O)C(CO)O3)O)C(CO)O2)O)C(CO)O1 UFVKGYZPFZQRLF-UHFFFAOYSA-N 0.000 description 1
- 239000004816 latex Substances 0.000 description 1
- 229920000126 latex Polymers 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B1/00—Producing shaped prefabricated articles from the material
- B28B1/52—Producing shaped prefabricated articles from the material specially adapted for producing articles from mixtures containing fibres, e.g. asbestos cement
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B1/00—Producing shaped prefabricated articles from the material
- B28B1/08—Producing shaped prefabricated articles from the material by vibrating or jolting
- B28B1/087—Producing shaped prefabricated articles from the material by vibrating or jolting by means acting on the mould ; Fixation thereof to the mould
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B23/00—Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/38—Concrete; Lime; Mortar; Gypsum; Bricks; Ceramics; Glass
- G01N33/383—Concrete or cement
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Medicinal Chemistry (AREA)
- Food Science & Technology (AREA)
- Physics & Mathematics (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
- Investigating Or Analyzing Materials By The Use Of Fluid Adsorption Or Reactions (AREA)
Abstract
The invention provides a concrete intelligent aggregate which comprises an aggregate matrix, a piezoelectric ceramic induction module, a humidity sensor module, a fiber resistor and a microcircuit module, wherein the piezoelectric ceramic induction module, the humidity sensor module and the fiber resistor are embedded in the aggregate matrix, the microcircuit module is used for connecting the piezoelectric ceramic induction module and the humidity sensor module, and the fiber resistor is uniformly distributed in the aggregate matrix. The invention also provides a preparation method of the concrete intelligent aggregate, which is characterized by comprising the steps of welding, positioning, forming, monitoring, calibrating and the like. Through setting up humidity transducer module and fibre resistance, can also carry out failure compensation with humidity transducer module and fibre resistance to the signal acquisition function of intelligence aggregate under the condition that piezoceramics response module became invalid to the effective life of extension intelligence aggregate improves the perception precision of intelligence aggregate, is favorable to reducing because of concrete building structural damage destroys the possibility that leads to the occurence of failure, is difficult for becoming invalid to concrete structure security performance monitoring.
Description
Technical Field
The invention relates to a concrete humidity detection device and a preparation method thereof, in particular to concrete intelligent aggregate and a preparation method thereof.
Background
The performance of the intelligent aggregate is the key for improving the damage monitoring research of the concrete structure, and is increasingly paid more attention by researchers in various countries, the damage state of the concrete is actively monitored by arranging the intelligent aggregate on the surface or in the concrete, and the stability of the concrete is evaluated and predicted, so that the safety accidents caused by the further development of the concrete damage are reduced.
Traditional intelligent aggregate is mainly put piezoelectric ceramic as the perception element in the centre, and both sides are cylindrical or cubic cement mortar test block, and the three bonds the intelligent aggregate that forms sandwich structure with cement mortar, and the appearance of this type of intelligent aggregate is mostly cylinder or cube, and appearance structure and function are all comparatively single, and be out of order because of piezoelectric ceramic piece easily damages and lead to whole intelligent aggregate in the in-service use, finally lead to the inefficacy to concrete structure security performance monitoring.
In view of the above, the applicant has made intensive studies on the structure of the concrete intelligent aggregate and the preparation method thereof, and has developed the present application.
Disclosure of Invention
The invention aims to provide a concrete intelligent aggregate which is difficult to lose effectiveness in monitoring the safety performance of a concrete structure and a preparation method thereof.
In order to achieve the purpose, the invention adopts the following technical scheme:
the utility model provides a concrete intelligence aggregate, includes the aggregate base member, embeds piezoceramics response module, humidity transducer module and fibre resistance in the aggregate base member and be used for connecting piezoceramics response module with the microcircuit module of humidity transducer module, fibre resistance is evenly distributed in the aggregate base member.
As an improvement of the invention, the aggregate matrix is a cement mortar mixture, cement fine aggregate concrete or resin sand-based mixture.
As an improvement of the invention, the fiber resistor comprises chopped carbon fiber and graphite powder.
As an improvement of the invention, a metal mesh connected with the microcircuit module is arranged on the aggregate matrix, and one end of the metal mesh penetrates out of the aggregate matrix to form an electrode.
As an improvement of the invention, the metal mesh is also connected with a copper mesh, and the copper mesh is embedded in the aggregate matrix.
A preparation method of concrete intelligent aggregate is characterized by comprising the following steps,
s1, welding, namely welding one end of the metal mesh, the port corresponding to the piezoelectric ceramic chip module and the port corresponding to the humidity sensor module with corresponding leads on the microcircuit module respectively, and performing waterproof treatment on the welding position;
s2, positioning, namely respectively fixedly placing the metal mesh, the piezoelectric ceramic chip module and the humidity sensor module at preset positions of the aggregate mold;
s3, molding, namely uniformly mixing the fiber resistor into an aggregate casting liquid according to a preset proportion, uniformly casting the aggregate casting liquid into an aggregate mold, continuously vibrating the aggregate mold in the casting process, ensuring that one end of the metal mesh is exposed out of the liquid level to form an electrode, placing the aggregate mold in a room-temperature environment for standing for a preset time after the casting is finished, then performing demolding treatment to form an aggregate matrix, and then performing maintenance treatment on the aggregate matrix;
s4, monitoring, namely connecting the electrode on the aggregate matrix with an external detection control system, then respectively placing the aggregate matrix in a dry environment and a water environment, monitoring by using the humidity sensor module to obtain humidity characteristics of the corresponding environment, and establishing a normal working characteristic interval of the humidity sensor module according to the humidity characteristics;
and S5, calibrating, namely soaking the aggregate matrix in water, repeatedly testing the range and stability of the input or output signal of the electrode, and calibrating the working parameters of the intelligent concrete aggregate according to the range and stability.
As a modification of the present invention, in step S5, a plurality of the aggregate matrixes are simultaneously soaked in water, and the distance between two adjacent aggregate matrixes is 20 cm.
As an improvement of the invention, the fiber resistor comprises chopped carbon fiber and graphite powder.
By adopting the technical scheme, the invention has the following beneficial effects:
1. through setting up humidity transducer module and fibre resistance, can also carry out failure compensation with humidity transducer module and fibre resistance to the signal acquisition function of intelligence aggregate under the condition that piezoceramics response module became invalid to the effective life of extension intelligence aggregate improves the perception precision of intelligence aggregate, is favorable to reducing because of concrete building structural damage destroys the possibility that leads to the occurence of failure, is difficult for becoming invalid to concrete structure security performance monitoring.
2. The intelligent aggregate provided by the invention can change the shape by changing the shape of the aggregate mold cavity, and has various shape structures.
Drawings
FIG. 1 is a schematic structural diagram of the concrete intelligent aggregate of the invention.
The designations in the figures correspond to the following:
10-aggregate matrix; 20-a piezoelectric ceramic sensing module;
30-a humidity sensor module; 50-a microcircuit module;
51-a metal mesh sheet;
52-copper mesh.
Detailed Description
The invention is further described with reference to the following figures and specific embodiments.
As shown in fig. 1, the concrete intelligent aggregate provided by the embodiment includes an aggregate substrate 10, a piezoelectric ceramic sensing module 20 embedded in the aggregate substrate 10, a humidity sensor module 30, a fiber resistor, and a microcircuit module 50 for connecting the piezoelectric ceramic sensing module 20 and the humidity sensor module 30, wherein the piezoelectric ceramic sensing module 20, the humidity sensor module 30, and the fiber resistor are all provided in plurality, and the working voltage is 0-220V, that is, the working voltage is adjustable.
The aggregate matrix 10 is a solidified cement mortar mixture, cement fine aggregate concrete or resin sand-based mixture, and is mainly used for protecting each module in the aggregate matrix and forming an appearance structure of concrete intelligent aggregate. It should be noted that the outline structure and specific dimensions of the aggregate matrix 10 can be set according to actual needs, and in this embodiment, the outline structure of the aggregate matrix 10 is a zigzag structure.
The piezoceramic sensing module 20 is a module used in conventional intelligent aggregate, and the specific placement position of the module in the aggregate matrix 10 needs to be determined according to the actual shape and structure of the aggregate matrix 10. Because concrete intelligent aggregate can produce the volume change because of the influence of factors such as external load or temperature stress, through the corresponding relation between the volume change of aggregate base member 10 and the piezoelectric effect of piezoceramics response module 20 under the analysis different states, realize monitoring and aassessment to the security performance of intelligent aggregate place concrete structure position, have the characteristic of high sensitivity, specifically, piezoceramics response module 20 can realize predicting and aassessment to the atress state of intelligent aggregate through the change of output power-electric characteristic.
The moisture sensor module 30 is also a conventional module, and is available directly from the market, and the specific placement position thereof in the aggregate matrix 10 also needs to be determined according to the actual shape structure of the aggregate matrix 10. The humidity sensor module 30 is mainly used for collecting information of the ambient humidity where the humidity sensor module is located. By analyzing the difference between the humidity parameter of the environment where the intelligent aggregate is located in the normal state and the humidity values in different humid states, the compactness or crack existence state of the concrete matrix material is analyzed, and the health state of the concrete material can be pre-judged.
The fiber resistance comprises 5mm chopped carbon fibers and 200-mesh graphite powder, the proportion of the chopped carbon fibers and the graphite powder can be determined according to actual needs, the chopped carbon fibers and the graphite powder are uniformly distributed in the aggregate matrix 10 as conductors, and uniform continuous items are formed in the molded aggregate matrix 10 through preparation processes such as vibration or shaking up. Because concrete intelligent aggregate can produce the volume change because of the influence of factors such as external load or temperature stress to lead to the resistance value of fibre resistance to produce corresponding change, fibre resistance accessible self resistance characteristic's under different conditions changes the atress environment of intelligent aggregate and carries out the auxiliary judgement like this.
When the intelligent aggregate comprehensive analysis and evaluation system is used, the humidity sensor module 30 and the fiber resistor are used as auxiliary modules to provide auxiliary information for the piezoelectric ceramic induction module 20, the information collected by the piezoelectric ceramic induction module 20 is used as a main information source in the intact state of the intelligent aggregate, and the information collected by other modules is used as auxiliary information to be compared and fitted with the information collected by the piezoelectric ceramic induction module 20, so that the information is comprehensively analyzed and evaluated; when the piezoelectric ceramic sensing module 20 is damaged or fails, the humidity sensor 30 and the fiber resistor are used as main information acquisition modules to analyze and evaluate information, so that the reliability of monitoring concrete structure information by the intelligent aggregate is improved, the service life of the intelligent aggregate is prolonged, and the failure compensation function of the intelligent aggregate is realized.
The embodiment also provides a preparation method of the concrete intelligent aggregate, which comprises the following steps:
and S1, welding, namely welding one end of the metal mesh 51, the port corresponding to the piezoelectric ceramic piece module 20 and the port corresponding to the humidity sensor module 30 with corresponding leads on the micro circuit module 50 respectively, and performing waterproof treatment on the welding position.
And S2, positioning, and fixedly placing the metal mesh 51, the piezoelectric ceramic chip module 20 and the humidity sensor module 30 on the preset positions of an aggregate mould, wherein the aggregate mould is the same as a conventional concrete mould, and the details are not described herein.
And S3, molding, namely mixing fiber resistors according to a preset ratio and uniformly mixing the fiber resistors into the aggregate casting liquid, wherein the fiber resistors comprise 5mm chopped carbon fibers and 200-mesh graphite powder, the mixing amount of the chopped carbon fibers is 1.25% of the mass of sand in the aggregate casting liquid, the mass ratio of the graphite powder to the chopped carbon fibers is 1.2:1.0, the aggregate casting liquid can be cement mortar mixture, cement fine stone concrete or resin sand-based mixture, in the embodiment, the water-to-rubber ratio W/C of the aggregate casting liquid is 0.35, and the mixing amounts of a water reducing agent, a re-dispersible latex powder (RPP) and hydroxypropyl methyl cellulose ether (HPMC) in the aggregate casting liquid are respectively 0.4%, 0.2% and 0.2% of the using amount of the gelling material.
And then uniformly pouring the aggregate casting liquid into an aggregate mould, continuously vibrating the aggregate mould in the pouring process, ensuring that one end of the metal mesh sheet 51 is exposed out of the liquid surface to form an electrode after the pouring is finished, slightly vibrating the aggregate mould up and down in the pouring process at a frequency of once per second and an amplitude of 1-2mm, adjusting the vibration frequency to be 10 times per 1 second and an amplitude of 1mm after the pouring is finished, standing the aggregate mould in a room-temperature environment for a preset time (the preset time is 24 hours in the embodiment) after the pouring is finished, then performing demoulding treatment to form an aggregate matrix 10, and then performing maintenance treatment on the aggregate matrix 10.
And S4, monitoring, namely, connecting the electrode on the aggregate matrix 10 with an external detection control system, then respectively placing the aggregate matrix 10 in a dry environment and a water environment, monitoring by using the humidity sensor module 30 to obtain the humidity characteristic of the corresponding environment, and establishing a normal working characteristic interval of the humidity sensor module 30 by taking the humidity characteristic as the basis.
S5, calibrating, namely soaking the aggregate matrixes 10 in water, wherein the distance between each aggregate matrix 10 and the water surface is 10cm, when a plurality of aggregate matrixes 10 exist, a plurality of aggregate matrixes 10 are soaked in water at the same time, and the distance between every two adjacent aggregate matrixes 10 is 20 cm. And then repeatedly testing the range and stability of the input or output signal of the electrode, and calibrating the working parameters of the concrete intelligent aggregate according to the range and stability.
And S6, recording, sorting and recording the calibrated related parameters of the intelligent aggregate, and placing in a classified manner to finish the preparation of the intelligent aggregate.
The present invention is described in detail with reference to the attached drawings, but the embodiments of the present invention are not limited to the above embodiments, and those skilled in the art can make various modifications to the present invention based on the prior art, which fall within the scope of the present invention.
Claims (3)
1. The preparation method of the concrete intelligent aggregate is characterized by comprising an aggregate matrix, a piezoelectric ceramic induction module embedded in the aggregate matrix, a humidity sensor module, a fiber resistor and a microcircuit module for connecting the piezoelectric ceramic induction module and the humidity sensor module, wherein the fiber resistor is uniformly distributed in the aggregate matrix;
the preparation method comprises the following steps of,
s1, welding, namely welding one end of the metal mesh, the port corresponding to the piezoelectric ceramic chip module and the port corresponding to the humidity sensor module with corresponding leads on the microcircuit module respectively, and performing waterproof treatment on the welding position;
s2, positioning, namely respectively fixedly placing the metal mesh, the piezoelectric ceramic chip module and the humidity sensor module at preset positions of the aggregate mold;
s3, molding, namely uniformly mixing the fiber resistor into an aggregate casting liquid according to a preset proportion, uniformly casting the aggregate casting liquid into an aggregate mold, continuously vibrating the aggregate mold in the casting process, ensuring that one end of the metal mesh is exposed out of the liquid level to form an electrode, placing the aggregate mold in a room-temperature environment for standing for a preset time after the casting is finished, then performing demolding treatment to form an aggregate matrix, and then performing maintenance treatment on the aggregate matrix;
s4, monitoring, namely connecting the electrode on the aggregate matrix with an external detection control system, then respectively placing the aggregate matrix in a dry environment and a water environment, monitoring by using the humidity sensor module to obtain humidity characteristics of the corresponding environment, and establishing a normal working characteristic interval of the humidity sensor module according to the humidity characteristics;
and S5, calibrating, namely soaking the aggregate matrix in water, repeatedly testing the range and stability of the input or output signal of the electrode, and calibrating the working parameters of the intelligent concrete aggregate according to the range and stability.
2. The method for preparing a concrete smart aggregate according to claim 1, wherein a plurality of the aggregate matrixes are simultaneously soaked in water at step S5, and a distance between two adjacent aggregate matrixes is 20 cm.
3. The method for preparing a concrete smart aggregate according to claim 1 or 2, wherein the fiber resistor comprises chopped carbon fiber and graphite powder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810183431.4A CN108818882B (en) | 2018-03-06 | 2018-03-06 | Concrete intelligent aggregate and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810183431.4A CN108818882B (en) | 2018-03-06 | 2018-03-06 | Concrete intelligent aggregate and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108818882A CN108818882A (en) | 2018-11-16 |
| CN108818882B true CN108818882B (en) | 2020-05-19 |
Family
ID=64154061
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810183431.4A Active CN108818882B (en) | 2018-03-06 | 2018-03-06 | Concrete intelligent aggregate and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108818882B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112160240A (en) * | 2020-10-23 | 2021-01-01 | 同济大学 | Stress damage self-induction concrete bridge deck and manufacturing method |
| CN117401944A (en) * | 2023-11-06 | 2024-01-16 | 广州航海学院 | Cement-based intelligent material and preparation method thereof |
Family Cites Families (17)
| 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 |
| US20070065071A1 (en) * | 2005-06-30 | 2007-03-22 | Infoscitex | Humidity sensor and method for monitoring moisture in concrete |
| US7987728B2 (en) * | 2006-07-07 | 2011-08-02 | The University Of Houston System | Piezoceramic-based smart aggregate for unified performance monitoring of concrete structures |
| CN101294430A (en) * | 2007-04-29 | 2008-10-29 | 哈尔滨工业大学空间钢结构幕墙有限公司 | Carbon fiber autoclaved aerated concrete slab and application thereof |
| CN101319924A (en) * | 2008-06-30 | 2008-12-10 | 西安交通大学 | Imbedded wireless stress/strain/temperature sensor test platform |
| CN102024900A (en) * | 2010-10-29 | 2011-04-20 | 济南大学 | Piezoelectric sensor, beam type concrete sensor, and preparation methods and application thereof |
| CN102507664B (en) * | 2011-11-08 | 2013-06-19 | 浙江大学 | Conductive polymer composite nanofiber resistive-type humidity sensor and preparation method thereof |
| CN103048384B (en) * | 2012-12-20 | 2017-12-26 | 刘铁军 | A kind of concrete humidity monitoring method based on piezoelectric intelligent aggregate |
| CN203639919U (en) * | 2013-09-29 | 2014-06-11 | 长沙聚创建筑科技有限公司 | Measuring and control device for concrete curing |
| US9835515B2 (en) * | 2014-10-10 | 2017-12-05 | Stmicroeletronics S.R.L. | Pressure sensor with testing device and related methods |
| CN105716885A (en) * | 2014-12-03 | 2016-06-29 | 中国铁路总公司 | High-speed railway bridge safety assessment method oriented for whole process |
| CN204965161U (en) * | 2015-09-22 | 2016-01-13 | 杭州冷倍冠科技有限公司 | Concrete placement control system |
| CN105544346A (en) * | 2015-12-21 | 2016-05-04 | 无锡信大气象传感网科技有限公司 | Anti-icing and anti-freezing system for highway bridge with built-in test function |
| CN106770653B (en) * | 2016-12-05 | 2024-02-20 | 大连理工大学 | Stacked piezoelectric intelligent aggregate for concrete structure health monitoring |
| CN106501365A (en) * | 2016-12-21 | 2017-03-15 | 福州大学 | A kind of piezoelectric intelligent aggregate sensor array and using method for structure monitoring |
| CN206959125U (en) * | 2017-06-02 | 2018-02-02 | 崔中全 | A kind of novel architecture ground heating equipment |
| CN107561123B (en) * | 2017-09-29 | 2024-04-12 | 长安大学 | Concrete beam damage monitoring system and monitoring method |
-
2018
- 2018-03-06 CN CN201810183431.4A patent/CN108818882B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN108818882A (en) | 2018-11-16 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108818882B (en) | Concrete intelligent aggregate and preparation method thereof | |
| US7987728B2 (en) | Piezoceramic-based smart aggregate for unified performance monitoring of concrete structures | |
| CN103324177B (en) | Cement concrete production run dynamic quality remote monitoring system and method thereof | |
| CN202870024U (en) | Intelligent piezoelectric aggregate sensor for concrete structure | |
| CN111187073A (en) | 3-3 type piezoelectric ceramic/cement composite material and preparation method thereof | |
| CN107607412A (en) | A kind of concrete structure combined type strain monitoring unit and its state evaluating method | |
| CN103335752A (en) | Remotely and dynamically surveying system and method for road pre-buried shear stress | |
| CN101050985A (en) | Local monitoring pressure sensitive cement base stress and strain sensor of concrete structure | |
| CN209745968U (en) | Mortar free expansion rate absolute humidity and water-nutrient double-measuring device | |
| CN1818643A (en) | Pressure-sensitive performance testing method of pressure-sensitive cement-base materials | |
| CN112857963B (en) | Concrete constraint stress component separation method and system | |
| CN207937088U (en) | A kind of concrete plane dynamic stress sensor based on piezoelectric material | |
| CN105300575B (en) | Monitor smart material sensor, making and the application method of bituminous paving compression | |
| CN108831990B (en) | Preparation method of full-stress sensor based on cement-based piezoelectric composite material element | |
| CN111521314A (en) | Concrete triaxial stress measuring device and manufacturing method and measuring method thereof | |
| CN208848931U (en) | Resultant stress sensor based on 1-3 type cement base piezoelectric composite material element | |
| CN205614809U (en) | Pour mould of formula of partly buryying concrete | |
| Westman | 11 BASIC CREEP AND RELAXATION OF YOUNG CONCRETE | |
| CN102506692B (en) | Cement-based intelligent composite material strain sensor and preparation method thereof | |
| CN108151925A (en) | Concrete plane dynamic stress sensor based on piezoelectric material | |
| CN211904513U (en) | Concrete triaxial stress measuring device | |
| CN108039256A (en) | A kind of thermal resistance row chip and preparation method thereof | |
| RU203093U1 (en) | Device for monitoring the state of reinforced concrete structures | |
| CN113916147A (en) | Evaluation method for embedded fiber grating sensor and asphalt pavement cooperative deformation | |
| CN112556898A (en) | Piezoelectric sensor for monitoring one-way stress in component and application thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |