CN212060031U - Composite metal component embedded type long-acting reference electrode for concrete reinforcing steel bar - Google Patents
Composite metal component embedded type long-acting reference electrode for concrete reinforcing steel bar Download PDFInfo
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- CN212060031U CN212060031U CN202020186158.3U CN202020186158U CN212060031U CN 212060031 U CN212060031 U CN 212060031U CN 202020186158 U CN202020186158 U CN 202020186158U CN 212060031 U CN212060031 U CN 212060031U
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Abstract
The utility model discloses a concrete is buried formula long-term reference electrode of composite metal component for reinforcing bar. The composite metal electrode comprises a composite metal electrode, a filling material and a lead; the filling material is formed by sequentially filling a porous mortar layer and an alkaline conductive slurry layer in a fabric shell from outside to inside; the composite metal electrode is embedded in the alkaline conductive slurry layer in the filling material; one end of the lead is connected to the composite metal electrode, and the other end of the lead penetrates through the packing material and extends to the outside. The utility model can be used stably in the strong alkali environment in the concrete, and has longer service life; the composite metal electrode can be connected with an external electrolyte through porous mortar, so that the transmission of ions is ensured, and the liquid connection potential of a contact surface can be reduced; the preparation is simple, the raw materials are easy to obtain, and the length of the composite metal electrode is changed so as to be suitable for different service periods; can ensure that the electrolyte solution does not seep into the concrete structure and does not pollute the interior of the concrete.
Description
Technical Field
The utility model relates to a concrete is buried formula long-term reference electrode of composite metal component for reinforcing bar.
Background
In order to ensure the safety, durability and usability of a reinforced concrete structure, a sensor system capable of monitoring the service state of a steel bar in concrete in real time is developed, and the sensor system has important practical value and significance. However, due to the highly alkaline environment inside the concrete, higher demands are placed on the components in the sensor system, in particular on the reference electrode. Conventionally, a portable reference electrode is generally used for potential measurement, the reference electrode is contacted with the surface of concrete, and the potential of a steel bar near the contact position is measured, but because some structural key parts, such as the bottom of a wharf or a pier, are inconvenient to contact, an embedded reference electrode is often adopted.
At present, Ag/AgCl, Cu/CuSO4The reference electrode is buried in concrete, but the electrolyte solution in the liquid reference electrode is often leaked to pollute the interior of a concrete structure, so that the use of the reference electrode is limited. Therefore, the development of a reference electrode which can stably work in a concrete high-alkaline environment and has no pollution to an internal structure is a main research direction.
The manganese dioxide reference electrode with the patent number of 200710016441.0 applied to concrete has the advantages that metal/metal insoluble salt is a relatively stable electrode pair, and the stability can be ensured only by a small amount of water; however, in the actual preparation process, the metal insoluble salt is easy to generate various valence states and crystal forms, so that the potential reproducibility of the electrodes prepared in different batches is not high. The Ag/AgCl solid-state reference electrode with the patent number of 201711381507.6 and the preparation method thereof have the advantages that the gel electrolyte of the simulated concrete pore solution is adopted to replace the traditional liquid electrolyte, so that the leakage of the electrolyte can be prevented; but the electrodeposited AgCl coating will be converted to Ag in a very basic environment2O, so at a pH higher than 12.5It is difficult to maintain the electrodes in a stable state. The composite embedded reference electrode for monitoring/detecting the corrosion of the reinforced concrete with patent number 201410087986.0 has the advantages that a porous ceramic enclosure is installed to reduce the hydraulic connection potential between the porous ceramic enclosure and a concrete medium, but in the installation process, the ceramic enclosure and a consolidation point of a sealing cylinder are easily damaged, and meanwhile, the enclosure is also easy to damage.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a composite metal component embedded type long-acting reference electrode for concrete reinforcing bar, which can be used for a long time in the strong alkali environment of concrete; the composite metal electrode of metal components is embedded in the filling material and fixed on the reinforcing steel bar for use, and the reference electrode can be used for a long time.
The utility model provides a composite metal component embedded long-acting reference electrode for concrete reinforcing bar, which comprises a composite metal electrode, a packing material and a lead;
the filling material is formed by sequentially filling a porous mortar layer and an alkaline conductive slurry layer in a fabric shell from outside to inside;
the composite metal electrode is embedded in the alkaline conductive slurry layer in the filling material;
one end of the lead is connected to the composite metal electrode, and the other end of the lead penetrates through the packing material and extends to the outside.
In the utility model discloses, the fabric shell is for gas permeability and water permeability.
In the reference electrode, the composite metal electrode is cylindrical.
In the present invention, the composite metal electrode is an electrode commonly used in the field.
In the above reference electrode, the packing material is spherical, ellipsoidal or cylindrical.
In the reference electrode, the porous mortar layer is filled with porous mortar; the porous mortar can be conventional porous mortar in the field, can be designed according to the actual concrete environment, and has the electric conductivity greater than that of the concrete at the actual measurement position.
In the reference electrode, the alkaline conductive slurry layer filling material is formed by mixing 10-30 g of high polymer material with every 100ml of simulated concrete pore liquid; the high polymer material can be sodium polyacrylate; the polymer material can be 15g, 10-15 g, 15-30 g or 12.5-25 g;
the simulated concrete pore liquid is supernatant liquid obtained by fully mixing and standing Portland cement and water according to the mass ratio of 1: 3.5-6.
In the reference electrode, the diameter of the composite metal electrode can be 10-30 mm, and the height of the composite metal electrode can be 30-50 mm.
In the reference electrode, the diameter of the packing material is 80-120 mm.
In the reference electrode, the thickness of the porous mortar layer is 10-30 mm.
In the reference electrode, the thickness of the alkaline conductive paste layer can be 10-20 mm, and the inner diameter of the alkaline conductive paste layer in the filling material is larger than the height of the composite metal electrode.
Use the utility model discloses the time, will the pack material is fixed in on the reinforcing bar.
The utility model has the advantages of it is following:
the utility model can be used stably in the strong alkali environment in the concrete, and has longer service life; the composite metal electrode can be connected with an external electrolyte through porous mortar, so that the transmission of ions is ensured, and the liquid connection potential of a contact surface can be reduced; the preparation is simple, the raw materials are easy to obtain, and the length of the composite metal electrode is changed so as to be suitable for different service periods; can ensure that the electrolyte solution does not seep into the concrete structure and does not pollute the interior of the concrete.
Drawings
Fig. 1 is a schematic structural diagram of the composite metal buried long-acting reference electrode for concrete of the present invention.
The individual labels in the figure are as follows:
1 a composite metal electrode; 2 a porous mortar layer; 3 a layer of alkaline conductive paste; 4, conducting wires; 5 a fabric shell.
Detailed Description
The experimental procedures used in the following examples are all conventional procedures unless otherwise specified.
Materials, reagents and the like used in the following examples are commercially available unless otherwise specified.
The present invention will be further described with reference to the accompanying drawings, but the present invention is not limited to the following embodiments.
Fig. 1 is a schematic structural diagram of the embedded composite metal type long-acting reference electrode for concrete according to the present invention. The composite metal electrode comprises a composite metal electrode 1, a filling material and a lead 4;
wherein, the filling material is formed by sequentially filling a porous mortar layer 2 and an alkaline conductive slurry layer 3 into a fabric shell 5 from outside to inside;
the composite metal electrode 1 is embedded in the filling material, one section of the lead 4 is connected with the composite metal electrode 1, and the other end of the lead penetrates through the filling material and extends to the outside.
Further, the shape of the composite metal electrode 1 is cylindrical, the diameter may be 10 to 30mm, and the height may be 30 to 50 mm.
Further, the shape of the packing is spherical, ellipsoidal or cylindrical.
Furthermore, the porous mortar layer 2 is filled with porous mortar, and the mixture ratio design is carried out according to the actual concrete environment, so that the electric conductivity of the porous mortar layer is greater than that of the concrete at the actual measurement position.
Furthermore, the filling material of the alkaline conductive slurry layer 3 is formed by mixing 15g of high polymer material sodium polyacrylate and per 100ml of simulated concrete pore liquid; the simulated concrete pore liquid is supernatant liquid obtained by fully mixing and standing Portland cement and water according to the ratio of 1: 5.
Furthermore, the diameter of the packing material can be 80-120 mm.
Further, the thickness of the porous mortar layer can be 10-30 mm.
Further, the height of the alkaline conductive paste layer may be 10 to 20 mm.
The utility model relates to a concrete is with long-term reference electrode of combined metal formula of buryying's application method as follows:
will the utility model discloses on the long-term reference electrode's of composite metal buryyed padding material is fixed in the reinforcing bar for the concrete, the wire is connected to the constant potential rectifier and is used.
Claims (9)
1. A long-term reference electrode of formula is buryyed to composite metal component for concrete reinforcement which characterized in that: comprises a composite metal electrode, a filling material and a lead;
the filling material is formed by sequentially filling a porous mortar layer and an alkaline conductive slurry layer in a fabric shell from outside to inside;
the composite metal electrode is embedded in the alkaline conductive slurry layer in the filling material;
one end of the lead is connected to the composite metal electrode, and the other end of the lead penetrates through the packing material and extends to the outside.
2. The reference electrode of claim 1, wherein: the shape of the composite metal electrode is cylindrical.
3. The reference electrode of claim 1, wherein: the shape of the packing material is spherical, ellipsoidal or cylindrical.
4. The reference electrode of claim 1, wherein: and the porous mortar layer is filled with porous mortar.
5. The reference electrode of claim 1, wherein: the alkaline conductive slurry layer filling material is formed by mixing 10-30 g of high polymer material and per 100ml of simulated concrete pore liquid;
the simulated concrete pore liquid is supernatant liquid obtained by fully mixing and standing Portland cement and water according to the mass ratio of 1: 3.5-6.
6. The reference electrode of claim 2, wherein: the diameter of the composite metal electrode is 10-30 mm, and the height of the composite metal electrode is 30-50 mm.
7. The reference electrode of claim 1 or 3, wherein: the diameter of the packing material is 80-120 mm.
8. The reference electrode of claim 1 or 4, wherein: the thickness of the porous mortar layer is 10-30 mm.
9. The reference electrode of claim 1 or 5, wherein: the thickness of the alkaline conductive slurry layer is 10-20 mm.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202020186158.3U CN212060031U (en) | 2020-02-19 | 2020-02-19 | Composite metal component embedded type long-acting reference electrode for concrete reinforcing steel bar |
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| CN202020186158.3U CN212060031U (en) | 2020-02-19 | 2020-02-19 | Composite metal component embedded type long-acting reference electrode for concrete reinforcing steel bar |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ES2968550A1 (en) * | 2023-10-18 | 2024-05-10 | Univ Valencia Politecnica | REFERENCE ELECTRODE FOR MONITORING SYSTEMS OF REINFORCED CONCRETE STRUCTURES AND ITS USE (Machine-translation by Google Translate, not legally binding) |
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2020
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ES2968550A1 (en) * | 2023-10-18 | 2024-05-10 | Univ Valencia Politecnica | REFERENCE ELECTRODE FOR MONITORING SYSTEMS OF REINFORCED CONCRETE STRUCTURES AND ITS USE (Machine-translation by Google Translate, not legally binding) |
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