CN103198872A - Resistance-reducing composition and application to soil thereof - Google Patents
Resistance-reducing composition and application to soil thereof Download PDFInfo
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- CN103198872A CN103198872A CN2013100895873A CN201310089587A CN103198872A CN 103198872 A CN103198872 A CN 103198872A CN 2013100895873 A CN2013100895873 A CN 2013100895873A CN 201310089587 A CN201310089587 A CN 201310089587A CN 103198872 A CN103198872 A CN 103198872A
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- resistance
- bentonite
- composition
- resistance composition
- soil
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- Manufacturing Of Electrical Connectors (AREA)
- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
- Soil Conditioners And Soil-Stabilizing Materials (AREA)
Abstract
The invention provides a resistance-reducing composition and application to soil thereof. The resistance-reducing composition comprises, by weight, 90-95 parts of bentonite, and 5-10 parts of grounding reinforcing materials with specific resistance of 0.1-0.15 ohm meter. According to the technical scheme, after the bentonite and the grounding reinforcing materials with the specific resistance of 0.1-0.15 ohm meter are mixed, resistance-reducing capacities of the bentonite are optimized by utilizing the low specific resistance of the grounding reinforcing materials, water-retaining properties of the bentonite are utilized at the same time so that the low specific resistance of the grounding reinforcing materials and superiorities of long-term effectiveness are brought into full play and geometric dimensions of a grounding electrode are further increased, and therefore the grounding resistance is lowered. As the grounding reinforcing materials and the bentonite are mixed for being used, the use amount of the grounding reinforcing materials of high cost is reduced.
Description
Technical field
The present invention relates to the electric conducting material technical field, hinder composition and the application in soil thereof in particular to a kind of falling.
Background technology
Resistance reducing agent is a kind ofly to be wrapped in around level and the vertical grounding electrode for earthing device, and the composite material that reduces the earth resistance function is arranged.The resistivity of itself is lower, can reduce the contact resistance of electrode between soil, prolongs the useful life of earthing device.
Resistance reducing agent at present commonly used has chemical resistance-reducing agent and physics resistance reducing agent, and the resistance mechanism of mainly falling of chemical resistance-reducing agent is infiltration along with resistance reducing agent, increases the concentration of conductive ion in the soil, improves the soil resistivity around the earth electrode.The main component of chemical resistance-reducing agent is metallic salt, because diffusivity, the good penetrability of ion, around soil resistivity can obtain very fast improvement after applying.But because the ionizable metal salt in the chemical resistance-reducing agent can very fast dissolving and loss along with rainwater and phreatic washing away, its resistance reducing effect can only be kept two to three years usually, simultaneously because the permeability of ion and diffusivity and ambient temperature are closely bound up, under northern cold cold weather condition or in the frozen soil, chemical resistance-reducing agent can't play the resistance effect of falling.The physics resistance reducing agent mainly is to reduce earth resistance by changing electrode size, and be not subjected to landform, geology and climatic influences, but can remain the stability of earth resistance, and because its conductive ion is free electron, therefore effective time is longer than the effective time of chemical resistance-reducing agent usually, still higher owing to wherein containing the special material costs such as alloy of some needs.
Summary of the invention
The present invention aims to provide a kind of fall resistance composition and the application in soil thereof, has reduced the cost of long-term-effective dropping resistance composition.
To achieve these goals, according to an aspect of the present invention, provide a kind of resistance composition that falls, the above-mentioned resistance composition that falls comprises in weight portion: 90～95 parts of bentonites; 5～10 parts of resistivity are the ground connection reinforcing material of 0.1～0.15 Ω m.
Further, above-mentioned ground connection reinforcing material is the GEM resistance reducing agent.
Further, above-mentioned falling hindered the electroconductive cement that composition also comprises 0.05～0.2 weight portion.
Further, above-mentioned resistivity of falling the resistance composition is 1.0～2.0 Ω m.
Further, the weight ratio of above-mentioned bentonite, ground connection reinforcing material and electroconductive cement is 95: 5: 0.1.
Further, above-mentioned bentonite is sodium bentonite.
Further, above-mentioned bentonitic active component comprises: Cu
2+, Mg
2+, Na
+, K
+
Further, above-mentioned falling hindered the auxiliary agent that composition also comprises 10～15 weight portions, and auxiliary agent comprises graphite, charcoal fiber, nano-silver powder.
According to a further aspect in the invention, provide a kind of above-mentioned application of resistance composition in soil of falling.
Use technical scheme of the present invention, bentonite has very strong water absorption and water-retaining property, present starchiness after the bentonite suction, can pin moisture effectively, prevent water loss, bentonite volume after suction can expand into 2～3 times of original volume in addition, can form contacting between stable and the soil around earth electrode, can reduce contact resistance to the influence of earth resistance measured value; Simultaneously because the ground connection reinforcing material belongs to the physics resistance reducing agent does not dissolve and be regardless of solution, be not subjected to the influence that rainwater, underground water washes away and can under cold conditions, use, its useful life is longer; Be after the ground connection reinforcing material of 0.1～0.15 Ω m mixes with bentonite and resistivity, utilize the low-resistivity of ground connection reinforcing material to optimize the bentonitic resistance ability of falling, utilize bentonitic water-retaining property that the advantage of the low-resistivity of ground connection reinforcing material and long-term effectiveness is not fully exerted simultaneously and further increase the physical dimension of earth electrode, thereby reduced earth resistance; Because ground connection reinforcing material and bentonite are used the use amount that has reduced the higher ground connection reinforcing material of cost with.
Embodiment
Need to prove that under the situation of not conflicting, embodiment and the feature among the embodiment among the application can make up mutually.Describe the present invention in detail below in conjunction with embodiment.
In a kind of typical execution mode of the present invention, a kind of resistance composition that falls is provided, this falls the resistance composition and comprises in weight portion: 90～95 parts of bentonites; 5～10 parts of resistivity are the ground connection reinforcing material of 0.1～0.15 Ω m.
The bentonite that falls in the resistance composition of the present invention has very strong water absorption and water-retaining property, present starchiness after the bentonite suction, can pin moisture effectively, prevent water loss, bentonite volume after suction can expand into 2～3 times of original volume in addition, contacting between stable and the soil can be formed around the earth electrode, contact resistance can be reduced to the influence of earth resistance measured value; Simultaneously because the ground connection reinforcing material belongs to the physics resistance reducing agent does not dissolve and be regardless of solution, be not subjected to the influence that rainwater, underground water washes away and can under cold conditions, use, its useful life is longer; Be after the ground connection reinforcing material of 0.1～0.15 Ω m mixes with bentonite and resistivity, utilize the low-resistivity of ground connection reinforcing material to optimize the bentonitic resistance ability of falling, utilize bentonitic water-retaining property that the advantage of the low-resistivity of ground connection reinforcing material and long-term effectiveness is not fully exerted simultaneously and further increase the physical dimension of earth electrode, thereby reduced earth resistance; Because ground connection reinforcing material and bentonite are used the use amount that has reduced the higher ground connection reinforcing material of cost with.
The preferred ground connection reinforcing material of the present invention is the GEM resistance reducing agent.The GEM resistance reducing agent uses at the independent physics resistance reducing agent that uses as a kind of, has that the self-resistance rate is low, effective characteristics of the four seasons.But since its cost higher, require meticulous construction, so be difficult to be extensive use of in practice.The consumption that hinders ground connection reinforcing material in the composition that falls of the present invention is less, and then reduced and fallen the cost of material that hinders composition, construction procedure is simplified significantly, applies it to of the present inventionly to fall resistance and not only can reduce the resistance cost behind the composition, and has further improved resistance reducing effect of the present invention.
The present invention guarantees to fall the resistance composition to the parcel effect of earth electrode for further, guarantees that the GEM resistance reducing agent is not washed away by rainwater or underground water, and preferred above-mentioned falling hindered the electroconductive cement that composition also comprises 0.05～0.2 weight portion.
In a kind of preferred embodiment of the present invention, resistivity of falling the resistance composition of the present invention is 1.0～2.0 Ω m, can effectively reduce the resistivity of soil.
The inventor finds through deep theoretical research and great deal of experimental, when the weight ratio of bentonite, ground connection reinforcing material and electroconductive cement is 95: 5: 0.1, the resistivity of falling the resistance composition is 1.5 Ω m, and this Acceptable life that falls the resistance composition was further extended to more than 30 years.
Can be used for bentonite of the present invention is sodium bentonite.Sodium ions content is more in the sodium bentonite, can continuedly constantly expand, until becoming a kind of gel state and then further having improved stability in contact between ground connection reinforcing material and the soil.
Generally comprise multiple metallic element in bentonite, these metallic elements exist with states such as oxide, inorganic salts, and in an embodiment of the present invention, preferred active component comprises: Cu
2+, Mg
2+, Na
+, K
+Bentonite.Metal ion in copper compound in the bentonite, magnesium compound, sodium compound and the potassium compound and himself adsorbed a large amount of moisture content can be used as conductive materials and provide ion for falling the resistance composition, when having electric current to pass through in the earth, electrolysis can take place and form the galvanic circle in them, thereby further reduces the resistivity of soil.
Above-mentioned falling hinders the auxiliary agent that composition also comprises 10～15 weight portions, and auxiliary agent comprises graphite, charcoal fiber, nano-silver powder.
A kind of above-mentioned technical scheme of falling the application of resistance composition in soil of the present invention also is provided in the typical execution mode of another kind of the present invention.The resistance composition that falls of the present invention is applied in the soil and is used for falling resistance and not only can plays excellent resistance reducing effect, and cost is lower, retentivity is higher, can use the long time limit.
Further specify the books beneficial effect of the invention below with reference to embodiment and Comparative Examples.
The resistance composition falls according to what the proportioning in the table 1 prepared embodiment 1 to 4 and Comparative Examples 1 to 3, wherein, embodiment 1,3 and 4 and Comparative Examples 1 and 2 used bentonites be sodium bentonite, its active component comprises Cu
2+, Mg
2+, Na
+, K
+Embodiment 2 used bentonites are calcium-base bentonite, and its active component comprises Fe
2+, Ca
2+, K+ and Fe
3+, and test respectively falling resistivity and the anti-scouring intensity that resistance made up, test result sees Table 1.
Table 1
By the determination data in the table 1 as can be seen, the earth resistance of embodiment 1 to 4 is lower than Comparative Examples 1 and 2, embodiment 1, embodiment 3 compare with Comparative Examples 3 with embodiment 4,, can satisfy resistance reducing effect the instructions for use of resistance reducing agent fully though being worse than Comparative Examples slightly, and therefore the consumption of the GEM resistance reducing agent of embodiment greatly reduces the cost that falls the resistance composition well below the consumption of the GEM resistance reducing agent of Comparative Examples; The earth resistance that the resistance earth resistance of composition-20 ℃ under is starkly lower than Comparative Examples 1 to 3 falls in embodiment 1 to 4, and then explanation hinders composition with falling of embodiment 1 to 4 and is applied in the low temperature soil and also can realizes resistance reducing effect preferably.
The above is the preferred embodiments of the present invention only, is not limited to the present invention, and for a person skilled in the art, the present invention can have various changes and variation.Within the spirit and principles in the present invention all, any modification of doing, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (9)
1. one kind is fallen the resistance composition, it is characterized in that, the described resistance composition that falls comprises in weight portion:
90～95 parts of bentonites;
5～10 parts of resistivity are the ground connection reinforcing material of 0.1～0.15 Ω m.
2. the resistance composition that falls according to claim 1 is characterized in that, described ground connection reinforcing material is the GEM resistance reducing agent.
3. the resistance composition that falls according to claim 1 and 2 is characterized in that, described falling hindered the electroconductive cement that composition also comprises 0.05～0.2 weight portion.
4. the resistance composition that falls according to claim 3 is characterized in that, described resistivity of falling the resistance composition is 1.0～2.0 Ω m.
5. the resistance composition that falls according to claim 3 is characterized in that, the weight ratio of described bentonite, described ground connection reinforcing material and described electroconductive cement is 95: 5: 0.1.
6. the resistance composition that falls according to claim 1 is characterized in that, described bentonite is sodium bentonite.
7. the resistance composition that falls according to claim 6 is characterized in that, described bentonitic active component comprises: Cu
2+, Mg
2+, Na
+, K
+
8. the resistance composition that falls according to claim 3 is characterized in that, described falling hindered the auxiliary agent that composition also comprises 10～15 weight portions, and described auxiliary agent comprises graphite, charcoal fiber, nano-silver powder.
9. each describedly falls the application of resistance composition in soil in the claim 1 to 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310089587.3A CN103198872B (en) | 2013-03-20 | 2013-03-20 | A kind of fall hinders compositions and the application in soil thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310089587.3A CN103198872B (en) | 2013-03-20 | 2013-03-20 | A kind of fall hinders compositions and the application in soil thereof |
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|---|---|
| CN103198872A true CN103198872A (en) | 2013-07-10 |
| CN103198872B CN103198872B (en) | 2016-08-03 |
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|---|---|---|---|
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104966542A (en) * | 2015-06-11 | 2015-10-07 | 长沙理工大学 | Novel macromolecule resistance-reducing agent and preparation method thereof |
| CN109349277A (en) * | 2018-10-08 | 2019-02-19 | 湖北捷地安电气有限公司 | A kind of environmental protection rush vegetation growth type grounding resistance-reducing material |
| CN115527701A (en) * | 2022-09-20 | 2022-12-27 | 中国人民解放军空军工程大学 | Grounding resistance-reducing material and application thereof |
| CN116639943A (en) * | 2023-06-27 | 2023-08-25 | 西安热工研究院有限公司 | High-conductivity grounding material for pressurized water reactor nuclear generator set and preparation method |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07142136A (en) * | 1993-11-18 | 1995-06-02 | Osaka Gas Co Ltd | Grounding resistance reducing agent and grounding electrode |
| CN1866409A (en) * | 2006-06-13 | 2006-11-22 | 龚循礼 | Long-lasting grounding anti-corrosion resistance reduction agent (modified type) |
| CN101752021A (en) * | 2010-02-11 | 2010-06-23 | 昆明宇恬科技工程有限公司 | Long-effective corrosion-prevention physical resistance-reducing agent |
-
2013
- 2013-03-20 CN CN201310089587.3A patent/CN103198872B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07142136A (en) * | 1993-11-18 | 1995-06-02 | Osaka Gas Co Ltd | Grounding resistance reducing agent and grounding electrode |
| CN1866409A (en) * | 2006-06-13 | 2006-11-22 | 龚循礼 | Long-lasting grounding anti-corrosion resistance reduction agent (modified type) |
| CN101752021A (en) * | 2010-02-11 | 2010-06-23 | 昆明宇恬科技工程有限公司 | Long-effective corrosion-prevention physical resistance-reducing agent |
Non-Patent Citations (1)
| Title |
|---|
| ERICO: "GEM Ground Enhancement Material", 《GEM GROUND ENHANCEMENT MATERIAL》, 31 December 2010 (2010-12-31) * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104966542A (en) * | 2015-06-11 | 2015-10-07 | 长沙理工大学 | Novel macromolecule resistance-reducing agent and preparation method thereof |
| CN109349277A (en) * | 2018-10-08 | 2019-02-19 | 湖北捷地安电气有限公司 | A kind of environmental protection rush vegetation growth type grounding resistance-reducing material |
| CN115527701A (en) * | 2022-09-20 | 2022-12-27 | 中国人民解放军空军工程大学 | Grounding resistance-reducing material and application thereof |
| CN116639943A (en) * | 2023-06-27 | 2023-08-25 | 西安热工研究院有限公司 | High-conductivity grounding material for pressurized water reactor nuclear generator set and preparation method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103198872B (en) | 2016-08-03 |
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