KR19980016630A - Earth resistance reducing material composition and process - Google Patents
Earth resistance reducing material composition and process Download PDFInfo
- Publication number
- KR19980016630A KR19980016630A KR1019960036298A KR19960036298A KR19980016630A KR 19980016630 A KR19980016630 A KR 19980016630A KR 1019960036298 A KR1019960036298 A KR 1019960036298A KR 19960036298 A KR19960036298 A KR 19960036298A KR 19980016630 A KR19980016630 A KR 19980016630A
- Authority
- KR
- South Korea
- Prior art keywords
- weight
- parts
- composition
- fly
- ash
- 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.)
- Ceased
Links
Landscapes
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
본 발명은 각종 전기 시설을 설계할 때 위험을 방지 하기 위하여 반드시 접지 시설을 갖추어야 한다. 이러한 접지 시설은 고전압, 전류가 흐르는 전선이 단락 하거나 낙뇌에 의해 건물 송전탑, 통신탑 등을 통하여 전기가 흐를 경우 사람이나 가축에 치명적인 사고를 발생하게 된다. 이를 방지하기 위하여 피뢰침, 전압 보안기등이 사용되긴 하나 가장 확실하고 가장 안전한 방법은 고전압, 전류가 대지로 유도하여 감쇄하는 방법이 지금까지 사용되어 왔다.The present invention must be equipped with a grounding facility in order to prevent risks when designing various electrical facilities. These grounding facilities cause fatal accidents to humans or livestock when high voltage, current flowing wires are shorted, or electricity flows through building transmission towers or communication towers due to lightning. To prevent this, lightning rods and voltage protectors are used, but the most reliable and safest method has been a method of inducing high voltages and currents to the earth and attenuating them.
우수한 접지 저항 저감재를 제조하기 위하여 주성분인 포틀랜드 시멘트량을 대폭 감량하고 화력발전소 또는 석유 화학공업에서 부산물로 발생되는 FLY-ASH을 적정량을 혼합 하므로 고강도 접지 저항 저감재의 주재료를 얻었다. 특히, FLY-ASH는 입자의 직경이 미세하고 주성분이 CaO, SiO2, Al2O3등으로 구성되어 포틀랜드 시멘트 또는 저급 석고와 비슷한 조성으로 구성되어 수분 흡수성질이 우수하고 시멘트보다 비중이 낮으므로 사용하기 편리하다. 또한 적당한 수분을 첨가하여 양생된 구조물의 7일 강도는 150Kg/㎠ 이상의 고강도를 유지할 수 있으므로 접지 저항 저감재 조성으로 사용하기에 적합하다.In order to manufacture a good earth resistance reducing material, the main material of high strength earth resistance reducing material was obtained by drastically reducing the amount of portland cement as a main component and mixing the appropriate amount of FLY-ASH generated as a by-product from thermal power plant or petrochemical industry. Particularly, FLY-ASH is composed of fine particle diameter and CaO, SiO 2 , Al 2 O 3, etc., which is similar in composition to Portland cement or lower gypsum, so it has excellent water absorption and lower specific gravity than cement. It is convenient to use. In addition, the 7-day strength of the structure cured by adding the appropriate moisture can maintain a high strength of 150Kg / ㎠ or more is suitable for use as a ground resistance reducing material composition.
접지 저하 저감재의 조성에는 탄소섬유 또는 카본블렉, ㅎ흑연, 금속분말을 혼합하게 된다. 여기서 전도성 물질을 혼합할 때 분산을 돕기 위하여 분산제을 1∼3%중량부을 혼합하였고, 탄소섬유, 카본블렉을 0.5∼5중량부, 포트랜드 시멘트을 50∼85중량부, FLY-ASH를 5∼50중량부 그리고 감수제를 0.5∼3중량부를 조성으로 한다. 먼저 탄소섬유, 카본블렉을 단독으로 분산하기 위하여 물성용액을 물에 혼합하여 2시간 이상 분산장치를 이용하여 분산시킨 다음 열풍건조기로 전도성 섬유, 분말의 분산을 완료한다. 또한 FLY-ASH의 재처리을 위하여 열풍으로 건조, 분산 시킨 다음 혼합기에서 각 조성을 30분 이상 혼합한다. 이렇게 제조된 시공체는 7일후 물리적특성과 전기적특성을 조사한바 비저항이 10Ω-cm 이하이고 압축강도가 150∼200Kg/㎠, 흡수율이 5∼10%인 시공체를 얻었다.In the composition of the earth fall reduction material, carbon fiber or carbon black, graphite, and metal powder are mixed. Here, 1 to 3% by weight of a dispersant was mixed to aid dispersion when mixing conductive materials, 0.5 to 5 parts by weight of carbon fiber and carbon black, 50 to 85 parts by weight of Portland cement, and 5 to 50 parts by weight of FLY-ASH. The water reducing agent is 0.5 to 3 parts by weight as a composition. First, in order to disperse carbon fiber and carbon black alone, the physical solution is mixed with water and dispersed using a dispersing device for at least 2 hours, and then the dispersion of the conductive fiber and powder is completed with a hot air dryer. In addition, for reprocessing of FLY-ASH, dried with hot air and dispersed, and then mixed each composition for 30 minutes or more in a mixer. After 7 days, the physical and electrical properties of the prepared body were investigated. Specific resistance was 10 Ω-cm or less, and the compressive strength was 150-200 Kg / cm 2, and the absorbance was 5-10%.
Description
본 발명은 각종 전기 시설을 설계할 때 위험을 방지 하기 위하여 반드시 접지 시설을 갖추어야 한다. 이러한 접지 시설은 고전압, 전류가 흐르는 전선이 단락 하거나 낙뇌에 의해 건물 송전탑, 통신탑 등을 통하여 전기가 흐를 경우 사람이나 가축에 치명적인 사고를 발생하게 된다. 이를 방지하기 위하여 피뢰침, 전압 보안기등이 사용되긴 하나 가장 확실하고 가장 안전한 방법은 고전압, 전류가 대지로 유도하여 감쇄하는 방법이 지금까지 사용되어 왔다. 지금까지 대부분의 접지 설치 방법은 구리봉, 구리판 등을 지표면에 설치하는 것으로 접지 시설을 구성하여 왔다. 그러나 지구의 표면은 위치에 따라 또는 토양의 조성에 따라 대지 저항이 서로 다르므로 접지 시설이 불안한 상태로 구성되어 감전사고 또는 전기장치로 구성된 기기의 고장의 원인으로 종종 발생됐다. 그래서 대지 저항에따라 접지 저항을 낮추기 위하여 접지 저항 저감재를 사용하므로 완벽한 접지 저항을 갖게 되고, 접지 저항 저감재의 조성에 따라 그 특성을 장시간 유지할 수 있다.The present invention must be equipped with a grounding facility in order to prevent risks when designing various electrical installations. These grounding facilities cause fatal accidents to humans or livestock when high voltage, current flowing wires are shorted, or electricity flows through building transmission towers or communication towers due to lightning. To prevent this, lightning rods and voltage protectors are used, but the most reliable and safest method has been a method of inducing high voltages and currents to the earth and attenuating them. Until now, most ground installation methods have been constructed by installing copper bars and copper plates on the ground. However, because the earth's surface has different earth resistances depending on the location or the soil composition, the grounding facility is in an unstable state, which is often caused by an electric shock or a failure of an electric device. Therefore, since the ground resistance reducing material is used to lower the ground resistance according to the earth resistance, it has a perfect ground resistance, and its characteristics can be maintained for a long time according to the composition of the ground resistance reducing material.
우선 본 발명에서는 접지 저항 저감재에 주성분인 포틀랜드 시멘트량을 대폭 감량하고 화력발전소 또는 석유 화학공업에서 부산물로 발생되는 FLY-ASH을 적정량을 혼합 하므로 고강도 접지 저항 저감재의 주재료를 얻었다. 특히, FLY-ASH는 입자의 직경이 미세하고 주성분이 CaO, SiO2, Al2O3등으로 구성되어 포틀랜드 시멘트 3%중 저급석고와 비슷한 조성으로 구성되어 수분 흡수성질이 우수하고 시멘트보다 비중이 낮으므로 사용하기 편리하다. 또한 적당한 수분을 첨가하여 양생된 구조물의 7일 강도는 150Kg/㎠ 이상의 고강도를 유지하고 시일이 지날수록 유리질 성분인 에틸렌자이트 성분이 증가하여 포트랜드 세멘트보다 우수한 압축강도을 나타내므로 접지 저항 저감재 조성으로 사용하기에 적합하다.First, in the present invention, a significant amount of Portland cement, which is a main component, is mixed with a proper amount of FLY-ASH generated as a by-product from a thermal power plant or a petrochemical industry, thereby obtaining a main material of a high strength ground resistance reducing material. Particularly, FLY-ASH is composed of fine particle diameter and CaO, SiO 2 , Al 2 O 3, etc., and is composed of similar composition to low grade gypsum among 3% of Portland cement. As it is low, it is convenient to use. In addition, the 7-day strength of the structure cured by the addition of adequate moisture is maintained at 150Kg / ㎠ or more, and as the seal passes, the ethyleneite component, which is a glassy component, increases, which shows better compressive strength than Portland cement. Suitable for use
접지 저항 저감재 조성을 구하기에서는 우선 토양의 성질을 알아야 한다. 대부분 토양은 무기산화물, 물, 공기의 3요소로 구성되어 있기 때문에 대지 저항이 변화가 심하다. 그러므로 접지 저항 저감재의 조성에는 탄소섬유 또는 카본블렉, 흑연, 금속분말을 혼합하게 된다. 여기서 전도성 물질을 혼합할 때 분산을 돕기 위하여 분산제을 1∼3%중량부을 혼합하였고, 탄소섬유, 카본블렉을 0.5∼5중량부, 포트랜드 시멘트을 50∼85중량부, FLY-ASH를 5∼50중량부 그리고 감수제를 0.5∼3중량부를 조성으로 한다. 먼저 탄소섬유, 카본블렉을 단독으로 분산하기 위하여 물성용액을 물에 혼합하여 2시간 이상 분산장치를 이용하여 분산시킨 다음 열풍건조기로 전도성 섬유, 분말의 분산을 완료한다. 또한 FLY-ASH의 주성분인 석고는 대부분 무수석고 또는 2수석고로 존재하기 때문에 수분흡수량을 증가시키기 위하여 열풍으로 건조 분산 시킨 다음 혼합기에서 각 조성을 30분 이상 혼합한다.In determining the composition of the earth resistance reduction material, the nature of the soil must be known first. Most soils are made up of three elements: inorganic oxides, water, and air, so the resistance of the earth varies greatly. Therefore, carbon fiber or carbon black, graphite, and metal powder are mixed in the composition of the ground resistance reducing material. Here, 1 to 3% by weight of a dispersant was mixed to aid dispersion when mixing conductive materials, 0.5 to 5 parts by weight of carbon fiber and carbon black, 50 to 85 parts by weight of Portland cement, and 5 to 50 parts by weight of FLY-ASH. The water reducing agent is 0.5 to 3 parts by weight as a composition. First, in order to disperse carbon fiber and carbon black alone, the physical solution is mixed with water and dispersed using a dispersing device for at least 2 hours, and then the dispersion of the conductive fiber and powder is completed with a hot air dryer. In addition, since gypsum, which is the main component of FLY-ASH, exists mostly as anhydrous gypsum or dihydrate gypsum, it is dried and dispersed with hot air to increase water absorption and then mixed with each composition for 30 minutes or more.
[실시예 1]Example 1
(공통사항) 각 시료는 수분을 흡수하면 양생력이 낮아지므로 50℃에서 적어도 5기간 이상 건조후 각 시료를 칭량한다.(Common matters) As each sample absorbs moisture, its curing power is lowered. After drying at 50 ° C for at least 5 hours, weigh each sample.
포트랜드 시멘트 50중량부에 카본섬유 3중량부, 분산제 1.5중량부, FLY-ASH 44중량부, 감수제 1.5중량부을 혼합 분산시키고 정6면체의 시공체를 구성하고 24시간 건조후 탈형한다. 성형된 시공체는 25℃, 상대습도 90% 이상에서 7일간 양생후 압축강도와 시공체의 비저항을 측정한다.50 parts by weight of Portland cement, 3 parts by weight of carbon fiber, 1.5 parts by weight of dispersant, 44 parts by weight of FLY-ASH, and 1.5 parts by weight of water reducing agent are mixed and dispersed to form a tetrahedron, and demolded after 24 hours of drying. The molded body is measured for 7 days at 25 ° C and 90% relative humidity, and then measures compressive strength and specific resistance of the body.
[실시예 2]Example 2
포트랜드 시멘트 60중량부에 카본섬유 1.5중량부, 분산제 1.5중량부, FLY-ASH 35중량부, 감수제 1.5중량부을 혼합 분산시키고 정6면체의 시공체를 구성하고 24시간 건조후 탈형한다. 성형된 시공체는 25℃, 상대습도 90% 이상에서 7일간 양생후 압축강도와 시공체의 비저항을 측정한다.To 60 parts by weight of Portland cement, 1.5 parts by weight of carbon fiber, 1.5 parts by weight of dispersant, 35 parts by weight of FLY-ASH, and 1.5 parts by weight of water reducing agent are mixed and dispersed to form a tetrahedron, and dried for 24 hours, followed by demolding. The molded body is measured for 7 days at 25 ° C and 90% relative humidity, and then measures compressive strength and specific resistance of the body.
[실시예 3]Example 3
포트랜드 시멘트 80중량부에 카본섬유 2중량부, 분산제 1중량부, FLY-ASH 16중량부, 감수제 1.5중량부을 혼합 분산시키고 정6면체의 시공체를 구성하고 24시간 건조후 탈형한다. 성형된 시공체는 25℃, 상대습도 90% 이상에서 7일간 양생후 압축강도와 시공체의 비저항을 측정한다.2 parts by weight of carbon fiber, 1 part by weight of dispersant, 16 parts by weight of FLY-ASH, and 1.5 parts by weight of a water reducing agent are mixed and dispersed in 80 parts by weight of Portland Cement. The molded body is measured for 7 days at 25 ° C and 90% relative humidity, and then measures compressive strength and specific resistance of the body.
[비교예 1]Comparative Example 1
포트랜드 시멘트 97중량부에 카본섬유 3중량부을 혼합 분산시키고 정6면체의 시공체를 구성하고 24시간 건조후 탈형한다. 성형된 시공체는 25℃, 상대습도 90% 이상에서 7일간 양생후 압축강도와 시공체의 비저항을 측정한다.3 parts by weight of carbon fibers are mixed and dispersed in 97 parts by weight of Portland cement, and a hexahedron construct is formed and dried for 24 hours and demolded. The molded body is measured for 7 days at 25 ° C and 90% relative humidity, and then measures compressive strength and specific resistance of the body.
위 실시예와 비교예 방법은 폐자재를 재활용하는 효과와 친토양성 물질인 Al2O3, SiO2, CaO 등으로 구성된 FLY-ASH가 사용되므로 환경 친화성 접지 저항 저감재를 만들 수 있다. 특히, 7일 동안 양생된 시공체는 수분 흡수율이 높아 강수량이 많은 계절에 수분의 통과 할 수 있어 전기적 성질이 장시간 유지할 수 있고 또한 수분의 출입이 가능하므로 친토양성 저항저감제로 사용이 가능하다. 이렇게 시공된 시공체의 자세한 물리적특성과 전기적특성을 검토하면 아래와 같다.In the above example and the comparative example method, since the effect of recycling waste materials and FLY-ASH composed of Al 2 O 3 , SiO 2 , CaO, etc., which are lipophilic materials are used, an environmentally friendly earth resistance reduction material may be made. In particular, the construction body cured for 7 days has a high water absorption rate, so that water can pass through in a season with a lot of precipitation, and thus electrical properties can be maintained for a long time, and moisture can be accessed and used as a lipophilic resistance reducing agent. Examining the detailed physical and electrical properties of the construction thus constructed as follows.
결과result
1) 비저항공식 : 비저항=저항×면적/길이1) Non-floor type: Specific resistance = resistance × area / length
2) 시공체의 규격 : 5×5×cm2) Specification of construction body: 5 × 5 × cm
Claims (3)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019960036298A KR19980016630A (en) | 1996-08-29 | 1996-08-29 | Earth resistance reducing material composition and process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019960036298A KR19980016630A (en) | 1996-08-29 | 1996-08-29 | Earth resistance reducing material composition and process |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| KR19980016630A true KR19980016630A (en) | 1998-06-05 |
Family
ID=66322587
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR1019960036298A Ceased KR19980016630A (en) | 1996-08-29 | 1996-08-29 | Earth resistance reducing material composition and process |
Country Status (1)
| Country | Link |
|---|---|
| KR (1) | KR19980016630A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100556289B1 (en) * | 2002-07-16 | 2006-03-03 | (주)두영티앤에스 | Grounding electrode integrated pole and manufacturing method thereof |
| KR100886116B1 (en) * | 2004-06-21 | 2009-02-27 | 가부시키가이샤 산코샤 | Grounding conductor |
-
1996
- 1996-08-29 KR KR1019960036298A patent/KR19980016630A/en not_active Ceased
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100556289B1 (en) * | 2002-07-16 | 2006-03-03 | (주)두영티앤에스 | Grounding electrode integrated pole and manufacturing method thereof |
| KR100886116B1 (en) * | 2004-06-21 | 2009-02-27 | 가부시키가이샤 산코샤 | Grounding conductor |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CA2372024C (en) | Electrically conductive concrete and controlled low-strength materials | |
| EP0425711B1 (en) | An electrically conductive cement composition and an electrically conductive mass prepared from the composition | |
| US7578881B2 (en) | Electrically conductive concrete and controlled low strength materials having spent carbon sorbent | |
| CN1552657A (en) | Composite Conductive Concrete | |
| KR19980016630A (en) | Earth resistance reducing material composition and process | |
| KR100627947B1 (en) | Synthetic electrically conductive materials | |
| CN1995251A (en) | Paint for preventing covering ice for insulator and its preparation method | |
| Mohd Tadza et al. | Investigation on electrically conductive aggregates as grounding compound produced by marconite | |
| KR960004375B1 (en) | Conductive concrete composition | |
| JPH05286748A (en) | Production of hydraulic composition and conductive hardened body | |
| WO2016117770A1 (en) | Composite grounding module formed from graphite, pearlstone and vermiculite | |
| KR20010007852A (en) | Composition reducing earth resistance and molding manufactured therewith | |
| KR20060027960A (en) | Ground resistance reducing material | |
| Pokarier et al. | Leakage current monitoring of composite long rod insulators | |
| KR102866794B1 (en) | Low electromagnetic wave shielding concrete composition and manufacturing method thereof | |
| CN108033700B (en) | High-performance conductive concrete special-purpose admixture and preparation method thereof | |
| Fan et al. | Research on profiles of HVDC post insulator and bushing | |
| KR100623967B1 (en) | Conductive grounding-resistance reducing agent | |
| CN109574601A (en) | A kind of building Graphite concrete and preparation method thereof | |
| KR100444909B1 (en) | Ground resistance decreaser | |
| El-Rayyes | Corrosion of Organic Insulating Materials Used in Electrical Networks | |
| Parihar et al. | Analysis of Leakage Current of 220kV Long Rod Insulators at Different Severity Level of Salt Contamination | |
| Karner et al. | Testing and measurement techniques for the evaluation of organic insulating materials for hv outdoor application | |
| DE102024203479A1 (en) | Use of recovered carbon black (rCB) for conductive cement-based building materials | |
| Fiala et al. | Badan ie efektu Joule’aw materiałach glinokrzemianowych aktywowanych alkaliami z dodatkami modyfikującymi właściwości elektryczne Investigation of the Joule’s effect in electrically enhanced alkali-activated aluminosilicates |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A201 | Request for examination | ||
| PA0109 | Patent application |
Patent event code: PA01091R01D Comment text: Patent Application Patent event date: 19960829 |
|
| PA0201 | Request for examination |
Patent event code: PA02012R01D Patent event date: 19960829 Comment text: Request for Examination of Application |
|
| PG1501 | Laying open of application | ||
| E902 | Notification of reason for refusal | ||
| PE0902 | Notice of grounds for rejection |
Comment text: Notification of reason for refusal Patent event date: 19980901 Patent event code: PE09021S01D |
|
| E601 | Decision to refuse application | ||
| PE0601 | Decision on rejection of patent |
Patent event date: 19981130 Comment text: Decision to Refuse Application Patent event code: PE06012S01D Patent event date: 19980901 Comment text: Notification of reason for refusal Patent event code: PE06011S01I |