• 제목/요약/키워드: 고로슬래그미분말

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고로슬래그 미분말 혼합 도로구조물용 고성능 콘크리트의 확산특성에 대한 실험적 고찰 (Experimental Study on Diffusivity of High Performance Concrete containing GGBF for Road Structures)

  • 한승우;김홍삼;김진철;안태호;안태송
    • 한국콘크리트학회:학술대회논문집
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    • 한국콘크리트학회 2010년도 춘계 학술대회 제22권1호
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    • pp.195-196
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    • 2010
  • 본 연구는 도로공사 교량구조물 적용에 적합한 고성능 콘크리트배합의 도출을 위해 고로슬래그미분말을 30%,45%60%의 비율로 치환하여 각각에 대한 고성능 콘크리트의 전위차 촉진염소이온 확산시험을 180일 까지 실시한 결과를 정리하였다.

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고로슬래그 미분말 대체율에 따른 콘크리트의 공학적 특성에 관한 실험적 연구 (An Experimental Study on the Engineering Properties of Concrete According to the Replacement Ratio of Blast-Furnace Slag)

  • 송민섭;장재봉;김갑수;윤종기;김재환;김무한
    • 한국건축시공학회:학술대회논문집
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    • 한국건축시공학회 2003년도 학술.기술논문 발표회
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    • pp.5-8
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    • 2003
  • As a part of efforts to obtain high quality and economical efficiency of concrete, blast-furnace slag has been utilized by means of cement replacement. Therefore superior performance can be ensured, environmental pollution can be prevented and economical advantage can be obtained with utilization by cement replacement. But the studies on the blast-furnace slag are not systematic and reasonable. So, it was planed that basic data in regard to technique of manufacturing and economic improvement of concrete is showed with experimental comparison and investigation of engineering properties of concrete utilizing blast-furnace, industry by-product, as cement replacement in this study.

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고로슬래그 미분말 대체율에 따른 콘크리트의 공학적 특성에 관한 실험적 연구 (An Experimental Study on the Engineering Properties of Concrete According to the Replacement Ratio of Blast-Furnace Slag)

  • 송민섭;장재봉;김갑수;윤종기;김재환;김무한
    • 한국건축시공학회:학술대회논문집
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    • 한국건축시공학회 2003년도 학술.기술논문발표회
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    • pp.5-8
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    • 2003
  • As a part of efforts to obtain high quality and economical of efficiency of concrete, blast-furnace slag has been utilized by means of cement replacement. Therefore superior performance can be ensured, environmental pollution can be prevented and economical advantage can be obtained with utilization by cement replacement. But the studies on the blast-furnace slag are not systematic and reasonable. So, it was planed that basic data in regard to technique of manufacturing and economic improvement of concrete is showed with experimental comparison and investigation of engineering properties of concrete utilizing blast-furnace, industry by-product, as cement replacement in this study.

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고로슬래그미분말의 입도와 양생방법에 따른 모르터 물성에 관한 연구 (A Study on the Properties of Mortar With Particle Size of Blast Furnace Slag Powder and Curing Methods)

  • 김승진;박유진;조재우;김영근;김대영
    • 한국콘크리트학회:학술대회논문집
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    • 한국콘크리트학회 1999년도 학회창립 10주년 기념 1999년도 가을 학술발표회 논문집
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    • pp.191-194
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    • 1999
  • Recently in Korea, may workers have reported the effects of the granulated blast furnace slag[BFS] of high fineness on the strength development of slag cement. We have studied the effect of slag fineness on the strength development of mortar with curing conditions, in order to get the basic data of high strength concrete using BFS. In this paper, we discussed the effects of slag fineness and porosity of mortar and the reaction of slag in hardened slag cement.

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고로슬래그미분말을 혼입한 수중불분리콘크리트의 특성에 관한 연구 (A Study on the Characteristics of Antiwashout Underwater Concrete Using Finely Ground Granulated Furnace Blast Slag)

  • 이상명;최홍윤;이환우;김명식
    • 한국콘크리트학회:학술대회논문집
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    • 한국콘크리트학회 1999년도 학회창립 10주년 기념 1999년도 가을 학술발표회 논문집
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    • pp.95-98
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    • 1999
  • Recently, the use of the underwater concrete constructions with the antiwashout underwater concrete is increasing. In this study, we investigate the properties of pH, suspended solids, slump flow, box test, air contents of fresh antiwashout underwater concrete and the Unit weight, compressive strength of hardened antiwashout underwater concrete which Ground Granulated Blast Furnace Slag contents 0%, 10%, 20%, 30%, 50%, 60% at 7days and 28days age which is produced and cured in the water and sea water. As a result, Ground Granulated Blast Furnace Slag contents 30% was excellent.

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고로슬래그미분말을 활용한 수중불분리성콘크리트 (Properties of Antiwashout Underwater Concrete Using the GGBF Slag)

  • 문한영;김성수;이병덕;이재준
    • 한국콘크리트학회:학술대회논문집
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    • 한국콘크리트학회 1998년도 가을 학술발표회 논문집(I)
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    • pp.83-86
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    • 1998
  • Recently, underwater concrete constructions are increasing. Therefore it is considered important to control the quality of underwater concrete. In this paper, we have an intention of evaluating fundamental properties of underwater concrete using the Ground Granulated Blast Furnace Slag (GGBF Slag). Thus, it has been investigated that the slump flow of the concrete, pH value and suspended solids in solution, compressive strength on both of specimens made above and below water. Also the percentage of GGBF Slag was found to alter the filling-up in underwater concrete.

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고로슬래그미분말 혼합 콘크리트의 염소이온 확산특성 (Characteristic of Chloride Ion Diffusion in Concrete Containing GGBF)

  • 문한영;김홍삼;김진철;최두선
    • 한국콘크리트학회:학술대회논문집
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    • 한국콘크리트학회 2001년도 가을 학술발표회 논문집
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    • pp.793-796
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    • 2001
  • Physical properties of concrete, Such as, compressive strength, permeable pore and penetration depth of chloride ion were investigated. And to investigate the effect of containing GGBF in concrete, the diffusion coefficient of chloride was measured through an electro- migration test. The diffusion coefficient of chloride was decreased with increase of replacement ratios of GGBF when compared to OPC. Relation coefficients between physical properties of concrete and diffusion coefficient of chloride were more than 0.9.

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초속경시멘트를 사용한 시멘트콘크리트포장의 내구특성 (Durability of Cement Concrete Pavement using Regulated Set Cement)

  • 이승태;김성수;박광필
    • 한국콘크리트학회:학술대회논문집
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    • 한국콘크리트학회 2009년도 춘계 학술대회 제21권1호
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    • pp.285-286
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    • 2009
  • 고로슬래그미분말을 사용한 도로포장용 초속정시멘트 콘크리트의 염소이온 침투저항성을 실험적으로 고찰하였으며, 본 연구에서 얻은 데이터를 활용하여 고성능 시멘트콘크리트포장의 내구성 확보를 위한 재료개발을 목표로 한다.

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고르슬래그미분말을 다량 혼입한 콘크리트의 염분침투저항성 (Chloride Penetration Resistance of Concrete Mixed with High Volume Blast Furnace Slag)

  • 박기철;김동훈;박신;임남기
    • 한국건축시공학회:학술대회논문집
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    • 한국건축시공학회 2014년도 추계 학술논문 발표대회
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    • pp.40-41
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    • 2014
  • As a result of strength test on BFS concrete, those mixed with 30% and 50% of BFS8000, respectively, showed higher or equivalent strength compare to OPC. As a result of test of chloride penetration on BFS, diffusion coefficients of concrete mixed with 30% FA4000 and FA5000, respectively, showed to restrain average 6.5% of diffusion coefficient compared to OPC. And in case of BFS concrete, those mixed with BFS6000 and BFS8000, restrained diffusion of chloride ions 253% and 336%, respectively, compared to OPC. Therefore, Mixing 50% of BFS was most efficient in order to maximize restraint of chloride penetration according to metathesis of large amount. In this study, when mixing BFS to concrete for long-run durability and restraint against chloride penetration, for BFS, as fineness was higher and mixing it to concrete with less or equivalent 50% of replacement rate, there were results of higher strength compared to OPC and more efficient restraint of chloride ions.

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고로슬래그미분말을 혼입한 고유동콘크리트에서 골재조합이 콘크리트 유동성상에 미치는 영향에 관한 실험 연구 (The Effect of Combined Aggregates on Fluidity of the High Fluid Concrete Containing GGBFS)

  • 김재훈;윤상천;지남용
    • 한국건축시공학회지
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    • 제3권4호
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    • pp.79-86
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    • 2003
  • The purpose of study is to offer base data for high fluid concrete mix property, as grasp effect of aggregate to reach much more effect for producing high fluid concrete. For this study, there are three types of combined aggregates, river sand + river aggregate(type A), river sand + crusted aggregate(type B), washed sea sand + crushed aggregate(type C) and take a factor, water-contents, water-binder ratio and S/a. And so, we had following conclusion, resulting application-ability of high fluid mortar by K-slump tester to use a handy consistency measuring instrument. And so, we had following conclusion, resulting application-ability of high fluid concrete by K-slump tester to use a handy consistency measuring instrument. 1) In cafe of regular water binder ratio, high fluid concrete suffered much effect of combined aggregates and water binder ratio. Range of water binder ratio by combined aggregates is w/b 0.4 downward(type A and B), w/b 0.35 downward(type C). 2) Water contents to need for producing high fluid concrete is minimum 170kg/$\textrm{m}^3$ without regard to combined aggregates. 3) The effect of S/a on high fluid concrete by combined aggregates is approximately S/a 50% (type A and B), s/a 50-55% (type C). 4) Consistency measuring of high fluid concrete by K-slump tester is possible and first indication value, high fluid concrete can be produced, is 6~10.5cm.