• 제목/요약/키워드: cement substitute material

검색결과 61건 처리시간 0.023초

제올라이트 시멘트 모르타르의 재료적 특성에 관한 기초 연구 (A Fundamental study on the Characteristics of Zeolite Cement Mortar)

  • 조병완;강석원;박승국;최지선
    • 콘크리트학회논문집
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    • 제23권2호
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    • pp.203-209
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    • 2011
  • 시멘트 산업은 에너지 다소비형이며 석회석을 원료로 하고 있어 지구 온난화의 주범인 CO를 배출하여, 환경문제로 인해 가까운 시기에 큰 어려움을 겪을 것으로 예상되고 있다. 오늘날 첨단산업의 발전과 지구환경 문제의 심각성에 대한 인식이 증가하여 시멘트 산업에서도 다각화 측면에서 다양한 종류의 기술 등이 활성화되고 있는 시점이다. 이 연구에서는 최근에 새로이 검토되고 있는 시멘트 대체 재료로서 천연 제올라이트를 주원료로 사용한 제올라이트 시멘트 모르타르에 관한 재료적 특성을 분석하는데 목적이 있으며 그 방법으로 물($H_2O$)대신 알칼리 활성제(NaOH)를 사용하여 알칼리 경화반응을 이용한 제올라이트 모르타르를 제조하여, 강도 특성 및 적정 배합비를 구하였다. 그 결과 알칼리 활성제의 양과 경화 온도에 따른 천연 제올라이트 시멘트 모르타르의 7일 압축강도가 42 MPa로 측정되는 등 기존 시멘트보다 뛰어난 성능을 나타내는 것으로 판단되어지며, 기존 건설용 재료를 대체할 가능성이 충분히 있다고 사료된다.

3성분계 무기결합재의 양생방법에 따른 강도특성 (Strength Characteristic according to the Curing Method of the Ternary System Inorganic Binder)

  • 이진우;이윤성;이상수;송하영
    • 한국건축시공학회:학술대회논문집
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    • 한국건축시공학회 2013년도 춘계 학술논문 발표대회
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    • pp.33-34
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    • 2013
  • Recently, as the policy of state that it is the low carbon green growth is promoted, the effort for reducing the CO2 gas generation ejected from the construction industry in the cement production is continued. That is, the method using the mineral admixtures including the silica fume and red mud, silica fume and etc. it is the industrial byproduct with the method solving the exhaustion problem of the environmental contamination settlement and natural resources, the great quantity as the cement substitute material is examined. Accordingly, in this research, the strength characteristic of the curing body differentiating the curing method of the ternary system inorganic binder using the blast furnace slag and red mud, silica fume and etc. as the cement substitute material tried to be examined.

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CBS Dust를 시멘트 대체재로 활용하는 모르타르의 경화 특성 (Properties of Hardened Mortar Using Chlorine By-pass System Dust a Cement Substitution of Cement)

  • 이영준;이혁주;현승용;김민상;이동주;한민철
    • 한국건축시공학회:학술대회논문집
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    • 한국건축시공학회 2018년도 추계 학술논문 발표대회
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    • pp.167-168
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    • 2018
  • In this study, use to CBS Dust as substitution of cement was explored. And the CBS Dust was intended to be used as a cement substitute, and the possibility as a potential water hardness stimulant for BS was investigated. Test results indicated that it can be used in with BS for a potential hydroponic stimulant.

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섬유의 종류에 따른 폐유리와 무기결합재 인조석재의 역학적 특성 (Mechanical Properties of the artificial Stone According to the Ternary System Inorganic Composite and Waste Glass and Fiber type)

  • 유용진;김헌태;이상수;송하영
    • 한국건축시공학회:학술대회논문집
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    • 한국건축시공학회 2013년도 춘계 학술논문 발표대회
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    • pp.321-322
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    • 2013
  • Recently, the exhaustion of resource and environmental damage is serious due to the global warming because of the CO2 exhaust and each type the natural aggregate picking described below. meanwhile, The rest is the actual condition gone to the dumping ground that there is nearly no use which the waste glass can recycle and it is recycled. This research applied the waste glass as the cement substitute material the inorganic binder and coares aggregate substitute material. It utilizes the substitute material of the cement according to it and natural aggregate and tries to develop the environment-friendly artificial stone. The inorganic binder used the blast furnace slag, red mud, and fly ash. The straight type steel fiber, PVA fiber, PA fiber, and cellulosic fiber were used with a kind of fiber. As to the experimental item according to it, the compressive strength is the flexural strength and compressive strength.

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Metakaolin 혼합 고강도콘크리트의 내구특성 평가 (Estimation on the Durability of High-Strength Concrete using Metakaolin)

  • 문한영;염준환;문수동;이상호
    • 한국콘크리트학회:학술대회논문집
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    • 한국콘크리트학회 2004년도 추계 학술발표회 제16권2호
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    • pp.217-220
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    • 2004
  • Metakaolin is a cementitious material for producing high-strength concrete. This material is now used as substitute for silica-fume. In this paper, we did the durability test such as chloride ion diffusion, chemical attack. repeated freezing and thawing, carbonation. In the chloride ion diffusion test, according to the increase of substitute of metakaolin & silica-fume for binder, the diffusion coefficient is more reduced. And in the chemical attack test, according to the increase of substitute, the resistance is more excellent. In the other durability test, the concrete using metakaolin is also compared with those of the portland cement concrete and silica fume concrete. According to these tests, we recognized that metakaolin is able to be used as a substitute for silica-fume.

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3성분계 무기결합재의 80℃ 수중양생 시간변화에 따른 강도특성 (Strength Characteristic according to the 80℃ Water Curing Time Variation of the Ternary System Inorganic Binder)

  • 이진우;이상수;송하영
    • 한국건축시공학회:학술대회논문집
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    • 한국건축시공학회 2014년도 춘계 학술논문 발표대회
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    • pp.100-101
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    • 2014
  • The global warming because of the CO2 emission and solution about this emerge as the international enviroment problem. Particularly, it is the absolutely it is needed for reducing the CO2 in the cement industry and harmful material actual condition. And the construction of home and abroad and material manufacturers tries for the technology development for the carbon dioxide and harmful material reduction which the portland cement in manufacture is usually emitted along with the increase of concerns about the environment-friendly concrete and panel. Therefore, in this research, the compressive strength of the inorganic binder and flexural strength tries to be measured in order to draw the inappropriate high temperature cure time of the ternary system inorganic binder using the blast furnace slag, red mud, silica fumewhich is the industrial byproduct with the cement substitute material, and etc.

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폐콘크리트 미분말을 시멘트 대체제로 활용한 콘크리트의 압축강도 특성 (Compressive strength properties of concrete using Waste Concrete Powder as a cement substitute)

  • 김영규;정의인;김봉주
    • 한국건축시공학회:학술대회논문집
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    • 한국건축시공학회 2015년도 추계 학술논문 발표대회
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    • pp.128-129
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    • 2015
  • Recently, a number of problems due to the CO2 emissions are occurred. Therefore, it is a movement to restrict this activity. The research is being carried out steadily for recycling waste concrete from the cement paste based fine powder, which accounts for over 60% of construction waste as a recycled cement. In this study, the conclusion was obtained as a result of the research conducted, and then, replacing the main material of cement concrete to solve the above problem by reducing the amount of cement used Waste Concrete Powder. The more concrete results page replacement ratio of fine powder increases, the flow value of the concrete is lowered, the strength was remarkably reduced when the page Concrete Powder.

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친환경 SCW공법용 지반고화재 경화체의 내구특성 (Durable Characteristic of Ground Solidification Material's Body of Hardening used Eco-friendly SCW Method)

  • 조정규;형원길
    • 한국건축시공학회:학술대회논문집
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    • 한국건축시공학회 2017년도 춘계 학술논문 발표대회
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    • pp.118-119
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    • 2017
  • In the S.C.W (soil cement wall) grouting solution, Cement grout ratio of 1 part Portland cement and 1part water is being used. However, Co2 and harmful heavy metals such as cr6+ are discharged in the process, causing a serious environmental issue. The purpose of the present study is therefore to substitute cement grout to inorganic binder and identify durability properties of ground solidification materials.

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고로슬래그 미분말을 혼입한 기포콘크리트의 물리적 특성 (Physical Properties of Foamed Concrete using Blast-Furnace Slag)

  • 조은석;임정준;송하영;이상수
    • 한국건축시공학회:학술대회논문집
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    • 한국건축시공학회 2019년도 추계 학술논문 발표대회
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    • pp.164-165
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    • 2019
  • Light-weight foamed concrete using cement as a raw material consumes a lot of energy and generates $CO_2$ because of the high temperature firing process in the manufacturing process of cement. This study was carried out to evaluate the use of blast furnace slag through the properties analysis by substituting a certain amount of blast furnace slag as an industrial by-product as a substitute for cement. The experimental results showed similar characteristics to those of using only cement when the blast furnace slag fine powder was used in an appropriate amount. Therefore, if a certain amount of cement is replaced with blast furnace slag powder, it can maintain similar quality, reduce natural resources and energy consumption, and reduce carbon dioxide emissions.

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석회석 혼합재의 화학특성이 시멘트 모르타르에 미치는 영향 (The effect of limestone chemical porperties and substitution amount on mechanical properties of cement mortar)

  • 서동균
    • 한국건축시공학회:학술대회논문집
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    • 한국건축시공학회 2022년도 가을 학술논문 발표대회
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    • pp.163-164
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    • 2022
  • Using the limestone powder as material that can substitute the clinker, it seems to get positive effect as filler and enhance workability of cement but the substitution amount and chemical properties of it can affect mechanical properties of cement. Thus, in this study, the effect limestone powder that has other properties on cement is evaluated. As a result, the workability enhancing effect was confirmed but deterioration of compressive strength was also checked. Later, with the view of workability, the experiment that the possibility of strength compensation by decreasing unit water weight of limestone powder cement is planned when the limestone powder is used.

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