• 한국콘크리트학회:학술대회논문집
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• 한국콘크리트학회 2008년도 춘계 학술발표회 제20권1호
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• pp.881-884
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• 2008

현재 국내에서 많은 양의 도자기 폐기물이 발생하고 있으며, 이들 폐기물은 경제적 이득과 환경보전의 차원에서 재활용하는 방안이 모색되어져야 한다. 따라서, 본 연구에서는 도자기 폐기물을 시멘트 혼합재로 이용하여 폐도자기의 재활용성을 검증하고자 하였다. 실험 결과 시멘트 혼합재로 사용된 폐도자기분말이 5%, 7%까지 PHC파일의 압축강도에 영향을 주었으며, 폐도자기분말을 시멘트 혼합재로 사용하여 PHC파일의 강도를 개선시킬 수 있었다.

• 한국건축시공학회지
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• 제4권4호
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• pp.87-94
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• 2004

As the bentonite is main material to prevent from collapse of drilling hole at underground excavation works, it is increased using quantity on construction industry day by day. But, the discarded bentonite that is over using at underground excavation works is caused various enviromental trouble as soil and water pollution est. Therefore, this study aims to propose a foundamental report for pozzolan reaction of discarded Bentonite powder by heat-treatment and cooling as concrete mineral admixture. To find out pozzolan reaction ability of discarded Bentonite powder by indirect cooling & cooling using of water after heat-treatment, the experiments are excuted flow test & compressive strength on age of mortar using discarded Bentonite powder. As a result of this study, discarded Bentonite powder can be utilized as concrete mineral admixture by heat-treatment and especially, pozzolan reaction ability of discarded Bentonite powder is superior to the situation of 600℃. 60min ＆amp; cooling using of water.

• 한국건축시공학회:학술대회논문집
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• 한국건축시공학회 2003년도 학술.기술논문발표회
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• pp.23.2-29
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• 2003

As the bentonite is main material to prevent from collapse of drilling hole at underground excavation works, the quantity of bentonite is increasingly used on construction industry day by day. But, the discarded bentonite that is excessively used at underground excavation works causes various environmental trouble such as soil and water pollution etc. Therefore, this study aims to propose a foundamental report about pozzolan reaction of discarded Bentonite powder by heat-treatment and cooling as concrete mineral admixture. To find out the strength-development properties of mortar with discarded Bentonite powder by indirect cooling & cooling using of water after heat-treatment, the experiments such as flow test, and compressive strength test on curing age of mortar are excuted. As a result of this study, discarded Bentonite powder can be utilized as concrete mineral admixture by heat-treatment and especially, the strength-development properties of mortar mixing with discarded Bentonite powder is superior to the situation of $600^{\circ}C$.60min-cooling using of water.

• 한국재난정보학회 논문집
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• 제11권3호
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• pp.329-336
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• 2015

혼화재료로 사용한 규조토 분말이 모르타르의 강도에 미치는 영향을 검토하기 위하여 시판되고 있는 건조상태의 비소성제품과 소성제품 각 1종류 및 융제소성제품 2종류 등 모두 4종류의 규조토 분말을 사용한 모르타르의 물성실험을 실시하였다. 규조토 분말을 시멘트 질량으로 10% 범위 내에서 대체 사용하고 물-결합재비를 동일하게 한 모르타르 실험결과로서, 소성제품을 사용한 경우는 그 사용량의 증가에 따라 재령 7일, 28일 및 56일의 전체 시험재령에서 압축강도 및 휨강도가 증가하는 경향을 나타냈다. 그러나 비소성제품은 모르타르의 유동성을 저하시켜 단위수량을 크게 증가시키는 문제점이 있었으며, 융제소성제품은 모르타르의 강도개선효과가 나타나지 않았다.

• 한국건축시공학회지
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• 제2권3호
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• pp.139-146
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• 2002

As the bentonite is main material to prevent from collapse of drilling hole at underground excavation works, it is increased using quantity on construction industry day by day. But, the discarded bentonite that is over using at underground excavation works is caused various environmental trouble as soil and water pollution est. This study aims to propose a foundamental report for pozzolan reaction of discarded Bentonite powder by heat-treatment and cooling as concrete mineral admixture. To find out pozzolan reaction ability of discarded Bentonite powder by indirect cooling & cooling using of water after heat-treatment, the experiments are excuted Phenolphtalein test, setting test, pH test and the analysis by X-ray diffractor. As a result of this study, discarded Bentonite powder can be utilized as concrete mineral admixture by heat-treatment and especially, pozzolan reaction ability of discarded Bentonite powder is superior to the situation of 50$0^{\circ}C$~$700^{\circ}C$, 60min.

• 한국건축시공학회:학술대회논문집
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• 한국건축시공학회 2015년도 추계 학술논문 발표대회
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• pp.103-104
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• 2015

This study is an experiment about what affects the compressive strength by using a reducing agent (PNS based admixtures) to play cement using the cement paste based Waste Concrete Powder of waste concrete, which accounts for more than 60% of construction waste around the latest domestic and international It was. Securing the replacement of cement with Waste Concrete Powder and, by varying the admixture was to compensate for the low absorption of liquidity and obtain a fine powder. And the experiment was conducted with a constant water cement ratio and aggregate usage for the purpose of lowering the water cement ratio promoting strength development. When substituted with the experimental results of 0.3% based on 3 ~ 28 days as strength 36Mpa exhibited the highest strength.

• 한국콘크리트학회:학술대회논문집
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• 한국콘크리트학회 2006년도 춘계 학술발표회 논문집(II)
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• pp.341-344
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• 2006

The waste glasses among plenty of wastes put out lately is limited in recycling and reusing, and the phenomenon hasn't been improved quite much. And besides, the recycling rate shows the 70.1%, relatively low. These waste glasses is currently used for road pavement materials, interior and exterior decorating materials in architecture, road painting meterials, auxiliary lagging materials for heat-retaining, coldness-retaining and soundproofing, and glass bottles. 30% of waste glasses powder is, however, not reused pratically. Therefore, in this research, we operated some tests including flow of mortar mixed with waste glasses powder, setting time, rheology and compressive strength to utilize waste glasses powder put out in the precess of recycling for admixture for repair mortar. As a result, we've found out that we can utilize waste glasses powder for admixture for repair mortar.

• 한국콘크리트학회:학술대회논문집
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• 한국콘크리트학회 2006년도 추계 학술발표회 논문집
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• pp.889-892
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• 2006

In this study, we compared and analysed the early strength properties of mortar according to the kinds and replacement ratio of mineral admixture to select the kinds and replacement ratio of mineral admixture of high early strength concrete. For this purpose, mortar mixtures according to the kinds(FA, MK, ZR, BFS, DM) and replacement ratio(0, 2, 4% by volume of sand) of mineral admixture were selected. From our test data, early-age compressive strength decreased in accordance with the increase of replacement ratio of fly-ash(FA) & blast furnace slag powder(BSF) and, in case of addintion admixture, early-age compressive strength of with containing ZR & BFS appeared higher compared with containing other mineral admixture.

• 한국건설순환자원학회논문집
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• 제6권2호
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• pp.103-111
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• 2011

본 연구에서는 현재 시멘트 콘크리트 혼합재로서 널리 사용되고 있는 고로수쇄 슬래그와 애쉬의 페이스트 유동특성을 파악하였다. 그 방법으로 혼합재 단독을 사용한 페이스트의 유동특성을 파악하여, 아래와 같은 결론을 얻을 수 있었다. 혼합재 단독의 페이스트 유동특성을 시험하기 위하여, 3종류의 분쇄기를 사용하여 3가지 입도로 분쇄된 분말을 제조하였다. 이 분말을 Rosin-Rammler 분포식을 사용하여 얻은 계수 n 값과 De 값을 유동특성과 비교 분석한 결과에서, 일반적으로 같은 입경 크기 일 때 Ash 분말이 Slag 분말보다 소성점도 및 항복응력이 높았으며, 또한 동일 n 값에서 Ash 분말이 Slag 분말 보다 비교적 높은 소성점도와 항복응력을 나타내었으나, 입도분포 폭의 변화에는 Slag 분말이 Ash 분말 보다 민감한 유동특성의 변화 경향을 나타내었다.

• 한국건설순환자원학회논문집
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• 제4권2호
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• pp.118-124
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• 2016

본 연구는 단열성능 향상 재료의 타입별 단열콘크리트의 레올로지 특성을 분석하여 최적 유동설계 및 펌핑해석을 위한 기초자료로 활용하고자 하였다. 그 결과 경량골재 혼입시 항복응력이 큰 폭으로 감소한 것으로 나타났으며, 2 type의 경우 마이크로기포제 (MFA) + 규조토 미분말(DM)의 조합이 가장 이상적인 유동특성을 나타내었다. 또한 3 type의 경우 마이크로기포제(MFA) + 규조토 미분말(DM) + 경량골재(L)의 조합이 가장 우수한 유동특성을 나타내었다.