• 한국건축시공학회지
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• 제18권6호
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• pp.551-558
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• 2018

본 연구에서는 페로니켈슬래그 미분말의 시멘트 대체재로서의 가능성을 평가하기 위하여 페로니켈슬래그 미분말 사용 모르타르의 압축강도 및 건조수축특성을 비교 분석하였다. 연구결과 페로니켈슬래그 미분말을 사용한 배합의 경우 동일한 양의 고로슬래그 미분말 및 플라이애시를 사용한 배합에 비해 미소수화열량이 낮게 나타났으며 모르타르 플로우는 상대적으로 다소 높은 것으로 나타났다. 또한 페로니켈슬래그 미분말을 사용한 모르타르의 압축강도의 경우 초기 강도발현은 고로슬래그 미분말 및 플라이애시와 유사하게 나타났으나 재령 28일에서는 상대적으로 낮은 압축강도를 발현하였다. 건조수축의 경우 페로니켈슬래그 미분말을 사용한 배합에서 고로슬래그 미분말을 사용한 배합에 비해 낮은 건조수축값을 나타내었으며 플라이애시를 혼입한 배합의 건조수축과 유사하게 나타났다.

• 한국콘크리트학회:학술대회논문집
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• 한국콘크리트학회 2003년도 가을 학술발표회 논문집
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• pp.82-85
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• 2003

This study is to investigate durability in concrete containing slag powder and limestone power. The variables are the substitution ratio of slag powder and limestone powder. In order to study the effect of slag powder and limestone powder, all mixtures were prepared at a fixed water/cement ratio, slump, and entrained air quantity. When concrete containing slag powder is mixing rate 40%, durability appeared the highest in general. When concrete containing limestone powder is mixing rate 10% in all experiments, the most suitable result appeared.

• 한국건축시공학회:학술대회논문집
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• 한국건축시공학회 2019년도 춘계 학술논문 발표대회
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• pp.205-206
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• 2019

This study investigated the fluidity and compressive strength properties of blast furnace slag based non-cement paste containing ferronickel slag powder to evaluate the possibility of use in for cement replacement materials. As a result, the fluidity of non-cement paste showed a higher flow as the mixing ratio of ferronickel slag powder increased. The compressive strengths similar to those of the non-cement paste using only blast furnace slag powder were obtained when 5 and 10% of ferronickel slag powder were used.

• 한국콘크리트학회:학술대회논문집
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• 한국콘크리트학회 2000년도 가을 학술발표회 논문집(II)
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• pp.951-956
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• 2000

Blast furnace slag powder(BFS) is potential hydration material, and that usage is increased the construction. But, the amount of BFS is important factor with the properties of concrete. The determinational method of slag powder experiments by salicylic acid-methyl alcohol solution method. From these results we can determine the amount of slag powder with blaine 4, 000 and 6, 000 in fresh concrete.

• 한국주조공학회지
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• 제23권5호
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• pp.235-243
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• 2003

The collapsibility of sodium silicate-bonded sands mixed with the L.D converter slag powder to form a hardener were investigated. Five to six percent sodium silicate on the basis of silica sand and 30-40% L.D converter slag powder on the basis of sodium silicate, were mixed and the compressive strength, surface stability index(SSI), bench time, retained strength of the standard sand specimens were measured. The properties were similar to those of general inorganic bonded self-setting molds. The compressive strength and surface stability index were increased and the retained strength and bench time were decreased with increased amount of the L.D converter slag powder. The retained strength of sodium silicate-bonded self-setting molds with the L.D converter slag powder were decreased than $CO_2$ sand molds. The collapsibility of sodium silicate-bonded self-setting molds with the L.D converter slag powder were superior in comparison with $CO_2$ sand molds. The L.D converter slag powder could be used as hardener and collapse agent for the sodium silicate-bonded self-setting molds.

• 한국콘크리트학회:학술대회논문집
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• 한국콘크리트학회 2002년도 가을 학술발표회 논문집
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• pp.75-80
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• 2002

This study is to investigate the characteristic on the resistance of chloride infiltration concrete containing limestone powder The variables are the substitution ratio of slag powder and limestone powder. In order to study the effect slag powder and limestone powder, all mixtures were prepared at a fixed water/cement ratio, slump, and entrained air quantity. As results show that the strength and the resistance of chloride infiltration in concrete substitution 10%, 20% limestone powder, and 30%, 40% slag powder are positive.

• 한국건축시공학회:학술대회논문집
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• 한국건축시공학회 2023년도 가을학술발표대회논문집
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• pp.33-34
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• 2023

Currently, research on construction materials using industrial by-products is being conducted in the Inhan construction industry due to CO₂ emissions during the cement production process and a shortage of aggregates. Among these, research has been conducted to use steel furnace slag as an aggregate by reducing the reactivity of free-CaO, which has the characteristic of expanding through open storage, aging, and rapid cooling. However, research on the use of powder as a cement admixture or substitute is insufficient. Therefore, this study aims to analyze the properties of fresh mortar using steel furnace slag powder. The mixing ratio of steel furnace slag powder was divided into three levels: 0, 20, and 40 (%), and the test items were flow and unit weight. The experimental results showed that as the mixing ratio of steel furnace slag powder increased, flow and unit weight tended to increase. Therefore, it is expected to have a positive effect on improving workability or strength as a cement admixture.

• 한국건축시공학회:학술대회논문집
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• 한국건축시공학회 2013년도 춘계 학술논문 발표대회
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• pp.37-38
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• 2013

The fine powder obtained from the manufacturing process of recycled coarse aggregate contains unhydareted cement particles on their surface. It is believed that the alkalinity of the powder (11.0-12.5) is enough to active the slag-based composites. In this paper, the obtained powder was sieved and divided into two sizes, i.e., 0.08 mm and 0.3 mm, and added to the slag-based mortar. Results showed that the fine powder had an effect on the slump and the compressive strength of slag-based composites. With the different pH values of the powder, it could be seen that the distance between the two level powders. And found the peak 28 days compressive strength as the replacement ratio of the recycled aggregate powder changed. The findings from this study provide an indication that with achieved compressive strength, the fine powder can be used in a light weight concrete.

• 한국콘크리트학회:학술대회논문집
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• 한국콘크리트학회 1999년도 학회창립 10주년 기념 1999년도 가을 학술발표회 논문집
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• pp.85-88
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• 1999

We tested the limestone powder as a filler powder for the effective use of slag cement. Hydration process were investigated by measuring the thermal differential analysis(DTA), compressive strength, XRD patterns, calorimeter of slag cement-limestone powder paste prepared by mixing limestone powder-slag cement. The results obtained in this study, there were no significant difference between the cases of adding up to 5% limestone powder, but the reaction time was accelerated. Also the compressive strength was increased for adding up to 5% limestone powder. The min hydrated paste products were Ca(OH)2 and calcium silicate hydrates. In the case of mixed limestone powder peak appear tricalcium carboaluminate hydrate in the sample of 7 days hydration.

• 한국농공학회논문집
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• 제50권5호
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• pp.19-27
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• 2008

This study was performed to evaluate the compressive strength and acid-resistant of polymer concrete using redispersible polymer powder(RPP) and blast furnace slag powder(BSP). Material used were ordinary portlant cement, recycled coarse aggregate, natural fine aggregate, redispersible polymer powder and blast furnace slag powder. The main experimental variables were the substitution ratio of redispersible polymer powder and blast furnace slag powder, when the substitution ratios of RPP were 0, 1, 2, 3, 4, 5 and 6%, and those of BSP were 10%. The compressive strength and acid-resistant of polymer concrete using RPP and BSP were compared with those of ordinary concrete(Basis). When the substitution ratio of RPP was 1%, at age of 28 days, the compressive strength were more higher than those of Basis by 24%, and it was decreased with increasing the RPP content, respectively. Also, the water absorption ratio was decreased with increasing the RPP content. But, the acid-resistant was improved with increasing the RPP content.