• 한국세라믹학회지
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• 제25권5호
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• pp.532-540
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• 1988

Even the finest cement as having a specific surface area of 6.000~8.500$\textrm{cm}^2$/g (Blaine) is to convert into low-porosity hardened cement paste by the use of appropriate plasticizer. In this study, tests were carried out on such a special cement mix(fineness of 6.000$\textrm{cm}^2$/g, Ca-lignosulfonate plus k2CO3 as plasticizer and W/C=0.25) in comparison with ordinary Portland cement. Owing mainly to the high fineness of the cement powder and the low water-to-cement ratio, the hardened low-porosity cement paste showed a very tight microstructure, the pore texture of which consisted of micropores and wide pores only of small radii. The consequence of such mix was hence that the low-porosity special cement had excellent properties of early-high and very high strengths as compared to ordinary Portland cement. Its volume change when dried in the air or re-wetted, exhibited superor behaviour as well.

• 한국건축시공학회:학술대회논문집
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• 한국건축시공학회 2006년도 추계 학술논문 발표대회 논문집
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• pp.111-114
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• 2006

This paper is to investigate the chemical composition and physical properties of cements collected at different crushing process line of ordinary portland cement to verify the possibility for producing special purpose cement based on the particle distribution technique. According to test results, six different cement samples with different blaine were gathered. loss on ignition and chemical composition of cements gathered were satisfied with KS L 5201. Cement collected at line 5 had the lowest blaine value while cement at line 4 had the highest blaine value. The coarser the cement particle is, the larger the fluidity of cement is. The compressive strength of cement was highly affected by the blaine value of cement. It is confirmed that the use of cement produced by the process of particle distribution control may be applied for special purpose cement without modification of chemical composition.

• 시멘트
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• 통권193호
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• pp.6-8
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• 2012

• 시멘트
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• 통권194호
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• pp.5-7
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• 2012

• 시멘트
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• 통권194호
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• pp.8-13
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• 2012

• 시멘트
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• 통권196호
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• pp.20-25
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• 2012

• 시멘트
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• 통권200호
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• pp.18-24
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• 2013

• 대한치과의사협회지
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• 제53권3호
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• pp.187-194
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• 2015

This paper reflects on the state of the art of two kinds of tooth hard tissue (enamel and dentin) bonding with resin cement. After presenting composition of resin cement, concepts of enamel bonding and resin bonding are addressed. Special attention is devoted to the concept and advantage of self-etching technique. Finally, recommended clinical performance regarding bonding to tooth with resin cement is summarized.

• 한국콘크리트학회:학술대회논문집
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• 한국콘크리트학회 1998년도 가을 학술발표회 논문집(I)
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• pp.145-150
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• 1998

This study deals with the effect on performance of epoxy resign mortar mixed special cement for surface control and maintenance of aging concrete construction. The test of main property of epoxy resign in this study are the evaluation on the adhesive strength between substrate and epoxy resign mortar under the environment of wet or concrete substrate surface. We gained the test results of good adhesive strength over 15 kgf/$\textrm{cm}^2$ under the wet and dry condition of concrete surface.

• 한국콘크리트학회:학술대회논문집
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• 한국콘크리트학회 2006년도 춘계 학술발표회 논문집(II)
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• pp.497-500
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• 2006

Masonry buildings constructed using concrete brick and cement mortar after normal Poteulranteu cement appearance, but problem of colloquial Chinese and individual crack etc. happened. Also, domestic standard abroad standard being applied mostly just as it is various kinds problem have. Therefore, purpose of this research is that wish to analyze physical special quality for Masonry individual and mortar and present pabulum that can evaluate deviation structural special quality.