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메카카올린과 시멘트 킬른 더스트를 사용한 3성분계 시멘트 모르타르의 역학적 특성에 관한 연구
임진혁(Yim Jin-Hyuk),사순헌(Sa Sun-Heon),김상헌(Kim Sang-Heon),지석원(Ji Suk-Won),서치호(Seo Chee-Ho) 대한건축학회 2008 대한건축학회 학술발표대회 논문집 - 계획계/구조계 Vol.28 No.1(구조계)
Replacement of cement by admixture which is one of the methods to improve concrete performance has contributed to improvement of concrete strength and durability. On this study, the mechanical properties of Ternary cement made from replacement of cement by various admixtures such as Blast Furnaced Slag, Fly Ash and CKD was compared by replacing cement by Silica fume and Meta kaolin fundamentally. Especially this study was focused on establishing mechanical properties of ternary cement made from replacement of cement by CKD what is collected dust from the Kiln manufacturing cement. CKD having high fineness and alkalinity that can accelerate pozzolan reaction was effective for improving strength of Meta kaolin more than any other admixtures.
발수 코팅처리한 경량골재콘크리트의 흡수율 및 성상변화에 관한 실험적 연구
박승일(Park Seung-Il),사순헌(Sa Sun-Heon),김상헌(Kim Sang-Heon),지석원(Ji Suk-Won),서치호(Seo Chee-Ho) 대한건축학회 2008 대한건축학회 학술발표대회 논문집 - 계획계/구조계 Vol.28 No.1(구조계)
A main composition of the lightweight aggregate is a polycrystal qualitative plastic because of the fact, the characteristic of the aggregate is that the vast quantity of air gap is formed inside the aggregate. t As a matter of the characteristic, the moisture in the aggregates tends to move irregularly according to the change in the outer condition. Consequently a measure to solve the problem is needed. In this research as a part of the study on the performance improvement of light weight aggregates by coating, the absorptance variation and the change on time of the coated light weight aggregates were compared and analyzed for ensuring the workability of lightweight aggregates concrete by preventing from absorption to inner aggregates by impregnation of water repellent and oil repellent.